Dwyer Air Velocity Transmitter: 4 mA to 20 mA, 32°F to 140°F, 641-12-LED, 250 fpm to 15,000 fpm
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
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
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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.
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 DwyerDwyer 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.
