Sensor Installation; Model 1111H Sensor; Model D-2 Sensor - GE Optica Operator's Manual

January 2006

Sensor Installation

Model 1111H Sensor

Model D-2 Sensor

2-16
This section provides installation details for the GE Infrastructure
Sensing line of chilled-mirror humidity sensors.
The Model 1111H is an open-type sensor (see Figure 2-15 below).
It can be threaded into standard pipe fittings or mounted in a type
0111D pressure boss, which encloses it and adapts it for ¼-inch
compression fittings. When installing the sensor in the pressure boss,
remove the black aluminum sensor cover.
For maximum thermal conductivity, the base of the Model 0111D
pressure boss should be coated with heat-conducting grease. When so
installed on a surface suitable for dissipating heat, the sensor will
achieve its maximum rated depression. See the Chilled Mirror Sensor
Comparison Chart in Appendix D.
Figure 2-15: Model 111H Sensor
The Model D-2 is a general purpose, two-stage sensor with 65°C
(117°F) of depression capability. It features wetted parts of stainless
steel and glass, for durability in demanding industrial applications.
The Model D-2 can be used as a benchtop sensor, mounted to a heat
sink, or mounted to a cooling fan for maximum operating range.
Advanced features include field-replaceable optics and cooler
assemblies, and auxiliary visible light optics with a viewing window
for inspecting the mirror during operation (see Figure 2-16 below).
For maximum thermal conductivity, the base of the Model D-2 sensor
should be coated with heat-conducting grease. When so installed on a
surface suitable for dissipating heat, the sensor will achieve its
maximum rated depression. See the Chilled Mirror Sensor
Comparison Chart in Appendix D.
Figure 2-16: Model D-2 Sensor
Installation