The Pinion/Voyager model SRM-110 Combination Surface Resistivity meter is a simple to use, highly repeatable measuring device for determining the surface resistivity of materials, as well as resistance to ground. The SRM-110 incorporates a revolutionary threepoint probe measuring technique, enabling accurate, consistent, and repeatable surface measurements. The principle of operation is as follows:
A voltage, V(30 Volts), is applied to each of the three outer probe contacts (Figure 1). The center probe contact (spring loaded) provides a ground return of the current supplied by the three outer probe contacts.
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Power supply: Rechargeable NiCad or nickel metal hydride batteries (4 “C” size).
Test Voltage: 30 Volts +/- 2 Volts current limited to 2 mA.
Contact Area: 0.0123 sq in/probe
Contact Pressure: 40-lbs/sq in/probe.
Contact material: Conductive rubber.
Dimensions: 3”H x 4”D x 5” W
Weight: 2 pounds
10^4 <10^4
10^5 10^4.4 – 10^5.5
10^6 10^5.5 – 10^6.5
10^7 10^6.5 – 10^7.5
10^8 10^7,5 – 10^8.5
10^9 10^8.5 – 10^9.5
10^10 10^9.5 – 10^10.5
10^11 10^10.5 – 10^11.5
10^12 10^11.5 – 10^12.5
10^12.5 >10^12.5
Accuracy: Indicated exponent +/- .3
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