125KHz Ultrasonic Flow Transducer for Ultrasonic Water Flow Meters
Product Description
125KHz Ultrasonic Flow Transducer for Ultrasonic Water Flow Meters
Items | Technical Parameters | Image | |
Name | 125KHz ultrasonic transducer |
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Model | PHA-125-WO | ||
Frequency | 125KHz±5% | ||
Detection Distance | 0.15～2m | ||
Minimum Parallel lmpedance | 700Ω±20％ | ||
Capacitance | 800pF±20％ @1KHz | ||
Sensitivity | Driving Voltage：750Vpp，Distance:0.3m， Echo Amplitude：110 mV | ||
Operating Voltage | Peak Voltage＜800 VPP | ||
Operating Temperature | -40～+80℃ | ||
Pressure | ≤3Kilos or 0.3MPa | ||
Angle | (Beamwidth) Half-power Beam Width@-3dB:5.7°±1， Sharp Angle:13.6°±2 | ||
Housing Material | PVDF | ||
Usage | distance measurement | ||
Installation Dimension | IP68 | ||
Protection Level | 40g±5％（ Length：10M）
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Weight | Integrated interface：Red+，White-，Black: shielded wire （ default : without temperature sensor）
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Admittance Curve | Product Structure Diagram | ||
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Block diagram of ultrasonic transducer :
Schematic Diagram of Temperature Sensor:
Integrated type Cable instruction:
1.Wiring instruction of transducer: interface (3pin, 2.54mm terminal)
Red: transducer +
White: transducer -
Black: shielding
2.Cable Instruction of Temperature Sensor: interface (3pin, 2.0mm terminal)
Red and black are temperature sensor wiring
Ultrasonic water flow meters Application :
Ultrasonic water flow meters measure the speed of fluid passing through the pipe using ultrasound to measure the volumetric flow. In a transit-time ultrasonic liquid flow meter, an ultrasonic signal is transmitted in the direction of the flowing fluid downstream, and then another signal is transmitted against the flowing fluid upstream. In its most basic form, the time for the sonic pulse to travel downstream is compared to the time for the pulse to travel upstream. Using this differential time, the velocity of the following fluid is calculated. Then the meter calculates the volumetric flow rate in the pipe using this fluid velocity. In addition, BTU energy measurement can be derived from the volumetric flow rate and the temperature difference between the hot and cold legs. Clamp-on ultrasonic meters can measure water from outside of the pipe by shooting pulses of sound through the pipe walls, thus having application flexibility and making them suitable for water flow measurements in large pipes.