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3G Electric
Dwyer Transmitter 645-4 - Measurement
DwyerMeasurement

Dwyer Transmitter 645-4

The Dwyer 645-4 is a pressure transmitter for industrial process monitoring, offering ±0.25% accuracy and IP65 rating. It handles 0–25 psid with 1/4 inch NPT female connection and 30–50 ms response time, fitting…

SKU 3G-CBM-02202

Brand
Dwyer
Item
Transmitter 645-4
Category
Measurement
UNSPSC
41112412 — Pressure gauge
Available to Order
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Technical specs
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Dwyer
housing
stainless steel/aluminium
accuracy
±0.25%
ip rating
IP65
connection
1/4 inch NPT female
pressure kpa
0-1.72
response time
30-50 ms
pressure range
0-25 psid
loop resistance
0-1000Ω

Technical Documents

(1)
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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer 645-4 is a pressure transmitter for industrial process monitoring, offering ±0.25% accuracy and IP65 rating. It handles 0–25 psid with 1/4 inch NPT female connection and 30–50 ms response time, fitting pneumatic and hydraulic control systems.

Frequently Asked Questions

Where can I source a Dwyer 645-4 pressure transmitter worldwide?

3G Electric is an authorized Dwyer distributor offering the 645-4 pressure transmitter for global delivery. Contact us for lead times and logistics support. We handle customs and international shipping to your facility.

What is the lead time for the Dwyer 645-4?

Lead time on request. 3G Electric sources the Dwyer 645-4 to order and arranges worldwide delivery, including customs documentation and freight coordination. Email or call for a specific delivery estimate.

What pressure range and accuracy does the Dwyer 645-4 offer?

The Dwyer 645-4 handles 0–25 psid (0–1.72 kPa) with ±0.25% accuracy. It features a 1/4 inch NPT female connection, IP65 rating, stainless steel/aluminium housing, and 30–50 ms response time for pneumatic and hydraulic systems.

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
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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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