Gravity Arduino Analog Turbidity Sensor

The

gravity

arduino

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

liquid

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.

class='font-size-24

mb-3'>Specifications: Operating

Voltage:

5V

DC Operating

Current:

40mA

(MAX) Response

Time

:

<500ms Insulation

Resistance:

100M

(Min) 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

class='font-size-24

mb-3'>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.

class='font-size-24

mb-3'>Examples:

Here

are

two

examples:

class='font-size-24

mb-3'>Example

1

uses

Analog

output

mode

Example

2

uses

Digital

output

mode

class='font-size-24

mb-3'>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

*

(5.0

/

1024.0);

//

Convert

the

analog

reading

(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;

//

Connect

an

LED

on

pin

13,

or

use

the

onboard

one int

sensor_in

=

2;

//

Connect

turbidity

sensor

to

Digital

Pin

2

void

setup(){

pinMode(ledPin,

OUTPUT);

//

Set

ledPin

to

output

mode

pinMode(sensor_in,

INPUT);

//Set

the

turbidity

sensor

pin

to

input

mode }

void

loop(){

if(digitalRead(sensor_in)==LOW){

//read

sensor

signal

digitalWrite(ledPin,

HIGH);

//

if

sensor

is

LOW,

then

turn

on

}else{

digitalWrite(ledPin,

LOW);

//

if

sensor

is

HIGH,

then

turn

off

the

led

} }

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

<

0.5,

it

should

output

“4.1±0.3V”

when

temperature

is

10~50℃.

characteristic

curve

“Voltage

----Temperature