Dwyer 3100MRS Photohelic,Switch/Gauge 0 to 100 in W.C

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Dwyer 3100MRS Photohelic,Switch/Gauge 0 to 100 in W.C Specification

Display
Analog Mechanical Dial

Grade
Industrial

Thread
1/8 NPT Female

Outer Size
Front flange: 152 mm (6) diameter

Seal Material
Silicone rubber

Sensor Type
Photohelic Differential Pressure Sensor

Material
Die-cast aluminum case

Dial Material
Polycarbonate

Pointer Material
Aluminum

Processing Type
OEM Calibrated

Diameter
152 mm (6)

Glass Size
5.75 diameter

Mount Type
Panel mount

Scale Range
0 to 100 in W.C. (Inches of Water Column)

Accuracy
2% of full scale

Finishing
Textured Gray

Measure Pressure Of
Air and Compatible Gases

Accessories
Mounting hardware and instruction manual

Dwyer 3100MRS Photohelic,Switch/Gauge 0 to 100 in W.C Trade Information

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

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

Main Domestic Market
All India

About Dwyer 3100MRS Photohelic,Switch/Gauge 0 to 100 in W.C

Dwyer 3100MRS Photohelic,Switch/Gauge 0 to 100 in W.C

Pressure switch/gage, range 0-100" w.c., 2.0 minor divisions.

Model: 3100MRS

Combine the functions of a precise, highly repeatable differential pressure switch with a large easy-to-read analog pressure gauge employing the durable, time-proven Magnehelic gauge design. Versatile electromechanical relays with gold over silver contacts - ideal for dry circuits.

Dwyer 3100MRS Photohelic, Switch/Gauge 0 to 100 in W.C.

Using solid state technology, there Series 3000MR and 3000MRS Photohelic switch/gauges 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" (122 mm) hole or surface mounted with hardware supplied. 3000MR models employ versatile electromechanical relays with gold over silver contacts - ideal for dry circuits. For applications requiring high cycle rates, choose 3000MRS models with SPST (N.O.) solid state relays. All models provide both low and high limit control and include 18-inch (45 cm) cable assemblies for electrical connections.

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 (1.725 bar).

Precision Monitoring and Switching

The Dwyer 3100MRS Photohelic combines the functions of a pressure gauge and a relay switch in a single unit. Featuring two user-adjustable set-points and 2% full scale accuracy, it enables precise monitoring and automatic control of differential air pressures. Its photohelic sensor technology ensures reliable and responsive management for industrial applications.

Robust Construction for Industrial Use

Housed in a die-cast aluminum case with a textured gray finish, the 3100MRS is built to withstand demanding environments. IP54 and NEMA 2 enclosure ratings protect the internal components, while the high-quality polycarbonate dial and silicone seals offer durability and clarity for easy reading. The device is ideal for OEMs, suppliers, and wholesalers in industries across India.

User-Friendly Installation and Maintenance

This gauge is designed for straightforward panel mounting, with included hardware and a comprehensive instruction manual. Vertical orientation is preferred for optimal performance. With minimal wiring and no external power needed for the gauge, installation and maintenance are quick and efficient, making it a hassle-free choice for both retrofit and new projects.

FAQs of Dwyer 3100MRS Photohelic,Switch/Gauge 0 to 100 in W.C:

Q: How do I install the Dwyer 3100MRS Photohelic switch/gauge?

A: To install the Dwyer 3100MRS Photohelic, use the provided mounting hardware and secure it vertically onto a panel. Connect the 1/8 NPT female threads for air or compatible gases, and wire the SPDT relay switches as per the instruction manual. No external power supply is needed for the gauge function.

Q: What applications benefit most from using the 3100MRS Photohelic?

A: The 3100MRS Photohelic is ideal for monitoring and controlling differential pressure in HVAC systems, air handlers, dust collection units, and other industrial air or gas processes where precise, automated switching is essential.

Q: When should I adjust the relay set-points on the gauge?

A: Adjust the two SPDT relay set-points whenever you need to change the pressure thresholds for activating alarms, fans, or other control devices. The set-points can be tuned at any time during operation to respond to process requirements or safety protocols.

Q: Where can the Dwyer 3100MRS be mounted for optimal performance?

A: For best results, the 3100MRS should be panel-mounted in a vertical orientation within the equipment or control room. Its IP54 (front) and NEMA 2 ratings make it suitable for indoor industrial environments where moderate protection against dust and water is needed.

Q: What is the process for calibrating the 3100MRS, and does it come pre-calibrated?

A: The 3100MRS Photohelic is OEM calibrated from the manufacturer and typically does not require calibration out of the box. If recalibration is necessary (after routine maintenance or repairs), follow the detailed steps in the instruction manual to ensure 2% accuracy of full scale.

Q: How does the instantaneous relay response of this gauge benefit my application?

A: The electromechanical relay in the 3100MRS provides instantaneous switching, ensuring immediate response to pressure changes. This feature minimizes delay and enhances protection or control in rapidly changing process conditions.

Q: What ongoing maintenance is required for the Dwyer 3100MRS?

A: Routine maintenance includes visual inspection of the gauge face, confirming tight connections, occasional cleaning of the dial cover, and checking for leaks in the pressure connections. The robust construction minimizes the need for frequent servicing.

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