Product Description
Dwyer A3300-20MM Photohelic Pressure Switch Gauge Range 10-0-10 mm w.c.
Dwyer A3300-20MM Photohelic Pressure Switch/Gauge (10-0-10 mm w.c.)
Model: A3300-20MM
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 A3300-20MM 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 A3300-20MM 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)