Is the Dwyer Transmitter 645-1 available from 3G Electric?

Yes — 3G Electric supplies genuine Dwyer products with in-stock availability on common SKUs and worldwide shipping.

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Click "Request a Quote" on this page or add the product to your RFQ cart. Our engineers will respond within 24 hours with pricing, lead times, and technical recommendations.

Does 3G Electric provide technical support for measurement?

Yes, our team of experienced engineers provides full technical support including product selection, installation guidance, commissioning, and after-sales service for all measurement we distribute.

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DwyerMeasurement

Dwyer Transmitter 645-1

SKU 3G-CBM-02199

Also listed as: DWY 26004 · DWY-26004

Brand

Dwyer

Item

Transmitter 645-1

Technical Specifications

Dwyer

type

differential pressure transmitter for liquids 

model

645-1 

range

0–2 psid (0–0.14 bar) 

accuracy

±0.25 % 

manifold

3-valve, brass 

connection

1/4"-18 female NPT 

enclosure rating

IP65 

response time ms

30–50 

enclosure material

stainless steel/aluminium 

loop resistance ohm

0–1000 

View Full Spec Sheet

Technical Documents

(1)

Technical Document 1

PDF Document

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Dwyer Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer Transmitter 645-1 is a differential pressure transmitter for liquids, offering a 0–2 psid (0–0.14 bar) measurement range with ±0.25 % accuracy. It features a 3-valve brass manifold, 1/4"-18 female NPT connection, stainless steel/aluminium IP65 enclosure, 30–50 ms response time, and 0–1000 ohm loop resistance. 3G Electric supplies this unit to Singapore and Southeast Asia industrial operations, handling full delivery and documentation.

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 measurement. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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