Vaisala HMP260 - Manual (Page 14)

HMP260 SERIES
Operating Manual
HMP260-U017en-1.5
8 1997-11-25
3. Insert the body of the sensor head into the fitting body and screw the
nut manually to the fitting body until the connection feels tight.
4. Mark both the fitting body and the nut hex.
A pen
fitting body
nut
5. Tighten the nut a further 30° (1/12 turn) or if you have a torque span-
ner tighten it with a torque of 80 ±10 Nm.
NOTE
After detachment the nut must be tightened without
increased effort.
30°
6. The tightening cone of the fitting body has to be cleaned and greased
after each tenth detachment. Use high-vacuum grease (Down Corning,
Europe) or a similar grease.
clean cotton stick
tightening cone
sealing
washer
fitting body
The sealing washer has to be changed every time the fitting body is
detached.