Description : 

Siphon tubes protect the pressure gauges
against excessive heating due to the
temperature of the measuring fluid.
The gauge is mounted directly on the
siphon tube or connected in serie with
a shut-off device.
Condensate is formed in the bent part and
this prevents excessive heating. We recommend
to fill the tube with liquid before
starting. At extremely high temperatures,
a sufficiently long capillary should be used.