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Construction & real estate›💡Electronic & Electrical›🍎Food & Beverages›🛋️Home furnishing & supplies›⚗️Industrial goods & chemical›🪨Minerals & metals›📦Miscellaneous›
Agriculture›
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Construction & real estate›💡Electronic & Electrical›🍎Food & Beverages›🛋️Home furnishing & supplies›⚗️Industrial goods & chemical›🪨Minerals & metals›📦Miscellaneous›The WDJD-4 Multi‑function Digital DC Resistivity/IP Meter is offered by Chongqing Gold Mechanical & Electrical Equipment Co., Ltd and is designed for simultaneous resistivity and induced‑polarisation surveys. It provides a voltage channel of ±6 V, an input impedance of ≥50 MΩ, and a current channel capable of 5 A with a survey precision of ±5 % for currents above 10 mA. The transmitter can reach a maximum voltage of 900 V, the instrument operates from - 10 °C to 50 °C, tolerates 95 % relative humidity, and weighs no more than 7 kg with dimensions of 310 mm × 210 mm × 210 mm.
The device follows typical industry practice for field‑ready resistivity gear, where voltage ranges often extend to ±1000 V and input impedances exceed 10 MΩ to minimise loading effects. Standard battery packs for comparable units are eight D‑size alkaline cells or equivalent Ni‑Cd packs, providing several hours of operation. Accuracy of ±1 % or better and suppression of at least 80 dB at 50 Hz are common performance targets, matching the specifications listed for the WDJD‑4.
Typical buyers include geological survey firms, mining contractors, civil‑engineering consultants and government agencies responsible for water‑resource or infrastructure investigations. The equipment is supplied as a complete set with a mainframe, USB communication line, charger, power input line, instrument backpack, Windows software, operational manual and both unpolarised and iron electrodes. Trade terms such as minimum order quantity, exact pricing and delivery schedule are not disclosed in the listing and should be confirmed directly with the supplier before placing an order.
| Voltage channel | ±6 V |
| Input impedance | ≥50 MΩ |
| Current channel maximum | 5 A (when voltage ≤ 900 V) |
| Voltage maximum | 900 V |
| Current maximum | 5 A |
| Suppression (50 Hz) | ≥80 dB |
| Operating temperature | -10 °C to 50 °C |
| Maximum humidity | 95 % RH |
| Weight | ≤7 kg |
| Dimensions (L×W×H) | 310 mm × 210 mm × 210 mm |
| Typical battery type | 8 D‑size alkaline or Ni‑Cd (typical) |
| Typical data interface | USB communication line (typical) |
| Typical measurement accuracy | ±1 % (typical) |
| Typical cable length for electrodes | up to 100 m (typical) |
| Typical safety standard | IEC 61010 compliance (typical) |
Chongqing Gold Mechanical & Electrical Equipment Co., Ltd is located at No. 9‑10, 23 Nanping West Road, Chongqing 400060, China. The supplier is listed with a harbour‑tier verification, indicating that basic corporate details have been confirmed by the marketplace, while the response rate shown is 0 %, meaning no replies have been recorded to date.
The company’s current catalogue highlights the WDJD‑4 underground water finder system, which includes a mainframe, USB communication line, charger, 4 V power input line, instrument backpack, Windows analysis software, an operational manual and a set of both unpolarised and iron electrodes. No additional product lines, certifications or historical performance data are provided in the listing.
| 企业类型 | Supplier |
| 成立年份 | Contact Supplier |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| 响应时间 | <4h |
| 响应率 | Contact Supplier |
Before placing an order, verify that the voltage and current specifications meet the requirements of your survey methodology, and confirm the presence of the listed accessories such as the USB line and electrode set. Request a copy of the latest datasheet and any available test reports to ensure the instrument complies with industry safety standards, for example IEC 61010, even if the supplier has not listed formal certification.
Discuss logistics early: ask the supplier which Incoterms they can offer, typical lead times for manufacturing and shipping from Chongqing, and whether they can arrange freight forwarding to your preferred port. Payment methods should be clarified, with common options including T/T, L/C or escrow, and any advance deposit requirements must be agreed in writing before production begins.
Arrange a third‑party inspection before shipment to confirm that the unit matches the declared specifications, that the battery pack is of the correct type and that all accessories are present. Request a factory calibration certificate, a test report for voltage accuracy and a humidity‑resistance test result, and retain these documents for customs clearance and future quality audits.
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