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641-30-LED
Air velocity transmitter, 30" (762 mm) probe length, with LED display.
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Product Specs
<< See all Product Models| Brand |
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| Accuracy | ± 3 % |
| Accuracy Detail | 3% FS process gas: 32 to 122°F (0 to 50°C); 4% FS process gas: -40 to 32°F and 122 to 212°F |
| Air Velocity, Max | 15000 FPM |
| Air Velocity, Min | 250 FPM |
| Display Note | 4-1/2 digit 1/2˝ Red LED |
| Display Resolution | 1 FPM, 0.01 MPS (10 FPM @ 10,000 and 15,000 FPM ranges) |
| Display Type | LED |
| Electrical Connection | Screw Terminal |
| Electrical Output | 4 to 20 mA |
| Filter | 0.5 to 15 s (Selectable) |
| GrossWeightValue | 0.73 |
| Loop Resistance | 600 Ω max |
| Mounting Orientation | None |
| Number of Digits | 4.5 |
| Number of Wires | 4 |
| Operating Temperature, Max | 140 °F |
| Operating Temperature, Min | 32 °F |
| Output Detail | 4 to 20 mA, isolated 24 V source, 3 or 4-wire connection |
| Power Consumption | 300 mA |
| Pressure Limits | Up to 100 psi |
| Probe Length | 30 in |
| Process Connection Size | 1/2 in |
| Process Connection Type | NPT Male |
| Process Temperature, Max | 212 °F |
| Process Temperature, Min | -40 °F |
| Relative Humidity | Non-Condensing |
| Response Time | 1.5 s to 95% |
| Response Time Note | Flow: 1.5 s to 95% of final value (output filter set to minimum) |
| Series ID | Series-641 |
| Supply Power Note | 12 to 35 Vdc, 10 to16 Vac. 1.5 A rating required on supply due to initial power surge drawn by transmitter |
| Supply Power Type | AC/DC |
| Supply Voltage | 10 to 16 Vac, 12 to 35 Vdc |
| Weight | 13.3 oz |
| Country of Origin | United States |
| See All Specs | |
PDFs & Manuals
Drawings
Accessories
Mounting gland. Versatile adapter slips on any Series 160, 5/16 in standard pitot tube made after Dec. 1990.
$44.50 / each
24 In Stock
Show Ratings & Reviews
Rated 5 out of
5
by
Anonymous from
5 Stars!
We’ve been very pleased with the Dwyer Air Velocity Transmitter. The built-in LED display makes it easy to monitor readings quickly and accurately. Installation was straightforward, and the unit has performed reliably. Overall, a quality product that delivers good performance and is easy to use. We would definitely recommend it
Date published: 2026-10-07
Rated 5 out of
5
by
Angela C from
Great Product
Great Product in current application and always fast shipping
Date published: 2025-10-08