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Electric detection

Horizontal electric profiling method

Grasp of flat distribution of aquifer comparatively shallow (less than 50m) etc.

　
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McOHM Profiler4

4-channel resistivity meter with built-in 32ch scanner and high power transmitter.

The McOHM Profiler-4 is specially designed to apply for the environmental studies to monitor the spread of soil contamination by waste oil or to detect the leakage at garbage disposal areas, which are recently highlighted as social problems, with efficiency. The system is incorporated with the electrode switching function for 32 electrodes, the 4 channel-receiver circuit with high resolution 24 bits Sigma-Delta A/D converter, the power supply circuit to inject 400V max. (800V peak-to-peak) /120mA and the PC based controller supported by the latest technology. Furthermore, monitoring and displaying of both the current waveform and the potential waveform is effective to control the quality of data.

● Any electrode array (pole-pole, pole-dipole, dipole-dipole, etc.) for the measurement is available.

● 4-channel simultaneous measurement can shorten the data acquisition time at site.

● The system is expandable up to 288 electrodes with external scanners.

● Full-automatic measurement with the control program, automatic timed measurement by the internal
　 clock and the remote control via RS-232C are equipped.

● Plotting function of decay curve for pole-pole array is effective to control the quality of data at site.

● The measured data can be stored either in large capacity of internal hard disk, ZIP or floppy diskette.

● Cost effective and downsized system with light in weight.

■	Transmitter

	Maximum output current Maximum output voltage Cycle	：2, 20, 60 and 120mA(constant current) ：400V (800V peak-to-peak) ：1, 2, 4 and 8 seconds

■	Receiver

	Number of channels Input impedance A/D resolution Voltage sensitivity Electrode array Measurement mode SP compensation	：Number of channels: 4 channels (independent) ：10MΩ ：24 bits ：0.5μV ：any array ：automatic, timed and manual measurement ：automatic compensation by D/A converter

■	Scanner
	Temperature logging Probe (Model-3571)
	Internal scanner External scanner	：Internal scanner ：Max. 256 electrodes every 64 channels, total 288 electrodes

■	System control
	CPU Storage media Interface Display Display parameters Power requirement Power consumption Dimensions	：Card PC, AT compatible 586 ：HDD, ZIP and FDD ：RS-232C ：10.4”, color LCD, VGA compatible ：Display parameters: injected current, 4ch potential waveform, measured values, decay curve (pole-pole array only) ：10.5V to 14V DC ：1.5A (standby), 8A (max) ：330 x 270 x 250 mm

■	Applications

	Long term monitoring of leakage at garbage disposal areas Investigation of soil contamination by waste oil Judgment of effectiveness of grouting Research and studies of liquefaction Investigations for dams and tunnels Landslide monitoring Ground water exploratio

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■ System diagram

■ Scanner 64 (for expansion)

Number of electrodes
Communication interface
Power requirement
Power consumption
Dimensions

：64 electrodes
：RS-485
：10.5V to 14VDC
：1A (standby), 2A (max)
：330 x 270 x 220 mm


	E-mail ：seihin@oyo.jp