Dwyer Instruments Series 3000 Photohelic Pressure Switch Gauge Model 3150 NIB

Dwyer Instruments Series 3000 Photohelic® Pressure Switch/Gage Model 3150

The Dwyer Instruments Series 3000 Photohelic® Pressure Switch/Gage Model 3150 is a versatile instrument that combines precise pressure measurement with reliable control capabilities. Designed for monitoring and controlling positive, negative, or differential pressures of air and compatible gases, this device is ideal for applications such as air conditioning systems, clean rooms, and fume exhaust systems.

Key Features

• Dual Functionality: Integrates a highly accurate pressure gage with two phototransistor-actuated, double-pole double-throw (DPDT) relays for low and high limit control.
• Easy Setpoint Adjustment: Front-mounted knobs allow for straightforward adjustment of setpoints, with individual deadbands as narrow as one pointer width, equating to less than 1% of full scale.
• Continuous Monitoring: Provides uninterrupted pressure readings, unaffected by switch operations or power interruptions.
• Versatile Applications: Suitable for controlling fans, dampers, and other equipment requiring precise pressure regulation.

Specifications

• Pressure Range: 0 to 150 inches of water column (in. w.c.).
• Accuracy: ±2% of full scale at 70°F (21.1°C).
• Pressure Limits: -20 inches Hg to 25 psig (-0.677 to 1.72 bar).
• Temperature Limits: Operating range from 20 to 120°F (-6.67 to 48.9°C).
• Process Connections: 1/8″ female NPT.
• Electrical Rating: 10 A at 28 VDC; 10 A at 120 or 240 VAC.
• Power Requirements: Standard models operate on 120 VAC, 50/60 Hz; options available for 240 VAC and 24 VAC.
• Mounting Orientation: Designed for vertical diaphragm positioning; consult factory for other orientations.
• Agency Approvals: CE, CSA, UL.

Applications

• Air conditioning systems
• Clean rooms
• Fume exhaust systems
• Fan and damper control
• Environmental pollution control
• Pneumatic conveying

The Dwyer Instruments Series 3000 Photohelic® Pressure Switch/Gage Model 3150 offers a reliable and efficient solution for precise pressure monitoring and control in various industrial applications.