18
PRS-812 Resistance Meter
Automatic Electrification Period timing based on the instrument’s measurement
capabilities and industry standards for measurement of ESD controlled materials.
In AUTOMATIC Modes, the PRS-812 performs the following functions during the
Measurement Test Cycle once the TEST button is pressed:
1.
Resets the RESISTANCE RANGE to minimum, i.e., 0.1
2.
Sets TEST VOLTAGE to <10 volts (millivolts), applies initial voltage to material under test
3.
Resets the ELECTRIFICATION PERIOD timer to 0 seconds, then starts timer
4.
During Measurement Test Cycle:
a.
Adjusts RESISTANCE RANGE in accordance with material resistive characteristics
b.
Automatically adjusts TEST VOLTAGE in accordance with material resistive
characteristics and industry standards
c.
Automatically adjusts ELECTRIFICATION PERIOD in accordance with material
resistive characteristics and industry standards
5.
At completion of Test Cycle, displays and
HOLD
S measurement, test voltage, order of
magnitude (LED), analog scale & multiplier, and electrification time at end of period.
D. Automatic Mode Procedures
1. Attach the desired test leads to the fixture, electrodes or points to be measured
2.
Slide the Battery Buss Cut Off to the ON position
. This connects the 9V batteries to
the instrument’s circuitry.
3.
Press the Red ON/OFF button to power up the instrument. (See Figure 1)
4.
AUTO
is displayed in the LCD. (See Figure 2)
a. The default Mode for the PRS-812 is Automatic Resistance Measurement in
Exponential Format. (1.0EXX). See Figure 2.
b. If measurements are to be displayed in Ohms, press the Gray MODE button
once
.
Note:
Slide the Battery Buss Cut Off to the OFF position when the
instrument is not in use, particularly during storage and transport to
prevent unintentional instrument power up.
Note:
The standard PROSTAT 10 ft. test leads are intended for
measurements up to the10
12
ohm range. This is the maximum
range of the PRS-812 for precision resistance measurements.