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McOHM Profiler-4 (Discontinued)

  • The McOHM Profiler-4 is a multi-channel digital resistivity meter. It has switching functions for 32 electrodes and four (4) receiver circuits with high resolution 24 bit delta sigma type A/D converters. Also, it can output 400 V (800 Vp-p) – 120 mA at a maximum.


It is based on Windows XP operating system and equipped with a color display, flash solid state drive (SSD), USB 2.0 ports and so on, which gives the instrument superior operability. Current waveform, potential waveform and decay curve can be checked on its display easily, so it is possible to monitor the quality of data effectively at a site.


■ Compact, lightweight and low-power-consumption design

■ Various electrode arrays (Pole-pole, pole-dipole, dipole-dipole, etc.) are available

■ When used with SCANNER64 (MODEL-2141), measurement can be expanded up to 288 channels

■ When used with a Power Booster (MODEL-2142), the maximum output current can be increased up to 1A



CPU ULV Intel Celeron Processor 600MHz
OS Windows XP Professional
System memory 512 MB
Display LCD 10.4" XGA (1024x768 pixels)
Data storage device 2.5" SSD 32GB SLC
Interface USB 2.0,  2 ports (front panel)

USB 2.0,  1 port  (rear panel, only for mouse use)

PS/2 keyboard I/F

Supply voltage DC 10.5-13.5 V (standard DC 12 V)
Operating environment 0-45 degrees C (ambient temperature)
Dimensions 330 mm (W) x 280 mm (D) x 280 mm (H)
Weight 12 kg

Transmitter part

Output method constant-current, alternative DC current (positive-negative)
Output voltage Maximum 400 V (800 Vp-p)
Output current 2, 20, 60, 120 mA

250, 500, 750 or 1000 mA (with power booster)

Output cycle 0.5, 1, 2, 4, 8 seconds

Receiver part

The number of channels 4 channels
Input impedance 10 M ohm
Input range ± 10 V
A/D resolution 24 bits
 SP compensation  Automatic compensation according to DAC for the whole channel (compensation range ±10 V)
 Measure against serge  Arrester(SPD) is inserted in the input of each channel

Scanner part

Internal scanner 32 channels
External scanner Up to four (4) units of an external 64 channels Scanner(MODEL-2141 : SCANNER64) can be connected
Control system RS485 half-duplex, communication speed of 9600 bps
Switching elemen Current electrode (C pole) is a latching type mechanical relay

Potential electrode (P pole) is a photo-mos relay


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