LaMotte 5 Series TDS Meter - Manual (Page 19)

Temperature Calibration
The conductivity electrode has a built-in temperature sensor for ATC. The
temperature sensor is factory calibrated to the meter. Calibrate the sensor only
if it is suspected that temperature errors that may have occurred over a long
period of time or if the probe is a replacement probe.
1. Make sure that the phono jack (for temperature measurement) is properly
connected to the meter.
2. Turn on the meter and if necessary, press the MODE button to select the
temperature measurement mode.
3. Press CAL button to start temperature calibration process.
4. Dip the probe into a solution with known temperature (for example, a
temperature bath). Allow time for the temperature to stabilize.
5. After the value has stabilized, press question or button and adjust the
value to the solution temperature.
6. Press the ENTER button. The [CO] indicator will appear for 1.5 seconds,
and the reading will stop flashing. The temperature calibration has been
successfully performed. The meter will return to the measurement mode.
NOTE: To exit calibration without confirmation, press CAL button again to
go back to measurement mode.
NOTE: The temperature reading can be offset up to ±5 °C from the original
(default) reading.
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