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Geophysical logging

Measurement in hole

Multipurpose logging by various logging probes

　
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McOHM-EL

Cost effective system with two functions i.e. conventional resistivity survey and electric logging in on unit

McOHM-EL is a new concept in resistivity meters, as it not only measures conventional resistivity but also a number of borehole parameters can be logged.
The tools supported are normal resistivity, temperature and caliper.
This combination gives the geoengineer greater opportunity to prove his interpretation.
Despite this added flexibility the system has been kept low in cost, thus giving better value to the user.
It incorporates advance feature such a 24 bit Delta Sigma converter, LCD display, high resolution printer and floppy disk for storage.

● Resistivity meter with borehole logging function

● 24 bit Delta-Sigma A/D converter

● High resolution thermal printer

● Floppy Disk storage 720KB/ 1.2MB/ 1.44MB

● High transmitting voltage 400V

● Light weight 8kg

■	Resistivity Measuring Mode

	Resistivity Meter
	Maximum Transmitting Voltage Transmitting Current Cycle Time Measuring Range Resolution	：400V (800Vpp) ：2, 20, 60, 120mA (constant current method) ：2, 3, 4 seconds ：±5V ：1μV (24 bit Delta Sigma A/D converter)

■	Borehole Logging Mode

	Electric Resistivity Logging
	Normal Resistivity Probe (Model-3143)
	Electrode Spacing Measuring Range Cycle Time	：25, 50, 100cm ：1Ω to 10KΩm ：60ms (16.7Hz)
	Transmitting Voltage/Current Same as Resistivity Meter

	Temperature logging
	Temperature logging Probe (Model-3571)
	Measuring Range Accuracy	：0 - 70℃ ： ±2%FS

	Caliper logging
	Caliper logging Probe (Model- 3973)
	Measuring Range Accuracy	：50 - 100mm ：±2%FS

■	System

	Floppy Disk Thermal Printer Paper Size Plot Width Resolution Display Power Operating Voltage Current Operating Temperature Physical Dimensions Weight	：MS-DOS, 3 MODE (720KB, 1.2MB, 1.44MB) ：110mm ：104mm ：8 dots/mm ：LCD, 192 x 128 dots (with back light) ：12VDC ：1.5A (standby), 7A (max.) ：0 - 45℃ ：330 x 270 x 210 mm ：8 kg

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McOHM-EL and various products (probe and peripherals)


	E-mail ：seihin@oyo.jp