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Dwyer 3000MRS Photohelic Switch/Gauge 0 to 125 Pa

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Dwyer 3000MRS Photohelic Switch/Gauge 0 to 125 Pa

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Dwyer 3000MRS Photohelic Switch/Gauge 0 to 125 Pa Specification

Display
Analog

Sensor Type
Photohelic

Grade
Industrial

Seal Material
Neoprene

Material
Die Cast Aluminum Housing

Dial Material
Polycarbonate

Pointer Material
Aluminum

Processing Type
Die Cast

Diameter
Approximately 4 (101.6 mm)

Mount Type
Surface/Panel Mount

Scale Range
0 to 125 Pa

Accuracy
2% of Full Scale

Finishing
Powder Coated

Measure Pressure Of
Air and Non-Conductive Gases

Accessories
Mounting Brackets, Screw Kit, Instruction Manual

Dwyer 3000MRS Photohelic Switch/Gauge 0 to 125 Pa Trade Information

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

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

Main Domestic Market
All India

About Dwyer 3000MRS Photohelic Switch/Gauge 0 to 125 Pa

Dwyer 3000MRS Photohelic Switch/Gauge 0 to 125 Pa

Series 3000MR/3000MRS Photohelic® Switch/Gage

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

Model	Description
3000MRS-125 Pa	Pressure Switch/Gage,Range 0-125 Pa, 5.0 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 Monitoring for Industrial Applications

The 3000MRS Photohelic Switch/Gauge precisely measures differential pressure in air and non-conductive gases, essential for demanding industrial environments. Thanks to its 2% full-scale accuracy and fast response time, this gauge ensures dependable readings and rapid switch action, contributing to reliable process control.

Durable Construction and Versatile Installation

Built with a die-cast aluminum housing, the device provides sturdy protection and longevity. It supports surface or panel mounting and offers both back and side process connection options for seamless integration into various setups, accompanied by mounting hardware for quick installation.

User-Friendly Design and Adjustments

Set point adjustments are easily managed through external screwdriver slots on the front panel, reducing downtime during configuration or recalibration. The clear analog display enhances visibility, while ingress protection safeguards the internal mechanisms against dust and moisture.

FAQs of Dwyer 3000MRS Photohelic Switch/Gauge 0 to 125 Pa:

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

A: Set points can be adjusted externally using the screwdriver slots located on the front panel. This design enables swift and convenient setpoint changes without the need to disassemble the device.

Q: What types of gases can be measured with this Photohelic gauge?

A: The Dwyer 3000MRS is engineered to measure differential pressure in air and non-conductive gases, making it suitable for a wide range of ventilation, filtration, and process control applications.

Q: When should I consider using the 3000MRS model in my process?

A: Deploy the 3000MRS Photohelic Switch/Gauge when you require accurate pressure monitoring and control in environments that demand reliability, such as HVAC systems, cleanrooms, and industrial air handling applications.

Q: Where can this gauge be mounted in my system?

A: The unit supports both surface and panel mounting, with process connections available on the back or side (depending on your configuration), granting flexibility in integration locations within your system.

Q: What are the benefits of the electro-optical Photohelic switches?

A: Electro-optical switches ensure rapid response (under 1 second), reliable actuation, and minimal mechanical wear, all of which enhance the operational lifespan and dependability of the device.

Q: How does the IP54 rating impact usage in industrial settings?

A: With an IP54 front panel rating when flush-mounted, the 3000MRS resists ingress from dust and splashing water, protecting vital components and supporting durability in challenging industrial environments.

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