Description

Refrigeration Pressure Gauge  also known as freon pressure gauge is used for measuring refrigeration system or all kinds of frozen system pressure measurement, such as air-conditioning, cold storage refrigeration system, industrial chillers, cold coal filling equipment, as well as central air-conditioning

Specifications
Size:  2.5″ (63 mm)
Accuracy: ±3/2/3%(ASME B40.1 Grade B)
Case: red or blue plastic case
Lens:  Acrylic
Wetted parts: Brass
Operating Temperature: Ambient: -40 to 60°C (-40°F to 140°F)
Process fluid: max 60°C (140°F)
Dial: Aluminum with black & red markings
Pointer: Black aluminum
Connection:  1/8″ NPT or BSP bottom
Ranges: 30″Hg-0-500psi or -30″Hg-0-250psi
Protection degree: IP52
Freon scales: R-12, R-22, R-502, R-134, R404A

Protection
– If pressure gauges are to be used for steam service, a siphon tube filled with water must be installed between gauge and line to prevent live steam from entering the Bourdon tube.
– A gauge cock should be installed in the pressure line. This might be the standard shut-off valve or a needle valve for throttling pressure pulses.
– If severe pulsation exists, the gauge should be protected by adding a throttling orifice
screw in the gauge socket or by addition of a pulsation damper, such as a snubber.
– A diaphragm seal should be used in applications where process media should not come in contact with gauge.

We invite you to check out our post:  When should you use liquid-filled pressure gauges?

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