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Home arrow Resources arrow ASHRAE Glossary
Glossary

 

The terms and definitions included in this glossary were taken from "ASHRAE Terminology of Heating, Ventilation, Air Conditioning & Refrigeration".
To access the complete glossary please visit ASHRAE's Bookstore.


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watch dog timer

 

1. electronic internal timer which will generate a priority interrupt unless periodically recycled by a computer. It is used to detect program stall or hardware failure conditions.

2. time delay circuit which is closed when a computer system operates normally; when the computer system goes off‑line, the circuit will begin a time delay and then open the circuit of which it is a part.

 

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