Mounting
IM/265Gx/Ax-EN-07 265Gx, 265Ax 25
4 Mounting
4.1 General
Before installing the transmitter, check whether the device design meets the requirements of the
measuring point from a measurement technology and safety point of view. This applies in
respect of the:
• Measuring range
• Gauge pressure stability
• Temperature
• Explosion protection
• Operating voltage
The suitability of the materials must be checked as regards their resistance to the media. This
applies in respect of the:
• Seal
• Process connection, separation diaphragm, etc.
In addition, the relevant directives, regulations, standards, and accident prevention regulations
must be observed (e.g., VDE/VDI 3512, DIN 19210, VBG, Elex V, etc.).
Measurement accuracy is largely dependent on correct installation of the pressure transmitter
and, if applicable, the associated impulse line(s). As far as possible, the measuring setup
should be free from critical ambient conditions such as large variations in temperature,
vibrations, or shocks.
IMPORTANT (NOTE)
If unfavorable ambient conditions cannot be avoided for reasons relating to building structure,
measurement technology, or other issues, the measurement quality may be affected. (See
“Specifications”).
If a remote seal with capillary tube is installed on the transmitter, the additional operating
instructions for remote seals and the related data sheets must be observed.
4.2 IP designation
The housings for 265 .. / 267 .. / 269 .. transmitters have been tested for conformity to IP 67
degree of protection in accordance with the IEC 60529 standard.
The first number indicates the type of protection the integrated electronics have against the
ingress of foreign bodies, including dust. "6" means that the housing is dust-proof (i.e., no
ingress of dust). The second number indicates the type of protection the integrated electronics
have against the ingress of water. "6" means that the housing is protected against water;
specifically, powerful jets of water under standardized conditions. "7" means that the housing is
protected against water; specifically, against the effects of temporary immersion in water under
standardized water pressure and temporal conditions.
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