Chapter 3 _________________________________________________________________Mounting
VAISALA _______________________________________________________________________ 15
You can not close the valve if the groove (7) is not in sight. When
installing the sensor head through the Ball Valve Assembly it is not
necessary to empty or shut down the process for installing or
removing the sensor head.
1.
Mount the probe with the ball valve assembly closed; tighten the
clasp nut manually. Add tape or other sealing according to
instructions, see figure on page 14.
2.
Open the ball valve assembly.
3.
Push the probe head through the ball valve assembly into the
process. If the pressure is high, use a manual press handle. Note
that the sensor head must be pushed so deep that the filter is
completely inside the process flow.
4.
Tighten the clasp nut a further 50-60º.
Tightening the Clasp Nut
1.
Adjust the probe to a suitable depth according to the type of
installation.
2.
Tighten the clasp nut first manually.
3.
Mark the fitting body and the clasp nut.
4.
Tighten the nut a further 50 -60º (ca. 1/6 turn) with a wrench. If
you have suitable torque spanner, tighten the nut to max 45 ± 5
Nm (33 ± 4 ft-lbs).
max . 60°
1
2
3
4
0511-109
Tightening the Clasp Nut
The following numbers refer to above:
1 = Probe
2 = Clasp
nut
3 = Pen
