Dwyer A3300-20MM Photohelic Pressure Switch Gauge

About Dwyer A3300-20MM Photohelic Pressure Switch Gauge

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)

Versatile Measurement and Control

The Dwyer A3300-20MM Photohelic Pressure Switch Gauge enables simultaneous pressure display and switching, making it suitable for multifaceted industrial applications. Its robust construction with a metal alloy body ensures longevity and performance, while the clear 4-inch dial provides excellent readability. Designed for both monitoring and safeguarding processes, it streamlines control in demanding environments.


Wide Range of Applications

Featuring adaptability to various media, this pressure switch gauge accurately monitors steam, oil, and gas pressures. Its application scope spans air conditioner systems, clean rooms, and fume exhaust systems, ensuring consistent environmental or process pressures. The wide scale range and sturdy build support optimal performance in manufacturing, laboratory, and HVAC settings across India.


Precision and Reliability

With a precision of 2% of full scale at 70F, the Photohelic Gauge ensures reliable measurements even under fluctuating temperatures. The choice of durable materials extends the gauge's lifespan and guarantees minimal maintenance. Its aluminum pointer and plastic dial combination underlines a design focused on sustained accuracy and ease of use.