5. mV Calibration
The mV section is factory calibrated. There is no user-calibration facility
for this mode.
6. Relative mV Calibration
Select Relative mV mode when measurements relative to a known
standard are required. Calibration of the Relative mV mode is simply a
matter of zeroing the reading when the sensor is in the known standard.
1. Plug the Redox sensor into the pH/mV socket. Temperature
compensation is not applied in Relative mV mode, so the temperature
sensor does not need to be connected.
2. Switch the meter on.
3. Select Relative mV Mode ( →→ F3:Mode →→ F3:Rel mV).
The display should now be showing Relative mV on the top line with
absolute mV or date and time on the bottom line. For example…
1000mVR 25.0
660mV F4:Zeros
Ö
1000mVR 25.0
31/12 12:00:00
Press to alternate between absolute mV or the clock on the bottom
line.
4. Remove the wetting cap from the Redox sensor.
5. Rinse the sensor in distilled water and blot dry.
6. Place the Redox sensor into a sample of the known standard. Ensure
that the platinum tip and reference junction are both covered, as per
the diagram over the page.
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