Vaisala HMP230 - Manual (Page 21)

HMP230 SERIES
M210225en-B User's Guide
15
process pipe
welded sleeve
(G1/2)
Non leaking screw
(screw A)
closing valve
(ball valve)
sealing
capped nut
DIN 917-M22x1.5
when the probe is pulled
out for maintenance, cap
the hole with a capped nut;
this way, the process can be
open although the probe is
not in place
Figure 14 Installing the sensor head directly on the process wall