Water proof type ultrasonic sensors were widely used for parking sensors, proximity sensors and level sensors, etc. With the perfect seal these sensors can be used in a relatively poor environment such as dust and humidity.
TECHNICAL SPECIFICATIONS
Item | Parameter | Remark |
Resonant frequency | 40±1.0kHz | |
Echo Sensitivity | ≥80mV | Simulation test circuit see Figure 1. |
Decay Time | ≤1.2ms | |
Directivity (X) | 120±15° | Directivity test see Fig 2. |
Directivity (Y) | 60±10° | |
Electrostatic Capacitance | 1800±15%pF | 1kHz/25℃ |
Input voltage | ≤140Vp-p | 40kHz/ pulse width 0.5ms/ interval 20ms |
Mean Time to Failure | 50000h | |
Operating temperature | -40~+80℃ | |
Storage temperature | -40~+85℃ |
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