EB 2183 EN
23
Mounting and start-up
To help align the sensor in the horizontal po-
sition, a marking bead (see Fig. 6) is located
on the sensor. This marking must face up-
ward.
Sensor in horizontal position or with sensor
tip pointing down
· Marked by an embossed
'u' on the screw gland.
To help align the sensor in the horizontal po-
sition, a marking bead (see Fig. 9) is located
on the sensor. This marking must face up-
ward.
The screw gland seals off the sensor.
Î
Weld a welding socket with G ½ female
thread at the place of installation.
Î
Make sure that almost all of the process
medium being monitored flows around
the sensor (of Type 2403). See Fig. 7.
Î
Select the site of installation where over-
heating or considerable idling times can-
not occur.
Capillary tube
Î
Carefully run the capillary tube (8) with-
out bending or twisting it. Make sure that
the capillary tube is not damaged.
Risk of capillary tube damage due to
incorrect handling.
−
Do not shorten the capillary tube.
−
Roll up excess tube to form a ring. The
smallest bending radius is 50 mm.
−
Observe the permissible ambient tem-
perature of max. 50 °C over the entire
length of the capillary tube.
NOTICE
!
'o' marking
'u' marking
U
O
'o' marking
'u' marking
Marking bead
Marking bead
Tip of sensor in horizontal position or
pointing
up
, with intermediate positions
Tip of sensor in horizontal position or
pointing
down
, with intermediate positions
Fig. 9:
Installing the temperature sensor (vapor pressure principle)