Xylem pH/ION 3400i ION SELECTIVE ELECTRODE ANALYZER - Manual (Page 68)

What to do if... pH/ 3400i
68
TP and Temp Error flash
Calibration Std 2 flashes
Calibration Std 3 flashes
6.3 General errors
Display LoBat
Instrument does not
react
to keystroke
Cause Remedy
In calibration:
– Calibration standards do not
have the correct temperature
(max. temperature difference
±
2 °C)
– Temper the calibration
standards
In measurement:
– Test sample does not have the
correct temperature (max.
temperature difference
± 2 °C)
– Temper the test sample
Cause Remedy
– Standard 2 = Standard 1 – Use different calibration
standards
Cause Remedy
Requirement not met:
– Standard 3 > Standard 2, if Std
2 > Std 1 or
– Standard 3 < Standard 2, if Std
2 < Std 1
– Use different standard 3
Cause Remedy
– Batteries almost empty – Exchange the batteries (see
section 5.1 M AINTENANCE )
Cause Remedy
– Operating condition undefined
or EMC load unallowed
– Processor reset:
Switch the instrument on
while pressing the <CAL> key