364Ax-Gx Instruction Manual
14
Mounting the transmitter
Testing Impulse piping
To ensure proper proper pipe laying, the following points must
be observed:
• Keep the impulse piping as short as possible and avoid
sharp bends.
• Route th e impulse piping so that no deposits can
accumulate. Angles of inclination should
not be less than 8 % ascending or descending.
• The impu lse piping should be blown through with
compressed air or better yet flushed
through with the measuring medium before connection.
• Completely bleed the impulse piping if the medium is a fluid.
• Lay the impulse piping so that gas bubbles (when measuring
fluids) or co ndensate (when measuring gases) can flow
back into the process line.
• When measuring steam, make sure that hot steam cannot
flow back int o the pro cess connection (hydraulic seal, e.g., a siphon is filled with water b efore
installation).
• Check the tightness of the connection. or calibration input, and provide space for the housing cover
to be removed for electrical wiring and maintenance
Sealing and screwing in
Connecting pin G ½ B:
For sealing, a flat gasket must be used in accordance with DIN EN 837-1.
NPT threaded connector:
Seal the threads with T
ape
or another approved, resistant sealant.
Reference to atmosphere for 364Gx
For technical reasons it is necessary to apply atmospheric pressure to
the reference side of the pressure sensor.
For this purpose there is a ventilation aperture at the outside of the
sensor which is protected by a PTFE filter.
Make sure that the ventilation opening is not covered
(e.g., do not paint over or wet with silicon oil containing fluids etc.) A
coating results in measuring errors!
NOTE:
In addition, consider the need of a testing or calib ration input,
and provide space for the housing cover to be removed for electrical
wiring and maintenance.
WARNING !
Process leaks may cause harm or result in death. Install and tighten process connectors and all accessories
(including manifolds) before applying pressure.
In case of toxic or other dangerous process fluid, take all precautions as recommended in the relevant
Material Safety Data Sheet when draining or venting.
Use only a 12 mm (15/32 “) hexagonal spanner to tighten the bracket bolts
