92
APT4000PH
Sensocheck
Continuously monitors the electrodes and wires for short cir-
cuits or open circuits. Critical values make the Sensoface “sad”
and the corresponding icon flashes:
The Sensocheck message is also output as error message Err
33. The alarm contact is active, the red LED is lighted, output
current 1 is set to 22 mA (when configured correspondingly).
Sensocheck can be switched off during configuration (then
Sensoface is also disabled). Exception: After calibration a Smiley
is always displayed for confirmation.
Sensoface
(Sensocheck must have been activated during configuration.)
The little smiley in the display (Sensoface) alerts for electrode
problems (defective sensor, defective cable, maintenance
required). The permitted calibration ranges and the conditions
for a friendly, neutral, or sad Sensoface are summarized in the
following chart. Additional icons refer to the error cause.
Note
The worsening of a Sensoface criterion leads to the devaluation
of the Sensoface indicator (Smiley becomes “sad”). An
improvement of the Sensoface indicator can only take place
after calibration or removal of an electrode defect.
93
Status
Display
Problem
Asymmetry
potential and
slope
Asymmetry potential (zero) and slope of
the electrode are still okay.
However, the electrode should be
replaced soon.
Asymmetry potential (zero point)
and/or slope of the electrode have
reached values which no longer ensure
proper calibration.
Replace the electrode.
Calibration timer
Over 80 % of the calibration interval
has already past.
The calibration interval has been
exceeded.
Electrode
defective
Check the electrode and its connections
(also see error messages
Err 33 and Err 34, Page 87).
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