Knick Portavo 902 PH Instructions page 14

Error Codes and Device Messages
14
"Sensoface" Messages
The "Sensoface" icon provides information on the sensor condition:
Sensoface Meaning
Sensor is okay
Calibrate the sensor soon
Calibrate or replace the sensor
The "neutral" and "sad" Sensoface icons are accompanied by an "INFO ..." message
to give a hint to the cause of deterioration.
Sensoface Message Cause
INFO 1
INFO 3
INFO 5
INFO 6
INFO 7
INFO 8
INFO 9
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Calibration timer
Sensocheck
Zero / Slope
Response time
ISFET: Operating point (asymmetry potential)
ISFET: Leakage current
ORP offset