Knick Stratos Pro A401B PH, User Manual

Page: 69 / 196

69
Configuration
Adaptive Maintenance Timer
(TTM, Time To Maintenance)
By issuing a Sensoface message, the adaptive maintenance timer
reminds you to service the sensor. After expiration of the interval,
Sensoface is getting “sad”. Pressing the info key shows the text
“OUT OF MAINTENANCE CLEAN SENSOR” which reminds you
that a sensor maintenance is due. The TTM interval is either read
automatically from the sensor settings or can be specified manually
(max. 9999 days).
Stressing influences (temperature, measurement in extreme ranges)
shorten the timer interval.
You can configure the current outputs so that a Sensoface message
generates a 22-mA error signal, see page 81.
Menu item Action Choices
Adaptive mainte-
nance timer (TTM)
Select using

keys:
AUTO:
The interval stored in
the ISM sensor is used
(default)
MAN:
The interval is specified
manually (0 ... 9999 days)
Press enter to confirm.
The adaptive maintenance timer can be reset in the SERVICE /
SENSOR / TTM menu. Here, the interval is reset to its initial value.
To do so, select
“TTM RESET = YES“
and confirm by pressing
enter.