VEGA VEGAFLEX 66 (-200…+400°C) 4 … 20 mA_HART two-wire User Manual
Page 16
E
xcessive system vibration or shocks, e.g. caused by agitators or
turbulence in the vessel (e.g. from fluidisation) can cause the coax
probe of VEGAFLEX 66 to vibrate in resonance. Should a coax probe
of more than 1 m (3.281 in) length should be used, you can provide a
suitable support or guy directly above the end of the probe to stabilise
it.
I
f there is a danger of the probe touching the vessel wall during
operation due to product movements or agitators etc., the measuring
probe should be securely fixed.
I
n the gravity weight there is a thread (M12), e.g. for a ring bolt
(
optional) - (article no. 2.27424).
M
ake sure that the probe cable is not completely taut. Avoid tensile
loads on the cable.
A
void undefined cable-vessel connections, i.e. the connection must be
either grounded reliably or isolated reliably. Any deviation from this
requirement can lead to measurement errors.
VEGAFLEX
66
should be integrated in the vessel insulation. This
prevents the electronics from strong heating or cooling by temperature
radiation.
M
ake sure that with heated or cooled vessels the permissible ambient
temperature on the housing is not exceeded. The permissible ambient
temperature is stated in chapter "Technical data" under "Ambient
conditions".
Fixing
Temperature insulation
16
VEGAFLEX
66 • 4 … 20
mA/HART two-wire
4 M
ounting
34173
-EN
-100427