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Dwyer 3015MRS Photohelic Switch/Gauge 0 to 15 inch

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Dwyer 3015MRS Photohelic Switch/Gauge 0 to 15 inch

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Dwyer 3015MRS Photohelic Switch/Gauge 0 to 15 inch Specification

Bourdon Tube
Not Applicable (Diaphragm Based)

Outer Size
4-9/16 inch (115.9 mm) Diameter

Grade
Industrial

Thread
1/8 NPT Female

Seal Material
Silicone

Display
Analog with Digital Switching

Sensor Type
Photohelic Differential Pressure Sensor

Material
Die-cast Aluminum Housing

Dial Material
Polycarbonate

Pointer Material
Aluminum

Processing Type
Electromechanical with Switch Outputs

Diameter
4-9/16 inch (115.9 mm)

Glass Size
4 inch (Approximate Viewable Area)

Mount Type
Panel Mount

Scale Range
0 to 15 inch WC

Accuracy
2% of Full Scale

Finishing
Textured Gray Enamel

Measure Pressure Of
Low Air and Non-Corrosive Gas

Accessories
Mounting Hardware, Instruction Manual

Dwyer 3015MRS Photohelic Switch/Gauge 0 to 15 inch Trade Information

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

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

Main Domestic Market
All India

About Dwyer 3015MRS Photohelic Switch/Gauge 0 to 15 inch

Dwyer 3015MRS Photohelic Switch/Gauge 0 to 15 inch

Series 3000MR/3000MRS Photohelic® Switch/Gage

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

Model	Description
3015MRS-15 inch	Pressure Switch/Gage,Range 0-15 inch, .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

Versatile Differential Pressure Monitoring

The 3015MRS Photohelic combines accurate low-pressure measurement and reliable control switching in a single robust device. Its diaphragm-based sensor and brass process connections make it ideal for monitoring clean air and non-corrosive gases. With two easily adjustable set points, it meets demanding industrial applications requiring swift and precise pressure control.

User-Friendly Panel Mount Design

Featuring a clear analog dial (4 inch viewable area) and intuitive external knobs for set point adjustments, installation and operation are straightforward. The gauge fits standard panel mounts and includes mounting hardware and an instruction manual, facilitating quick setup in control systems or monitoring panels.

FAQs of Dwyer 3015MRS Photohelic Switch/Gauge 0 to 15 inch:

Q: How is the set point adjusted on the Dwyer 3015MRS Photohelic Switch/Gauge?

A: The two SPDT snap switches feature front-accessible, external knobs, allowing users to easily adjust set points on the gauges face without disassembling the unit.

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

A: This model is optimized for measuring the pressure of low air and non-corrosive gases, making it unsuitable for corrosive fluids or liquids.

Q: When is the Photohelic 3015MRS most beneficial in an industrial setup?

A: It is ideal when both pressure measurement and automatic control switching are required, such as in air handling units, HVAC systems, and pollution control equipment.

Q: Where can the Dwyer 3015MRS be installed?

A: The gauge is designed for panel mounting and comes with necessary mounting hardware, making it suitable for control panels in factories, warehouses, and industrial facilities.

Q: What is the process for zero adjustment on this pressure gauge?

A: Zero adjustment is easily accomplished via an external screw, which can be accessed without opening the housing, ensuring quick recalibration in the field.

Q: How does the device ensure measurement accuracy and repeatability?

A: The 3015MRS delivers 2% full scale accuracy and 1% repeatability, using a diaphragm-based sensor and high-quality materials such as polycarbonate dials and aluminum pointers.

Q: What are the main benefits of using the Dwyer 3015MRS?

A: Benefits include precise differential pressure control, ease of setup and operation, long-term reliability in industrial environments, and dual switch outputs for versatile process automation.

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