Model D-2 Sensor; Model 1211H Sensor - GE OptiSonde User Manual

Model D-2 Sensor

Model 1211H Sensor

Installation
The Model D-2 is a general purpose, two-stage sensor with 65°C
(117°F) of depression capability at 25°C @ 1 ATM. 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 2-13 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 2-13: Model D-2 Sensor
The Model 1211H is a two-stage sensor with 65°C (117°F) of
depression capability at 25°C @ 1 ATM. It features wetted parts of
stainless steel and may be used at higher temperature and pressure
than the D2 sensor. The Model 1211H can be used as a benchtop
sensor, mounted to a heat sink. Features include a field-replaceable
mirror, optics and cooler assembly. See the Chilled Mirror Sensor
Comparison Chart in Appendix D.
October 2007
2-15