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cheap ultrasonic depth sensor transducer for depth mesurement

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  • PHW-1M-02
  • Piezohannas
  • PHW-1M-02

              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:


S3_Z(V00(SQ{`0}77`N7MQ




 

2. Wiring Method

ZPTLAM[DLWU61A0V4{_0NO1


 

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.


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Piezo Hannas (WuHan) Tech Co,.Ltd  is a professional piezoelectric ceramics and ultrasonic transducer manufacturer, dedicated to ultrasonic technology and industrial applications.                                    
 

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