Prostat PRF-922B, User Manual

Page: 9 / 20

9
Rev. 2 / 3-18-2019
PRF-922B Miniature Two-Point Probe Set
IMPORTANT NOTE
Adjust probe pressure to insure that the electrode springs are controlling the probe’s con-
nec on with the material’s surface and that the springs are not fully compressed against
their stops. This will insure reproducible measurements.
4. Select appropriate instrument test voltage and ini ate resistance measurement. ESD Associa-
on S11.11 test voltage guidelines for measuring packaging materials are as follows:
a. For material resistance measurements of less than 1.0x10
4
ohms, use <10 volts.
b. For measurements of 1.0x10
4
to <1.0x10
6
ohms, use 10 volts.
c. For measurements greater than 1.0x10
6
ohms, use 100 volts
NOTE: For op mal performance and accuracy, use the Prostat PRS-801 Resistance System
in its AUTOMATIC Mode (either Default Mode 1 [Ohms], or Mode 2 [Exponen al 1.0EXX/
Ohms] display). AUTOMATIC Mode will control test voltage, resistance range adjustment
and electri
fi ca on period automa cally.
Figure 7: Measurement Illustra Ɵ ons Using the Prostat PRF-922B Fixture