Wahl DST500-FM User Manual - page 10
DST500-FM USER MANUAL
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2) Use a high accuracy ohmmeter to measure the probes R0 value.
3) Connect the meter to the PC via the 13506 Interface Module.
4) Enter the probes measured R0 value into the R0 box, under the
Module Calibration Data section. Press “Set” to program the
DST500-FM memory with this value.
NOTE: For this method, with fixed probes, the 13500-04 extension
cable is not required, as the probe is removed from the meter.
7.2.4 Method 2
The second method is to use the DST500-FM meter to acquire the
R0 value. For fixed probes, this method is made easier, by using
the 13500-04 extension cable.
1) For fixed probes, disconnect probe from meter, and install the
13500-04, extension cable between the probe connector and the
meter PCB connector. This allows the meter to be placed on a
bench, rather than dangling above the ice bath. Place the probe in
an ice bath. Allow stabilization.
2) Connect the meter to the PC via the 13506 Interface Module.
3) Select and run the “Probe (system) Calibration” program and
follow the on-screen prompts. A running average of R0 is
displayed in the R0 box. Press “Capture R0” to freeze the reading
then press “Yes” to store the measured value into the DST500-FM
memory.
Note: 1) When using this method, the meter may display erratic
readings during the measurement of the probes resistance. This is
normal and does not affect the calibration.
2) During the acquisition process, the software continues to
take samples after the 10
th
sample. This running average allows
the user to verify the probes stability. If this reading continues to
drop, then stability has not yet been achieved.