Hach-Lange SI794 C User Manual - Manual (Page 92)

92
Sensocheck
Continuously monitors the sensor and its wiring.
Sensocheck can be switched off.
Critical values make the Sensoface “sad” and the
corresponding icon blinks:
The Sensocheck message is also output as error message Err 33.
The alarm contact is active, the red LED is lit, output current 1 is
set to 22 mA (when configured correspondingly). Sensocheck can
be switched off during configuration (then Sensoface is also dis-
abled). Exception: After a calibration a smiley is always displayed
for confirmation.
Sensoface
The little smiley in the display (Sensoface) provides information
about the sensor condition (defects, maintenance required, cable
capacitance too high).
It alerts to significant sensor polarization or excessive cable
capacitance e.g. caused by an unsuitable cable or a cable that is
too long. 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”). To reset the
Sensoface indicator, the defect must be remedied and the trans-
mitter be calibrated.