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The dew point humidity sensor SHS-A5 is a combined sensor for detecting the onset of condensation with additional interdiital structure (conductance sensor) for detection of liquid water or condensation. The exponentially rising resistive characteristics in the upper humidity region facilitates simple signal processing and a stable switching behavior on the dew formation threshold.

The ceramic substrate can become a thermal contact on the reverse side to sense surface humidity. Through SIL-contacts, the component can be directly mounted on the printed circuit board. Other models, for example, with connection leads and plug are also available on request.

Typical applications include:

• Building instrumention such as cool ceiling controller and air conditioning equipment
• Moisture protection in switcher panels and electrical equipment
• Monitoring of flat roofs
• Condensation detection in outside walls
• Ventilation control in rest rooms
• Leakage monitoring for waterproof housings

The application range is from 0 to 100% RH with a working temperature range of 0-60C. Other versions are also available. These sensors are sold exclusively in the United States by Servoflo Corporation of Lexington, Massachusetts.