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Dwyer A3000-00 Photohelic Pressure Switch Gauge 0-0.25 Inch WC

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Dwyer A3000-00 Photohelic Pressure Switch Gauge 0-0.25 Inch WC

Price 40000 INR/ Piece

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MOQ : 1 Piece

Dwyer A3000-00 Photohelic Pressure Switch Gauge 0-0.25 Inch WC Specification

Bourdon Tube
Not Applicable (Diaphragm Sensing)

Sensor Type
Photohelic Sensor

Thread
1/8 NPT Female

Display
Analog with Dual Set Point Indicators

Outer Size
4 (101.6 mm) Diameter Front Bezel

Seal Material
Silicone

Grade
Industrial Grade

Material
Die Cast Aluminum Case, Polycarbonate Lens

Dial Material
Polycarbonate

Pointer Material
Metal

Processing Type
Electromechanical

Diameter
4 inch (101.6 mm)

Glass Size
Full Front (approx. 4 inch)

Mount Type
Panel Mount

Scale Range
range 0-.25" w.c.

Accuracy
2% of Full Scale

Finishing
Anodized Aluminum Housing

Measure Pressure Of
Low Air and Non-corrosive Gases Differential

Accessories
Mounting hardware, instruction manual

Power Supply
No external power required for gauge indication; switching requires line voltage

Mounting Orientation
Vertical Preferred

Weight
Approx. 680 grams

Enclosure Rating
IP54 (Front)

Repeatability
0.5% of Full Scale

Switch Type
SPDT (Single-Pole Double-Throw), 2 Switches

Electrical Connection
Screw Terminals

Switch Rating
5A @ 120/240 VAC

Response Time
Instantaneous (per switch)

Operating Temperature Range
20 to 120F (-6.67 to 48.9C)

Dwyer A3000-00 Photohelic Pressure Switch Gauge 0-0.25 Inch WC Trade Information

Minimum Order Quantity
1 Piece

Payment Terms
Cash on Delivery (COD), Paypal, Cash Against Delivery (CAD), Telegraphic Transfer (T/T), Cheque, Cash Advance (CA)

Sample Policy
Free samples available with shipping and taxes paid by the buyer

Main Export Market(s)
Western Europe, Asia, Australia, South America, Eastern Europe, Middle East, Central America, North America, Africa

Main Domestic Market
Daman and Diu, Dadra and Nagar Haveli, Chandigarh, Himachal Pradesh, Sikkim, Nagaland, Uttarakhand, Lakshadweep, , South India, North India, East India, Andaman and Nicobar Islands, Andhra Pradesh, Assam, Arunachal Pradesh, Bihar, Goa, Haryana, Jammu and Kashmir, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Mizoram, Meghalaya, Manipur, Punjab, Pondicherry, Rajasthan, Tamil Nadu, Telangana, Tripura, Uttar Pradesh, West Bengal, Delhi, Gujarat, Central India, Odisha, West India, Chhattisgarh, All India

Certifications
YAS

About Dwyer A3000-00 Photohelic Pressure Switch Gauge 0-0.25 Inch WC

Dwyer A3000-00 Photohelic Pressure Switch Gauge, 0-0.25 Inch WC

Dwyer A3000-00 Photohelic Pressure Switch/Gauge, 0-0.25" WC, 1/8" NPT(F

MORE ABOUT THIS ITEM

The Photohelic switch/gauge functions as versatile, highly repeatable pressure switches combined with a precise pressure gauge employing the time-proven Magnehelic gauge design. The Photohelic switch/gauge measures and controls positive, negative or differential pressures of air and compatible gases. Two phototransistor actuated, DPDT relays are included for low/high limit control. Easy to adjust setpoint indicators are controlled by knobs located on the gauge face. Individual setpoint deadband is one pointer width - less than 1% of full scale. Setpoints can be interlocked to provide variable deadband - ideal for control of fans, dampers, etc. Gauge reading is continuous and unaffected by switch operation, even during loss of electrical power. In typical applications, these switch/gauges control between high and low pressure set points. When pressure changes, reaching either set point pressure, the infrared light to the limiting phototransistor is cut off by the helix-driven light shutter. The resulting phototransistor signal is electronically amplified to actuate its DPDT slave relay and switching occurs. Dead band between make and break is 1% of full scale or less - just enough to assure positive, chatter-free operation. A plastic housing protects all electronic components. Solid-state and integrated circuit electronics are on glass-epoxy printed circuit boards and self-extinguishing terminal boards.<br><br>

Photohelic switch/gauges are used to control pressures in air conditioning systems, clean rooms, fluidic and pneumatic control systems, materials handling equipment, alarm or control fume exhaust systems, control pressure in air structures, and monitor respiratory and blood pressures.

Warning: This product is not approved or intended for, and should not be used for medical, clinical, surgical or other patient oriented applications.

Specifications & Description

Accuracy: A2% full-scale at 70AF (21AC)

Dial Size (in): 4

Dial Size (mm): 102

Min Pressure (in WC): 0

Max Pressure (in WC): 0.25

Min Temperature (A F): 20

Max Temperature (A F): 120

Min Temperature (A C) : 7

Max Temperature (A C): 60

Case : Aluminum

Lens Material : Polycarbonate

Process Connection :1/8" NPT(F)

Unit Of Measurement : " WC

Display Analog : dial

Battery Type : 120 VAC, 50/60 Hz

Electrical Connections: Screw terminal

Switch output : 10 A at 120/240 VAC/28 VDC

Output : DPDT

Media Compatibility : Air and noncombustible, noncorrosive gases

Description : Photohelic Pressure Switch/Gauge, 0-0.25" WC, 1/8" NPT(F)

Reliable Low Pressure Monitoring for Industrial Applications

Engineered for safe and reliable measurement, the Dwyer A3000-00 Photohelic Pressure Switch Gauge offers superior accuracy (2% of full scale) in monitoring low differential air and non-corrosive gas pressures. Its vertical mounting orientation and IP54 front-rated enclosure make it ideal for control panels and equipment rooms.

Dual SPDT Switches Enhance Process Control

Outfitted with two SPDT (Single-Pole Double-Throw) switches, this gauge allows users to configure control set points for high and low pressure limits. The switches support up to 5A at 120/240 VAC, enabling integration into automated systems for alarms or process control.

Simple Installation and Maintenance

With screw terminal electrical connections and included mounting hardware, installation is straightforward. The robust anodized aluminum housing and full-size polycarbonate lens make maintenance easy and enhance product longevity even in tough environments.

FAQ's of Dwyer A3000-00 Photohelic Pressure Switch Gauge 0-0.25 Inch WC:

Q: How does the Dwyer A3000-00 Photohelic Pressure Switch Gauge operate?

A: This gauge uses a diaphragm-based photohelic sensor to measure low differential pressures of air or non-corrosive gases. It displays the reading via an analog dial and activates its SPDT switches when the pressure crosses preset set points.

Q: What are the recommended installation and mounting procedures?

A: For optimal accuracy and safety, it should be panel mounted with a vertical orientation using the supplied hardware. Electrical connections use screw terminals and the gauge is designed for indoor locations with a front exposure rating of IP54.

Q: When should I use this gauge in my process?

A: The Dwyer A3000-00 is ideal when you require reliable, instant switching and visual monitoring of very low differential pressure values, such as in HVAC air handling units, clean room monitoring, or filter status indication.

Q: Where can this gauge be utilized?

A: It is fit for use in industrial settings throughout India, including manufacturing plants, laboratories, equipment rooms, and any environment monitoring low pressure of air or non-corrosive gases.

Q: What is the benefit of the dual SPDT switches?

A: Having two SPDT switches allows you to set upper and lower pressure limits for activating alarms or control relays, improving process safety and automation efficiency.

Q: Does the gauge require an external power supply for operation?

A: No external power is needed for pressure indication. However, the switching function requires connection to a line voltage (120/240 VAC) circuit.

Q: How accurate is the Dwyer A3000-00 and what is its repeatability?

A: The gauge provides 2% full scale accuracy and a repeatability of 0.5% of full scale, ensuring consistent performance for critical low pressure monitoring tasks.

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