CAL
The CAL key activates calibration mode. Press once and the
display will prompt for the calibration steps.
TEMP SET / DIGIT ADV
The TEMP SET and DIGIT ADV Key are used to set temperature
compensation manually. Press TEMP SET key once will allow
selection of digit to flash momentarily. Press again, the next
digit will flash. Select the digit you wish to change while it
flashes and press the DIGIT ADV key to advance the digit.
Digit will advance at each press of the key. Digit will not
advance by double pressing or press and hold the key.
2.3
ERROR CODES
ER 1
– pH out of range: pH less than 0 or more than 14.00 pH.
mV out of range: mV less than –999 or above +999 mV.
ER 2
– Calibration buffer solution’s temperature below 0°C or
above 60°C.
ER 3
– Test sample solution’s temperature below 0°C or
above 100°C.
ER 4
– Unrecognized OFFSET standard solution or unstable
readings:-
Wrong calibration buffer solution 7.00pH
Bad pH electrode results in erratic readings
Large fluctuation of temperature readings
ER 5
– Unrecognized SLOPE standard solution or unstable
readings:-
Wrong calibration buffer solution 4.01pH
Wrong calibration buffer solution 10.01pH
Bad pH electrode results in erratic readings
Large fluctuation of temperature readings
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