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Dwyer 3030MRS Photohelic Switch/Gauge 0 to 30 inch

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Dwyer 3030MRS Photohelic Switch/Gauge 0 to 30 inch

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Dwyer 3030MRS Photohelic Switch/Gauge 0 to 30 inch Specification

Thread
1/8 NPT Female

Display
Analog

Sensor Type
Differential Pressure Sensor

Seal Material
Neoprene

Outer Size
Standard/Refer Manufacturer

Grade
Industrial Grade

Material
Die-cast Aluminum Case

Dial Material
High-impact Acrylic

Pointer Material
Aluminum

Processing Type
Precision Engineered

Diameter
4-1/2 inch (115 mm)

Glass Size
Full Front View

Mount Type
Surface or Panel Mount

Scale Range
0 to 30 inch WC

Accuracy
2% of Full Scale

Finishing
Powder Coated

Measure Pressure Of
Air and Compatible Gases

Accessories
Mounting Hardware, Instruction Manual

Application
HVAC, Filter Monitoring, Cleanrooms, Industrial Processes

Power Supply
External

Setpoint Range
Adjustable, Through Front Controls

Operating Temperature
20°F to 120°F (-6°C to 49°C)

Response Time
Instantaneous Switching

Switch Type
Photohelic Electronic Switch

Electrical Rating
5A @ 120/240 VAC

Enclosure Protection
IP54

Weight
Approx. 600 g

Compliance
CE Mark, RoHS (Manufacturer info)

Dwyer 3030MRS Photohelic Switch/Gauge 0 to 30 inch Trade Information

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

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

Main Domestic Market
All India

About Dwyer 3030MRS Photohelic Switch/Gauge 0 to 30 inch

Dwyer 3030MRS Photohelic Switch/Gauge 0 to 30 inch

Series 3000MR/3000MRS Photohelic Switch/Gage

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

Model	Description
3030MRS-30 inch	Pressure Switch/Gage,Range 0-30 inch, 1.0 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 70F
Pressure Limits	-20" Hg to 25 psig
Temperature Limits	20 to 120F
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

Versatile Pressure Monitoring and Control

The Dwyer 3030MRS Photohelic Switch/Gauge delivers reliable differential pressure monitoring and electronic switching in one instrument. Its adjustable front controls enable users to set switching points with ease, facilitating instant response in HVAC, cleanroom, and filtration scenarios. The analog dial, clear full-front view, and high-accuracy readings ensure precise monitoring, while panel or surface mounting options offer installation flexibility.

Durable Construction for Tough Conditions

Engineered from die-cast aluminum and protected under an IP54-rated enclosure, the 3030MRS stands up to challenging industrial environments. Its powder-coated finish, neoprene seals, and high-impact acrylic dial enhance longevity, ensuring extended operation in demanding settings. The gauge is supplied with all necessary mounting hardware and an instruction manual for seamless setup.

Advanced Features for Industrial Needs

This model features instant electronic switching, a 2% full scale accuracy, and compatibility with air and many gases. It operates within a wide temperature range (-6C to 49C), is powered externally, and includes CE marking and RoHS compliance for safety and environmental assurance. With 1/8 NPT female thread connections and a 4-1/2 inch diameter, it integrates painlessly into various process lines.

FAQs of Dwyer 3030MRS Photohelic Switch/Gauge 0 to 30 inch:

Q: How do I adjust the setpoint on the Dwyer 3030MRS Photohelic Switch/Gauge?

A: Setpoint adjustment is performed using the front-mounted controls, allowing users to fine-tune switching thresholds without opening the enclosure. This enables quick adaptations for different process requirements or maintenance intervals.

Q: What types of applications benefit from using this Photohelic Switch/Gauge?

A: The 3030MRS is ideal for precision applications such as HVAC system monitoring, cleanroom pressure control, filter condition monitoring, and various industrial process environments involving the measurement of air or compatible gases.

Q: When is instantaneous switching important, and how does this product achieve it?

A: Instantaneous switching is crucial in safety-critical or tightly controlled environments where delays can compromise performance or system integrity. The 3030MRS utilizes electronic switching circuits for near real-time actuation when setpoints are met.

Q: Where should I mount the Dwyer 3030MRS for best performance?

A: This unit is designed for easy panel or surface mounting. Placement should allow the full front analog display to be clearly visible and accessible for adjustments, away from direct exposure to elements beyond its IP54 enclosure rating.

Q: What is the process for integrating the 3030MRS into an existing HVAC or filtration system?

A: Begin by selecting an appropriate mounting location, ensuring good airflow to the sensor ports. Connect process lines to the 1/8 NPT female threads, supply external power, and consult the included instruction manual for electrical and switch wiring procedures.

Q: How does the gauge ensure high accuracy and reliability for industrial applications?

A: The 3030MRS maintains 2% full-scale accuracy, uses precision-engineered components, and features a high-visibility analog display. Its sturdy die-cast aluminum case and neoprene seals help protect internal mechanisms, while compliance with CE and RoHS standards offers further assurance.

Q: What are the benefits of choosing the Dwyer 3030MRS over traditional pressure gauges?

A: Beyond basic pressure measurement, this model offers integrated electronic switching, quick setpoint adjustments, robust protection, and compatibility with modern industrial control systems, streamlining process automation and enhancing operational safety.

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