Ultra Sonic Flow Meter

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The TDS-100 ultrasonic flow meter is designed to measure the fluid velocity of liquid within a
closed conduit. The transducers are a non-contacting, clamp-on type, which will provide benefits
of non-fouling operation and easy installation.
The TDS-100 transit time flow meter utilizes two transducers that function as both ultrasonic
transmitters and receivers. The transducers are clamped on the outside of a closed pipe at a specific
distance from each other. The transducers can be mounted in V-method where the sound
transverses the pipe twice, or W-method where the sound transverses the pipe four times, or in
Z-method where the transducers are mounted on opposite sides of the pipe and the sound crosses
the pipe once. This selection of the mounting method depends on pipe and liquid characteristics.
The flow meter operates by alternately transmitting and receiving a frequency modulated burst of
sound energy between the two transducers and measuring the transit time that it takes for sound to
travel between the two transducers. The difference in the transit time measured is directly and
exactly related to the velocity of the liquid in the pipe.

2. Starting Measurement
The new instruments are comprised of measuring main board,function extending module,and display operation
terminal etc.users can choose the right configuration according to own requirements.the easiest configuration
only needs a measuring main board and a pair of transducers to complete the function of flow measurement.
§2.1 wall mounted fixed style ultrasonic flowmeter
transducers include clamp-on type,insertion type,in-line type.these series products have gained the best sales
volume in our company,and are the favorable products in future,applied to measure on-line differents liquids in
industry spot.
Technology features:
1:operating power :AC 85—264V or isolation DC 8-36VDC
2:repeatability:better than 0.2%.accuracy:better than 1%
3:signal output :one channel standard isolation RS485 output
One channel isolation 4-20mA or 0-20mA active output.
One channel OCT output(programmed between the pulse width(6-1000ms),default before leaving
factory (200ms))
One channel isolation relay output,with positive,negative,net accumulation pulses and different
alarm signals.
4:signal input: two channel three wire system PT100 platinum resistor input loop,to make heat meter has the
TDS-100F MANUAL
5
function of displaying heat quantity.
Three channel 4-20mA input optional,accuracy:0.1%,has the ability to input the signals of pressure,
liquid level, temperature and so on.
5::display:2*20 backlit LCD(Chinese and English optional)
6:operating:4*4 tactile keypad
7:other functions:automatic memory the positive,negative,net totaliser flow rate and heat quantity of the last 512
days,128 months,10years
Automatic memory the time of power on/off and flow rate of the last 30 times, realize to replenish
by hand or automatically,read the datas through Modbus communication protocol.
8:protection level:mainframe:IP65, transducer:IP:68
9:transducer: clamp-on type,insertion type,in-line type.
Optional accessory:
1:clamp-on transducer(standard S1 style,standard M1 style,high temperature S1H,high temperature M1H)
2:insertion transducer(standard insertion B,cement insertion B)
3:in-line type transducer(hygienic style, Π style,standard style)
4: special shielded twisted pair cable
5:strap(applied with installation of transducers on cast iron,GRP,PVC,etc. that can not be welded directly)

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