Ultrasonic Flow Meter Kit

€ 1 236,10 excl. VAT


Product code

can be ordered Watch availability - date of dispatch to be specified

Can be used for metallic, plastic and rubber tubes. Easy to install and use. Accuracy 1%, repeatability 0.2%. Pipe size from DN 20 to DN 6000 (with optional transducers). Positive, Negative and Net Totalizer. 4-Line LCD Display. RS232C communication. More

Ultrasonic flowmeter FDT-21B is designed to measure the fluid velocity of liquid in a full/closed pipe. It is a handheld measurement system which is both easy to install and use. The FDT-21B 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-21B can be used for metallic, plastic and rubber tubes.


Accuracy: ±1% of reading >0.2m/s
Repeatability: 0.2%
Linearity: 0.5%
Response Time: 0 to 999 seconds (user configured)
Velocity: ±0.01 to 30 m/s bi-directional
Temperature Range:
    Standard: 0 to 70°C
    With High Temp Transducers: 0 to 160°C
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, US gallon, liter, oil barrel, US liquid barrel, imperial liquid barrel, million US gallons
Totalizer: 7-digit totals for positive, negative and net flow
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
Communications: RS232C (baud rate from 75 to 115,200 bps)
Transducer Cable Length: 5 m
Power: built-in accu (included) with 90 to 230 Vac charger, fully charged lasts over 12 hrs.
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: IP65 (NEMA-4)
Dimensions: 100 H x 66 W x 20 mm D
Weight: 514 g

NOTE: Additional Standard and High Temperature Transducer Sets are available. Contact Us.

Complete informations can be found in the spec sheet (PDF), see the "Download" section.