Xylem ProLab 3000 Manual do Utilizador descarregar pdf (Página 173)

ProLab 3000 What to do if...

173

ba75645e03 12/2012

15 What to do if...

15.1 pH and ORP measurement

Error message Err1

Error message Err2

Error message Err4

Error message, Error

Cause Remedy

pH electrode:

– Measured value outside the

measuring range

– Use a suitable electrode

– Air bubble in front of the dia-

phragm

– Remove air bubble

– Air in the diaphragm – Extract air or moisten junc-

tion

– Cable broken – Replace the electrode

– Gel electrolyte dried out – Replace the electrode

Cause Remedy

– No electrode connected – Connect the electrode

– Setting time during calibration

too long

– Adjust temperature if neces-

sary

– Recalibrate

Cause Remedy

– Temperature not stable during

calibration.

– Adjust temperature if neces-

sary

– Recalibrate

Cause Remedy

pH electrode:

– The values determined for zero

point and slope of the electrode

are outside the allowed limits.

– Recalibrate

– Diaphragm contaminated – Clean diaphragm

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Xylem ProLab 3000 Manual do Utilizador Página 173