Imperial-Thermal 14571/4501 Vacuum Gauge

Posted on: Thu, 2012-09-06 22:26   By: Imperial

14571 & 4501 Thermistor Vacuum Gauges

For proper evacuation and dehydration of refrigeration and air-conditioning systems, an electronic vacuum gauge is an indispensable companion to a vacuum pump. Significant dehydration does not occur until a vacuum of 1000 microns or greater has been achieved. Use of electronic vacuum gauges is the only way to determine when dehydration is occurring and when it is complete.

Imperial-Thermal Engineering Vak-Checks are precision thermistor vacuum gauges designed especially for refrigeration and air-conditioning service. They automatically compensate for changes in ambient temperature and permit continuous monitoring during evacuation. These instruments are compact, lightweight, easy to use, and read directly in microns on a large easy-to-read meter.

4501 Battery-Only Thermistor Vacuum Gauge


  • Atmoshere to 10 microns.
  • Ambient temperature compensated.
  • Accuracy: 200-1000 microns: ±5%.
  • Comes complete with Model 4510 Sensor.
  • Battery powered, no searching for outlets (2 "D" cell batteries not included).

14571 Dual Power Thermistor Vacuum Gauge

This analog thermistor vacuum gauge allows you to choose between 110AC and battery as your power source with the same features as the Model 4501.