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Use
1. Remove the red sensor cover (e) from the measurement electrode.
2. Select the desired voltage range by depressing the “A” button.
Note: If OVERFLOW appears during the measurement select a higher range.
The 3M
™
Charge Analyzer 711 is now ready to measure electrostatic fields on objects such as tapes, films, plastic
objects, etc., indicating in kilovolts per meter.
Demonstration #1 Testing of Low Tribocharging Tapes
With the charge analyzer 711 in the FIELDMETER operating mode, pull the tape off the roll and hold it above
the sensor. The digital display reads the field strength in kV/m. To convert readings of kV/m into volts use the
following formulas:
R/100 x D (cm) or R/39.37 x D (in.) where:
R = Reading indicated on the display and D = Distance between tape and sensor electrode, measured in
centimeters or inches.
Example 1: If reading on the display of the analyzer is 200 KV/m and the distance to the sensor electrode is 5
cm, the voltage on the tape is calculated by: 200/100 x 5 = 10 Kilovolts
Example 2: If reading on the display of the analyzer is 50 KV/m and the distance to the sensor electrode is 3
inches, the voltage on the tape is calculated by: 50/39.37 x 3 = 3.8 Kilovolts
Note: Properly performing ESD control tapes must minimize charging when unwound from the carrier roll.
