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Installation
3.2
Installation conditions
3.2.1 Angle of installation
Sensors are designed for in-line use with the related OUA260 flow assembly. The flow assembly
can be installed either directly in a process line or in a by-pass line. The OUSAF44 sensor cannot
be used without the OUA260.
• Make sure that the sensor and detector housings are horizontal. This will ensure that the
optical window surfaces are in a vertical position which will help to prevent buildup on the
window surfaces.
• Install the sensor upstream of pressure regulators.
• Allow adequate space for the connection of cables at the ends of the lamp and the detector
housing.
• Operating sensors under pressure will help to avoid air or gas bubble evolution.
2
Fig. 1: Sensor installation
A
Preferred
B
Acceptable
C
Avoid
D
Best
10
1
2
2
1
E
A
1
C
E
Never
1
Process flow
2
Process piping
1
B
2
D
1
2
Endress+Hauser
OUSAF44
a0007110
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