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Dwyer 641-12-LED Air Velocity Transmitter, 250-15000 fpm, LED Display - Air Velocity Transmitters
DwyerAir Velocity Transmitters

Dwyer 641-12-LED Air Velocity Transmitter, 250-15000 fpm, LED Display

The DWYER Air Velocity Transmitter (model 641-12-LED) is an air velocity transmitter with a 4 mA to 20 mA output, an LED display, and a measurement range of 250 fpm to 15,000 fpm. It operates within a temperature…

SKU 3G-OTH-168001

Also listed as: 64112LED · 641 12 LED

Brand
Dwyer
Item
641-12-LED Air Velocity Transmitter, 250-15000 fpm, LED Display
Part Number
641-12-LED
Category
Air Velocity Transmitters
Available to Order
Also known as:641-12-LEDDwyer
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Dwyer
Manufacturer Part Number
641-12-LED
Type
32°F to 140°F, 641-12-LED, 250 fpm to 15,000 fpm, LED
Air Velocity Accuracy
+/-3% (32 to 122 °F)
Calibration Certificate
Not Included

Technical Documents

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

Product Description

The DWYER Air Velocity Transmitter (model 641-12-LED) is an air velocity transmitter with a 4 mA to 20 mA output, an LED display, and a measurement range of 250 fpm to 15,000 fpm. It operates within a temperature range of 32°F to 140°F and offers an air velocity accuracy of +/-3% from 32 to 122 °F. A calibration certificate is not included with this unit.

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 641-12-LED air velocity transmitter used for?

The Dwyer 641-12-LED air velocity transmitter measures air flow in HVAC ducts, fume hoods, and cleanrooms. It outputs a 4 mA to 20 mA signal and displays readings on its LED screen, covering 250 fpm to 15,000 fpm for industrial ventilation monitoring.

What are the specifications of the Dwyer 641-12-LED air velocity transmitter?

The Dwyer 641-12-LED has an air velocity accuracy of +/-3% from 32°F to 122°F, operates from 32°F to 140°F, and measures 250 fpm to 15,000 fpm. It provides a 4 mA to 20 mA output with an LED display. A calibration certificate is not included.

Where to buy the Dwyer 641-12-LED air velocity transmitter worldwide?

3G Electric supplies the Dwyer 641-12-LED air velocity transmitter worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to install the Dwyer 641-12-LED air velocity transmitter?

Mount the Dwyer 641-12-LED in a duct or plenum with the sensing element perpendicular to airflow. Wire the 4 mA to 20 mA output to your controller per Dwyer's manual. Ensure ambient temperature stays between 32°F and 140°F for accurate readings.

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

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This air velocity transmitter measures air flow from 250 fpm to 15,000 fpm with an accuracy of +/-3% from 32°F to 122°F. It operates within a temperature range of 32°F to 140°F and provides a 4 mA to 20 mA output signal for monitoring and control in HVAC, ventilation, and industrial process systems. Calibration certificate not included
Dwyer
This air velocity transmitter measures air flow from 250 fpm to 15,000 fpm with an accuracy of +/-3% from 32°F to 122°F. It operates within a temperature range of 32°F to 140°F and provides a 4 mA to 20 mA output signal for monitoring and control in HVAC, ventilation, and industrial process systems. Calibration certificate not included
Air velocity transmitter with 4 mA to 20 mA output, measuring 1,000 fpm to 4,000 fpm with ±3% accuracy. Features an LCD display and BACnet communication protocol. Maximum operating temperature 122°F. Suitable for HVAC, cleanroom, and industrial ventilation airflow monitoring
Dwyer
Air velocity transmitter with 4 mA to 20 mA output, measuring 1,000 fpm to 4,000 fpm with ±3% accuracy. Features an LCD display and BACnet communication protocol. Maximum operating temperature 122°F. Suitable for HVAC, cleanroom, and industrial ventilation airflow monitoring

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