User Manual

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Smart Infrastructure Pressure sensors QBE2002-P... CE1N1909en
2021-04-07
Mounting notes
Mounting Instructions are enclosed with the sensor.
The sensors are designed for direct connection to screwed fittings with G½" threads.
Appropriate measures must be taken to ensure a leak-proof fitting.
To provide for test measurements without leakage of the medium, it is strongly
recommended that an appropriate test adapter and shutoff device be fitted.
The tapping point should be at the side, near the bottom of
the pipe. Do not measure the pressure from the top of the
pipe (where it may be affected by airlocks) or the bottom
(where it may be affected by dirt).
Always evacuate the system.
1909Z03
The tapping point should be at the top so that no condensate
reaches the sensor.
1909Z04
If the temperature of medium is lower
than  40 °C or higher than  80 °C,
the sensor should be fitted remotely,
taking care that no condensate can
reach the sensor.
For remote mounting, a fixing bracket
AQB22.1 and mounting kit AQB2001
can be delivered (refer to
"Accessories").
For remote mounting, the sensor can
be operated together with the AQB
pressure mounting kit in ambient
temperatures of up to 70 °C for
medium temperatures of up to
180 °C. Care must be taken in this case to ensure that the cooling efficiency of the
copper pipe is not reduced by additional heat sources or by restrictions to the air
circulation
. The admissible pressure is limited to 93 bar for temperatures >120 °C
.
Pressure measurement
with liquids
Pressure measurement
with condensing gases
Remote mounting
Condensate
or liquid