
Transmitter M400/2(X)H, M400G/2XH 88
© 03 / 2014 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400/2(X)H, M400G/2XH
Printed in Switzerland 30 031 683
14.2 Cond (resistive) Error messages /
Warning- and Alarm list for ISM sensors
Alarms Description
Watchdog time-out* SW/System fault
Dry Cond sensor* Cell running dry (no measurement solution)
Cell deviation* Multiplier out of tolerance** (depends on sensor model).
* According to the parameterization of the transmitter (see chapter 8.5.1 “Alarm”;
PATH: Menu/Configure/Alarm/Clean/Setup Alarm)
** For further information refer to the sensor documentation
14.3 pH Error messages / Warning- and Alarm list
14.3.1 pH sensors except dual membrane pH electrodes
Warnings Description
Warning pH slope >102% Slope too big
Warning pH Slope < 90% Slope too small
Warning pH Zero > 7.5 pH Zero offset too big
Warning pH Zero < 6.5 pH Zero offset too small
Warning pHGls change < 0.3** Glass electrode resistance changed by more than factor 0.3
Warning pHGls change > 3** Glass electrode resistance changed by more than factor 3
Warning pHRef change < 0.3**
Reference electrode resistance changed by more
than factor 0.3
Warning pHRef change > 3** Reference electrode resistance changed by more than factor 3
Alarms Description
Watchdog time-out* SW/System fault
Error pH Slope >103% Slope too big
Error pH Slope < 80% Slope too small
Error pH Zero > 8.0 pH Zero offset too big
Error pH Zero < 6.0 pH Zero offset too small
Error pH Ref Res >150 KΩ** Reference electrode resistance too big (break)
Error pH Ref Res < 2000 Ω** Reference electrode resistance too small (short)
Error pH Gls Res > 2000 MΩ** Glass electrode resistance too big (break)
Error pH Gls Res < 5 MΩ** Glass electrode resistance too small (short)
* ISM sensors only
** According to the parameterization of the transmitter (see chapter 8.5.1 “Alarm”;
PATH: Menu/Configure/Alarm/Clean/Setup Alarm)
Komentarze do niniejszej Instrukcji