SEN0189

SEN0189 Datasheet

Turbidity sensor SKU SEN0189

Part	Datasheet
SEN0189	SEN0189 (pdf)

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Turbidity sensor SKU SEN0189 Contents • 1 Introduction • 2 Specification • 3 Connection Diagram • 4 Examples Introduction The turbidity sensor detects water quality by measuring the levels of turbidity. It uses light to detect suspended particles in water by measuring the light transmittance and scattering rate, which changes with the amount of total suspended solids TSS in water. As the TTS increases, the liquid turbidity level increases. Turbidity sensors are used to measure water quality in rivers and streams, wastewater and effluent measurements, control instrumentation for settling ponds, sediment transport research and laboratory measurements. This sensor provides analog and digital signal output modes. The threshold is adjustable when in digital signal mode. You can select the mode according to your MCU. Note The top of probe is not waterproof. Specification • Operating Voltage 5V DC • Operating Current 40mA MAX • Response Time <500ms • Insulation Resistance 100M Min • Output Method: Analog output 0-4.5V Digital Output High/Low level signal you can adjust the threshold value by adjusting the potentiometer • Operating Temperature 5 ~90 • Storage Temperature -10 ~90 • Weight 30g • Adapter Dimensions 38mm28mm10mm/1.5inches 1.1inches0.4inches Connection Diagram Interface Description: "D/A" Output Signal Switch "A" Analog Signal Output, the output value will decrease when in liquids with a high turbidity "D" Digital Signal Output, high and low levels, which can be adjusted by the threshold potentiometer Threshold Potentiometer you can change the trigger condition by adjusting the threshold potentiometer in digital signal mode. Examples Here are two examples Example 1 uses Analog output mode Example 2 uses Digital output mode Example 1 void setup Serial.begin 9600 //Baud rate 9600 void loop int sensorValue = analogRead A0 ;// read the input on analog pin 0 float voltage = sensorValue * / // Convert the analog read ing which goes from 0 - 1023 to a voltage 0 - 5V Serial.println voltage // print out the value you read delay 500 ; Example 2 int ledPin = 13 board one int sensor_in = 2 Pin 2 // Connect an LED on pin 13, or use the on // Connect turbidity sensor to Digital void pinMode ledPin, OUTPUT pinMode sensor_in, INPUT ; mode // Set ledPin to output mode //Set the turbidity sensor pin to input void digitalWrite ledPin, HIGH digitalWrite ledPin, LOW ; the led //read sensor signal // if sensor is LOW, then turn on // if sensor is HIGH, then turn off This is a reference chart for the mapping from the output voltage to the NTU according to different temperature. e.g. If you leave the sensor in the pure water, that is NTU < it should output “4.1±0.3V” when temperature is 10~50 characteristic curve “Voltage ----Temperature Note In the diagram, the unit measuring turbidity is shown as NTU, also it is known as JTU Jackson Turbidity Unit , 1JTU = 1NTU = 1 mg/L. Refer to Turbidity wikipedia Powered By DFRobot 2008-2017

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Turbidity sensor SKU SEN0189

Contents
• 1 Introduction
• 2 Specification
• 3 Connection Diagram
• 4 Examples

Introduction

The turbidity sensor detects water quality by measuring the levels of turbidity. It uses light to detect suspended particles in water by measuring the light transmittance and scattering rate, which changes with the amount of total suspended solids TSS in water. As the TTS increases, the liquid turbidity level increases. Turbidity sensors are used to measure water quality in rivers and streams, wastewater and effluent measurements, control instrumentation for settling ponds, sediment transport research and laboratory measurements. This sensor provides analog and digital signal output modes. The threshold is adjustable when in digital signal mode. You can select the mode according to your MCU.

Note The top of probe is not waterproof.

Specification
• Operating Voltage 5V DC
• Operating Current 40mA MAX
• Response Time <500ms
• Insulation Resistance 100M Min
• Output Method:

Analog output 0-4.5V Digital Output High/Low level signal you can adjust the threshold value by adjusting the potentiometer
• Operating Temperature 5 ~90
• Storage Temperature -10 ~90
• Weight 30g
• Adapter Dimensions 38mm*28mm*10mm/1.5inches *1.1inches*0.4inches

Connection Diagram

Interface Description:
"D/A" Output Signal Switch "A" Analog Signal Output, the output value will decrease when in liquids with a high turbidity "D" Digital Signal Output, high and low levels, which can be adjusted by the threshold
potentiometer Threshold Potentiometer you can change the trigger condition by adjusting the threshold
potentiometer in digital signal mode.

Examples

Here are two examples Example 1 uses Analog output mode Example 2 uses Digital output mode

Example 1
void setup Serial.begin 9600 //Baud rate 9600
void loop
int sensorValue = analogRead A0 ;// read the input on analog pin 0 float voltage = sensorValue * / // Convert the analog read ing which goes from 0 - 1023 to a voltage 0 - 5V Serial.println voltage // print out the value you read delay 500 ;

Example 2
int ledPin = 13 board one int sensor_in = 2 Pin 2
// Connect an LED on pin 13, or use the on // Connect turbidity sensor to Digital
void pinMode ledPin, OUTPUT pinMode sensor_in, INPUT ;
mode
// Set ledPin to output mode //Set the turbidity sensor pin to input
void digitalWrite ledPin, HIGH digitalWrite ledPin, LOW ;
the led
//read sensor signal // if sensor is LOW, then turn on
// if sensor is HIGH, then turn off

This is a reference chart for the mapping from the output voltage to the NTU according to different temperature. e.g. If you leave the sensor in the pure water, that is NTU < it should output “4.1±0.3V” when temperature is 10~50
characteristic curve “Voltage ----Temperature Note In the diagram, the unit measuring turbidity is shown as NTU, also it is known as JTU Jackson Turbidity Unit , 1JTU = 1NTU = 1 mg/L. Refer to Turbidity wikipedia

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Datasheet ID: SEN0189 509097