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FDT-21-L1 Scheda tecnica(PDF) 1 Page - Fairchild Semiconductor

Il numero della parte FDT-21-L1
Spiegazioni elettronici  Wall Mount Ultrasonic FlowMeter For Clean Liquids
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Produttore elettronici  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FDT-21-L1 Scheda tecnica(HTML) 1 Page - Fairchild Semiconductor

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E-1
E
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.
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
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)
E
FDT-21W shown smaller than actual size.
FDT-21W inside view.


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