Instructions for Use SS 20.200
Page 4
3 Mounting instructions
The
SS 20.200
is a high-precision and sensitive measuring device. Ac-
cordingly, the mechanical stress on the probe head must be minimised in
all mounting steps.
Avoid mechanical stress of the sensor tip as much as possible,
since otherwise irreversible damage can occur.
Mounting position
In order to achieve maximum measuring sensitivity, the sensor head
should be mounted pointing upwards. A sensor head pointing down-
wards must be avoided, since this will increase the measuring range limit
(nominal value 0.06 m/s).
In order to obtain good measurement results, the flow measuring sleeve
must always be in the centre of the flow duct.
The sensor head must immerse completely (that is, including
the temperature measuring sleeve) into the air flow. If this is not
the case, the measured value can be completely wrong.
The sensor should not be mounted in the proximity of heat sources,
since this may result in measurement errors. When used in ventilation
pipes equipped with heat exchangers, the sensor should always be
mounted upstream of the heat exchanger.
Wall mounting
First the protective cover must be pulled off the sensor head. Then the
sensor together with the threaded piece (M 18 x 1 fine pitch thread) is
screwed in the appropriate threaded bore of the duct wall. Set the de-
sired position and secure it with a counter nut.
Alternatively
SCHMIDT Technology
offers auxiliary installation equip-
ment. Please refer to following URLs for details:
www.schmidt-sensors.com
or
www.schmidttechnology.com
This also includes through-bolt joints that are suitable for use in media
with overpressure
2
in which the following has to be considered:
Mounting and dismounting of the sensor can be carried out only
as long as the system is in
depressurized state
.
Only using proper pressure-tight seals (e. g. Teflon tape).
Appropriate safety precautions are taken to avoid unintended
discarding of the sensor due to overpressure.
2
Pressure-tight, including pressure security kit (material no. 524891 and 524919)
!
!
!