AUX E&H Series Betriebsanleitung PDF herunterladen (Seite 67)

Error

no.

Display Measures

Contakt Error current

Automatic start

of cleaning

Fact User Fact User Fact User

E154

Below lower alarm

threshold for period

exceeding alarm delay

If necessary perform manual reference

measurement. Repair sensor and

recalibrate.

yes no no

E155

Above upper alarm

threshold for period

exceeding alarm delay

yes no no

E156

Actual value undershoots

alarm threshold for longer

than the set permissible

maximum period

yes no no

E157

Actual value exceeds

alarm threshold for longer

than the set permissible

maximum period

yes no no

E162

Dosage stop

Check settings in CURRENT INPUT or

CHECK function group.

yes no no

E164

Dynamic range of pH

convertor exceeded

Check cable and sensor. yes no -

E165

Dynamic range of

reference convertor

exceeded

Check cable and sensor. yes no -

E168

Warning: IsFET leakage

current > 200 nA

Check IsFET for abrasion and tightness,

replace soon.

no no no

E171

Flow in main stream loo

low or zero

Restore flow. yes no no

E172

Switch-off limit for current

iput exceeded

Check process variables at sending

measuring instrument.

yes no no

E173

Current input < 4 mA

Check process variables at sending

measuring instrument.

Change range assignment if required.

yes no no

E174

Current input > 20 mA

Check process variables at sending

measuring instrument.

Change range assignment if required.

yes no no

PM253E07.CHP

Liquisys M CPM 223 / 253 Maintenance and troubleshooting

Endress+Hauser 65

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