Air velocity transmitters Air velocity Category/type
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![Dwyer 641-6 Air velocity transmitter | 6" (152.4 mm) probe length. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/641_family_1000x1000_7ab4d4d7-4063-44bc-bd7e-347998443cfd_medium.jpg?v=1719997950)
641-6 | Air velocity transmitter | 6" (152.4 mm) probe length. | Dwyer
Brand: Dwyer
SKU: 641-6
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![Dwyer 641-12 Air velocity transmitter | 12" (304.8 mm) probe length. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/641_family_1000x1000_bbc6a79c-9298-4336-8bf0-32b1b0668566_medium.jpg?v=1719997934)
641-12 | Air velocity transmitter | 12" (304.8 mm) probe length. | Dwyer
Brand: Dwyer
SKU: 641-12
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![Dwyer 641-30 Air velocity transmitter | 30" (762 mm) probe length. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/641_family_1000x1000_12170a9e-7375-4cef-8498-443662e2cb45_medium.jpg?v=1719997934)
641-30 | Air velocity transmitter | 30" (762 mm) probe length. | Dwyer
Brand: Dwyer
SKU: 641-30
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![Dwyer 641-30-LED Air velocity transmitter | 30" (762 mm) probe length | with LED display. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/641_family_1000x1000_8007faee-a03f-4261-96c3-91d7e993bdac_medium.jpg?v=1719997929)
641-30-LED | Air velocity transmitter | 30" (762 mm) probe length | with LED display. | Dwyer
Brand: Dwyer
SKU: 641-30-LED
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![Dwyer 641-36-LED Air velocity transmitter | 36" (914 mm) probe length | with LED display. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/641_family_1000x1000_e7a580bc-c29c-49ad-bd02-1900938a5152_medium.jpg?v=1719997924)
641-36-LED | Air velocity transmitter | 36" (914 mm) probe length | with LED display. | Dwyer
Brand: Dwyer
SKU: 641-36-LED
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