Specifications

Transmitter Multiparameter M400 80
© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400
Printed in Switzerland 52 121 378
17.3 Error messages
ISM
ChX Disconnected
Chx Change Sensor
Chx Maint Required
Chx Cal Required
Chx CIP Counter Expired
Chx SIP Counter Expired
Chx AutCl Count Expired
pH – Warnings
Warning pH slope > 102%
Warning pH Slope < 90%
Warning pH Zero >7.5 pH
Warning pH Zero < 6.5 pH
Warning pHGls change < 0.3
Warning pHGls change > 3
Warning pHRef change < 0.3
Warning pHRef change > 3
pH – Alarms
Watchdog time-out
Error pH Slope > 103%
Error pH Slope < 80%
Error pH Zero > 8.0 pH
Error pH Zero < 6.0 pH
Error pH Ref Res >150 KΩ
Error pH Ref Res < 2000 Ω
Error pH Gls Res > 2000 MΩ
Error pH Gls Res < 5 M Ω
O
2
high – Warnings
Warning DO Slope < –90 nA
Warning DO Slope > –35 nA
Warning DO ZeroPt > 0.3 nA
Warning DO ZeroPt < –0.3 nA
O
2
high – Alarms
Watchdog time-out
Error DO Slope < –110 nA
Error DO Slope > –30 nA
Error DO ZeroPt > 0.6 nA
Error DO ZeroPt < –0.6 nA
O
2
low – Warnings
Warnings
Warning DO Slope < –460 nA
Warning DO Slope > –250 nA
Warning DO ZeroPt > 0.5 nA
Warning DO ZeroPt < -0.5 nA
O
2
low – Alarms
Watchdog time-out
Error Install O2 Jumper
Error DO Slope < –525 nA
Error DO Slope > –220 nA
Error DO ZeroPt > 1.0 nA
Error DO ZeroPt < –1.0 nA
Conductivity – Alarms
Alarms
Watchdog time-out
Cond Cell open
Cond Cell shorted