Commissioning CM14
22 Endress+Hauser
Parameters Possible settings Description
Hyst. Numerical value
0.0
Configuration of the hysteresis. Not for the
Error function.
Delay time 0 to 60 s
0 s
Configuration of the delay time until the relay
switches. Not for the Error function.
Factory default Resets the device settings to the factory default
settings.
Please confirm no, yes Confirm the reset.
6.5.1 Configuration of the relays
The device has two relays with limit values that are either switched off or can be allocated to
the input signal. The limit value is entered as a numerical value including the decimal
position. The operating mode of the relays as normally open or normally closed is determined
by the wiring of the changeover contact (→ 39). Limit values are always assigned to a
relay. Each relay can be assigned to a channel or a calculated value. In the "Error" mode, the
relay functions as an alarm relay and switches each time a fault or alarm occurs.
The following settings can be made for each of the 2 limit values: assignment, limit,
hysteresis, switching behavior, delay and failure mode.
6.5.2 Installation factor (inductive sensors only)
In confined installation conditions, the conductivity measurement is affected by the pipe walls.
The installation factor compensates for this effect. The transmitter corrects the cell constant
by multiplying by the installation factor.
The value of the installation factor depends on the diameter and the conductivity of the pipe
nozzle as well as the sensor's distance to the wall.
If the wall distance is sufficient (a > 15 mm (0.59 in), DN 80 or higher), the installation factor
f does not have to be taken into account (f = 1.00).
For small distances to the wall, the installation factor increases for electrically insulating pipes
(f > 1) and decreases for electrically conductive pipes (f < 1).
It can be measured using calibration solutions, or determined by approximation from the
following diagram.
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