Installing Directly Into The Process; Installing The Probe In A Sampling System - E+E Elektronik EE355 Manual

Leaks should be avoided, because penetration of humidity from the environment will affect the
measurement.
Upon delivery the sensor is protected by a cap that keeps the dew point sensor dry. The cap should only be
removed immediately before installation into the application.
Pic. 2 Remove protection cap
3.2

Installing directly into the process

If installing directly into the process, a stop valve should be at both sides of the installation point.
This makes it easy to remove the transmitter for maintenance and calibration.
It is not permitted to use a sealing ring with a NPT 1/2" thread. Appropriate PTFE sealing tape or sealant
should be used instead.
Insert the probe into the process and screw it as tight as possible by hand.
If there is a sealing ring, check the correct centering and tighten the screw connection with a
torque of 30 Nm.
OK
Pic. 3 Installing directly into the pipe
3.3

Installing the probe in a sampling system

Sampling is necessary if a direct installation of the probe in the process is not possible or not
required. Reasons may be:
• an excessive process temperature
• protecting the sensor against soiling
• the need to remove the probe without interrupting the process.
To obtain a representative sample of the process gas and to avoid measuring errors, please note
8
ü
û
NOT OK
Manual EE355 Dew point transmitter