The Dwyer Instruments Series 3000 Photohelic® Pressure Switch/Gage Model A3005 is a versatile instrument that combines precise pressure measurement with reliable switching capabilities.
Key Features
- Dual Functionality: Serves as both a pressure gauge and a switch, allowing for continuous monitoring and control of pressure levels.
- Measurement Range: Capable of measuring pressures from 0 to 5.0 inches of water column (w.c.), suitable for various applications.
- High Accuracy: Offers an accuracy of ±2% of full scale at 70°F (21.1°C), ensuring reliable readings.
- Robust Construction: Features a 4-inch (101.6 mm) dial face housed in durable die-cast aluminum, designed for longevity.
- Switching Capability: Equipped with two phototransistor-actuated, double-pole double-throw (DPDT) relays for low and high limit control.
- Adjustable Set Points: Set point indicators are easily adjustable via knobs located on the gauge face, allowing for precise control.
- Wide Pressure Limits: Handles pressures from -20 inches Hg to 25 psig (-0.677 to 1.72 bar), with options for higher pressure limits.
- Temperature Resilience: Operates effectively within a temperature range of 20 to 120°F (-6.67 to 48.9°C), suitable for various environments.
- Electrical Ratings: Each set point relay is rated at 10 A @ 28 VDC and 10 A @ 120/240 VAC, accommodating different power requirements.
- Compliance: Meets CE, CSA, and UL standards, ensuring adherence to safety and performance regulations.
Applications
The Model A3005 is ideal for monitoring and controlling air and non-combustible gas pressures in various settings, including:
- Air conditioning systems
- Clean rooms
- Fume exhaust systems
- Fan and damper control
Its dual functionality and precise control make it a valuable component in maintaining optimal pressure conditions across diverse industrial and commercial applications.
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