1MHz Piezoelectric Ultrasonic Transducers for Ultrasonic Flowmeter
Product Description
1MHz Piezoelectric Ultrasonic Transducers for Ultrasonic Flowmeter
1.The main purpose:
Used for water flow measurement
Accurate measurement with liquid at short distances
2.Features:
Small size, easy to install
High sensitivity, small residual vibration, broadband, test accuracy
long working life
3. Technical Parameters：
Name | Specification | Item | Specification |
product type | Ultrasonic flowmeter transducer | resistance value Z(Ω) | 200Ω±30% |
product model | PH1000-01 | Maximum driving voltage | 300V |
Piezoelectric ceramic Frequency f(kHz) | 1.00MHz±2% | operating temperature(℃) | 4~+50℃ |
Transducer frequency f(kHz) | 1.00MHz±3% | storage temperature(℃) | -30~+80℃ |
bandwidth△f（underwater） | ±10% | waterproofing grade | IP68 |
Residual vibration of transducer | ˂ 30μs | Shell material | PPS（polyphenylene sulfide） |
overall sensitivity(V) (0dB=3Vp-p 8pulses L=80mm) |
>200mv |
cable specification |
Single Shield Wire 40CM |
beam angle°(-3dB) | 6° | corrosion resistance | Weak acid weak alkali resistant |
electrostatic capacitance(pf) | 1200PF±20% | weight(g) | 16g/pc |
Remark | size of transducer structure can be customized according to user needs. | ||
4.Impedance curve:
5.Sensitivity test
Ultrasonic Flow Meters Application:
Ultrasonic flow meters are a non-contact means of measuring flow velocity. They are clamp-on devices that attach to the exterior of the pipe and enable measurement of corrosive liquids without damage to sensors.The two types of ultrasonic flow meters, Doppler and transit time, each function by way of two different technologies. The Doppler ultrasonic flow meter must have particles or bubbles to reflect the ultrasonic signals. Consideration must be given to the lower limits for concentrations and sizes of solids or bubbles, and the liquid must flow at a rate high enough to keep the solids suspended.
When transmitted into a pipe that contains flowing liquid with such discontinuities, an ultrasonic pulse or beam reflects from them with a change in frequency that is directly proportional to the liquid’s flow rate. Thus, the ultrasonic Doppler flowmeter calculates flow rate from the velocity of the discontinuities, rather than from the velocity of the liquid.