ENVIRO TECH INDUSTRIAL PRODUCTS
GST : 07AOSPS8386M1ZM

Call us now

08045477767

Dwyer 3000MR Photohelic Switch/Gauge 0 to 25 MM

Send Inquiry

Request To Call Back

Dwyer 3000MR Photohelic Switch/Gauge 0 to 25 MM

Get a Price/Quote

Dwyer 3000MR Photohelic Switch/Gauge 0 to 25 MM Specification

Outer Size
4-1/2 (114 mm) Diameter

Grade
Industrial

Display
Analog + Switch

Thread
1/8 NPT Female

Sensor Type
Photohelic Differential Pressure Sensor

Seal Material
Silicone

Material
Die-cast Aluminum Case, Polycarbonate Lens

Dial Material
Polycarbonate

Pointer Material
Aluminum

Processing Type
Die-cast

Diameter
114 mm

Glass Size
114 mm

Mount Type
Flush or Surface Mounting

Scale Range
0 to 25 mm H2O

Accuracy
2% of Full Scale

Finishing
Powder Coated

Measure Pressure Of
Air and Compatible Gases

Accessories
Mounting Bracket, Screws, User Manual

Dwyer 3000MR Photohelic Switch/Gauge 0 to 25 MM Trade Information

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

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

Main Domestic Market
All India

About Dwyer 3000MR Photohelic Switch/Gauge 0 to 25 MM

Dwyer 3000MR Photohelic Switch/Gauge 0 to 25 MM

Series 3000MR/3000MRS Photohelic® Switch/Gage

Combines Differential Pressure Gage with Low/High Set-Points,Compact Size

Model	Description
3000MR-25MM	Pressure Switch/Gage,Range 0-25MM, .50 minor divisions.

Includes

mounting ring, snap ring
18" cable assembly
(2) 3/16" tubing to 1/8" NPT adapters
(2) 1/8" NPT pipe plugs
(4) 6-32 x 1-1/4" RH machine screws (panel mounting)
(3) 6-32 x 5/16" RH machine screws (surface mounting)

he Series 3000MR Photohelic® Switch/Gage combine the functions of a precise, highly repeatable differential pressure switch with a large easy-to-read analog pressure gage employing the durable, time-proven Magnehelic® gage design. Switch setting is easy to adjust with large external knobs on the gage face. Gage reading is unaffected by switch operation - will indicate accurately even if power is interrupted. Solid state design now results in greatly reduced size and weight. Units can be flush mounted in 4-13/16" hole or surface mounted with hardware supplied. 3000MR models employ versatile electromechanical relays with gold over silver contacts - ideal for dry circuits.

Gage accuracy is ±2% of full scale and switch repeatability is ±1%. Switch deadband is one pointer width - less than 1% of full scale. Compatible with air and other non-combustible, non-corrosive gases, they can be used in systems with pressures to 25 psig.

Applications

Fan Control
Damper Control
Environmental Pollution Control

Approvals

CE Approval
GOST-R Certificate

Specification

Service	Air and non-combustible, compatible gases
Accuracy	±2% of FS at 70°F
Pressure Limits	-20" Hg to 25 psig
Temperature Limits	20 to 120°F
Process Connections	1/8 female NPT (duplicated side and back)
Size	4" dial face, 5" O.D. x 3-1/8"
Weight	1.8 lb
Switch Specifications
Switch Type	Each setpoint has 1 Form C relay (SPDT)
Relay Contacts	(resistive load) 1 Form C rated 1.0A @ 30 VDC, 0.3A @ 110 VDC or 0.5A @ 125 VAC. Gold over clad silver - suitable for dry circuits
Electrical Connections	18" cable assembly with 8 conductors
Power Requirements	24 VDC, regulated ±10%
Mounting Orientation	Diaphragm in vertical position
Set Point Adjustment	Adjustable knobs on face
Agency Approvals	CE

Precision Differential Pressure Sensing

The Dwyer 3000MR Photohelic Switch/Gauge excels at monitoring and controlling air and compatible gas pressure differentials with high accuracy (+/-2% of full scale). Its analog display and built-in snap-action switches enable real-time measurement and automated system response, making it ideal for ventilation, filter monitoring, and process applications in industrial settings.

Durable and Versatile Construction

Built with a durable die-cast aluminum case and finished with powder coating, the 3000MR offers both flush and surface mounting options. Its polycarbonate lens and silicone seals ensure longevity, while dual 1/8" NPT female pressure connections support flexible installation. Its well-suited for use in diverse environments, courtesy of its IP54 enclosure rating.

FAQs of Dwyer 3000MR Photohelic Switch/Gauge 0 to 25 MM:

Q: How do I adjust the zero and set points on the Dwyer 3000MR Photohelic Switch/Gauge?

A: The zero adjustment and set point adjustment are accessible via external knobs on the front panel. This allows for quick and easy calibration without the need to open the enclosure or use special tools.

Q: What are the main benefits of using the 3000MR Photohelic Switch/Gauge in industrial applications?

A: This device combines precise analog pressure measurement with direct switch outputs, enabling automated control of ventilation or filtration systems. Its rugged construction, high accuracy, and easy adjustability ensure reliable and maintenance-friendly operation.

Q: When should I use the Dwyer 3000MR to monitor air or gas pressure?

A: Use the 3000MR whenever monitoring or controlling low differential pressures in air or compatible gases is required, such as in HVAC systems, cleanrooms, or filter monitoring where accurate control and indication are essential.

Q: Where can the Dwyer 3000MR Photohelic Switch/Gauge be installed?

A: The 3000MR can be mounted either flush or on a surface thanks to its versatile bracket and mounting options. It is suitable for installation in industrial control panels or directly on machinery where IP54 protection is sufficient.

Q: What electrical connections are supported by this switch/gauge?

A: It features screw terminals for electrical connections, making the wiring process straightforward. The SPDT snap-action contact can handle up to 5A at 120/240 VAC, suitable for switching most industrial control loads.

Q: How is the Dwyer 3000MR maintained in operation?

A: Routine maintenance includes periodic inspection, checking calibration using the external adjustment knobs, and verifying that connection fittings and seals are intact. No special tools are needed for standard adjustments.

Tell us about your requirement