Endress+Hauser Liquisys M CLM253 - Operating Concept

Operation options Liquisys M CLM223/253
30 Endress+Hauser
6.3.2 Operating concept
Operating modes
Code
Measuring mode:
standard mode of
operation, displaying
current measured values
Setup mode
access to all
configuration
settings
Calibration mode:
execution of
calibration routine
The function groups
are selected with the
PLUS or MINUS key.
A0027244-EN
 18 Description of the possible operating modes
If no key is pressed in the setup mode for approx. 15 min, the device automatically
returns to the measuring mode. Any active hold (hold during setup) is canceled.
Access codes
All device access codes are fixed and cannot be altered. When the device requests the
access code, it distinguishes between different codes.
• CAL key + code 22: access to Calibration and Offset menu
• ENTER key + code 22: access to the menus for the parameters which make
configuration and user-specific settings possible
• PLUS + ENTER keys simultaneously (min. 3 s): lock the keyboard
• CAL + MINUS keys simultaneously (min. 3 s): unlock the keyboard
• CAL or ENTER key + any code: access to read mode, i.e. all the settings can be read but
not modified.
The device continues measuring in the read mode. It does not shift to the "Hold" status.
The current output and the controllers remain active.