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Dwyer Photohelic Switch: Back/Single-Side, 1/8 in NPT Female, ±2% Gauge Accuracy - Low Operating Pressure Differential Gauges
DwyerLow Operating Pressure Differential Gauges

Dwyer Photohelic Switch: Back/Single-Side, 1/8 in NPT Female, ±2% Gauge Accuracy

The Dwyer Photohelic Switch: Back/Single-Side is a low operating pressure differential gauge from the 3000MR Series, featuring a diaphragm sensor and a 4-inch dial. It offers a gauge accuracy of ±2% and connects via…

SKU 3G-OTH-174123

Brand
Dwyer
Item
Photohelic Switch: Back/Single-Side, 1/8 in NPT Female, ±2% Gauge Accuracy
Category
Low Operating Pressure Differential Gauges
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Technical Specifications

Dwyer
Manufacturer Part Number
3002MR
Series
3000MR
Type
±2% Gauge Accuracy, 3000MR
Dial
4 in
NPT Female
1/8 in
Sensor Type
Diaphragm
Gauge Accuracy
±2%
Certificate of Calibration
Not Included
View Full Spec Sheet

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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer Photohelic Switch: Back/Single-Side is a low operating pressure differential gauge from the 3000MR Series, featuring a diaphragm sensor and a 4-inch dial. It offers a gauge accuracy of ±2% and connects via a 1/8 in NPT Female port. This model, with manufacturer part number 3002MR, does not include a certificate of calibration.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Dwyer Photohelic Switch 3002MR used for?

The Dwyer Photohelic Switch 3002MR is a low operating pressure differential gauge used to measure and control pressure differences in HVAC, cleanroom, and industrial process applications. It combines a gauge and switch in one unit, providing visual indication and electrical control at set points.

What are the specifications of the Dwyer Photohelic Switch 3002MR?

The Dwyer Photohelic Switch 3002MR is from the 3000MR Series with a diaphragm sensor, ±2% gauge accuracy, and a 4-inch dial. It has a 1/8 in NPT Female connection and does not include a certificate of calibration. The manufacturer part number is 3002MR.

Where to buy the Dwyer Photohelic Switch 3002MR worldwide?

You can source the Dwyer Photohelic Switch 3002MR through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install the Dwyer Photohelic Switch 3002MR?

Install the Dwyer Photohelic Switch 3002MR by connecting the 1/8 in NPT Female port to the pressure source using compatible fittings. Mount the unit in a vibration-free location, wire the switch contacts per the diagram, and verify zero calibration before use. Follow Dwyer's generic installation guidelines.

Used in

Common applications for Dwyer
Combustion air-filter monitoring — Magnehelic Series 2000 on burner air-intake filter banks
Clean-room and pharmaceutical pressurisation — Magnehelic / Capsuhelic differential-pressure gauges
HVAC fan-discharge static pressure — Mark II inclined-vertical manometers on AHU test points
Filter-blockage alarms — Photohelic Series 3000 combined gauge/switch on air-handling units
BMS-integrated pressure monitoring — Digihelic DH3 with 4–20 mA output for building management

Dwyer Products

3G Electric supplies Dwyer low operating pressure differential gauges. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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