cheap ultrasonic depth sensor transducer for depth mesurement
Product Description
cheap ultrasonic depth sensor transducer for depth mesurement
1. Introduction
Underwater sounder transducer uses ultrasonic waves to transmits underwater, and is reflected back when they meet measured object.It can detect distance between the sensor and the measured object and then transmits to ships, buoys, underwater unmanned aerial vehicles, etc. As a depth sounder, it can also be used for underwater distance measurement.
The product protection level reaches IP68 level, and it can be soaked for a long time underwater 100 meters without damage. (Note that the cable outlet part of the instrument needs to be reliably sealed after wiring to avoid water )
2. the principle of measurement
The ultrasonic wave is emitted by the ultrasonic probe ,and transmits through the water when it encounters the target to be measured, and then returns to the ultrasonic probe through the water after reflect, because the time of transmission and reception can be known, according to formula , time ×sound speed ÷ 2 = The distance from the launch surface to the measured target.
Calculation formula: D = C × t / 2
(Divided by 2 is because the sound wave is actually a round trip from launch to reception, D is the distance, C is the speed of sound, and t is the time).If the time difference between transmission and reception is 0.01 second, the sound speed under fresh water with normal temperature is 1500 m/s.
1500 m / s × 0.01 sec = 15 m
15 meters ÷ 2 = 7.50 meters
That is, the distance between the emitting surface of the probe and the target to be measured is 7.5 meters.
3.Technical parameters：
Items | Technical Parameters |
Model | PHW-1M-02 |
Frequency | 1MHz |
Detection Distance | 0.15 ～ 2m (Customizable: detecting ranging from 101 meters to 1000 meters) |
Measuring output | the distance between the emitting surface of the probe and the target being measured |
Connection method | default is threadless, cylinder
|
supply voltage | DC 24V |
Supply current | 60mA
|
Operating Temperature | -10～+60℃ |
Power consumption
| 24V × 60mA = 1.44W |
Output signal | RS485 MODBUS protocol |
Display | no |
cable length:
| 1 meter
|
Cable outlet | 4 |
Protection Level | IP68 |
Working water depth:
| ≤ 100 meters(101 ~ 1000 meters, it need to be customized) |
4. Image:
2. Wiring Method
232 communication wiring method:
Power supply: Red line: DC 24VDC + ;black line: DC 24VDC –
232 communication: blue line: 232 output TXD; yellow line: 232 receiving RXD ;Black line: 232 GND
RS232 output to reliably ground the black line;
Grounding requirements: Please connect the black wire of the negative pole of the power supply to the ground.