How to test the surface resistance of anti-static mat and anti-static box
The ACL380 Heavy Duty Surface Resistance Tester measures both surface impedance and ground resistance from a wide range of 103 ohms/□ to 1012 ohms/□ with an accuracy of ±1/2 range.
ACL-380 uses ASTM standard D-257 parallel electrode sensing method to easily and repeatedly measure various conductive, electrostatic discharge and insulated surfaces.
Use:
To measure the surface impedance, place the watch on the surface to be tested, press and hold the red TEST button, and the continuously lit light-emitting diode (LED) indicates the magnitude of the measured surface impedance.
103=1 kohm green LED
104=10 kohm green LED
105=100 kohm green LED
106=1 mega ohm yellow LED
107=10 megaohm yellow LED
108=100 megaohm yellow LED
109=1000 megaohms yellow LED
1010=10000 megaohm yellow LED
1011=100000 megaohm yellow LED
1012=1000000 megaohms red LED
>1012=Insulation Red LED
Measuring ground resistance
Plug the ground wire into the ground socket so that the right side detection electrode of the meter is insulated (on the same side as the socket). Clip the crocodile to your ground.
Place the watch on the surface to be tested, press and hold the TEST button, and the LED that continues to illuminate indicates the magnitude of the resistance to ground. The unit of this measurement is ohms.
Parameters:
Power: 9 volt PP3 alkaline battery
Measuring voltage: rated 9 volts
Relative humidity: 0% to 90% (no condensation)
Accuracy: ±10%
Repeat error: ±5%
Weight: 170 g (60Z)
Size: 127 × 76 × 26
ACL-380 surface impedance meter calibration method
Calibration cycle:
The ACL-380 surface impedance meter should be calibrated every twelve months.
Using a decimal resistance box, connect the standard measuring resistor across the two parallel electrodes of the ACL-385 meter to verify that the impedance values displayed are correct.
Parameters:
Power: 9 volt PP3 alkaline battery