Chapter 1: Features And Capabilities; Introduction - GE OptiSonde User Manual

Introduction

Features and Capabilities
The GE Sensing OptiSonde™ is a multi-purpose chilled-mirror
hygrometer, suitable for use in a wide variety of applications. The
OptiSonde can function with the GE Sensing one and two-stage
chilled-mirror sensors to provide the following measurement ranges
(depending on the sensor selected):
•
one-stage 45° depression @25°C and 1 ATM
two-stage 65° depression @25°C and 1 ATM
(depending on sensor, as shown in Figure 1-1 below)
•
relative humidity from 0.02% to 100%
•
moisture content from 0.9 ppm
•
temperature from -100° to +100°C (-148°F to +212°F)
Figure 1-1: Mirror Depressions at Various Temperatures for
1111H (a), D2 (b) and 1211H (c) Sensors
October 2007
5
to over 5.8 × 10 ppm
v v
1-1