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▶ Make sure that you do not remove the packaging and pro-
tection caps from the device until you are just about to in-
stall it, so that you do not damage the diaphragm or the
threads.
▶ Keep the protection caps. Dispose of packaging properly.
10.2 Installing outdoors and in damp conditions
1. Electrically connect the device as soon as it is installed, or
take measures to prevent the ingress of moisture, e.g. us-
ing a suitable protection cap. (The stated protection class
applies to the device once it is connected.)
2. When installing the device, position it such that splashed
water and condensation can drain away. Liquid must not
be allowed to accumulate on sealing surfaces.
3. For devices with a cable outlet, the outgoing cable must
be routed downwards. If the cable has to be routed up-
wards, this must be implemented in an elbow that is direc-
ted downwards.
4. Install the device such that it is protected from direct sun-
light. In the worst case scenario, exposure to direct sun-
light can result in the permissible operating temperature
being exceeded. This must be completely avoided when
using the device in Ex areas.
5. Install devices with a gauge reference in the housing
(small hole next to the electrical connection) such that the
gauge reference needed for the measurement is protected
from dirt and moisture. If the measuring transducer is ex-
posed to liquid, the gauge reference will become blocked,
preventing the air pressure from equalizing. It is not pos-
sible to measure accurately in this situation, and the
measuring transducer may be damaged as a result.
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NOTICE
10.3 Installation steps for connections in accordance
with DIN 3852
▶ Do not use any additional sealing material such as
oakum, hemp or Teflon tape.
The O-ring must sit in the groove provided.
The O-ring is not damaged.
The sealing surface of the part that accommodates it must be
free of defects. (R
3.2)
Z
1. Screw the device onto the mounting thread by hand.
2. Devices with a knurled collar must be screwed on tightly
by hand
3. Devices with a wrench surface must be tightened with a
suitable open-end wrench.
Steel wrench surface:
G1/4": Approx. 5 Nm
G1/2": Approx. 10 Nm
Plastic wrench surface:
Max. 3 Nm
10.4 Installation steps for connections in accordance
with EN 837
A suitable seal that is compatible with the measurement me-
dium and the temperature that is to be measured must be
provided (e.g. a copper gasket).
The sealing surface of the part that accommodates it must be
flawless (R
6.3).
Z
1. Screw the device onto the mounting thread by hand.
2. Then tighten it with the open-end wrench:
G1/4": Approx. 20 Nm
G1/2": Approx. 50 Nm
▶ Observe the permissible pressures in accordance with EN
837
G1/4" EN 837
G1/2" EN 837
G1/4" EN 837
G1/2" EN 837
13 / 28
10 Installation in piping
NOTICE
NOTICE
P
≤ 600 bar
The counterpart
N
must be made from
P
≤ 1000 bar
N
steel in accordance
with DIN 17440
with a strength of
R
≥ 190 N/mm
p0.2
P
> 600 bar,
The counterpart
N
P
≤ 1000 bar
must be made from
N
steel in accordance
P
> 1000 bar,
N
with DIN 17440
P
≤ 1600 bar
N
with a strength of
R
≥ 260 N/mm
p0.2
2
.
2
.
GEMÜ 3240
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