ACL380 Electrostatic Resistance Tester
The electrostatic resistance tester ACL380 is usually called a surface impedance tester. ACL380 can measure both surface impedance and ground resistance. It has a wide range, from 103 ohms/□ to 1012 ohms/□, and an accuracy of ±1/2 range. ACL-380 uses the ASTM standard D-257 parallel electrode sensing method, which can easily and repeatedly measure various conductive, electrostatic discharge, and insulating surfaces.
The electrostatic resistance tester ACL380 is a portable and compact impedance measurement device, produced by ACL in the United States and imported. The parameters of ACL380 are as follows:
Power supply: 9V pp3 alkaline battery
Measurement voltage: Rated 9V
Relative humidity: 0%~90% (no condensation)
Accuracy: ±10%
Repeat error: ±5%
Weight: 170g (60z)
Dimensions: 127×76×26mm
The electrostatic resistance tester ACL380 measures the ground resistance as follows:
Insert the ground wire into the ground (Ground) socket, thus insulating the right detection electrode of the meter (on the same side as the socket). Connect the alligator clip to your ground wire.
Place the meter on the surface to be tested, press and hold the measurement (TEST) button, and the continuously lit LED indicates the magnitude of the ground resistance value. The unit of this measurement value is ohm.
The calibration method for measuring surface impedance of the electrostatic resistance tester ACL380 is as follows:
Calibration cycle
The ACL-380 surface impedance meter needs to be calibrated every twelve months.
Use a decade resistance box and connect the standard measurement resistor across the two parallel electrodes of the ACL-380 meter to check whether the impedance value displayed is correct.
The electrostatic resistance tester ACL380 meter uses 1% ultra-thin film resistors and high-speed amplifier circuits, and its calibration steps are based on the linear circuit technology of the product.
The conversion point of the impedance value is 1/2 level logarithm, that is, 3.16×10n, and the linear value of the conversion point is ±10% of the mean value per unit of each measurement range.
Measuring instruments: decade resistance box, test electrodes
The resistance of the resistance box needs to be 1×103 ohms to 999×106 megohms or 109. CAD technology (cad generated techniques) is used when measuring resistance values greater than 109, because it is difficult to verify resistance values greater than 999×106 using a 9 volt voltage drive.
Connect the two electrodes of the resistance box to the two parallel electrodes of ACL-380, adjust the resistance to 1K, the 103 LED of the meter should light up, and the calibration of other gears is similar. When measuring the impedance conversion point, press the switch while continuously adjusting the impedance value of the impedance bridge, and observe the impedance value when the next gear LED light is always on (the value at this time is the conversion impedance value)
Operation steps and corresponding instructions of electrostatic resistance tester ACL380:
To measure surface impedance, place the meter on the surface to be measured, press and hold the red measurement (TEST) button, and the continuously lit LED indicates the measured surface impedance magnitude.