Moisture Sensor; Built-In Temperature Sensor - GE HygroPro User Manual

Chapter 4: Specifications

4.4 Moisture Sensor

Sensor Type
•
Thin-film aluminum oxide moisture sensor probe
Calibration
•
Each sensor is individually computer-calibrated against known
moisture concentrations, traceable to
Calibration Interval
•
Sensor recalibration at GE is recommended every six to twelve
months, depending on the application
Flow Rate
•
Gases: Static to 100 m/s linear velocity at a pressure of 1 atm.
•
Liquids: Static to 10 cm/s linear velocity at density of 1 g/cc

4.5 Built-In Temperature Sensor

Type
•
Nonlinear NTC thermistor (resultant temperature linearized by
microprocessor)
Measurement Range
•
–22° to 158°F (–30° to 70°C)
Accuracy
•
±0.9°F (±0.5°C) overall
Response Time (Maximum)
•
One second in well stirred oil, or 10 seconds in still air, for a 63%
step change in increasing or decreasing temperature
Page 46
NIST
HygroPro User's Manual