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Dwyer 3000MRS Photohelic Switch/Gauge 0 to 500 Pa

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Dwyer 3000MRS Photohelic Switch/Gauge 0 to 500 Pa

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Dwyer 3000MRS Photohelic Switch/Gauge 0 to 500 Pa Specification

Sensor Type
Differential Pressure

Grade
Industrial

Outer Size
110 mm Approx

Seal Material
Silicone

Bourdon Tube
Not Present

Display
Analog and Setpoint Switch

Thread
1/8 NPT Female

Material
Die-Cast Aluminum Case, Acrylic Lens

Dial Material
Acrylic

Pointer Material
Aluminum

Processing Type
Molded

Diameter
Approximately 4-1/2 (114 mm)

Glass Size
110 mm diameter

Mount Type
Flush & Surface Mount

Scale Range
0 to 500 Pa

Accuracy
2% of full scale

Finishing
Matte Finish

Measure Pressure Of
Air and non-combustible gases

Accessories
Mounting Hardware & Instruction Manual

Dwyer 3000MRS Photohelic Switch/Gauge 0 to 500 Pa Trade Information

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

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

Main Domestic Market
All India

About Dwyer 3000MRS Photohelic Switch/Gauge 0 to 500 Pa

Dwyer 3000MRS Photohelic Switch/Gauge 0 to 500 Pa

Series 3000MR/3000MRS Photohelic® Switch/Gage

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

Model	Description
3000MRS-500 Pa	Pressure Switch/Gage,Range 0-500 Pa, 10.0 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

Exceptional Measurement Range and Accuracy

The Dwyer 3000MRS Photohelic Switch/Gauge covers differential pressures from 0 to 500 Pa with a fine resolution of 3 Pa graduations. Thanks to its 2% full-scale accuracy and 1% repeatability, it ensures reliable and consistent monitoring critical for demanding industrial applications.

User-Friendly Installation and Adjustable Setpoints

Mounting options include both flush and surface configurations, catering to diverse installation needs. The front-accessible setpoint adjustment makes on-site calibration straightforward. Accessories like mounting hardware and a detailed manual further simplify setup and daily operation.

Rugged Construction for Industrial Environments

Constructed from die-cast aluminum with a matte finish and an acrylic lens, the 3000MRS withstands harsh industrial conditions. Its IP52 (NEMA 2) enclosure ensures adequate dust and moisture protection, making it suitable for routine operations in a range of manufacturing facilities.

FAQs of Dwyer 3000MRS Photohelic Switch/Gauge 0 to 500 Pa:

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

A: The Dwyer 3000MRS can be mounted using the included hardware for either flush or surface installation. Refer to the provided instruction manual for step-by-step guidance on securing the die-cast aluminum case and connecting the 1/8 NPT female ports.

Q: What is the main benefit of using the 3000MRS model in industrial settings?

A: This gauge offers versatile differential pressure monitoring and control with an analog display and setpoint switch, supporting immediate relay output. Its robust accuracy, repeatability, and durable housing make it reliable for industrial air and non-combustible gas applications.

Q: When should the setpoint switches be adjusted, and how is this achieved?

A: Setpoint adjustments are typically performed during initial installation or whenever process parameters change. The switches can be accessed from the gauges front panel, allowing quick and precise adjustment without needing to dismantle the device.

Q: Where can the 3000MRS be deployed effectively?

A: The Dwyer 3000MRS is suitable for use in factories, clean rooms, HVAC systems, or any environment requiring differential pressure measurement of air or non-combustible gases. Its IP52 rating and operating temperature range make it adaptable to various industrial locations.

Q: What type of power supply does the gauge require?

A: Depending on configuration, the Dwyer 3000MRS operates with either 120 VAC or 240 VAC power sources, with a relay output rated at 5A for use with standard industrial electrical systems.

Q: How should I maintain and clean the 3000MRS Photohelic Gauge?

A: Maintain the device by keeping it free from dust and ensuring connection ports remain unclogged. Clean the acrylic lens with a soft cloth. Avoid harsh cleaners that could damage the matte finish or acrylic components.

Q: Can the Dwyer 3000MRS measure combustible or hazardous gases?

A: No, the 3000MRS is specifically designed for air and non-combustible gases only. Using it with other media may compromise safety and measurement accuracy.

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