This small pocket watch can measure the surface impedance detection, but also to measure resistance to ground, wide range, from 103 ohms / to 1012 ohms / , an accuracy of 1/2 range. Using ASTM Standard D-257 parallel electrodes sensing method, you can easily and repeatedly measure various conduction types, electrostatic discharge, Insulated surfaces.

Specifications:

Power supply: 9 volt PP3 alkaline battery
Measuring voltage: 9 V
Temperature range: Operating temperature 5 degrees C to 49 degrees C
Storage temperature: -15 degrees Celsius to 60 degrees Celsius
Relative humidity: 0% to 90% (non-condensing)
Measuring intensity: 10 orders of magnitude
Transition point: 1/2 pairs of numbers (3.16 × 10n)
Transition point accuracy: ± 1/2
Accuracy: ± 10%
Repeatability: ± 5%
Weight: 170 g
Size: 130 × 70 × 25 (mm units)

Operation:

To measure the surface impedance, measured on the surface of the table, press the red measurement (TEST) button, continuous bright light emitting diode (LED) that indicates the magnitude of the impedance of the measured surface.

103 = 1k ohms green LED
104 = 10k ohms green LED
105 = 100k ohms green LED
106 = 1M ohms yellow LED
107 = 10M ohm yellow LED
108 = 100M ohm yellow LED
109 = 1000M ohm yellow LED
1010 = 10,000M ohm yellow LED
1011 = 100,000M ohm yellow LED
1012 = 1000,000M ohm red LED
1012 = insulated red LED

To measure resistance to ground. Connect The ground wire into the ground (Ground) socket, so that the right side of the table insulated the detection electrode. The alligator clip to hear from you on the ground.
Measured on the surface of the table, press the measure (TEST) button, sustained glowing LED indicates the resistance value of the order on the ground. Measured value is in ohms.
Calibration cycle DS-385 surface impedance meter calibration method Be calibrated every twelve months DS-385 surface impedance meter.
Adopt a decade resistor box, the standard measure resistance across the DS-385 table between two parallel electrodes to test its resistance value displayed is correct.