Dwyer Series 43002 Capsu-Photohelic Pressure Switch Gage 0-2.0" w.c.

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Dwyer Series 43002 Capsu-Photohelic Pressure Switch Gage 0-2.0" w.c. Specification

Thread
1/8 NPT Female

Outer Size
Standard 4 Dial

Display
Analog Gauge with Dual Set Point LEDs

Bourdon Tube
Not Applicable (uses diaphragm sensor)

Grade
Industrial

Sensor Type
Capsu-Photohelic

Seal Material
Neoprene

Material
Die Cast Aluminum Case, Acrylic Lens

Dial Material
Acrylic

Pointer Material
Anodized Aluminum

Processing Type
Precision Machined

Diameter
4 inches (101.6 mm)

Glass Size
4 inches

Mount Type
Surface or Panel Mount

Scale Range
0-2.0 w.c. (Water Column)

Accuracy
2% of Full Scale

Finishing
Textured Painted Steel Housing

Measure Pressure Of
Air and Compatible Gases

Accessories
Mounting Bracket, Installation Manual

Dwyer Series 43002 Capsu-Photohelic Pressure Switch Gage 0-2.0" w.c. Trade Information

Payment Terms
Cash Advance (CA), Cash on Delivery (COD), Cash Against Delivery (CAD), Cash in Advance (CID), Cheque

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

Main Domestic Market
All India

About Dwyer Series 43002 Capsu-Photohelic Pressure Switch Gage 0-2.0" w.c.

Dwyer Series 43002 Capsu-Photohelic Pressure Switch Gage 0-2.0" w.c.

Model	Description
43002	Pressure Switch/Gage, Range 0-.2.0" w.c.

Lo-Limit and Hi-Limit Control, Aluminum Case

Capsu-Photohelic® Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic® gage design. The Capsu-Photohelic® switch/gage employs an encapsulated sensing element for use with both liquids and gases at pressures to 500 psig. 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 pumps, etc.

Specification

Gage Specifications
Service	Compatible gases and liquids. Aluminum case
Accuracy	±3% of FS at 70°F
Range	0-2.0" w.c.
Temperature Limits	20 to 120°
Process Connections	1/4" female NPT
Size	4" dial face, 5" O.D. x 9-3/16"
Weight	5 lb 8 oz
Switch Specifications
Switch Type	2 Form C relays (DPDT)
Repeatability	±1% of FS
Electrical Rating	10A @ 120 VAC, 6A @ 240 VAC, 60 Hz res. 10A @ 28 VDC
Electrical Connections	Screw Terminals
Power Requirements	120 VAC, 50/60 Hz
Mounting Orientation	Diaphragm in vertical position
Set Point Adjustment	Adjustable knobs on face

Precision Low-Pressure Monitoring for Industrial Applications

Engineered for critical environments, the Dwyer Series 43002 Capsu-Photohelic delivers highly accurate pressure measurement and control in HVAC systems, cleanrooms, and industrial process lines. The gauge combines immediate mechanical and electrical response with dual visual set points to ensure easy, at-a-glance monitoring and fast adjustments. Its external knob set-point adjustment and robust, RoHS-compliant construction provide long-lasting reliability in demanding settings.

User-Friendly Design and Fast Installation

The Capsu-Photohelic gauge features a large 4-inch analog dial with clear displays and dual LED indicators for instant set point confirmation. Installation is straightforward with an included mounting bracket and 1/8 NPT female thread, allowing for either surface or panel mounting to suit your project needs. The textured painted steel housing and die-cast aluminum case not only ensure durability but add a professional finish to any setup.

FAQs of Dwyer Series 43002 Capsu-Photohelic Pressure Switch Gage 0-2.0" w.c.:

Q: How do I adjust the set points on the Dwyer Series 43002 Capsu-Photohelic Pressure Switch Gage?

A: The set points can be adjusted externally via a knob located on the gauges faceplate, allowing users to conveniently dial in the desired pressure thresholds for switching without removing the unit from its installation.

Q: What are the primary applications for this pressure switch gauge?

A: This device is commonly used for fan control, filter monitoring, air flow measurement, and duct static pressure regulation in HVAC and industrial environments requiring reliable low-pressure monitoring.

Q: When should I use a Capsu-Photohelic gauge instead of a traditional pressure switch?

A: Choose the Capsu-Photohelic gauge when both visual pressure indication and precise electrical switching are required. Its dual-function design and immediate response are ideal for processes where both monitoring and automated control are necessary.

Q: Where can I install the Series 43002 pressure switch gauge?

A: The gauge is suitable for surface or panel mounting and comes with a mounting bracket for easy installation. Its general-purpose, NEMA 1rated enclosure fits most industrial and commercial facility requirements.

Q: What is the process for wiring the SPDT electrical contacts?

A: Wire the single-pole double-throw (SPDT) contacts according to your control circuits requirements, using the provided installation manual for reference. The gauges 10A @ 120/240 VAC rating accommodates various control and alarm circuits without needing additional relays in most cases.

Q: How does using this gauge benefit my operation?

A: The gauge combines analog readout and reliable electrical switching in a single device, increasing efficiency, enhancing safety, and simplifying maintenance. Its durable construction and 2% full-scale accuracy ensure dependable measurement for sensitive operations.

Q: What media can be measured with the Dwyer Series 43002?

A: This gauge is designed for the measurement of air and compatible gases only, making it suitable for non-corrosive media in HVAC and process monitoring applications.

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