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Turbidity Analyzer

2021-01-2072

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Turbidity Analyzer


Measurement principle

Turbidity/Suspended Solids Concentration refers to the degree of hindrance of suspended solids in water to light transmission.

Turbidity means that when a beam of light passes through a liquid medium, part of the light will be refracted on the surface of the insoluble particles. The degree of light refraction is related to the size and shape of the particle. The intensity of the scattered light has a certain proportional relationship with the size of the particles.

When a beam of light passes through the suspended object to be measured, the light is absorbed by the measured object, and only a small part of the light is transmitted through after reflection and scattering. According to Lambert-Beer law lnS = CK * MLSS, the concentration of suspended matter has a certain proportional relationship with the transmittance of transmitted light.

Typical application

▲Source water monitoring

▲Filter backwash detection

▲Filter monitoring

▲Driking-water quality monitoring

▲Separation process monitoring

▲Cooling water monitoring

▲Circulating water detection

▲Sludge treatment monitoring

▲Aeration tank monitoring


Feature

★Directly measure the turbidity value and the suspended matter concentration

Smart digital MEMS sensor

★Sensor self-diagnosis, proactively reminding maintenance and management

★The sensor automatically completes all compensation and measurement algorithms

★The sensor data communication bus cable can reach 1000 meters

★Quick response sensor

★ Sensor IP68 protection level

★Automatic temperature compensation

★Good robustness

★ Infrared optical sensor

★Directly measure the true turbidity value

★Comply with ISO 7027/ISO7020/EN27027 standards

Installation

▲Avoid bubble interference

▲The inclined surface of the probe faces the direction of the fluid, and the smooth sensor surface has a self-cleaning effect

▲Keep a distance of 20cm from the side wall or bottom, try to avoid the interference caused by the side wall

▲It is forbidden to install where suspended solid particles are easy to settle


Calibration

The turbidity measurement with NTU or FNU as the unit of measurement does not require calibration.


Application Case

★Chlor-alkali: monitor the working status of the secondary brine filtration membrane

★Sewage: inlet, sludge treatment, dehydration, aeration tank and outlet, detection and control of water treatment process

★Drinking water: detect and control all steps of the drinking water treatment process


Technical Parameters

Measurement range

0~4000NTU/FNU,0~50g/L                                

Accuracy

1%FS,0.1°C

Sensitivity

0.1NTU/FNU 0.01mg/L

Response time(T90)     

<1 s

Automation Compersation

Temperature

Liquid temperature

0~55℃

Pressure

Max. 5Bar

Ambient temperature

-10~50°C

Humility

0~90%

Sensor Size

Φ27mm*150mm

Material

PVC




Controller features

• Quick and convenient

    The navigation menu contains 6 languages, which can be operated easily.

    Uses M12 connector to connect with sensor, Plug-and-play.

• Process safety

    4.3" or 7" large size color LCD touch screen, convenient and safe touch operation and debugging

    Large size screen with red flashing alarm, clearly visible from long distances and in dark areas

    Alarm immediately, safe the process

    Using M12 connector to connect with sensor, no risk of wrong connection

• Data alarm record

    Real-time data curve display

    Record function for up to 6000 alarms

• Expert calibration function

   Multi-point calibration function up to 9 point

• Powerful self-diagnosis function

    Built-in heartbeat monitoring function and watchdog

    Monitor the status of controllers and sensors, and promptly remind customers to take necessary maintenance

    High-standard hardware and software security and password protection

• Powerful control function

    High(low) limit control function

    Optional: Timer control(automatic cleaning) function

    Optional: analog PID controller

    Optional: PWM controller

• Flexible fieldbus communication functions for IOT4.0

    Optional fieldbus MODBUS, HART, Foundation Fieldbus FF, PROFIBUS PA, PROFIBUS DP, etc.

现场


Technical parameters (Controller)

Display

4.3" or 7" industrial color touch screen  

Language

6 languages

Diagnosis function

Sensor self-diagnosis

Heartbeat monitoring

6000 alarm record

Analog output

4~20mA,maximum load 500Ω

Alarm

Relay(2A), freely set alarm

Control function

Optional Timer controller

Optional PID analog controller

Optional PWM controller

Calibration

Expert calibration function

Multi-point calibration function up to 9 point

Communication

RS485 MODBUS RTU, HART,

Foundation Fieldbus FF,

PROFIBUS PA, PROFIBUS DP,

MODBUS TCP/IP, etc

Power

80~264V AC,1A

or 19~28V DC,3A

Ambient temperature

-10~55℃

Wall-mounted

(1~2Channels)

4.3" color touchscreen

213*185*84mm

7" color touchscreen

323x237x172mm

IP65,option Ex d IICT6

Portable

(1~2Channels)

(Built-in lithium battery)

7" color touchscreen

IP40 250x144x184mm

IP40 357x144x184mm

IP67 420x325x180mm

19" Rack

(1~6Channels)

7" color touchscreen

IP40 483x133x238mm




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