TV/SC-IR Instrument & Analyzer Enclosure Cooling Control Valve

Operation

The reverse-acting TV/SC-IR (Tube Valve/Instrument Enclosure) is Self-Actuated Temperature Regulators designed to open on rising temperature to regulate the flow of cooling media to an enclosure. The thermal wax actuator end of the valve is installed into the wall of the instrument enclosure to continuously senses the ambient temperature within the enclosure.

When the temperature rises above the valve’s set-point it will automatically modulate open to allow the injection of the cooling media. The valve will modulate closed again once the ambient temperature is within 10°F (5.6°C) of the open set-point (Example: a 75°F valve would open at 75°F to allow the insertion of the cooling media and close at 65°F, keeping the enclosure interior between 75 – 65°F).

Typical Applications

The TV/SC-IR Self-Actuated Temperature Regulators can be used to keep an enclosure cool via a vortex cooler to protect expensive analyzers and instrumentation from overheating. For example, a 90°F valve would open at 90°F to allow the compressed air into the vortex cooler valve, which then spins the air at high velocity creating a hot and cold fraction of air. As cold air fills the enclosure, the hot air will be expelled outside, maintaining a desired temperature with the enclosure.

For heating applications, the TV/SC-I direct-acting valve opens on falling temperatures to regulate the flow of steam into the enclosure to maintain a desired temperature within the enclosure and to protect instrumentation from freeze damage.

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