Ultrasonic Liquid Flow Sensor TL1000KA used inside ultrasonic flow meter device that measures the velocity of a fluid with ultrasound to calculate volume flow.
Using ultrasonic transducers, the flow meter can measure the average velocity along the path of an emitted beam of ultrasound, by averaging the difference in measured transit time between the pulses of ultrasound propagating into and against the direction of the flow or by measuring the frequency shift from the Doppler effect.
Ultrasonic flow meters are affected by the acoustic properties of the fluid and can be impacted by temperature, density, viscosity and suspended particulates depending on the exact flow meter. They vary greatly in purchase price but are often inexpensive to use and maintain because they do not use moving parts, unlike mechanical flow meters.
1 MHz Ultrasonic transducer for Flow Meter
Ultrasonic Liquid Flow Sensor TL1000KA Technical parameters:
| Model | TL1000KA |
|---|---|
| Working frequency(kHz) | 0.98MHZ ± 2% |
| Bandwidth | 25% |
| overall sensitivity 0 dB=3 Vp-p; cycle:8; distance:8cm (transmitter and receiver) | -32dB min |
| Beam Angle(-3dB full angle) | 6° |
| Electrostatic capacity | 1200PF ± 15% |
| Minimal parallel impedance | 150Ω ± 30% |
| Maximum operating voltage (Pulse Duty cycle ratio 2%) | ＜200V |
| Operating temperature | 4～95℃ |
| Maxim pressure | 1.6MPa |
| The material of the housing | PPS |
| Protection class | IP68 |
The tests were conducted in 25 ° environment .
Total resistance – phase curve
Directivity curves
Sensitivity test:
voltage:3Vp-p; cycle:8; distance:87mm