Original Compressor Pressure Switch Dwyer CX Series

 Compressor Pressure Switch Dwyer  CX  Series

• The Series CX Compressor Pressure Switches are designed with a 20 amp normally closed SPST switch for direct control of pumps and motors.
• The set point and deadband are both easily adjustable via screw terminals inside the cover.
• For ease of installation, the switches come with a 1/4" female NPT process connection or the optional 4-port connection block on the CX-4 models.
• Besides making installation easier, one of the other ports can be used to install a pressure gage. Plus, these switches can be mounted in any orientation.         

Models & Ordering:

Model Number	Description
CX-11	Compressor pressure switch, 1 port, range 25-100 psig (1.7-6.9 bar), approx. adj. deadband 20-30 psig (1.4-2.1 bar), max. pressure 129 psig (8.9 bar).
CX-12	Compressor pressure switch, 1 port, range 35-150 psig (2.4-10.3 bar), approx. adj. deadband 30-40 psig (2.1-2.8 bar), max. pressure 179 psig (12.3 bar).
CX-13	Compressor pressure switch, 1 port, range 50-175 psig (3.4-12.1 bar), approx. adj. deadband 35-55 psig (2.4-3.8 bar), max. pressure 204 psig (14.1 bar).
CX-41	Compressor pressure switch, 4 ports, range 25-100 psig (1.7-6.9 bar), approx. adj. deadband 20-30 psig (1.4-2.1 bar), max. pressure 129 psig (8.9 bar).
CX-42	Compressor pressure switch, 4 ports, range 35-150 psig (2.4-10.3 bar), approx. adj. deadband 30-40 psig (2.1-2.8 bar), max. pressure 179 psig (12.3 bar).
CX-43	Compressor pressure switch, 4 ports, range 50-175 psig (3.4-12.1 bar), approx. adj. deadband 35-55 psig (2.4-3.8 bar), max. pressure 204 psig (14.1 bar).

 

 

Specifications: 

• Service:Air and non-combustible compatible gases.

• Wetted Materials:NBR (Nitrile-Butadiene) rubber diaphragm, steel connection (CX-1), aluminum alloy connection (CX-4).

• Temperature Limits:140°F (60°C).

• Pressure Limits:See Ordering page.

• Enclosure Rating:General purpose.

• Repeatability:±5 psig (±0.3 bar).

• Switch Type:2 each SPST snap action, normally closed (NC).

• Electrical Ratings:20 A @ 120 VAC, 12 A @ 240 VAC, 9.6 A @ 240 VAC (3 phase), 8.6 A @ 32 VDC, 3.1 A @ 120 VDC, 1.6 A @ 240 VDC. 1.5 HP @ 120 VAC, 2 HP @ 240 VAC, 3 HP @ 240 VAC (3 phase), 0.25 HP @ 32/120/240 VDC.

• Electrical Connections:Screw terminal.

• Conduit Connection:7/8" hole for 1/2" conduit hub (2 places).

• Process Connection:1/4" female NPT (CX-4: 4 places).

• Mounting Orientation:Switch can be installed in any position.

• Setpoint Adjustment:Internal screws.

• Weight:CX-1: 0.78 lb (0.35 kg); CX-4: 1.03 lb (0.47 kg).

• Deadband:See Ordering page.

• Agency Approval:CE.