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16. Initialising the WP-81T
If the calibration settings of the
WP-81T
exceed the allowable limits, the unit may
need to be initialised to factory default values. This action may be required if the
electrode is replaced.
To initialise the
WP-81T
:
1.
Switch the
WP-81T
off, by pressing the
key.
2.
Press and hold the
key while switching the
WP-81T
back on with the
key.
3.
The following messages should be displayed:
Initialized
then:
WP81Ts V1.0 R1234
MUST ReCalibrate
Cond TDS pH Temp
(The “s” after
WP-81T
is shown when the RS232 serial port option is fitted)
4.
The meter then displays Conductivity, pH and Temperature. Note that the
decimal points have been replaced with a
∗
, to indicate that the unit requires
recalibration.
Note:
When the
WP-81T
is initialised, the manual k factor selection is re-set
to k=10. See section 14 if you wish to select a k=0.1 sensor.
When the
WP-81T
is initialized, the primary pH buffer value is re-set
to pH6.88. See section 15 if you wish to select pH7.00 buffer.
17. Instrument firmware version number.
If you need to phone or fax TPS for any further technical assistance, the version
number of your
WP-81T
firmware may of benefit to us. The version number is
displayed by the
WP-81T
at turn-on.