Keithley 8009 Instruction Manual - page 23
2.9
Resistivity measurement procedure
The previously detailed operating information is integrated into the following
procedure to make resistivity measurements.
WARNING
The following procedure uses hazardous voltage that could
cause severe injury or death. Exercise extreme caution
when the voltage source is in operate.
NOTE
To calculate volume resistivity, the average thickness of the
sample must be known. If thickness is not known, use calipers
to measure it. Calipers will provide a precise measurement.
1. Mount the insulator sample in the Model 8009 test fixture. See paragraph 2.3
for detailed information.
2. Close the lid of the test fixture, secure the latch and set the RESISTIVITY
pushbutton switch for the desired test (SURFACE or VOLUME).
3. With power off, connect the test fixture as shown in Figure 2-3 (Model 6517)
or Figure 2-4 (Model 6517B). See sections 2.4 and 2.5 for details.
WARNING
To prevent electrical shock that could cause injury or
death, make sure that the interlock cable is properly con-
nected and the Model 8009 earth ground screw is properly
connected to a safety earth ground.
4. While in standby, set the voltage source to the appropriate test voltage.
Typically, 500V is used as the test voltage for insulators.
5. While still in standby, set the Model 6517 or 6517B to an appropriate mea-
surement range and current compliance limit. Autorange and a high compli-
ance limit will suffice for most tests.
6. Place the voltage source in operate and after an appropriate electrification
period, record the current reading from the display. Typically, an
electrification period of 60 seconds is used.
7. Place the voltage source in standby.
this section provides the
eeded, nomographs (see
also
surface resistivity are
9. Section
are
3
Equations
12
13