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DwyerLow Operating Pressure Differential Gauges

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

The Dwyer 3000MR Series 3003MR is a low operating pressure differential gauge with a back/single-side connection. It features a diaphragm sensor and a gauge accuracy of ±2%. This model has a 1/8 in NPT female…

SKU 3G-OTH-174204

Also listed as: 3003 MR · 3003-MR

Brand
Dwyer
Item
Pressure Switch/Gauge: Back/Single-Side, 1/8 in NPT Female, ±2% Gauge Accuracy
Category
Low Operating Pressure Differential Gauges
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Dwyer
Manufacturer Part Number
3003MR
Series
3000MR
Type
±2% Gauge Accuracy, 3000MR, 3003MR
NPT Female
1/8 in
Sensor Type
Diaphragm
Gauge Accuracy
±2%
Certificate of Calibration
Not Included

Technical Documents

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

Product Description

The Dwyer 3000MR Series 3003MR is a low operating pressure differential gauge with a back/single-side connection. It features a diaphragm sensor and a gauge accuracy of ±2%. This model has a 1/8 in NPT female connection and does not include a certificate of calibration.

Frequently Asked Questions

What is the Dwyer 3000MR Series 3003MR pressure switch/gauge used for?

The Dwyer 3000MR Series 3003MR is a low operating pressure differential gauge used to measure small pressure differences in HVAC, filtration, and industrial process systems. Its diaphragm sensor and ±2% accuracy make it suitable for monitoring air or compatible gas flows in cleanrooms, ductwork, and ventilation.

What are the specifications of the Dwyer 3003MR pressure gauge?

The Dwyer 3003MR has a diaphragm sensor, ±2% gauge accuracy, and a 1/8 in NPT female back/single-side connection. It is part of the 3000MR series and does not include a certificate of calibration. The manufacturer part number is 3003MR.

Where to buy the Dwyer 3003MR pressure gauge worldwide?

You can source the Dwyer 3003MR pressure gauge 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 3003MR differential gauge?

Mount the Dwyer 3003MR in a vertical position using the 1/8 in NPT female connection. Ensure pressure lines are clean and leak-free. Connect high-pressure side to the marked port and low-pressure side to the opposite port. Avoid over-torquing fittings to prevent diaphragm damage.

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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