Wall Mount Ultrasonic FlowMeter For Clean Liquids FDT-21W U Accuracy 1% U Repeatability 0.2% U Positive, Negative and Net Totalizer U 4-Line LCD Display U Clamp On Transducers U RS232 Output FDT-21W ultrasonic flowmeter is designed to measure the fluid velocity of liquid in a full/closed pipe. It is a measurement system which is both easy to install and use. The FDT-21W operates according to the difference in the transit time of flight measured, and determines the flow velocity by measuring the travel time of a pulse from one transducer to the next. Flow in the same direction takes less time to travel to the second transducer than does flow in the opposite direction. Electroacoustic transducers receive and emit brief ultrasonic pulses through the liquid of the pipe. Transducers are vertically placed at both sides of the measured pipe. Sensors are placed on the pipe and fastened by means of a clamp. The display will quickly show the flow velocity. The FDT-21W can be used for metallic, plastic and rubber tubes. FDT-21W inside view. E FDT-21W shown smaller than actual size. Specifications Accuracy: ±1% of reading >(0.2 m/s) 0.6 ft/s Repeatability: 0.2% Linearity: 0.5% Response Time: 0 to 999 seconds (user configured) Velocity: (±0.01 to 30 m/s) ±0.03 to 105 ft/s bi-directional Temperature Range: Standard: 0 to 70ºC (32 to 158ºF) With High Temp Transducers: 0 to 160ºC (32 to 320ºF) Pipe Size: DN 20 to 100 mm (0.75 to 4") standard [up to DN 6000 mm (236") with optional transducers] Transducer Frequency: 1 MHz Rate Units (User Configured): Meter, feet, cubic meter, cubic feet, USA gallon, oil barrel, USA liquid barrel, imperial liquid barrel, million USA gallons Totalizer: 7-digit totals for positive, negative and net flow E-1 Liquid Types: Most liquids including clean water, sea water, waste water, chemical liquids, oil, crude oil, alcohol, beer, and more Suspension Concentration: ≤20,000 ppm (may contain very small amounts of air bubbles) Pipe Material: All metals, most plastics and fiberglass Security: Programmable lock-out code Display: 4 x 16 english letters Power: 85 to 264 Vac Communications: RS232C (baud rate from 75 to 115,200 bps) Transducer Cable Length: 5 m (15') Data Logger: Built-in, stores over 2000 lines of data Totalizer/Calibration: 7-digit press-to-go for calibration Housing: ABS plastic with aluminum alloy protective carrying case Case: NEMA 4 (IP65) Dimensions: 100 H x 66 W x 20 mm D (3.9 x 2.6 x 0.8") Weight: 514 g (1.2 lb) Accessories included All models shown smaller than actual size. FDT-21W-TC tranducer clamps FDT-21W-TUBE shrink tubing FDT-21-S1 and FDT-21-S1H tranducers FDT-21W-SL terminal lugs FDT-21-GREASE-S1 and FDT-21-GREASE-S1H acoustic gel Alan wrench Parameters HS-TypeHM-TypeS1-TypeM1-Type L1-TypeS1H-Type M1H-Type 20 to 100DN 50 to 100DN 20 to 100DN 50 to 700DN 300 to 6000DN 20 to 100DN 50 to 700DN Pipe Size (mm) Pipe Size (inch) ³⁄₄ to 4 2 to 28 ³⁄₄ to 4 2 to 28 12 to 240 ³⁄₄ to 4 2 to 28 Special Material Aluminum alloy ABS high-temperature materials 1 MHz Frequency Calibrate with the main unit Calibration Magnetic Non-magnetic Magnetism 0 to 70°C (32 to 158°F) 0 to 160°C (32 to 320°F) Temperature NEMA 4 (IP65) Protection Class 60 x 45 x 45 80 x 70 x 55 90 x 85 x 24 90 x 82 x 29 Dimensions (mm) 200 x 25 x 25 280 x 40 x 40 45 x 30 x 30 Weight g (oz) 250 (8.8) 1080 (38) 75 (2.6) 250 (8.8) 650 (23) 94 (3.3) 150 (5.3) Fresh water, salt water, chemical liquids, oil, crude oil, alcohol, beer, etc. Liquid Types Suspension ≤20,000 ppm, may contain very small amount of air bubbles Concentration Pipe Material All metals, most plastics, fiberglass, etc. Dedicated Standard length 5 meter x 2, can be extended to 10 meter x 2 or 15 meter x 2 Shielded Transducer Cable To Order Visit omega.com/fdt21w for Pricing and Details Model No. FDT-21W Description Wall mount transit-time ultrasonic flowmeter (includes S1 and S1H transducers) Comes complete with small pipe standard and high temperature transducers (S1 and S1H), acoustic gel, tape measure, RS232 cable, transducer cable, tranducer clamps, alan wrench, terminal lugs, shrink tubing and operator’s manual. Accessories Model No. FDT-21-S1 FDT-21-S1H FDT-21-HS FDT-21-HM FDT-21-M1 FDT-21-M1H FDT-21-L1 FDT-21-GREASE-S1 FDT-21-GREASE-S1H Description Weight g (oz) Pipe Size mm (inch) Replacement small pipe standard transducer 75 (2.6) 20 to 100 (0.75 to 4) Replacement small pipe high temperature transducer 94 (3.3) 20 to 100 (0.75 to 4) Small pipe aluminum transducer 250 (8.8) 20 to 100 (0.75 to 4) Medium pipe aluminum transducer 1080 (38) 50 to 700 (2 to 28) Medium pipe standard transducer 250 (8.8) 50 to 700 (2 to 28) Medium pipe high temperature transducer 150 (5.3) 50 to 700 (2 to 28) Large pipe standard transducer 650 (23) 300 to 6000 (12 to 236) Replacement acoustic gel for standard transducers Replacement acoustic gel for high-temperature transducers Ordering Example: FDT-21W, wall mount transit-time ultrasonic flowmeter. E-2