Devices are also available that are rated for hazardous duty or for unlisted, specialized or proprietary materials. Typically, vacuum gauges use accuracy grades from the American Society of Mechanical ...

The temperature measure is done with a thermocouple. Pirani Vacuum Gauge. Image credit: Handbook of Modern Sensors Ionization gauge Vacuum gauges which use ions are similar to vacuum tubes. The ...

As it happens, Harbor Freight sells such a piece of equipment through its in-house vacuum and pump brand, Pittsburgh: the A/C Manifold Gauge Set. This gadget can be used to run tests on your ...