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Series 62 Constant-Differential Relay
Brand: Siemens AGSeries 62 Constant-Differential Relays serve as air-flow controllers maintaining a constant air purge for each setting of an integral needle valve.
Features- The ability to maintain constant-differential pressure drop across a built-in needle valve ensures a constant volumetric flow rate
- Maintains constant bubbling rate in liquid level applications, eliminating the problems of typical conventional bubbling systems
- The ability to produce reasonable purge rates eliminates the need for a supply regulator
- Epoxy powder coating provides improved corrosion resistance
Specifications
Brand
Ambient Temperature
- -40° to 180° F (-40° to 82° C)
- -40° to 160° F (-40° to 71° C) with Rotometer
Material of Construction
- Relay: Brass, Stainless Steel, Neoprene, Aluminum, and Buna-N
- Rotometer: Brass (Fitting), Stainless Steel, Borosilicate Glass, Aluminum, Ruby Saphire (Float), and Buna-N (O-Ring)
Purge Rate
- 0.06 to 2.1 scfh
Supply Pressure
- 5 to 150 psig
Rotometer Pressure
- Maximum 200 psig (1,380 kPa)
Supply Pressure Effect
- 0.18 scfh (Max.) Flow Change for 25 psi Increase of Supply
