Analog DevicesEVAL-CN0409-ARDZ

Water Quality Management Applications: 

Related Products:

- EVAL-CN0428-EBZ
- EVAL-CN0363-PMDZ
- EVAL-CN0312-SDPZ
- EVAL-CN0349-PMDZ
- EVAL-CN0359-EB1Z
- EVAL-CN0411-ARDZ
- EVAL-CN0326-PMDZ

Related Content:

- An Introduction to Analog Devices’ Water Quality Monitoring Sensors
- Electrochemical Sensing Allows for Precise, Convenient Water Quality Measurements
- Introducing the CN0428 Water Quality Analysis Reference Design from Analog Devices
- Water Quality Measurement System – Circuits from the Lab Reference Design​

Reference Design: Low to High Level Water Turbidity Measurement System

CN0409 uses the ADPD105 photometric front end and a network of 860nm Infrared emitters and silicon PIN photodiodes to achieve a water turbidity measurement system. The system can measure low to high water turbidity levels ranging from 0 FTU to 1000 FTU (limited by available solution). The IR LED and photodiode network is arranged in such a way that it can support two of the most recognized turbidity measurement standards – ISO7027 (both ratio and non-ratio) and GLI Method. With three-point calibration, the typical accuracy that the system can achieve is ± 0.50 FTU or ±5% of the reading – whichever is greater. This accuracy combined with the 0.05 FTU noise level makes the measurements obtained using this system very reliable.

Block Diagram:  

Features:

- 0-4000 FTU Measurement
- +/-0.5 FTU system accuracy (0-1000 FTU)
- Ambient light rejection

Applications:

- Instrumentation & Measurement
        - Chemical Analysis & Analytical Instruments

Functional Setup:

The following equipment is needed

- EVAL-CN0409-ARDZ circuit board
- EVAL-ADICUP360 Arduino-compatible platform loaded with CN-0409 firmware.
- Serial terminal software (PuTTY, Tera Term, or similar).
- USB type A to USB micro cable.
- Test vials.
- Turbidity calibration solutions: Oakton T100, HI88703-11, or Cole Palmer turbidity kit

Compatible Boards:

• EVAL-ADICUP360: ADUCM360 Microcontroller Evaluation Board Flash

• List of Intel boards with the Arduino connector

Related ADI parts:

• LTC4313: 2-Wire Bus Buffers with High Noise Margin 

• ADPD105: Photometric Front End with I2C 

• ADP7105: 20 V, 500 mA, Low Noise LDO Regulator with Soft Start 

Reference Documentation:

• List of ADI Arduino Shields