Dwyer A3330 Photohelic Pressure Switch Gauge Range 15-0-15 Inch W.c.

Dwyer A3330 Photohelic Pressure Switch Gauge Range 15-0-15 Inch w.c.

Dwyer A3330 Photohelic Pressure Switch/Gauge (15-0-15 Inch w.c.)

Model: A3330

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 A3330

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 A3330 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)