Replacing System Components; Replacing Passive Components; Replacing The Iq Sensor - Xylem WTW DIQ/S 281 Operating Manual

What to do if ...
Inactive datasets
of IQ sensors
116
8.3

Replacing system components

It is always possible to replace components and assign a substitute
if the software state of the substitute component is as high as or
higher than the software version of the original component.

8.3.1 Replacing passive components

Passive components include all components that the universal transmitter can-
not recognize.
These include:
 DIQ/JB (branching module)
 DIQ/CHV (module for automatic compressed air cleaning)
 Cables (SNCIQ, SACIQ).
WARNING
If the universal transmitter DIQ/S 28X is opened during op-
eration, there is a danger to life due to possible hazard of
electric shock. The Universal Transmitter DIQ/S 28X may
only be opened while the mains voltage is switched off.
Secure the line voltage against being switched on again.
Only ever replace components while the DIQ/S 28X is
switched off. Defective components are removed in the re-
verse order to the installation (see
chapter 3 I

8.3.2 Replacing the IQ sensor

If an IQ sensor is removed from the system, its settings remain stored in the Uni-
versal Transmitter. A dataset contains the following information:
 Serial number of the IQ sensor (and, with it, the type of sensor)
 All sensor settings
 All characteristics of the link with an output.
If no suitable inactive dataset is available, a newly connected IQ sensor is auto-
matically recognized as a new component.
The current calibration data of the IQ sensor is always stored in the
sensor. If an IQ sensor is connected that is ready for operation and
calibrated, this can be used immediately without the need for recal-
ibration.
).
NSTALLATION
DIQ/S 281
ba77244d01 08/2020