Mounting; Application Conditions; Instructions For Handling; Mounting 4.1 Application Conditions - Vega VEGADIF 65 Operating Instructions Manual

4 Mounting

Suitability for process
conditions
Consideration of the
ambient temperature
8
4 Mounting

4.1 Application conditions

Before mounting, setup and operation, take note that the isolating
system as well as the pressure transmitter were selected according to
measuring range, version and material. The load limits must be
maintained in order to guarantee accuracy and operational life span.
Caution:
In dangerous substances such as e.g. oxygen, acetylene, combustible
or toxic products as well as in refrigerating plants, compressors, etc.,
the pertinent instructions must be observed in addition to the general
regulations.
The differential pressure transmitter must be mounted in such a way
that the permissible ambient and product temperature limits, also
under consideration of the influence of convection and heat radiation,
are neither underrun nor exceeded.
When selecting the pressure transmitter, the pressure temperature
resistance of the fitting and flange components must be considered
through the selection of the material and pressure stage. The pressure
stage stated on the isolating diaphragm applies to ambient temper-
atures. In case of higher temperatures, the max. permissible pressure
must be taken from the standard indicated on the isolating diaphragm.
To keep the temperature influence as low as possible, configuration or
mounting must be carried out in such a way that the plus and minus
sides are symmetrical with respect to ambient temperatures.

4.2 Instructions for handling

The instruments must be protected against soiling and strong
l
fluctuations of the ambient temperature
Leave the measuring system in the packaging until mounting to
l
protect it against mechanical damages
When removing the packaging and when mounting, take special
l
care to avoid damage and mechanical deformation of the
diaphragm
Do not carry the pressure transmitter by holding the capillary line
l
Do not bent the capillary lines. Kinks can cause leakage and lead
l
to an increase in response time
Never loosen sealed screws on the isolating diaphragm or the
l
pressure transmitter
Do not damage the isolating diaphragm: scratches on the isolating
l
diaphragm (e.g. from sharp subjects) are the main areas where
corrosion can occur
Isolating diaphragm CSS • for VEGADIF 65