http://www.zonge.com/Recent content in Home on ZongeHugoen-usThu, 07 Dec 2023 21:29:20 +0200http://www.zonge.com/about/about/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/about/about/<h2 id="who-we-are">Who We Are</h2> <p>Zonge International is an employee-owned geophysical services company, instrument manufacturer, and engineering group. Founded by Dr. Ken Zonge in 1972, we focus on applying electrical, electromagnetic, and potential-field methods to image the Earth&rsquo;s subsurface.</p> <p>Our goal is to provide state-of-the-art instruments to exploration groups worldwide and continue to be among the world&rsquo;s leading geophysical service providers. We look at each day as an opportunity to become a better company. We are proud of our history, but each day we are making new history. It is about finding time to mix the tried and true with the innovative and new. It is about always looking for a better way to do something, even when it is not easy. Zonge invests significantly in R&amp;D projects each year.</p>http://www.zonge.com/instruments/sensors/ant4/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/sensors/ant4/<h2 id="overview">Overview</h2> <p>The ANT-4 is Zonge&rsquo;s very low-noise induction magnetometer for MT and CSEM programs that need confident low-frequency magnetic measurements without the complexity of specialist cryogenic systems. It is built for rugged field deployment and is widely suited to production survey work where reliability matters as much as sensitivity.</p> <figure class="zonge-inline-figure zonge-inline-figure-light" style="max-width: 760px; margin-left: auto; margin-right: auto;"> <img src="./img/antennas/ant4response.jpg" alt="ANT-4 response plot." class="img-responsive" style="max-width: 760px; width: 100%;"> <figcaption>ANT-4 response plot.</figcaption> </figure> <h2 id="where-it-fits">Where It Fits</h2> <ul> <li>Magnetotelluric surveys</li> <li>Controlled-source EM programs</li> <li>Low-frequency magnetic field measurements</li> <li>Field crews that need durable, repeatable sensor performance</li> </ul> <h2 id="key-specifications">Key Specifications</h2> <ul> <li>Optimal frequency range: <code>100 uHz to 1 kHz</code></li> <li>Sensitivity: <code>100 mV/nT</code></li> <li>High-pass corner: <code>0.25 Hz</code></li> <li>Low-pass corner: <code>1 kHz</code></li> <li>Length: <code>1263 mm</code></li> <li>Weight: <code>5.3 kg</code></li> <li>Power supply: <code>+/-7.5 V min</code> to <code>+/-15 V max</code></li> <li>Supply current: <code>4.5 mA</code></li> <li>Standard connector: <code>PT07A-12-8S</code></li> </ul> <h2 id="why-customers-choose-it">Why Customers Choose It</h2> <p>The ANT-4 is the strong all-around choice when a project needs dependable low-noise MT or CSEM magnetic data across a broad field campaign. It balances low-frequency performance, proven field durability, and practical deployment.</p>http://www.zonge.com/methods/groundmethods/csamt/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/methods/groundmethods/csamt/<h2 id="method">Method</h2> <h3 id="introduction">Introduction</h3> <p>Controlled-source audio magnetotellurics (CSAMT) measures the resistivity of the Earth by transmitting a controlled signal from a distant grounded dipole and recording orthogonal electric and magnetic field components across a range of frequencies. The resulting resistivity response is used to map lithologic contrasts, structures, alteration zones, and hydrogeologic boundaries.</p> <figure class="zonge-inline-figure" style="max-width: 600px; margin-left: auto; margin-right: auto;"> <img src="./img/csamt-transmitter-fields.png" alt="Figure" class="img-responsive" style="max-width: 600px; width: 100%;"> </figure> <h2 id="applications">Applications</h2> <p>CSAMT is widely used to image resistivity structure where geologic targets are controlled by lithology, fluid content, alteration, or faulting.</p>http://www.zonge.com/instruments/rx/gdp3224/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/rx/gdp3224/<h3 id="get-maximum-use-from-your-equipment-investment">Get maximum use from your equipment investment</h3> <p>The Zonge GDP-3224TM is an integrated, 24-bit multi-channel receiver for acquisition of controlled- and natural-source geoelectric and EM data.</p> <ul> <li>24-bit analog system</li> <li>Expanded keyboard</li> <li>½-VGA graphics display</li> <li>100BaseT Ethernet port</li> <li>GPS timing, plus high-accuracy quartz clock</li> <li>Multiple, selectable data storage modes in a single data cache</li> <li>Remote control operation</li> <li>Broadband time-series recording</li> <li>High-speed data transfer</li> </ul> <hr> <h3 id="features">FEATURES</h3> <ul> <li>1 to 16 channels, user expandable</li> <li>133 MHz 586 CPU</li> <li>Alphanumeric keypad</li> <li>Real-time data and statistics display</li> <li>Easy to use menu-driven software</li> <li>Resistivity, Time/Frequency Domain IP, CR, CSAMT, Harmonic analysis CSAMT (HACSAMT), AMT, MT, TEM &amp; NanoTEM</li> <li>Screen graphics: plots of time-domain decay, resistivity and phase, complex plane plots, etc., on a 480x320 ½-VGA, sunlight readable LCD</li> <li>Internal humidity and temperature sensors</li> <li>Time schedule program for remote operation with Zonge XMT-32S transmitter controller</li> <li>Optional GPS time synchronization with transmitter</li> </ul> <p><strong>Use as a data logger for analog data, borehole data, etc.</strong></p>http://www.zonge.com/instruments/tx/ggt10/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/tx/ggt10/<h1 id="description">Description</h1> <p>The GGT-10B is a broadband, constant-current, time and frequency domain, medium-power geophysical transmitter. It is designed for versatility in geophysical surveys, supporting applications such as time/frequency domain IP, resistivity, controlled source audio magnetotellurics (CSAMT), and transient electromagnetic methods (TEM). The GGT-10B features a robust, anodized blue aluminum enclosure that ensures durability and reliability across various environmental conditions.</p> <h1 id="features">Features</h1> <ul> <li>Constant current supply</li> <li>Used for time/frequency domain IP, Resistivity, CR, TEM, CSAMT</li> <li>Broad-band: DC to 8 kHz (standard)</li> <li>Output up to 1000 V, 25 A</li> <li>Fast turn-off time: 125 µsec (300 x 300 m loop)</li> <li>Drives a loop or grounded dipole</li> <li>Efficient, modular design</li> <li>Rugged design reliable in all climates</li> <li>Optional internal time base</li> </ul> <h1 id="specifications">Specifications</h1> <h2 id="general">General</h2> <ul> <li>Enclosure: Anodized blue aluminum case</li> <li>Size: 55.9 x 40.6 x 35.6 cm (22 x 15 x 14 in)</li> <li>Weight: 48.6 kg (107 lbs.)</li> <li>Operating temperature: -40° to +55°C (-40° to +130°F)</li> <li>Operating humidity: 0 to 90%, non-condensing</li> </ul> <h2 id="electrical-characteristics">Electrical Characteristics</h2> <ul> <li>Drives a loop or grounded dipole</li> <li>Turnoff time: Under 10 µsec for a resistive load; 125 µsec for a 300 x 300 m loop (16 ohms resistance, full current)</li> <li>Maximum input: 10KVA @ 30°C</li> <li>Output voltage range: 50 to 1000V</li> <li>Output current range: 0.2 to 20A</li> <li>Current stability: ±0.2%</li> <li>Frequency range: DC to 8 kHz</li> </ul> <h2 id="switching-control">Switching Control</h2> <ul> <li>Switching controlled by external device</li> <li>Recommended transmitter controller: Zonge XMT, GDP, or ZEN</li> <li>Waveform type: Capable of virtually any type of pulse waveform, limited by external controller device</li> </ul> <h2 id="controls">Controls</h2> <ul> <li>Power ON / OFF (Key for lock out/tag out)</li> <li>Transmit / Reset switches</li> <li>Current adjust pot, continuously adjustable, locking</li> <li>Voltage range TAP switch <ul> <li>50-250V</li> <li>200-500V</li> <li>450-750V</li> <li>700-1000V</li> </ul> </li> <li>2A / 20A range select switch</li> <li>Emergency Stop Switch</li> </ul> <h2 id="displays">Displays</h2> <ul> <li>Analog input voltage meter, 0-150 V</li> <li>Analog output voltage meter, 0-1000 V</li> <li>Power On / Off LED, Transmit LED, Output LED</li> <li>3&amp;1/2 Digit Operating Information Display <ul> <li>Output current</li> <li>Loop turnoff time (µseconds)</li> <li>Transformer temperature (°C)</li> <li>Input power (KW)</li> </ul> </li> <li>Indicator LEDs: Power on, reset valid, transmit on, transmit polarity</li> <li>Fault indicator LEDs: Output and input overcurrent, output and input overvoltage, end of regulation, generator overvoltage, open circuit, phase error</li> </ul> <h2 id="output-jacks">Output Jacks</h2> <ul> <li>Isolated Output Current (10 mV/A)</li> <li>Isolated Output Voltage (10 mV/V) (Optional)</li> </ul> <h2 id="power">Power</h2> <ul> <li>Three-phase, 120 VAC, 400 Hz ± 15 Hz</li> <li>Recommended motor generator set: Zonge ZMG</li> <li>Power connector: Hubbell, 4-Pole, 5-Wire</li> </ul> <h2 id="options">Options</h2> <ul> <li>IGBT spare module</li> <li>SCR spare module</li> <li>ZCM-10 Isolated Output Voltage (10mV/V) (Optional Current monitor isoamp module)</li> <li>LB6000 Resistor load bank</li> <li>ETS-9 Switch box for rapid switching of dipole pairs</li> <li>Optional internal time base</li> </ul> <h1 id="supporting-documents">Supporting Documents</h1> <p><a href="./documents/ggt10b.pdf">Download Specification sheet for GGT-10B</a></p>http://www.zonge.com/methods/groundmethods/gravity/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/methods/groundmethods/gravity/<h2 id="method">Method</h2> <h3 id="introduction">Introduction</h3> <p>A gravity survey measures small changes in Earth’s gravitational field that result from density contrasts in the subsurface. Denser materials produce a stronger gravitational response, while lower-density materials reduce the observed field.</p> <p>Gravity data are typically acquired at stations distributed along profiles, grids, or regional traverses. Zonge reduces the observations to complete Bouguer anomaly data and related derivative products that help map structure, basin geometry, and density-driven targets.</p>http://www.zonge.com/methods/groundmethods/ip/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/methods/groundmethods/ip/<h2 id="method">Method</h2> <h3 id="introduction">Introduction</h3> <p>An IP survey is produced by injecting current into the ground and measuring the change in voltage with respect to time (TD) or a lag in phase between the receiver and transmitter waveforms (CR). The voltage potential is measured between two receiver electrodes, and as the spacing between transmitter electrodes and the receiver pairs increases, the depth of investigation increases.</p> <p>In simple terms, the target’s ability to store electrical energy after the current is turned off or after the polarity switches indicates the material is chargeable (ie sulfides, graphite, clays, or other alteration products).</p>http://www.zonge.com/methods/groundmethods/mt/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/methods/groundmethods/mt/<h2 id="method">Method</h2> <h3 id="introduction">Introduction</h3> <p>Magnetotellurics (MT) is a passive electromagnetic method that uses naturally occurring electric and magnetic fields to image subsurface resistivity structure from near surface to crustal depths. It is one of the deepest sounding electromagnetic methods used in exploration and regional geologic investigations.</p> <p>Signal energy is supplied by global lightning discharges and solar activity. Grounded dipoles and magnetic antennas record the electric and magnetic field response across a broad frequency range, and those data are processed into apparent resistivity and impedance information that can be inverted for depth-dependent structure.</p>http://www.zonge.com/instruments/accessories/misc/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/accessories/misc/<h1 id="under-constructions">Under constructions</h1>http://www.zonge.com/instruments/accessories/reels/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/accessories/reels/<h1 id="under-constructions">Under constructions</h1>http://www.zonge.com/about/safety/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/about/safety/<div class="zonge-safety-page"> <div class="zonge-safety-hero"> <div class="zonge-safety-hero-icon"> <i class="fas fa-shield-alt" aria-hidden="true"></i> </div> <div> <h1>Safety at Zonge</h1> <p class="zonge-safety-lead">Safety is a core part of how Zonge plans, mobilizes, and executes work.</p> </div> </div> <div class="zonge-safety-callout"> <h2>Built Into Every Project</h2> <p>Zonge maintains a Safety Management System, has a Corporate Safety Officer, and develops Emergency Response and Health, Safety, and Environmental plans for every project.</p> </div> <div class="zonge-safety-grid"> <div class="zonge-safety-card"> <div class="zonge-safety-card-icon"><i class="fas fa-clipboard-check" aria-hidden="true"></i></div> <h3>Safety Management System</h3> <p>Structured procedures support safe, reliable work in the office, shop, and field.</p> </div> <div class="zonge-safety-card"> <div class="zonge-safety-card-icon"><i class="fas fa-user-shield" aria-hidden="true"></i></div> <h3>Corporate Oversight</h3> <p>A Corporate Safety Officer helps guide planning, training, and continuous improvement.</p>http://www.zonge.com/software/software/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/software/software/<div class="zonge-software-page"> <div class="zonge-software-intro"> <p class="zonge-software-eyebrow">Processing and Interpretation</p> <h1>Zonge Software Programs</h1> <p class="zonge-software-lead">A focused catalog of Zonge processing and interpretation tools used across EM processing workflows.</p> </div> <div class="zonge-software-table-wrap"> <table class="zonge-software-table"> <thead> <tr> <th>Program</th> <th>Description</th> </tr> </thead> <tbody> <tr> <td>CSAVGW</td> <td>Averages raw CSAMT data and supports quality control before interpretation.</td> </tr> <tr> <td>TDAVGW</td> <td>Averages and quality-checks time-domain IP field data in multiple export formats.</td> </tr> <tr> <td>TEMAVGW</td> <td>Averages and quality-checks TEM field data from `.raw`, `.dnt`, `.cac`, and `.zdb` files.</td> </tr> <tr> <td>CRAVGW</td> <td>Averages and quality-checks complex resistivity field data from Zonge IP/CR systems.</td> </tr> <tr> <td>HEMAVGW</td> <td>Averages and quality-checks EM field data </td> </tr> <tr> <td>MTFT</td> <td>Processes MT time-series data into spectral coefficients for downstream impedance analysis.</td> </tr> <tr> <td>MTEDIT</td> <td>Reviews MT spectral data and calculates averaged impedance and apparent resistivity with interactive QC editing.</td> </tr> <tr> <td>SCS2D</td> <td>Performs 2D inversion of CSAMT, AMT, and MT data to create resistivity-depth sections.</td> </tr> <tr> <td>TS2DIP</td> <td>Performs 2D inversion and modeling of IP and resistivity data for section-based interpretation.</td> </tr> <tr> <td>SCSINV</td> <td>Runs smooth-model 1D CSAMT inversion to build stitched resistivity-depth images along a line.</td> </tr> <tr> <td>STEMINV</td> <td>Performs smooth-model 1D inversion of TEM soundings into layered-earth resistivity models.</td> </tr> <tr> <td>ASTATIC</td> <td>Applies MT static correction and converts survey outputs into formats such as SEG and EDI.</td> </tr> </tbody> </table> </div> </div>http://www.zonge.com/targets/geothermal/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/targets/geothermal/<h1 id="geothermal-exploration">Geothermal Exploration</h1> <p>Our geophysical surveys help reveal what’s happening beneath the surface in a non-invasive way. Zonge provides imaging techniques to identify hot fluids, clays, brines, sinters, and geologic structures that are key to finding and developing geothermal resources. By combining them, we give you a reliable picture of the subsurface, helping reduce risk and guide smarter decisions from the start.</p> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css"> <style> #mining { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; position: relative; padding: 2rem; border: 1px solid rgba(117, 152, 199, 0.16); border-radius: 24px; background: linear-gradient(180deg, rgba(10, 22, 40, 0.96), rgba(8, 18, 33, 0.96)); box-shadow: 0 22px 48px rgba(0, 0, 0, 0.2); } #mining .geo-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 1.05rem; overflow: hidden; border: 1px solid rgba(117, 152, 199, 0.14); border-radius: 20px; } #mining .geo-table-wrapper { position: relative; overflow-x: auto; } #mining .geo-cell { padding: 1.25rem; text-align: center; cursor: pointer; transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease; font-size: 1.5rem; border-right: 1px solid rgba(117, 152, 199, 0.12); 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} #mining .close-btn { top: 8px; right: 8px; width: 40px; height: 40px; font-size: 2rem; } #mining .modal-row { flex-direction: column; gap: 0.35rem; } #mining .modal-label { flex: 1 1 auto; } } </style> <div id="mining"> <h2 style="margin-bottom: 1rem;">Geothermal</h2> <div class="geo-table-wrapper"> <table class="geo-table"> <thead> <tr> <th class="geo-header">Deposit / Method</th> <th class="geo-header">Magnetic</th> <th class="geo-header">Gravity</th> <th class="geo-header">CSAMT/AMT</th> <th class="geo-header">MT</th> <th class="geo-header">IP</th> <th class="geo-header">EM</th> </tr> </thead> <tbody data-grid-body></tbody> </table> <div class="custom-modal-overlay" data-modal-overlay> <div class="custom-modal"> <div class="close-btn" data-close-modal>&times;</div> <h5 data-modal-title></h5> <div data-modal-content></div> </div> </div> </div> </div> <script> (function () { const root = document.currentScript.previousElementSibling; const icons = { green: '<span class="rating-thermometer thermo-red level-3" aria-label="Good suitability"><span class="thermo-stem"><span class="thermo-fill"></span></span><span class="thermo-bulb"></span></span>', yellow: '<span class="rating-thermometer thermo-yellow level-2" aria-label="Moderate suitability"><span class="thermo-stem"><span class="thermo-fill"></span></span><span class="thermo-bulb"></span></span>', blue: '<span class="rating-thermometer thermo-blue level-1" aria-label="Low suitability"><span class="thermo-stem"><span class="thermo-fill"></span></span><span class="thermo-bulb"></span></span>' }; const messages = { green: 'Red thermometer: good suitability', yellow: 'Yellow thermometer: moderate suitability', blue: 'Blue thermometer: low suitability' }; const messagesByTypeAndMethod = {"Enhanced Geothermal":{"CSAMT/AMT":"Likely not useful too deep\n","EM":"Likely not useful, MT is a better option\n","Gravity":"Could be useful for mapping basement rock\n","IP":"Likely not useful too deep\n","MT":"Good for mapping the basement rocks beneath the basin fill\n","Magnetic":"Perhaps only useful in a regional sense\n"},"Hydrothermal Systems":{"CSAMT/AMT":"Reservoirs \u003e Low resistivity with hot, saline fluids\nStructures \u003e Resistivity contrast but low in general due to fluid-filled fractures\nCap rocks/clay \u003e High resistivity with silicification, low resistivity with clay\nSinters \u003e High resistivity with silicification\n","EM":"Shallow high-conductivity zones \u003e Strong early-time response\nFluid filled faults \u003e High conductivity observed in early-time\nSaline Reservoirs \u003e Low resistivity, strong late time\n","Gravity":"Hydrothermal Alteration \u003e Gravity lows\nStructures/Faults \u003e Linear gradients/breaks\nIntrusives \u003e Gravity highs or a contrast to host rock\nCap rocks/clay \u003e Broad gravity low\n","IP":"Geothermal reservoirs \u003e Can highlight chargeable zones at margins with alteration\nSinters \u003e High resistivity with low chargeability\nAlteration \u003e Moderate increase in chargeability with clay presence\nSulfide Zones \u003e Moderate chargeability\n","MT":"Deep Reservoirs \u003e Low resistivity with hot, saline fluids\nStructures \u003e Resistivity contrast between fluid-filled fractures\nMagmatic bodies/heat source \u003e Low resistivity at depth\nCap rocks/clay \u003e High resistivity with silicification, low resistivity with clay\n","Magnetic":"Hydrothermal Alteration \u003e Magnetic lows to magnetite destruction\nStructures/Faults \u003e Breaks in magnetic signature\nIntrusives \u003e Magnetic high if magnetite-rich\nCap rocks/clay \u003e Broad, subtle magnetic lows\n"}}; 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const method = headers[index]; const customMsg = messagesByTypeAndMethod[row.type]?.[method]; const defaultMsg = messages[cell]; td.onclick = () => { modalTitle.innerHTML = `<span class="modal-title-text">${row.type} → ${method}</span>`; if (customMsg) { const lines = customMsg.split('\n'); const html = lines.map(line => { const parts = line.split('>'); return parts.length === 2 ? `<div class="modal-row"><div class="modal-label">${parts[0].trim()}</div><div class="modal-value">${parts[1].trim()}</div></div>` : `<div>${line.trim()}</div>`; }).join(''); modalContent.innerHTML = `<div class="modal-content-list">${html}</div>`; } else { modalContent.innerHTML = `<p style="font-size: 1.2rem;">${defaultMsg}</p>http://www.zonge.com/targets/groundwater/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/targets/groundwater/<h1 id="groundwater-and-geophysics">Groundwater and Geophysics</h1> <p>Zonge offers advanced geophysical services for groundwater exploration using electrical, electromagnetic (EM), and gravity methods. These non-invasive techniques provide quick, accurate assessments of subsurface conditions, helping to locate and map water-bearing formations. Our methods are environmentally friendly and ideal for guiding efficient drilling strategies.</p> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css"> <style> #mining { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; position: relative; padding: 2rem; border: 1px solid rgba(117, 152, 199, 0.16); border-radius: 24px; background: linear-gradient(180deg, rgba(10, 22, 40, 0.96), rgba(8, 18, 33, 0.96)); box-shadow: 0 22px 48px rgba(0, 0, 0, 0.2); } #mining .geo-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 1.05rem; overflow: hidden; border: 1px solid rgba(117, 152, 199, 0.14); border-radius: 20px; } #mining .geo-table-wrapper { position: relative; overflow-x: auto; } #mining .geo-cell { padding: 1.25rem; text-align: center; cursor: pointer; transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease; font-size: 1.5rem; border-right: 1px solid rgba(117, 152, 199, 0.12); border-bottom: 1px solid rgba(117, 152, 199, 0.12); } #mining .geo-cell:hover { transform: translateY(-2px); box-shadow: inset 0 0 0 1px rgba(123, 191, 255, 0.18); } #mining .geo-header { color: #eaf3ff; font-weight: bold; padding: 1rem; font-size: 1.25rem; text-align: center; background: linear-gradient(180deg, rgba(18, 44, 76, 0.96), rgba(15, 35, 61, 0.96)); border-right: 1px solid rgba(117, 152, 199, 0.14); border-bottom: 1px solid rgba(117, 152, 199, 0.14); letter-spacing: 0.04em; text-transform: uppercase; } #mining td:nth-child(even) { background-color: rgba(13, 29, 53, 0.84); } #mining td:nth-child(odd) { background-color: rgba(9, 21, 39, 0.84); } #mining tbody .geo-header { background: rgba(12, 29, 52, 0.94); color: #f5f9ff; text-transform: none; letter-spacing: 0; font-size: 1.15rem; } #mining .water-glass { position: relative; display: inline-flex; align-items: flex-end; justify-content: center; width: 1.2rem; height: 2rem; } #mining .water-glass-body { position: absolute; inset: 0.1rem 0.12rem 0.12rem 0.12rem; border: 2px solid #5b6b7a; border-top-width: 0.18rem; border-radius: 0 0 0.28rem 0.28rem; background: linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(236, 244, 249, 0.95) 100%); overflow: hidden; box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.7); } #mining .water-glass-fill { position: absolute; left: 0; right: 0; bottom: 0; background: linear-gradient(180deg, #9be7ff 0%, #219ebc 100%); } #mining .water-glass.level-3 .water-glass-fill { height: 100%; } #mining .water-glass.level-2 .water-glass-fill { height: 50%; } #mining .water-glass.level-1 .water-glass-fill { height: 0; } #mining .custom-modal-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; padding: 1.5rem; background: rgba(0, 0, 0, 0.6); display: flex; align-items: center; justify-content: center; visibility: hidden; opacity: 0; transition: opacity 0.3s ease, visibility 0.3s ease; z-index: 20; border-radius: 20px; } #mining .custom-modal-overlay.active { visibility: visible; opacity: 1; } #mining .custom-modal { background: linear-gradient(180deg, rgba(10, 22, 40, 0.98), rgba(8, 18, 33, 0.98)); padding: 2rem; border-radius: 1rem; border: 1px solid rgba(117, 152, 199, 0.16); max-width: 900px; max-height: calc(100% - 3rem); height: auto; overflow-y: auto; width: 95%; box-shadow: 0 0 20px rgba(0, 0, 0, 0.25); position: relative; animation: fadeInUp 0.4s ease forwards; font-size: 1.2rem; } @keyframes fadeInUp { 0% { transform: translateY(30px); opacity: 0; } 100% { transform: translateY(0); opacity: 1; } } #mining .close-btn { position: absolute; top: 12px; right: 14px; font-size: 2.4rem; line-height: 1; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; border-radius: 50%; cursor: pointer; color: #999; } #mining .close-btn:hover { color: #fff; } #mining .modal-content-list { display: flex; flex-direction: column; gap: 0.75rem; padding-top: 1rem; } #mining .modal-row { display: flex; flex-direction: row; gap: 1rem; align-items: flex-start; flex-wrap: wrap; } #mining .modal-label { flex: 0 0 40%; font-weight: bold; color: #dceafb; } #mining .modal-value { flex: 1; color: rgba(223, 232, 245, 0.82); } #mining .modal-title-text { font-weight: bold; font-size: clamp(1.25rem, 3vw, 2rem); color: #f7fbff; line-height: 1.25; } @media (max-width: 640px) { #mining { padding: 1.25rem; } #mining .custom-modal-overlay { padding: 0.75rem; } #mining .custom-modal { width: 100%; padding: 1.25rem; max-height: calc(100% - 1.5rem); } #mining .close-btn { top: 8px; right: 8px; width: 40px; height: 40px; font-size: 2rem; } #mining .modal-row { flex-direction: column; gap: 0.35rem; } #mining .modal-label { flex: 1 1 auto; } } </style> <div id="mining"> <h2 style="margin-bottom: 1rem;">Groundwater</h2> <div class="geo-table-wrapper"> <table class="geo-table"> <thead> <tr> <th class="geo-header">Deposit / Method</th> <th class="geo-header">Magnetic</th> <th class="geo-header">Gravity</th> <th class="geo-header">CSAMT/AMT</th> <th class="geo-header">MT</th> <th class="geo-header">IP</th> <th class="geo-header">EM</th> </tr> </thead> <tbody data-grid-body></tbody> </table> <div class="custom-modal-overlay" data-modal-overlay> <div class="custom-modal"> <div class="close-btn" data-close-modal>&times;</div> <h5 data-modal-title></h5> <div data-modal-content></div> </div> </div> </div> </div> <script> (function () { const root = document.currentScript.previousElementSibling; const icons = { green: '<span class="water-glass level-3" aria-label="Good suitability"><span class="water-glass-body"><span class="water-glass-fill"></span></span></span>', yellow: '<span class="water-glass level-2" aria-label="Okay suitability"><span class="water-glass-body"><span class="water-glass-fill"></span></span></span>', blue: '<span class="water-glass level-1" aria-label="Not good suitability"><span class="water-glass-body"><span class="water-glass-fill"></span></span></span>' }; const messages = { green: 'Full glass: good suitability', yellow: 'Half-full glass: okay suitability', blue: 'Empty glass: not good suitability' }; const messagesByTypeAndMethod = {"Groundwater":{"CSAMT/AMT":"Aquifers \u003e Low to moderate resistivity with porous sediments\nStructures \u003e Resistivity contrast with low resistivity fluid-filled fractures, may show up as static effect\nAquitards \u003e High resistivity with silicification, low resistivity with clay\nBasin characterization \u003e Good for mapping bedrock\n","EM":"Fluid filled faults \u003e High conductivity observed in early-time\nReservoirs \u003e Low resistivity, strong late time\nAquitards/Structure control \u003e Sharp contrasts in profile\nWater table \u003e Likely best method to help pick water table\n","Gravity":"Structures/Faults \u003e Linear gradients/breaks\nAquifer monitoring \u003e Time lapse “4D” gravity surveys could help monitor changes in the water table but requires absolute gravimeters and stricter field procedures than other gravity surveys.\n","IP":"Aquitards \u003e Mapping of clay, moderate to high chargeability and low resistivity\nWater table \u003e May help map the water table for shallow applications\n","MT":"Aquifers \u003e Low to moderate resistivity with porous sediments\nStructures \u003e Resistivity contrast with low resistivity fluid-filled fractures, may show up as static effect\nAquitards \u003e High resistivity with silicification, low resistivity with clay\nBasin characterization \u003e Good for mapping bedrock\n","Magnetic":"Likely not a top choice except for specific situations where magnetic volcanic rocks are involved in the hyrdrgeoloic setting\n"}}; const headers = ["Magnetic", "Gravity", "CSAMT/AMT", "MT", "IP", "EM"]; const data = [ { type: 'Groundwater', values: ['blue', 'yellow', 'green', 'yellow', 'yellow', 'green'] } ]; const modal = root.querySelector('[data-modal-overlay]'); const modalTitle = root.querySelector('[data-modal-title]'); const modalContent = root.querySelector('[data-modal-content]'); const closeModalBtn = root.querySelector('[data-close-modal]'); const closeModal = () => modal.classList.remove('active'); closeModalBtn.onclick = closeModal; modal.addEventListener('click', (e) => { if (e.target === modal) closeModal(); }); const tbody = root.querySelector('[data-grid-body]'); tbody.innerHTML = ''; data.forEach(row => { let tr = document.createElement('tr'); tr.innerHTML = `<td class="geo-header">${row.type}</td>`; row.values.forEach((cell, index) => { let td = document.createElement('td'); td.classList.add('geo-cell'); const method = headers[index]; const customMsg = messagesByTypeAndMethod[row.type]?.[method]; const defaultMsg = messages[cell]; td.onclick = () => { modalTitle.innerHTML = `<span class="modal-title-text">${row.type} → ${method}</span>`; if (customMsg) { const lines = customMsg.split('\n'); const html = lines.map(line => { const parts = line.split('>'); return parts.length === 2 ? `<div class="modal-row"><div class="modal-label">${parts[0].trim()}</div><div class="modal-value">${parts[1].trim()}</div></div>` : `<div>${line.trim()}</div>`; }).join(''); modalContent.innerHTML = `<div class="modal-content-list">${html}</div>`; } else { modalContent.innerHTML = `<p style="font-size: 1.2rem;">${defaultMsg}</p>http://www.zonge.com/targets/mining/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/targets/mining/<h1 id="mining-and-geophysics">Mining and Geophysics</h1> <p>Appling our geophysical methods to mining exploration is where our expertise runs deepest. We use these tools to uncover ore bodies, structures, and alteration zones, giving you a cost-effective picture of what lies beneath. Our approach is fully customizable to meet the unique demands of your project, and we’re always refining our techniques to deliver practical, proven results. With us, you get experience, innovation, and exploration strategies that work.</p>http://www.zonge.com/targets/targets/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/targets/targets/<div class="testimonial"> <section class="bar background-white"> <div class="container"> <div class="row row-0 row-odd"> <div class="col-md-4 col-0 col-odd"> <div class="box-simple"> <div class="icon"> <i class="fas fa-globe"></i> </div> <h3>Reconnaissance<br>(Low-Resolution)</h3> <ul style="list-style: none; padding-left: 0;"> <li>Microgravity</li> <li>Airborne Magnetics</li> <li>MT (km spacing)</li> <li>Airborne TEM / Ground TEM</li> <li>Gradient IP</li> </ul> </div> </div> <div class="col-md-4 col-1 col-even"> <div class="box-simple"> <div class="icon"> <i class="fas fa-binoculars"></i> </div> <h3>Intermediate<br>(Mid-Resolution)</h3> <ul style="list-style: none; padding-left: 0;"> <li>.</li> <li>UAV Drone Magnetics</li> <li>CSAMT/AMT (m spacing)</li> <li>MMR</li> <li>Pole-Dipole, large Dipole-Dipole</li> </ul> </div> </div> <div class="col-md-4 col-2 col-odd"> <div class="box-simple"> <div class="icon"> <i class="fas fa-search-location"></i> </div> <h3>Targeting<br>(High-Resolution)</h3> <ul style="list-style: none; padding-left: 0;"> <li>Regional Gravity</li> <li>Ground Magnetics</li> <li>CSAMT/MT</li> <li>BHEM - NanoTEM</li> <li>Small Dipole IP</li> </ul> </div> </div> </div> </div> </section> </div> <h1 id="mining-and-geophysics">Mining and Geophysics</h1> <p>Appling our geophysical methods to mining exploration is where our expertise runs deepest—they’re the backbone of our exploration services. We use these tools to uncover ore bodies, structures, and alteration zones, giving you a clear, cost-effective picture of what lies beneath. Our approach is fully customizable to meet the unique demands of your project, and we’re always refining our techniques to deliver practical, proven results. With us, you get experience, innovation, and exploration strategies that work.</p>http://www.zonge.com/about/teams/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/about/teams/<h1 id="under-construction">UNDER CONSTRUCTION</h1>http://www.zonge.com/methods/groundmethods/tem/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/methods/groundmethods/tem/<h2 id="method">Method</h2> <h3 id="introduction">Introduction</h3> <p>A transient electromagnetic (TEM) survey generates a controlled electromagnetic field by transmitting current through a loop and measuring the decaying secondary magnetic field after current turnoff. That decay is controlled by subsurface resistivity, making TEM particularly effective for conductive targets.</p> <p>Decay responses are sampled in discrete time gates that range from microseconds to milliseconds depending on system design. Slow decay typically indicates more conductive material, while rapid decay is more typical of resistive ground.</p>http://www.zonge.com/methods/airbonemethods/airbone_magnetics/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/methods/airbonemethods/airbone_magnetics/<h2 id="method">Method</h2> <h3 id="introduction">Introduction</h3> <p>Measurements are made along lines using a total-field magnetometer suspended from an Unmanned Aerial Vehicle (Drone).</p> <p>All pilots are FAA Part 107 certified, and operations are carried out in compliance with Zonge&rsquo;s UAV SMS program.</p> <p>Drone magnetics strikes a balance between helicopter-borne surveys and ground surveys. There may be slightly less detail than ground surveys, but draping with an RTK-based drone is generally better, so there can be more detail than helicopter surveys.</p>http://www.zonge.com/instruments/tx/xmtr/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/tx/xmtr/<h2 id="overview">Overview</h2> <p>The XMT-R is Zonge International&rsquo;s GPS-synchronized transmitter controller for field control of Zonge transmitters. It supports preset 50% and 100% duty-cycle waveforms across a wide operating range and can also run user-defined ternary transmission sequences when specialized timing is required.</p> <p>Operators can work directly on the instrument using the transflective display and hardware buttons, or remotely from a phone, tablet, or PC through the built-in Wi-Fi web interface.</p> <figure class="zonge-inline-figure zonge-inline-figure-light" style="max-width: 900px; margin-left: auto; margin-right: auto;"> <img src="./img/instruments/tx/xmtr-hardware-controls_raw.webp" alt="Figure" class="img-responsive" style="max-width: 900px; width: 100%;"> </figure> <h2 id="key-capabilities">Key Capabilities</h2> <ul> <li>GPS-synchronized timing for repeatable transmitter control</li> <li>Compatible with all Zonge transmitters</li> <li>Local control from the front-panel display and buttons</li> <li>Remote setup and adjustment through a Wi-Fi web interface</li> <li>Preset 50% and 100% duty-cycle operation</li> <li>Advanced and custom operating modes, including user-uploaded signal profiles</li> <li>Support for specialized ternary control sequences using <code>.usm</code> files</li> </ul> <h2 id="controls-and-interface">Controls And Interface</h2> <p>The XMT-R uses a 128 x 64 pixel transflective display with LED backlight, making it readable in bright sunlight as well as low-light conditions. Three front-panel buttons handle local navigation:</p>http://www.zonge.com/instruments/rx/zen/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/rx/zen/<h2 id="zonge-electromagnetic-network">Zonge Electromagnetic Network</h2> <p>The new Zonge Electromagnetic Network (ZEN™) receiver is a high-resolution, multi-channel receiver for acquisition of controlled- and natural-source geo-electric and EM data.</p> <hr> <h3 id="key-benefits">Key Benefits</h3> <ul> <li>Uses <strong>32-bit analog-digital converters</strong> designed specifically for geophysical applications</li> <li>Signals not detected with conventional 16- or 24-bit receivers are easily detected with ZEN’s 32-bit resolution</li> <li>Reliable even in areas with cultural noise</li> </ul> <hr> <h3 id="distributed-acquisition-wireless-arrays">Distributed Acquisition, Wireless Arrays</h3> <ul> <li>True distributed acquisition system</li> <li>Survey setup is easier — analog signals can be measured based on terrain and access</li> <li>Flexibility for real-world field conditions</li> </ul> <hr> <h3 id="applications">Applications</h3> <ul> <li>Resistivity, Time/Frequency Domain IP, CR</li> <li>CSAMT, Harmonic Analysis CSAMT (HACSAMT), AMT, MT</li> <li>DC to 1024 Hz</li> <li>Controlled Source/IP: 1/64 to 1024 Hz</li> <li>Use as analog or borehole data logger</li> </ul> <hr> <h3 id="lightweight--field-ready">Lightweight &amp; Field Ready</h3> <ul> <li>Designed for <strong>high performance</strong> and <strong>lower deployment cost</strong> in MT data collection</li> <li>Collects <strong>highest resolution data currently possible</strong></li> <li>Weighs <strong>less than 6 pounds (2.6 kg)</strong></li> <li>Portable for small crews on large-scale surveys</li> </ul> <hr> <h3 id="integrated-system">Integrated System</h3> <ul> <li>Rugged, portable, environmentally sealed</li> <li>Modular design for easy upgrades</li> <li>Fully compatible with Zonge transmitters and ancillary gear</li> <li>Native <strong>GPS synchronization</strong> with transmitter</li> <li><strong>ZigBee® Radio Control</strong></li> <li>Broadband time-series recording</li> <li><strong>60 MHz ARM CPU</strong></li> <li>1 to 6 channels, user expandable</li> <li>One 32-bit ADC per channel</li> <li>Auto gain setting and internal calibration</li> <li><strong>Storage: 8 GB per channel</strong> — holds several days of data</li> <li>USB data transfer</li> </ul> <hr> <h2 id="specifications">Specifications</h2> <h3 id="general">General</h3> <ul> <li>Broadband, multi-channel, multi-function digital receiver</li> <li>Frequency range: <strong>DC – 1024 Hz</strong></li> <li>Channels: 1 to 6 (user expandable)</li> <li>Survey capabilities: Resistivity, Frequency-/Time-Domain IP, Complex Resistivity, CSAMT, Harmonic Analysis (CSAMT), Frequency-Domain EM, MMR, Magnetic IP, Magnetotellurics, Downhole Logging</li> <li>Software language: C++</li> <li>Size: 27 × 24 × 13 cm (10.5 × 9.5 × 6”)</li> <li>Weight (6 channels): 3 kg (6 lb 9 oz)</li> <li>Enclosure: Heavy-duty, environmentally sealed aluminum</li> <li>Power: 7–36V rechargeable batteries (external pack)</li> <li>Power consumption: 0.7 Ah</li> <li>Operating temperature: -40°C to +50°C</li> <li>Humidity: 5% to 100%</li> <li>Internal temperature sensors</li> <li>Time base: GPS Synchronization</li> </ul> <hr> <h3 id="displays--controls">Displays &amp; Controls</h3> <ul> <li>Power On-Off</li> <li>Color-coded LEDs</li> <li>ZigBee® or USB control from external computer</li> </ul> <hr> <h3 id="standard-analog-specs">Standard Analog Specs</h3> <ul> <li>Input impedance: &gt;10 MΩ at DC</li> <li>Dynamic range: 180 dB</li> <li>Minimum detectable signal: 20 ηV</li> <li>Max input voltage: ±2.5V</li> <li>Auto gain ranging (1 to 64, binary steps)</li> <li>Common-mode rejection @1000 Hz: &gt;100 dB</li> <li>Phase accuracy: ±0.1 milliradians (0.006°)</li> <li>Adjacent channel isolation @100 Hz: &gt;90 dB</li> <li>ADC resolution: 32 bits</li> <li>Conversion time: 0.25 ms</li> <li>One A/D per channel</li> <li>Analog connection: Pomona or 16-pin waterproof Mil-Spec connector</li> </ul> <hr> <h3 id="digital-section">Digital Section</h3> <ul> <li>Microprocessor: 60 MHz ARM per channel</li> <li>Mass Storage: 8 GB per channel (up to 16 GB/channel optional)</li> <li>Serial: USB to each channel</li> <li>Distributed control: Long-range mesh network (2.4 GHz, unlicensed)</li> </ul> <hr> <h3 id="acquisition-software">Acquisition Software</h3> <ul> <li>MT, CR, RDIP GUI for Windows</li> <li>External Control: Serial string interface for custom dev</li> <li>Real-time programmable via BASIC script downloads</li> </ul> <hr> <p><a href="./documents/zen.pdf">Download Specification sheet for ZEN</a></p>http://www.zonge.com/instruments/generators/zmg30/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/generators/zmg30/<p>The ZMG-30DLE is a legacy 30 KVA diesel generator package for geophysical applications.</p> <h2 id="availability">Availability</h2> <p>This unit is not currently available.</p> <p>For most new deployments, Zonge recommends a <a href="./instruments/tx/zt100/">ZT-100B Geophysical Transmitter</a> with a 3-phase generator and power supply instead.</p> <h2 id="supporting-documents">Supporting Documents</h2> <p><a href="./documents/zmg30.pdf">Download legacy specification sheet for ZMG-30</a></p> <h2 id="related-instruments">Related Instruments</h2> <ul> <li><a href="http://www.zonge.com/instruments/tx/ggt30/">GGT-30B</a></li> </ul>http://www.zonge.com/instruments/generators/zmg9/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/generators/zmg9/<h1 id="description">Description</h1> <p>Rugged 9 KVA gasoline engine, designed specfically for geophysical applications.</p> <h1 id="specifications">Specifications</h1> <p>Width: Length: Height:</p> <h1 id="supporting-documents">Supporting Documents</h1> <p><a href="./documents/ZMG-9.pdf">Download Specification sheet for ZMG-9</a></p> <h1 id="related-instruments">Related Instruments</h1> <p><a href="http://www.zonge.com/instruments/tx/ggt10/" title="10 KW Transmitter">GGT10</a></p>http://www.zonge.com/instruments/tx/zt100/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/tx/zt100/<h2 id="overview">Overview</h2> <p>The ZT-100B is Zonge&rsquo;s modern GPS-synchronized transmitter platform for advanced field operations in demanding survey conditions. It combines rugged field hardware, flexible operating modes, and a built-in web interface into a transmitter system designed for crews that want capability, control, and reliability in one package.</p> <p>For customers building a new high-performance transmitter system, the ZT-100B is the premium Zonge option for teams that want a current-generation platform with modern control and workflow flexibility.</p>http://www.zonge.com/instruments/tx/zt30b/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/tx/zt30b/<p>The ZT-30B is a transmitter capable of producing time-domain or frequency-domain waveforms into either resistive or inductive loads. As a TEM transmitter, the ZT-30B can deliver up to 30A into a 100m loop with a turnoff time of less than 200 µs. Because the ZT-30B also performs well while transmitting into resistive loads, some customers can use it as a low-power resistivity transmitter.</p> <h2 id="features">Features</h2> <ul> <li>Bipolar current output up to 30 A</li> <li>50 or 100 % duty cycle</li> <li>1 µs turnoff into resistive load</li> <li>Reverse polarity input protection</li> <li>Less than 150 µs turnoff into a 100 meter loop at 20 amperes</li> <li>Lightweight, externally powered</li> </ul> <h2 id="specifications">Specifications</h2> <h3 id="mechanical">Mechanical</h3> <ul> <li>Case size: 24.6 x 20.3 x 25.9 cm (9.7 x 9.8 x 10.2 inches)</li> <li>Weight: 6.6 kg (14.5 lbs.)</li> </ul> <h3 id="electrical">Electrical</h3> <h4 id="logic-power">Logic Power</h4> <ul> <li>Logic supply: 9 to 140 V</li> <li>Peak current draw: 1.6 A</li> <li>Average current @ 12 V: &lt;1 ampere</li> </ul> <h4 id="input-power">Input Power</h4> <ul> <li>Touch Proof SurLok Plus™ Connectors</li> <li>11 to 400 volts</li> </ul> <h3 id="transmitter-control">Transmitter Control</h3> <ul> <li>GDP receiver</li> <li>XMT-series</li> <li>ZEN</li> </ul> <h3 id="output">Output</h3> <ul> <li>Peak current: 30 Ampere unregulated</li> <li>11 to ~400 volts</li> <li>Over-current shutdown (set for 33 A)</li> <li>IGBT current switch</li> <li>Power removed from transmitter output during fault conditions</li> </ul> <h3 id="transmitter-frequency">Transmitter Frequency</h3> <ul> <li>DC to 32 Hz time domain</li> <li>DC to 8196 Hz frequency domain</li> </ul> <h3 id="current-monitor">Current Monitor</h3> <ul> <li>4 mm Sheathed Banana Jack</li> <li>Isolated output</li> <li>10 mV/Ampere</li> </ul> <h2 id="controls--displays">Controls &amp; Displays</h2> <h3 id="switches">Switches</h3> <ul> <li>Transmit / Reset (illuminated)</li> <li>Range (Current display)</li> <li>Display Select</li> <li>LED Displays</li> </ul> <h3 id="fault-indicators">Fault Indicators</h3> <ul> <li>Logic Power Over-, Under- Voltage</li> <li>Input Over Current</li> <li>Output Over Voltage</li> <li>Output Over Current</li> <li>Over Temperature</li> <li>Input Over Voltage (DC-Link)</li> </ul> <h3 id="volt-meters">Volt Meters</h3> <ul> <li>Input Voltage</li> <li>Logic Voltage</li> </ul> <h3 id="status-meter">Status Meter</h3> <ul> <li>Output current</li> <li>Turnoff time</li> <li>Heat sink temperature</li> <li>Input power</li> </ul> <h3 id="status-indicators">Status Indicators</h3> <ul> <li>Transmitting (Illuminated switch)</li> <li>Reset (2s Illuminated switch)</li> <li>Output Polarity LEDs</li> <li>Period (on front side panel)</li> <li>Duty Cycle (on front side panel)</li> </ul> <h2 id="applications">Applications</h2> <ul> <li>TEM transmitter</li> <li>TD &amp; FD Resistivity/IP</li> </ul> <p><a href="./documents/zt30b.pdf">Download Specification Sheet for ZT-30B</a></p>http://www.zonge.com/instruments/sensors/ant6/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/sensors/ant6/<h2 id="overview">Overview</h2> <p>The ANT-6 is a multipurpose low-noise induction magnetometer designed for AMT and CSAMT work across a wide audio-frequency bandwidth. Its compact form factor, battery-powered operation, and stable transfer function make it a practical field sensor for crews that need strong performance from <code>0.1 Hz</code> into the <code>10 kHz</code> range.</p> <figure class="zonge-inline-figure zonge-inline-figure-light" style="max-width: 760px; margin-left: auto; margin-right: auto;"> <img src="./img/antennas/ant6response.jpg" alt="ANT-6 response plot." class="img-responsive" style="max-width: 760px; width: 100%;"> <figcaption>ANT-6 response plot.</figcaption> </figure> <h2 id="where-it-fits">Where It Fits</h2> <ul> <li>AMT programs</li> <li>CSAMT surveys</li> <li>Broadband magnetic field acquisition</li> <li>Campaigns where compact, battery-powered sensors are preferred</li> </ul> <h2 id="key-specifications">Key Specifications</h2> <ul> <li>Optimal frequency range: <code>0.1 Hz to 10 kHz</code></li> <li>Sensitivity: <code>250 mV/nT</code></li> <li>Noise at <code>1 Hz</code>: <code>240 fT/sqrt(Hz)</code></li> <li>High-pass corner: <code>1 Hz</code></li> <li>Low-pass corner: <code>10 kHz</code>, <code>3 pole</code></li> <li>Length: <code>919 mm</code></li> <li>Weight: <code>3 kg</code></li> <li>Power supply: <code>3 x 9 V batteries</code></li> <li>Supply current: <code>5.6 mA</code></li> <li>Standard connector: <code>PT02A-4-8S</code></li> </ul> <h2 id="why-customers-choose-it">Why Customers Choose It</h2> <p>The ANT-6 is well suited when projects need wide-band audio-frequency coverage in a proven field package. It offers a strong balance of sensitivity, portability, and ease of deployment for everyday AMT and CSAMT operations.</p>http://www.zonge.com/instruments/sensors/ant7/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/sensors/ant7/<h2 id="overview">Overview</h2> <p>The ANT-7 is a compact, very low-noise induction magnetometer designed for surveys that need strong low-frequency performance while keeping antenna length to a minimum. It is especially attractive where a shorter sensor is operationally helpful, including use as a vertical or companion channel alongside larger MT magnetic sensors.</p> <h2 id="where-it-fits">Where It Fits</h2> <ul> <li>MT surveys needing compact low-noise magnetic sensing</li> <li>Configurations where antenna length matters</li> <li>Vertical channel acquisition</li> <li>Multi-sensor layouts alongside larger induction coils</li> </ul> <h2 id="key-specifications">Key Specifications</h2> <ul> <li>Optimal frequency range: <code>100 uHz to 1 kHz</code></li> <li>Sensitivity: <code>100 mV/nT</code></li> <li>Noise at <code>1 Hz</code>: <code>85 fT/sqrt(Hz)</code></li> <li>High-pass corner: <code>0.031 Hz</code></li> <li>Low-pass corner: <code>1 kHz</code>, <code>3 pole</code></li> <li>Length: <code>959 mm</code></li> <li>Weight: <code>4.75 kg</code></li> <li>Power supply: split supply <code>+/-9.5 V</code> to <code>+/-18 V</code></li> <li>Supply current: <code>7.5 mA</code></li> <li>Standard connector: <code>PT07A-12-8S</code></li> </ul> <h2 id="why-customers-choose-it">Why Customers Choose It</h2> <p>The ANT-7 gives customers a compact low-frequency magnetic sensor without giving up the low-noise character required for demanding MT work. It is a practical option when deployment geometry or channel layout needs a shorter antenna.</p>http://www.zonge.com/instruments/tx/ggt30/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/tx/ggt30/<h2 id="overview">Overview</h2> <p>The GGT-30B is a high-power broadband geophysical transmitter built for demanding time-domain and frequency-domain field programs. Its constant-current architecture, fast turn-off performance, and rugged modular package make it a strong choice for crews working with large loops or grounded dipoles in challenging environments.</p> <p>The GGT-30B is especially well suited for customers already operating a ZMG-30 series generator package. For many new deployments, Zonge may instead recommend a <a href="./instruments/tx/zt100/">ZT-100B Geophysical Transmitter</a> depending on the planned power system and survey configuration.</p>http://www.zonge.com/instruments/sensors/ant9/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/sensors/ant9/<h2 id="overview">Overview</h2> <p>The ANT-9 Borehole Magnetometer is designed for downhole magnetic measurements where sensor diameter and length are tightly constrained. Despite its compact borehole-ready package, it offers low noise performance across a broad frequency range, making it a strong option for integrated borehole and downhole tool designs.</p> <h2 id="where-it-fits">Where It Fits</h2> <ul> <li>Borehole and downhole applications</li> <li>Compact tool strings with strict diameter limits</li> <li>Magnetic measurements from <code>1 Hz</code> into the <code>30 kHz</code> range</li> <li>Projects needing low-noise induction sensing in confined geometries</li> </ul> <h2 id="key-specifications">Key Specifications</h2> <ul> <li><code>3 dB</code> bandwidth: <code>1 Hz to 30 kHz</code></li> <li>Sensitivity in passband: <code>100 mV/nT</code></li> <li>Sensor noise at <code>1 Hz</code>: <code>1.4 pT/sqrt(Hz)</code></li> <li>Sensor noise at <code>100 Hz</code>: <code>0.011 pT/sqrt(Hz)</code></li> <li>Sensor noise at <code>1 kHz</code>: <code>0.0025 pT/sqrt(Hz)</code></li> <li>Sensor noise at <code>10 kHz</code>: <code>0.003 pT/sqrt(Hz)</code></li> <li>Length: <code>343 mm</code></li> <li>Weight: <code>1.36 kg</code></li> <li>Maximum outside diameter: <code>35.5 mm</code></li> <li>Minimum power supply: <code>+/-9.5 V</code></li> <li>Maximum power supply: <code>+/-15 V</code></li> <li>Supply current: <code>6.5 mA</code></li> </ul> <h2 id="why-customers-choose-it">Why Customers Choose It</h2> <p>The ANT-9 is the specialized choice for customers building or integrating borehole systems that need compact dimensions without sacrificing the magnetic bandwidth required for demanding downhole work.</p>http://www.zonge.com/instruments/sensors/tem4/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/instruments/sensors/tem4/<h2 id="overview">Overview</h2> <p>The TEM-4 is a single-channel magnetic field antenna developed for transient EM, CSAMT, and other EM survey configurations where crews need vertical or horizontal field measurements in a compact package. It can be used inside or outside the transmitting loop for transient work, and multiple units can be combined when more than one axis is required.</p> <h2 id="where-it-fits">Where It Fits</h2> <ul> <li>TEM surveys</li> <li>CSAMT projects</li> <li>Single-axis magnetic field measurements</li> <li>Multi-axis layouts using multiple antennas</li> </ul> <h2 id="key-specifications">Key Specifications</h2> <ul> <li>Optimal frequency range: <code>1 Hz to 20 kHz</code></li> <li>Effective area: <code>15,000 m2</code></li> <li>Minimum detectable signal: <code>1 x 10^-3 nanotesla/sec</code></li> <li>Maximum detectable signal: <code>62 x 10^3 nanotesla/sec</code></li> <li>Length: <code>500 mm</code></li> <li>Weight: <code>2.27 kg</code></li> <li>Power supply: <code>3 x 9 V batteries</code></li> <li>Typical operating life: <code>6 days at 10 hours/day</code></li> <li>Supply current: <code>6.5 mA</code></li> <li>Standard connector: <code>PT-02E-8-4S</code></li> </ul> <h2 id="options">Options</h2> <ul> <li><code>STAND/Z</code> for vertical measurements</li> <li><code>STAND/XZ</code> for combined vertical and horizontal measurements</li> </ul> <h2 id="why-customers-choose-it">Why Customers Choose It</h2> <p>The TEM-4 is a practical EM survey antenna for crews that need a compact magnetic sensor with straightforward field handling, optional mounting accessories, and coverage appropriate for common TEM and CSAMT programs.</p>http://www.zonge.com/blog/2023/12/07/ameroundup/Thu, 07 Dec 2023 21:29:20 +0200http://www.zonge.com/blog/2023/12/07/ameroundup/<p>Zonge will be attending the next Roundup in Vancouver. Please join us at Booth XYX and discuss how Zonge&rsquo;s next generation of EM, Magnetics, and Gravity tools can energize your exploration program.</p>http://www.zonge.com/blog/2023/12/04/ip-csem/Mon, 04 Dec 2023 13:47:08 +0200http://www.zonge.com/blog/2023/12/04/ip-csem/<p>Induced Polarization is a special case of the Controlled Source Electromagnetic (CSEM) method where the resistivity is a function of frequency. By modeling the entire physics of the EM response, covering the entire frequency range, can both inprove the interpretability of the IP response and extend the depth of investigation of investigation.</p>http://www.zonge.com/blog/2023/12/01/amt-64/Fri, 01 Dec 2023 13:50:46 +0200http://www.zonge.com/blog/2023/12/01/amt-64/<p>We have developed a new magnetic field sensor, which covers the entire frequency band from 10 KHz to 1000 seconds without interruption of the acquisition process. The noise envelope of this sensor meets or exceeds the performance of all competing sensors.</p>http://www.zonge.com/blog/2023/12/01/tem-4/Fri, 01 Dec 2023 13:50:46 +0200http://www.zonge.com/blog/2023/12/01/tem-4/<p>The sensor development team has created a dB/dT sensor with an effective area of 15,000 m^2. This sensor is both smaller than the legacy TEM-3 and lower noise than the older sensor.</p>http://www.zonge.com/contact/Mon, 01 Jan 0001 00:00:00 +0000http://www.zonge.com/contact/<h1 id="what-can-we-help-you-with">What can we help you with?</h1> <p>For field services, legacy data, or new instrument purchases, please contact our <strong>Reno office</strong> at <a href="tel:+17753557707">(775) 355-7707</a>.</p> <p>For product support, please contact our <strong>Tucson office</strong> at <a href="tel:+15203275501">(520) 327-5501</a>.</p> <p>Have questions concerning how geophysics might advance your project or need assistance in configuring a suite of instruments to meet your local challenges?</p> <p>Please feel free to contact us and we will do our best to assist you.</p>