Dwyer Series 43001 Capsu-Photohelic Pressure Switch Gage 0-1.0" w.c.

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Dwyer Series 43001 Capsu-Photohelic Pressure Switch Gage 0-1.0" w.c. Specification

Display
Analog + Photohelic Digital Switching (LED Status)

Sensor Type
Capsule Differential Pressure Sensor

Seal Material
Silicone Rubber

Bourdon Tube
Not Applicable (Uses Capsule Sensing Element)

Grade
Industrial

Outer Size
Bezel: 4-1/2 inch (115 mm) diameter approx.

Thread
1/8 NPT Female

Material
Die-cast Aluminum Case, Polycarbonate Lens

Dial Material
Aluminum with Polycarbonate Overlay

Pointer Material
Anodized Aluminum

Processing Type
Electromechanical Switching with Mechanical Indication

Diameter
4-1/2 inch Dial

Glass Size
Approximately 4.5 inch (Front Window)

Mount Type
Surface Mount / Flush Mount

Scale Range
0-1.0 inch w.c. (Water Column)

Accuracy
2% of Full Scale

Finishing
Powder Coated Housing, Aluminum Faceplate

Measure Pressure Of
Air and Non-combustible, Compatible Gases

Accessories
Mounting Bracket, Hardware, Panel Mount Kit, Gasket

Dwyer Series 43001 Capsu-Photohelic Pressure Switch Gage 0-1.0" w.c. Trade Information

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

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

Main Domestic Market
All India

About Dwyer Series 43001 Capsu-Photohelic Pressure Switch Gage 0-1.0" w.c.

Dwyer Series 43001 Capsu-Photohelic Pressure Switch Gage 0-1.0" w.c.

Model	Description
43001	Pressure Switch/Gage, Range 0-.1.0" 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	0-1.0" 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

Reliable Differential Pressure Control

With a capsule differential pressure sensor and dual SPDT switches, the Series 43001 delivers precise monitoring and switching for air handling units, clean rooms, and filter status applications. Its electromechanical design ensures dependable performance in industrial environments.

Intuitive Adjustments and Easy Installation

Set zero and switch points conveniently with front-facing external knobs, enabling quick field adjustments without disassembly. Multiple mounting options and included hardware streamline installation, making it suitable for both new projects and retrofit upgrades.

FAQs of Dwyer Series 43001 Capsu-Photohelic Pressure Switch Gage 0-1.0" w.c.:

Q: How do I adjust the switch set points and zero calibration on the Dwyer Series 43001 Capsu-Photohelic Gauge?

A: You can adjust the switch set points and zero calibration externally using the front-facing knobs on the device. This allows for straightforward, tool-free calibration and set point changes without the need to remove the gauge from its mounting.

Q: What types of media can this pressure switch gauge measure?

A: This gauge is designed to measure the differential pressure of air and non-combustible, compatible gases. It should not be used with liquids or flammable gases.

Q: When should I choose the Series 43001 Capsu-Photohelic for my application?

A: Opt for this model when you require accurate low-pressure monitoring and switching (01.0 inch w.c. range), robust construction for industrial use, and a device that integrates both mechanical indication and electronic control.

Q: Where can the Dwyer Series 43001 be installed?

A: You can install the gauge on flat surfaces using the surface mount bracket, or flush-mounted into control panels. Its IP54 rated enclosure protects against dust and water splashes, making it suitable for many indoor industrial environments.

Q: What is the process connection type for this device?

A: This model uses 1/8" NPT female high and low pressure taps, ensuring compatibility with standard pneumatic tubing and fittings commonly found in HVAC and industrial systems.

Q: How does the gauge operate without external power, and what are its power requirements?

A: The gauges measurement function is purely mechanical and doesnt require external power. However, the switching circuit should match the rated electrical specification of each SPDT switch: 10A @ 120/240 VAC or 3A @ 24 VDC.

Q: What benefits does the combination of analog display with Photohelic digital switching offer?

A: You gain both a continuous analog visual indication of differential pressure and precise electronic switching with LED status feedback, enhancing usability and process control reliability.

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