Resetting User Calibrated Values; Temperature Calibration; With Temperature Probe - LaMotte pH 5 PLUS Manual

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group. To abort the bu er group selection, press CAL to revert to the pH
measurement mode.
1. Press and hold MODE while switching the meter on using the
ON/OFF key. The display will show bUF blinking.
2. Press the ENTER key to begin the bu er group selection mode.
Use the MODE key to toggle between USA, NIST or Pb as
shown below.
Press the ENTER key to conÞ rm the selection. The meter will
automatically revert to the pH measurement mode. The meter will save
the selected group indeÞ nitely until it is changed.

3.1.4 Resetting User Calibrated Values

The calibrated pH values can be reset to the factory default using the
procedure below. The temperature o set will not be reset using this
procedure. To abort the reset, press CAL to revert to the measurement
mode.
1. Press and hold CAL while switching the meter on using the ON/
OFF key. The DISPLAY will show rSt blinking.
2. Press the ENTER key to conÞ rm. The meter will automatically
clear all stored pH calibrations and revert to the measurement
mode.

3.2 Temperature Calibration

3.2.1 With Temperature Probe

The temperature probe supplied with the meter is factory calibrated. Over
time, the temperature calibration may drift and require recalibration. If
the temperature probe is replaced the meter should be recalibrated.
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