Static Or Dynamic Use; Pressure; Long-Term Storage & Operational Stability; Freedom From Interference - GE Moisture Image Series 1 Startup Manual

Static or Dynamic Use

Pressure

Long-Term Storage &
Operational Stability
Freedom from
Interference

Corrosive Materials

Installation
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The sensor performs equally well in still air or where considerable
flow occurs. Its small size makes it ideal for measuring moisture
conditions within completely sealed containers or dry boxes. It will
also perform well under gas flow conditions as high as 10,000 cm/sec
and liquid flow conditions to 10 cm/sec. Refer to Appendix A,
Application of the Hygrometer, in the Service Manual, for maximum
flow rates in gases and liquids.
The moisture probe always senses the correct water vapor pressure
regardless of the total ambient pressure. The moisture sensor
measures water vapor under vacuum or high pressure conditions from
as little as a few microns Hg to as high as 5000 psi total pressure.
Sensors are not affected by continuous abrupt humidity changes or
damaged by exposure to saturation conditions even when stored.
However, you should store probes in their original shipping
containers in a clean, dry location. If the probe is saturated during
storage, refer to Moisture Condensation on page 1-6 before installing
the probe. For best performance, do not store probes longer than one
to two years from their calibration date.
The sensor is completely unaffected by the presence of a wide variety
of gases or organic liquids. Large concentrations of hydrocarbon
gases, Freon , ozone, carbon dioxide, carbon monoxide, and
hydrogen have no effect on sensor water vapor indications. The
sensor will operate properly in a multitude of gaseous or non-
conductive liquid environments.
Avoid all materials that are corrosive or otherwise damaging to
aluminum or aluminum oxide. These include strongly acidic or basic
materials and primary amines.
April 2004
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