Sensor Information - GE OptiSonde User Manual

Sensor Information

Installation
GE Sensing produces a variety of sensors compatible with the
OptiSonde, ranging from one to two stages of thermoelectric cooling.
A comparison chart listing specifications of each sensor appears in
Appendix D. The following sections provide information on
installing the following GE Sensing dew point sensors:
•
Model 1111H — Single-stage sensor with 1" M-NDT
•
Model 1111H-GE — Dew point single-stage sensor with flange
•
Model 1211H — Two-stage sensor; for high pressure and temp.
•
Model D-2 — Two-stage sensor
When selecting a location for installing a sensor, consider the
following criteria:
•
Locate the sensor as close as is practical to the source of the gas to
be measured, to keep the sampling lines as short as possible. This
minimizes the system response time and reduces the error rate at
low frost points due to sample line outgassing.
The OptiSonde electronics and sensors are for General
Purpose Locations only. They are not for use in hazardous
(classified) locations. Sample air/gas shall be non-
•
Choose a sensor location that provides access to the dewpoint
sample cavity cover, to facilitate periodic mirror cleaning.
Never place the sensor in a location where temperatures
rise above the maximum rated temperature for the device.
See Appendix D for complete sensor specifications.
Caution!
combustible only.
Caution!
October 2007
2-11