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It is recommended to perform the assembly / installation without an existing explosive atmosphere (e.g. ventilated
room).
8.2 Requirements for the installation site
Check the suitability of the device for the process media to be measured,
Design of the measuring range to the requirements of the measurement,
A gauge support must be installed if the measuring line does not have sufficient load-bearing capacity,
Units with blow out device require a minimum distance to the rear of min. 20 mm,
The installation location must be chosen in such a way that workplaces of the operating personnel are not located
at the rear of the measuring device,
Protection against pressure surges by means of suitable pressure snubbers,
Protection against mechanical vibration, e.g. by means of a flexible capillary line.
The following limits must not be exceeded under any circumstances:
Frequency of mechanical vibration: max. 150 Hz
Acceleration: max. 0.5 g (approx. 5 m/s
2
)
8.3 Process connection
The process connections comply with the general technical regulations for pressure gauges. Thread types and materials
of the process connections may vary depending on the application.
Assembly of the device only by authorized and qualified personnel.
The device must be integrated into the equipotential bonding of the process installation (e.g. by using an electrically
conductive seal).
The pressure pipe must be laid inclined in such a way that, for example, for measurements of fluids no air bubbles
can form, and for measurements of gases no water pockets. If the necessary incline is not achieved, then at suitable
points water separators or air separators must be installed.
The pressure measuring line should be kept as short as possible and laid without sharp bends.
In the case of liquid measuring media, the pressure line must be vented, as trapped air bubbles could lead to a
measuring error.
It must be ensured that the blow-out back cover is not blocked and that a sufficiently large distance to the nearest
stationary object is guaranteed.
If water is used as the measurement medium, the device must be frost-protected.
The unit is adjusted at the factory for vertical mounting position.
Only use the appropriate open-end wrench to tighten the sealant on the intended wrench flat.
The tightening torque depends on the sealant used.
8.4 Electrical connection
Take note of the electrical data in the EU design type test certification and the locally-applicable regulations
and guidelines for installing and operating electrical plant in explosion risk areas (e.g. EN 60079-14,
EN 60079-17 etc.).
Connection to be undertaken by authorized and qualified specialist staff only.
The electrical connection of the device is to be undertaken in accordance with the relevant regulations of the VDE
and the regulations supplied by the local utilities company.
Disconnect the plant from the mains supply before wiring electrical connections.
Install appropriate fuses upstream.
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