Mass data storage Multi-Function DC resistivity meter device for
mine induced polarization survey
PRODUCT DESCRIPTION
WDJD-4A is a cutting-edge tool designed to provide high-accuracy
measurements of direct current resistance. This advanced device is
particularly suited for gauging the DC resistance of transformer
windings and high-power inductive equipment.
FEATURES & FUNCTION
►For general resistivity and IP survey function, 8 types of
electrode arrays are available. Electrode distance (namely
“Schedule”) can be inputted or called. Geometric factor K can also
be generated automatically or calculated manually.
►For multi-electrode 2D resistivity imaging function, 18 types of
electrode arrays are available. Extendable cross-section roll-along
scan measurement allows the measuring cross-section to be prolonged
unlimitedly without adding more electrodes. It is suitable for long
cross-section survey and for solving geologic problems under any
condition with low cost and high efficiency.
►Schedule: the schedule can memorize 100 groups of electrode
distances, avoiding repetitive input. Or you just input a schedule
ID and set step to call the corresponding electrode distances.
► Earth resistance inspection: earthing condition can be inspected
at any time.
► Mass data storage: WDJD-3A can memorize 3500 readings of data for
resistivity and SP survey, 2500 readings of data for induced
polarization (chargeability) survey and 43680 readings of data for
multi-electrode 2D Resistivity Imaging.
► All parameter and data are under power-failure protection; and
thus data will not be lost even thought the system shuts down
accidentally.
► RS-232C port enables it to transfer data to computer.
►Diagnostic program finds fault or failure and damaged parts
quickly and accurately.
► Sealed constitution: featuring waterproof and dustproof design,
long life time and so on.
Utilizing state-of-the-art switch power technology, our instrument
features a high-performance LCD display that allows for easy
reading of measurement data. With its automatic arc extinction
function, you can be assured of both enhanced accuracy and
efficiency during testing procedures.
PRODUCT SPECIFICATION
Receiving unit
Voltage channel: ± 6V, precision: if Vp≥10mV, ± 5‰ ± 1LSB; if Vp
< 10mV, ±1% ± 1LSB.
Input impedance: ≥50MΩ
Apparent polarizability precision: ±1% ± 1LSB
SP compensation range: ±1V
Current channel: 5 A, precision: if Ip≥ 10mA, ± 5‰ ± 1 LSB; if Ip
< 10 mA, ±1% ± 1 LSB.
Suppression: ≥80dB for 50Hz frequency industrial and electrical
interference (common mode interference or differential mode
interference).
Transmitting unit
Maximum transmitting power: 4500W (only when conducting general
resistivity/IP survey. Regarding multi-electrode resistivity
imaging, maximum transmitting power is 1125W which is limited by
WDZJ-4 switcher
Maximum voltage output: 900V (1800V peak to peak, only for
general resistivity/IP survey. Regarding multi-electrode
resistivity imaging, maximum transmitting voltage is 450V DC which
is limited by WDZJ-4 switcher)
Maximum current output: 5A (only for general resistivity/IP
survey. Regarding multi-electrode resistivity imaging, maximum
current output is 2.5A DC which is limited by WDZJ-4 switcher)
Pulse width: 1~60s, duty ratio 1:1
Others
Working temperature: -10℃~50℃, 95 %RH
Storage temperature: -20℃~60℃
Mainframe power source: eight size-D dry cells (or nickel-cadmium
batteries of the same specification)
Overall current: ≤ 55mA Weight: ≤ 7 Kg Dimension (L×W×H):
310mm x 210mm x 210mm
Working temperature: -10°C~50°C
APPLICATION
CONTACT INFORMATION
