Product overview
The TUF series ultrasonic flowmeter utilizes the principle of low voltage and multiple pulsation time difference, adopts the high-precision and ultra-stable differential transmission of double-balanced signals and differential receiving digital detection technology to measure the acoustic wave transmission time in both the downstream and counter-current directions, and calculates the flow rate according to the time difference.It has the characteristics of good stability, small zero drift, high measuring accuracy and high anti-interference of measuring range over wide.
When the ultrasonic wave velocity propagates in the liquid, the liquid flow will make a slight change in the propagation time. The variation of the propagation time is proportional to the liquid flow rate and zero flow rate. When the two transmitted gases emit and receive sound waves, the time required is exactly the same (the only technology that can actually measure zero flow rate).When the medium flows, the acoustic wave transmission time in the reverse direction is greater than that in the flow direction.Its relation conforms to the following expression:
V: Medium flow rate
θ: The angle between the velocity of sound and the direction of liquid flow
M:The number of times the velocity of sound propagates in a straight line through a liquid
D: Pipe inner diameter
Tup : Propagation time of sound velocity in the positive direction
Tdown : Propagation time of sound velocity in inverse direction
∆T: Tup-Tdown
Product features
■ High-accuracy survey
Line goodness is better than 1%, repeatability accuracy is better than 0.2%
■ Non-contact measurement
The flow measurement can be completed by adsorbing the magnetic ultrasonic flowmeter sensor to the outer wall of the pipe.
■ Large measuring range
Different types of sensors can be used to measure the flow of the DN15-DN6000mm pipe.
■ Support Chinese and English menus
Different versions of Flowmeter, can support Chinese or English menus, convenient and fast;
■ Charge power supply
Built-in large-flow Ni-MH rechargeable battery, can support the flowmeter to work continuously for more than 20 hours;
■ Built-in printer
Instant screen printing can be realized, and the measurement results of more than 20 items can be set ahead of time.
■ Built-in data recorder
The measurement results of up to 20 items can be uploaded to the computer or network communication.
Technical indicators
Table 1
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Project
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Performance parameter
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Degree of linearity
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1%
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Repetitiveness
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0.2%
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Accuracy
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±1% of the indicated value, flow rate > 0.2 m/s
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Response time
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0-999 seconds, user optional
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Velocity range
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±32m/s
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Measuring aperture
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15-6000mm
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Measurement unit
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Meters, feet, cubic meters, liters, cubic feet, American gallons, British gallons, oil drums, American barrels, British barrels, American gallons, American gallons, user-defined units
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Accumulator
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7 bit, negative, net accumulator
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Liquid type
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Any of various homogeneous liquids capable of transmitting sound waves
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Safety
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Set the value of the lock, change the data need to unlock
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Show
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4 × 8 Chinese or 4 × 16 English
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Communication Interface
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Rs-232, baud rate 75-57600, compatible with Fuji ultrasonic flowmeter, and compatible with other products as required by users
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Sensor
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Standard M1 with 4 other options
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Sensor cable
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The standard is 5 m × 2, and can be extended to 10 m × 2
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Power Supply
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Three AAA built-in Ni-H batteries, each fully charged for 12 hours a 12-hour AC 100-240 V adapter.
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Data logging
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Built-in data recorder, can record 2000 rows of data
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Manual accumulator
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7 bit, press the button to start the calibration
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Sheathing material
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Flame retardant ABS
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Shell size
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200×90×30mm
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Host weight
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500(1.2lbs)Including batteries
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Ultrasonic flowmeter classification
■Portable ultrasonic flowmeter
There are two kinds of portable hosts: portable ultrasonic flowmeter and portable ultrasonic flowmeter.
■Stationary ultrasonic flowmeter
The fixed host is divided into two types: fixed one type ultrasonic flowmeter and fixed split type ultrasonic flowmeter.
The fixed split type flowmeter is divided into wall-mounted type, disk-mounted type and explosion-proof type
