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- Title
Feed-back Temperature Control System for Microwave Ovens Using a Shielded Thermocouple.
- Authors
RAMASWAMY, H.; VOORT, F.R.; RAGHAVAN, G.S.V.; LIGHTFOOT, D.; TIMBERS, G.
- Abstract
A dynamic system was developed and evaluated to continuously monitor product temperature in ovens using an aluminum shielded thermocouple. The signal was processed by a computer controlled feedback relay to turn the magnetron on or off relative to a preselected setpoint. Results indicated the temperature of water (> 100 mL) could readily be maintained within 1°C of the setpoint. Temperatures for small samples (~5 mL) could also be controlled, however, they required use of an additional microwave heat-sink in the oven cavity to prevent temperature overshooting. The thermocouple based feed-back temperature control system worked well and provided a simple way to control sample temperature in a microwave oven.
- Subjects
TEMPERATURE control; MICROWAVE ovens; THERMOCOUPLES; AUTOMATIC control systems; ELECTRIC equipment
- Publication
Journal of Food Science (Wiley-Blackwell), 1991, Vol 56, Issue 2, p550
- ISSN
0022-1147
- Publication type
Article
- DOI
10.1111/j.1365-2621.1991.tb05321.x