应用指南

PROBLEM:

Industrial refrigeration systems operate by compressing, condensing, and evaporating halocarbon refrigerants, such as ammonia and Freon?. Rotary screw compressors are one of the most popular types of compressors used in large scale industrial refrigeration. These compressors operate continuously, therefore they need to be lubricated continuously. Oil is mixed with the refrigerant (gas) while it is compressed and then is separated from the coolant (liquid) that is discharged. The ability to accurately monitor pressures in these systems is crucial. As an example, if the refrigeration system failed at a food processing plant the damage would be extremely costly.

SOLUTION:

Four SA200 transducers monitor the compressor's oil input pressure, output pressure, and refrigerant suction pressure. One SA500 measures refrigerant discharge pressure. Output from the SA's are fed into a microprocessor that controls and displays compressor operating information.

ENVIRONMENT:

Industrial refrigeration systems are found in a wide range of environments, such as chemical, food, and pharmaceutical-manufacturing plants. They are also used in air-conditioning systems for malls, airports, and other large buildings.

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