Knick Stratos Pro A401B PH, User Manual

Page: 43 / 196

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HOLD Mode
The HOLD mode is a safety state during configuration and calibration.
Output current is frozen (LAST) or set to a fixed value (FIX).
The HOLD mode is indicated by orange display backlighting.
Terminating the HOLD mode
The HOLD mode is ended by switching to measuring mode (hold
meas key depressed). The display reads “Good Bye“, after that, the
HOLD mode is exited.
When the calibration mode is exited, a confirmation prompt ensures
that the installation is ready for operation (e.g.: sensor reinstalled,
located in process).
HOLD mode, display icon:
HOLD active
21
4
HOLD active
Output current
[mA]
Output signal for HOLD
FIX setting = 21.0 mA
Output signal for HOLD
LAST setting
Output signal during HOLD:
Output signal response
• LAST: The output current is frozen at its last value. Recommended
for short configuration procedures. The process should not change
decisively during configuration. Changes are not noticed with this
setting!
• FIX: The output current is set to a value that is noticeably different
from the process value to signal the control system that the device
is being worked at.