About Dwyer A3220 Photohelic Pressure Switch Gauge Range 0-20 psi
Dwyer A3220 Photohelic Pressure Switch Gauge Range 0-20 psi
Dwyer A3220 Photohelic Pressure Switch/Gauge (0-20 psi)
Model: A3220
Bezel and front cover (with set point knobs and zero adjustment screw) removed to expose Photohelic® switch/gage set point mechanism. Cover is clear polycarbonate plastic. Gage pointer and light shutter are mounted on helix and balancing counterweight.
Dwyer A3220 Offers
Features
- Measure 4 to 20 mA signals without "breaking the loop"
- Measure mA signals for PLC and control system analog I/O
- Dual backlit display with both mA measurement and percent of 4 to 20 mA span
- Measurement Spotlight illuminates hard to see wires in dark enclosures
- Detachable clamp with extension cable for measurements in tight locations
- Measure 10 to 50 mA signals in older control systems using the 99.9 mA range
- Automatically change the 4 to 20 mA output for remote testing
- Power saving features, auto-off, backlight timeout extend battery life
- Hold function captures and displays changing measurements
Applications
- Air Conditioner Systems
- Clean Rooms
- Fume Exhaust Systems
Dwyer A3220 Specifications
Switch Specifications
- Switch Type: Each set point has 2 Form C relays (DPDT)
- Repeatability: ±1% of FS
- Electrical Rating: 10 A at 28 VDC,10 A at 120,240 VAC
- Electrical Connections: Screw terminals. Use 167°F (75°C) copper conductors only
- Power Requirements: 120 VAC, 50/60 Hz,240 VAC and 24 VAC power optional
- Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations
- Set Point Adjustment: Adjustable knobs on face
- Agency Approvals: CE, CSA, UL
Gauge Specifications
- Service: Air and non-combustible, compatible gases
- Accuracy: ±2% of FS at 70°F (21.1°C),±3% on -0,±4% on -00 models
- Pressure Limits: -20" Hg to 25 psig (-0.677 to 1.72 bar),MP option; 35 psig (2.41 bar),HP option; 80 psig (5.52 bar)
- Temperature Limits: 20 to 120°F. (-6.67 to 48.9°C),-20 to 120°F (-28 to 48.9°C) with low temperature option
- Process Connections: ? female NPT
- Dimensions: 4" (101.6 mm) dial face,5 x 8¼" (127 x 209.55 mm)
- Weight: 4 lb (1.81 kg)
FAQs of Dwyer A3220 Photohelic Pressure Switch Gauge Range 0-20 psi:
Q: What is the mount type of the Dwyer A3220 Photohelic Pressure Switch Gauge?
A: The mount type of the Dwyer A3220 Photohelic Pressure Switch Gauge is surface mount.
Q: What is the measurement range of the Dwyer A3220 Photohelic Pressure Switch Gauge?
A: The Dwyer A3220 Photohelic Pressure Switch Gauge has a range of 0-20 psi for measuring gas pressure.
Q: What is the diameter of the dial face of the Dwyer A3220 Photohelic Pressure Switch Gauge?
A: The Dwyer A3220 Photohelic Pressure Switch Gauge has a 4" (101.6 mm) dial face.
Q: What gases can the Dwyer A3220 Photohelic Pressure Switch Gauge measure pressure of?
A: The Dwyer A3220 Photohelic Pressure Switch Gauge is designed to measure the pressure of air and non-combustible gases.
Q: What is the weight of the Dwyer A3220 Photohelic Pressure Switch Gauge?
A: The Dwyer A3220 Photohelic Pressure Switch Gauge weighs 4 lb (1.81 kg).