CORROSION MITIGATION INSTRUMENTATION
P. O. BOX 1667 SAN BERNARDINO, CA 92402 TEL: (909) 890-0700 FAX: (909) 890-0736
PRODUCT INSTRUCTIONS
MODEL SR-2 SOIL RESISTIVITY METER
SPECIFICATIONS:
• SR-2 resistivity measurement range
o 4 PIN Method 0.1 Ω to 3.3 MΩ.
o 2 PIN Method 0.03 Ω to 10 MΩ
• Accuracy of measurements of 10% or better.
• Overload circuit that helps the user to identify the correct measurement range.
• Measurement results displayed on a LCD display.
• Unit operates from a 12V rechargeable battery.
• Soil Resistivity meter can be recorded on DL-1 data logger.
• Has Low Battery Voltage indicator.
• LED charging light indicator.
ACCURACY:
The reading accuracy is ±10% on full range and ±5% on 85% of measurement range, which can be verified
by a decade box as required by ASTM G 57 – 95a Standard.
The instrument operates at 97Hz ± 10% AC current as defined by the ASTM G 57 – 95a standard to
prevent electrode polarization. The internal circuitry is designed in such way that it will reject any common
mode noise and external EMI interference.
EXTERNAL REFERENCES:
• ASTM G57-95a Standard can be obtained by visiting www.astm.org.
• AASHTO T-288 a Standard can be obtained by visiting www.transportation.org
• NACE Internationals, “Peabody’s Control of Pipeline Corrosion, Second edition”, pages 84, 105
can be obtained by visiting www.nace.org
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