The 740 Surface Resistance Checker is a pocket-sized instrument providing fast and repeatable measurements of conductive, static dissipative and insulative surfaces.
The 740 measures both surface resistivity and resistance to ground.
It uses the ASTM Standard D257 method of parallel barsensing.
For surface resistance, place the 740 on the flat surface to be measured, press the button and hold. The LED that illuminates is the decade measured in ohms/square.
For resistance to ground measurement, insert the ground ,cord connector into the metal socket on the right hand side of the body. Then connect the crocodile clip to earth and, place the 740 on the surface to be tested. Press the button—the reading is resistance to ground in Ohms.
Automatic ranging.
Supplied with carrying case, battery and earth lead.
CE Certified.740 measures both surface resistivity and resistance to ground.
Specification
Range:
10³-10¹²+ Ohms per Square.
Resolution:
One order of magnitude.
Changeover Point:
½ decade on logarithmic scale (3.15 x 10n).
Accuracy of changeover point:
+/- ½ decade.
Accuracy:
+/- 10%. Repeatability: +/- 5%
Test Operation:
Test battery - press button when holding in free air- the red Insulative LED should illuminate.
Battery:
9V PP3 alkaline.
Size, Weight:
130mm x 70mm x 35mm, 103g.
Operating Conditions:
Temperature 5° - 50°C. Humidity 0-90% rH (non-condensing).
商 品 其 它 備 註
大台北尖端儀器有限公司
ABTEK CORP.
10491 台北市中山區林森北路614號5樓(藝鴻商業大樓)
5F., No. 614, Linsen N. Rd., Zhongshan Dist., Taipei City 10491, Taiwan (R.O.C.)
