User Manual HTS801
Humidity and Temperature Sensor for High Humidity and Chemically Polluted Conditions | 30
4.6.2.
Installation of the Probe with Ball Valve Set
The ball valve set allows for installation and removal of the probe without process interruption.
For mounting into a duct, the ball valve shall be installed perpendicular to the flow direction.
NOTICE
The two metal sealing rings (see Fig. 31 Installation of the probe by utilizing the ball valve set) shall be
replaced every time prior to re-installing the probe.
The temperature during probe installation may deviate by max. ±40 °C (±72 °F) from the regular temperature
during normal operation.
Installation of the probe (see Fig. 31)
1.
Install the probe into the ball valve while the ball valve is closed.
2.
Open the ball valve.
3.
Slide the probe through the ball valve to the desired immersion depth. Depending on the process pressure
additional tools may be necessary for pushing the probe into the process. Make sure not to damage the probe
and the cable.
4.
Tighten the lock nut with a torque of 30 Nm.
WARNING
Observe strictly the tightening torque. A torque lower than 30 Nm results a smaller retention force of the
clamping sleeve. This leads the risk of sudden expulsion of the sensing probe due to the pressure. A torque
higher than 30 Nm may lead to permanent deformation of the clamping sleeve and the sensing probe. This
would make the removal and re-installation of the probe difficult or even impossible.
Metal sealing ring
(as a standard contained
with the probe)
1/2".
ball valve
Extension
(is not available for
an NPT thread)
Inside diameter
≥
13.1 mm (0.55")
Metal sealing ring
(as a standard contained
with the ball valve set)
Clamping sleeve
Lock nut
Adapter body
Sealing element 2
Sealing element 1
Fig. 31 Installation of the probe by utilizing the ball valve set
