The piezoelectric rain sensor measures the weight of a single raindrop and calculates rainfall. The raindrop receives the effect of raindrop weight and air resistance during the landing process. When reaching the ground, the speed is a constant speed. According to P=mv, the impact weight can be obtained by measuring the impact, and then the continuous rainfall amount can be obtained.
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Parameters |
Measuring Range |
Accuracy |
Resolution |
Sampling Frequency |
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Rain Gauge (Piezoelectric) |
0-200mm/h |
0.1mm/h |
±10% |
1HZ |
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Electric Parameter |
Power Supply: DC12-24V; RS485 Interface (MODBUS Communication Protocol); Power Dissipation <0.2W |
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Data Export |
Continuous Rainfall, Rainfall Duration, Rainfall Intensity, Maximum Intensity of Rainfall |
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Maximum Output Frequency |
Passive Mode: 1/S |
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Operating Temperature |
0℃—70℃ |
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Level of Protection |
IP65 |
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Principle: The working principle of the piezoelectric rain gauge is to use the piezoelectric effect of the piezoelectric vibrator to convert the mechanical displacement (vibration) into an electrical signal, and then convert the voltage waveform according to the energy of the raindrop impact, and according to the change of the voltage waveform, you can Get the size of the rainfall, so as to realize the measurement of the weight of a single raindrop, and then calculate the rainfall. Resolution: 0.01mm Accuracy: The long-term accuracy in the field is better than 8%, depending on the weather conditions Average current: less than 10mA, Working humidity range 0～100%RH Operating temperature range -40～60°C (standard), Protection level: IP65
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