Dwyer A3000-00 Photohelic Pressure Switch Gauge Range 0-.25 Inch w.c./300-2000 FPM

About Dwyer A3000-00 Photohelic Pressure Switch Gauge Range 0-.25 Inch w.c./300-2000 FPM

Dwyer A3000-00 Photohelic Pressure Switch Gauge Range 0-.25 Inch w.c./300-2000 FPM

Photohelic Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic gage design. The Photohelic switch/gage measures and controls positive, negative or differential pressures of air and compatible gases. Standard models are rated to 25 psig (1.7 bar) with options to 35 (2.4) or 80 (5.5 bar) psig. Single pressure 36000S models measure to 6000 psig (413 bar) with a 9000 psig (620 bar) rating. Two phototransistor actuated, DPDT relays are included for low/high limit control. Easy to adjust set point indicators are controlled by knobs located on the gage face. Individual set point deadband is one pointer width - less than 1% of full scale. Set points can be interlocked to provide variable deadband - ideal for control of fans, dampers, etc. Gage reading is continuous and unaffected by switch operation, even during loss of electrical power. Choose from full scale pressure ranges from a low 0-.25" (0-6 mm) w.c. up to 30 psi (21 bar); single positive pressure to 6000 psig (413 bar).

Availability: Item ships in about Ships in 4-6 Weeks

Dwyer A3000-00AV 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 A3000-00AV 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 48.9C)

                                        -20 to 120 F (-28 to 48.9C) with low temperature option

Process Connections : female NPT

Dimensions :        4" (101.6 mm) dial face

                               5 x 8 " (127 x 209.55 mm)

Weight :                4 lb (1.81 kg)

High Precision Low Pressure Measurement

The Dwyer A3000-00 excels in measuring low air or gas differential pressure, ranging from 0 to 0.25 inch w.c. and 300-2000 FPM air velocity. With 2% full-scale accuracy and an easy-to-read analog display, it reliably monitors critical HVAC or process conditions in industrial settings.


Versatile Switch Functionality

Equipped with two SPDT Photohelic switches, the A3000-00 enables both pressure measurement and control. The instantaneous relay action enhances system automation, allowing for seamless integration into monitoring or alarm circuits, making it an efficient choice for varied industrial applications.


Industrial-Grade Durability and Protection

The instrument's rugged die-cast aluminum case, polycarbonate cover, and Buna-N seals ensure longevity, while its NEMA 2 (IP54 equivalent) enclosure protects against dust and accidental water exposure. The robust construction and wide temperature tolerance (20 to 120F) ensure stable operation even in challenging environments.