9. Initialising the MC-81
If the calibration settings of the MC-81 exceed the allowable limits, the unit may
need to be initialised to factory default values. This action may be required if one
or both of the sensors are replaced.
To initialise the MC-81:
1. Switch the MC-81 off, by pressing the key.
2. Press and hold the key while switching the MC-81 the on with the
key.
3. The following messages should be displayed:
Memory then: You MUST then: TPS MC81
Reset ! Re-Cal. Con Sal pH
4. The meter then displays Conductivity and pH. Note that the decimal points
have been replaced with a ∗, to indicate that the unit requires re-calibration.
NOTE: When the MC-81 is initialised, the automatically recognised buffers are
re-set to pH4.00, pH6.88 and pH9.23. See section 8 if you prefer to use
pH7.00 instead of pH6.88 and pH10.00 instead of pH9.23.
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