Dwyer 3000MRS Photohelic Switch/Gauge 0 to 10 MM

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Dwyer 3000MRS Photohelic Switch/Gauge 0 to 10 MM

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Dwyer 3000MRS Photohelic Switch/Gauge 0 to 10 MM Specification

Display
Analog

Thread
1/8 NPT Female High and Low Pressure Connections

Grade
Industrial

Sensor Type
Photohelic Switch/Gauge

Seal Material
Silicone Rubber

Outer Size
144 mm x 144 mm (Approx.)

Material
Die Cast Aluminum Housing

Dial Material
White Backlighted Plastic

Pointer Material
Aluminum

Processing Type
Factory Assembled

Diameter
Approx. 100 mm (Dial Face)

Glass Size
100 mm

Mount Type
Panel Mount

Scale Range
0 to 10 mm

Accuracy
2% of Full Scale

Accessories
Standard Mounting Hardware, Instruction Manual

Electrical Connections
Screw Terminals

Switch Type
SPDT Snap Switch

Enclosure Rating
IP54

Contact Rating
10A @ 120/240 VAC

Weight
Approx. 1.2 kg

Power Supply
120/240 VAC, 50/60 Hz

Number of Switches
2

Compliances
CE Marked

Operating Temperature Range
-20C to +60C

Dwyer 3000MRS Photohelic Switch/Gauge 0 to 10 MM Trade Information

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

Main Export Market(s)
Asia

Main Domestic Market
All India

About Dwyer 3000MRS Photohelic Switch/Gauge 0 to 10 MM

Dwyer 3000MRS Photohelic Switch/Gauge 0 to 10 MM

Series 3000MR/3000MRS Photohelic® Switch/Gage

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

Model	Description
3000MRS-10 MM	Pressure Switch/Gage,Range 0 - 10 MM, .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

Robust Pressure Sensing for Demanding Environments

Engineered for industrial use, the Dwyer 3000MRS Photohelic Switch/Gauge ensures dependable pressure monitoring and switching. Its factory-assembled construction, silicone rubber seals, and die-cast aluminum housing provide excellent durability, while the IP54 enclosure guards against dust and splashing water-making it ideal for a range of process industries dealing with steam, oil, or gas.

Precision Control with Dual Switch Functionality

This device incorporates two SPDT snap switches, supporting advanced process control by providing both visual pressure readings and electrical switching. Designed for systems needing reliable status feedback, the 3000MRS supports efficient process automation while simplifying the integration into existing setups via screw terminals and standard 1/8 NPT female connections.

FAQ's of Dwyer 3000MRS Photohelic Switch/Gauge 0 to 10 MM:

Q: How do I install the Dwyer 3000MRS Photohelic Switch/Gauge?

A: Installation is straightforward using the provided standard mounting hardware. The device is designed for panel mounting, and electrical connections should be made using the screw terminals. Pressure inputs are connected via 1/8 NPT female threads for both high and low pressure.

Q: What is the primary benefit of the Photohelic switch/gauge design?

A: The Photohelic switch/gauge combines precise analog pressure measurement with electronic switching functions, enabling real-time monitoring and automatic control in a compact, integrated unit. This enhances system safety and optimizes process efficiency.

Q: When should I use this gauge in my process system?

A: The 3000MRS is ideal in any application where both pressure monitoring and automatic control are required, such as in steam, oil, or gas systems. Its accuracy and dual-switching capability make it suitable for controlling processes, detecting system deviations, or providing safety interlocks.

Q: Where can the Dwyer 3000MRS be deployed?

A: This switch/gauge is suitable for industrial environments, including refineries, chemical plants, and processing facilities. The IP54 enclosure rating means it can withstand dusty or mildly wet conditions but should not be submerged.

Q: What is the operational process for using the switches?

A: The dual SPDT snap switches activate when set pressure thresholds are reached. You can wire these switches into your process control system, allowing for automatic alerts, system shutdowns, or valve actuation based on real-time pressure readings.

Q: Is the gauge compliant with international standards?

A: Yes, the Dwyer 3000MRS is CE marked, ensuring it meets relevant European safety, health, and environmental requirements, making it suitable for use in regulated markets.

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