Vaisala HMP240 - Manual (Page 12)

HMP240-series
User's Guide M210300en
10
a p l u g g e d h o l e f o r r e f e r e n c e
m e a s u r e m e n t s
T - s e n s o r h e a d
( o p t i o n a l )
h u m i d i t y s e n s o r h e a d
d u c t w a l l
s e a l i n g ( s i l i c o n e )
f l a n g e
P T F E s l e e v e
s u p p o r t i n g b a r
Figure 3.2 Installing the sensor heads of the HMP243 in a channel
with the help of flanges and supporting bars
The sensor head can also be installed vertically.
m
h
h
t o b e s e a l e d
( s i l i c o n e )
h u m i d i t y s e n s o r
h e a d
T - s e n s o r h e a d
s t a i n
o r a
P T F E - s l e e v e
a b u s h i n g ( c a b l e - g l a n d )
( s e a l : V i t o n )
( o p t i o n a l )
Figure 3.3 Vertical installation of the HMP243 sensor heads
when a bushing is used, its
size is selected according to
the diameter of the sensor
head; the diameter of the
cable is increased by using
e.g. silicon tape at the bushing
stainless steel
cable tie or a
similar fastener