Vaisala HMP260 - Manual (Page 13)

HMP260 SERIES
HMP260-U017en-1.5 Operating Manual
1997-11-25 7
NOTE
When using the support bar the lead-through piece and
the space between the duct wall and the flange must be
sealed e.g. with silicon. The sealings must fulfil EEx
requirements.
The sensor head can also be installed vertically.
when a bushing is used, its size is
selected according to the diameter
of the sensor head; the diameter
of the cable increased by using
e.g. tape at the bushing
to be sealed
(loop type)
clamp
mounting the
sensor head
on a support
HAZARDOUS
AREA
SAFE AREA
Fig. 3.3 Vertical installation of the HMP263 sensor head
3.2.2. HMP264 transmitter
The HMP264 is supplied with a nut, a fitting body and a sealing washer.
During handling the fitting body and the nut should remain in place on the
body of the sensor head to prevent damage to the highly polished surface.
To achieve a leak-tight assembly:
1. Remove the fitting body from the nut and the sensor head.
2. Fasten the fitting body to the chamber wall. Tighten the fitting body
into the threaded sleeve with a torque spanner. The tightening torque
is 150 ±10 Nm.
tightening cone
sealing washer
fitting body
nut
SAFE AREA
HAZARDOUS AREA