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The Dwyer 641RM Air Velocity Transmitter features the same highly accurate heated mass flow sensor as the The units 6? cable which connects the sensing probe with the electronic enclosure allows the enclosure (1) Instruction manual Shop for the Dwyer 641 Air Velocity Transmitter and other Air Velocity Meters / Anemometers at Instrumart. Usually ships in 4-6 business days [?] Ranges to 15,000 FPM or 75 MPS; Optional bright LED display; Easy push button set- Dwyer 641 Air Velocity Transmitter Manual PDF (312 KB) · All possible part numbers The unit's 6 ft. cable which connects the sensing probe with the electronic enclosure allows the enclosure to be mounted where it The optional LED produces a complete, compact solution for local indication of air flow. The Dwyer 641RM Series is the ideal instrument for monitoring air flow. 641RM Instruction Manual Dwyer Series 641 Air Velocity Transmitter, 6" Probe: Science Lab The 4-1/2 digit red LED has resolution of 0.01 m/s, 1 fpm (10 fpm at 10,000 and 15,000 fpmSpecifications - Installation and Operating Instructions DWYER INSTRUMENTS, INC. Phone: LED display, the Series 641 AVT will provide a highly visible. Optional bright LED display easily provides local indication. • Easy push SERIES. 641 - Air velocity transmitter. PROBE LENGTH. -6 - 6?. -12 - 12?. -18 - 18?. The Dwyer® Series 641 has an optional LED display for local indication of air flow. . Accuracy: 400 to 9000 FPM (45.7 m/s); ±2% FS, ±3% FS for 6? and 48? length models. alarm also warns of low flow and requires manual resetting. Dwyer 641 Series Air Velocity Transmitters. Downloads: datasheet manual . (457.2 mm) ??; Probe Length: 24" (609.6 mm) ??; Probe Length: 6" (152.4 mm) ?? Dwyer 641-12-LED Air Velocity Transmitter with 12" probe & LED display. Dwyer 641-6-LED Air Velocity Transmitter with 6" probe & LED display. Great savings PLUS Free Shipping when you order Downloads: datasheet manual