Surface Resistance Tester Surface resistivity tester - SURPA-385

Surface Resistance Tester Surface resistivity tester

The SURPA-385 instrument test both surface resistivity and resistance to ground.Giving simple repeatable measurements of conductive,static dissipative and Insulative surface.The checker emloys the ASTM standard D-257 method of parallel bar sensing.Ranging is automatic due to the use of high speed OP-AMP Integrated circuits being linear,with change over points + or – 1/2 dcade on a logarithmic scale (lor-10% from mean value per unit).

Remove the battery compartment and panel and check that a good quality PP3 Alkaline battery has been fitted.Hold the checker away from any surface and press the test button;the Insulative red LED light.

Place the checker onto the surface that requires testing,again press the test button and hold.The LED that illuminates constantly is the decade measured.

10/3 =1kilohm Green LED

10/4 =10kilohms Green LED

10/5 =100kilohms Green LED

10/6 =1megohm Yellow LED

10/7 =10megohms Yellow LED

10/8 =100megohms Yellow LED

10/9 =1,000megohms Yellow LED

10/10 =10,000megohms Yellow LED

10/11 =100,000megohms YellowLED

10/12 =1,000,000megohms Red LED

>10/12 =Insulative RedLED

Checking Resistance to ground

Insert the ground/Earth leakage lead into the ground/Earth leakage socket. This is lates the test probe on the right side of the meter.(the same blue as the socket).Connect the croc clip to your ground connection.

Place the checker on to the surface to be tested, press and hold the test button. The LED that illuminates constantly is the decade measured. The measurement will be resistance to ground in ohms instead of ohms per square.

Calibration

The checker should be calibrated on average every 12months.A test resistance can applied across the parallel bars to verify if the checker is within spemfication, using a resistance decade box. Calibration can be obtained by contacting your supplier.

Specification

Power supply 9 volt PP3 alkaline battery

Test Voltage Nominal 9 volts

Temperature Range

Operating 40⁰F to 120⁰F

(5⁰F to 49⁰F)

Storage (-15⁰C to +60⁰C)

Relative Humidity 0% to 90% (non-condensing)

Resolution One order of magnitude

Changeover Point 1/2 decade on a logarithmic scale (3.16×10n)

Changeover Point Accuracy +/-1/2 decade

Accuracy +/-10%

Repeatability +/-5%

Weight 6 ounce

Dimensions 130mm × 70mm ×25mm

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