MIL-DTL-44031E
4.5.4.4.1 Allow test equipment one-hour warm-up time. Adjust voltage source for a charging
voltage of 5000 volts. Mount a 3-inch by 5-inch aluminum calibration plate across the electrodes
in the faraday cage such that it is centered in front of the voltage sensor opening. Apply a charge
of 5000 volts, and calibrate the voltage meter designated to indicate detected voltage on the
sample equal to 5000 volts. Remove the aluminum plate.
4.5.4.4.2 Mount a specimen tautly across the electrodes, centering it over the sensor opening.
The surface of test specimen (back or front) shall face the sensor. The CUT-OFF must be set to
10 percent. With the high voltage off, depress the CHG button to measure initial charge on the
test specimen. If it is not reading zero, it may not be antistatic. A staticmaster shall be used on
the specimen before the test to remove residual charge of 500 or less.
4.5.4.4.3 Apply 5000 volts to the electrodes for a period of 20 seconds. To do this, depress
the + button on the right (the reading on the CHARGING VOLTAGE meter must read 5000
volts); then depress the CHG button. Wait 20 seconds; record the highest reading on the
SAMPLE CHARGE meter. Then depress the TEST button and from the readout under DECAY
TIME-SEC, record how long it takes for the charge to decay from the maximum voltage to 10
percent of the maximum level. Depress the ZERO/STBY button after the test. The high voltage
(5000 volts) shall be turned off and the specimen immediately grounded.
4.5.4.4.4 If the maximum voltage level on the SAMPLE CHARGE meter did not reach at
least 4000 volts during the 20-second charging period, the specimen shall be recorded as non-
passing and the reason noted.
4.5.4.4.5 If the DECAY TIME-SEC is less than 0.5 second, the specimen is acceptable;
otherwise it is not and the reason for failure shall be noted.
4.5.4.4.6 After testing the other side of the same specimen, remove it and repeat 4.5.4.4.2
through 4.5.4.4.5 for the front and back sides of the other specimens of the test fabric.
4.5.4.4.7 Recalibrate periodically, at the minimum between each set of six specimens.
4.5.4.5 Report and evaluation.
4.5.4.5.1 The test method used and any alterations to the method shall be reported.
4.5.4.5.2 Test conditions, including relative humidity, room temperature and conditioning
time, shall be stated.
4.5.4.5.3 Equipment names, model numbers and manufacturers shall be listed (see.6.9).
Special modifications to equipment shall be described. A description of any in-house built
equipment shall be included.
4.5.4.5.4 Identification of materials tested, including name, composition, weave,
printed/dyed, finishes, manufacturer and other pertinent information shall be included.
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