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Dwyer 3010MRS Photohelic Switch/Gauge 0 to 10 inch

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Dwyer 3010MRS Photohelic Switch/Gauge 0 to 10 inch

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Dwyer 3010MRS Photohelic Switch/Gauge 0 to 10 inch Specification

Outer Size
120 mm (approx)

Sensor Type
Photohelic Differential Pressure Switch/Gauge

Grade
Industrial

Thread
1/8 female NPT high and low pressure connections

Seal Material
Silicone rubber

Display
Analog

Material
Die-cast aluminum case; Polycarbonate front cover

Dial Material
Aluminum, white background with black and red markings

Pointer Material
Black anodized aluminum

Processing Type
Precision engineered

Diameter
Standard 4-inch dial (approx 101 mm)

Glass Size
Approx. 4 inch

Mount Type
Flush or Surface Mount

Scale Range
0 to 10 inch (inches of water column)

Accuracy
2% of full scale

Finishing
Epoxy-coated die-cast aluminum housing

Measure Pressure Of
Air and compatible non-combustible gases

Accessories
Mounting hardware; Instruction manual

Number of Switches
2 adjustable set points

Panel Cutout Dimensions
145 mm diameter

Weight
1.5 kg

Enclosure Rating
NEMA 2 (IP40)

Maximum Pressure
25 psig

Response Time
Instantaneous switch operation

Electrical Rating
5A @ 120/240 VAC

Power Supply
120/240 VAC

Switch Type
DPDT relay contact

Temperature Range
20F to 120F (-6.7C to 48.9C)

Dwyer 3010MRS Photohelic Switch/Gauge 0 to 10 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 3010MRS Photohelic Switch/Gauge 0 to 10 inch

Dwyer 3010MRS Photohelic Switch/Gauge 0 to 10 inch

Series 3000MR/3000MRS Photohelic® Switch/Gage

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

Model	Description
3010MRS-10 inch	Pressure Switch/Gage,Range 0-10 inch, .20 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 Dwyer 3010MRS Photohelic Switch/Gauge delivers accurate measurement and instantaneous switching of air and compatible non-combustible gases. Its dual adjustable set points and DPDT relay outputs allow for custom high/low threshold control, making it suitable for various industrial applications.

Durable Construction and Reliable Performance

Designed with a die-cast aluminum case and epoxy coating, as well as a polycarbonate cover, the gauge resists corrosion and physical impacts. Precise engineering ensures stability, while the NEMA 2 (IP40) rating provides dependable protection in demanding environments.

Simple Installation and Flexible Mounting

Installation is streamlined with included hardware, allowing for both flush and surface mounting to suit different panel requirements. Standard 1/8" NPT pressure connections make integration effortless, and its panel cutout and overall size easily fit most industrial setups.

FAQs of Dwyer 3010MRS Photohelic Switch/Gauge 0 to 10 inch:

Q: How does the Dwyer 3010MRS Photohelic Switch/Gauge control pressure in industrial applications?

A: The Dwyer 3010MRS combines an analog gauge and two adjustable set-point switches, allowing it to measure differential air pressure and trigger DPDT relay outputs when pressure crosses preset thresholdsautomating equipment based on real-time air pressure levels.

Q: What gases can I measure with this Photohelic Switch/Gauge?

A: This device is engineered specifically for air and compatible non-combustible gases, ensuring accurate measurement and safe operation in ventilating, air conditioning, and industrial process control.

Q: When should I use the dual switch set points feature?

A: The dual switch set points are ideal when you need to monitor both upper and lower differential pressure limits, enabling automatic control of fans, alarms, or other systems when the set pressure is reached or exceeded.

Q: Where is the Dwyer 3010MRS typically installed?

A: Thanks to its flush and surface mounting options, the unit fits conveniently in control panels, HVAC systems, and machine enclosures. The 145 mm cutout and standard 4-inch dial size make it adaptable to new or retrofit installations.

Q: What is the process for setting up this switch/gauge?

A: Setup involves mounting the device using the supplied hardware, connecting the high and low pressure ports via 1/8" NPT threads, wiring the DPDT relay contacts to your control system, and adjusting the set points with the dial for desired activation thresholds.

Q: How can the Dwyer 3010MRS benefit my facility?

A: Using the Dwyer 3010MRS enhances operational efficiency by providing accurate pressure readings and acting as an automated switch, reducing manual intervention and improving safety and equipment protection in industrial settings.

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