Aplisens PRE-28 Ex Safety Benutzerhandbuch - Seite 13
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Low ambient temperature for pressure transmitters is
Low ambient temperature for differential pressure transmitters is
Low ambient temperature for special versions transmitters is
Special conditions for safe use
̶
Transmitters with LiYwC11Y (1) 4x0,35c type cable (manufactured by Technokabel)
(SGM electric connection), used at an ambient temperature of Ta = 65°C and process
temperature 105°C, must be installed in a horizontal position in such a way that the
temperature above the process connection does not exceed 100°C.
̶
If transmitters for Group III contain:
a) the nameplate made of plastic,
b) diaphragm seals covered by PTFE,
they should be installed in a way that prevents electrostatic charging, according to
the instruction manual.
̶ If the elements made of titanium are used in the construction of the device, during
installation and operation of the transmitter these elements should be protected against
direct access.
̶ External parts made of plastic should be cleaned with a damp cloth, with the addition of
antistatic fluids.
̶
The diaphragm should not be subject on damage during installation and exploitation of
the transmitter. The transmitter diaphragm is made of stainless steel or Hastelloy alloy
and must not be exposed to medium that could cause its damage.
9.
ELECTRICAL CONNECTIONS
All connection and installation activities should be performed when the power
supply and input signal are disconnected.
It is recommended to transmit signal lines through a shielded cable. Signal cables should
not be led with interfering cables e.g. near large load points.
Equipment operating together with transmitters should be resistant to electromagnetic
interference from the transmission line in compliance with electromagnetic compatibility
requirements.
It is also beneficial to use noise filters on the primary side of transformers, power supplies
for transmitters and apparatus operating with them
9.1.
How to connect different types of transmitters
PCE-28, PRE-28, PCE-28 Ex Safety, PRE-28 Ex Safety connection
„FL(...)" connection
Red wire
Black wire
04.A.004
(+)
(-)
„SGM(...)" connection
Red wire (+)
Black wire
(-)
Green wire (cable shield)
IO.PCE-28....PC-29.Exd
-40ºC,
-25ºC
-50ºC
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