CommunityForumWikiBlogLearn

Water Quality Chlorophyll Sensor

SKU: SEN0713

This industrial-grade chlorophyll sensor uses fluorescence principle. Probe & housing are integrated. It measures 0-400μg/L chlorophyll in water (0.1μg/L resolution, ±5% FS accuracy). Fiber optic design + internal filtering resist light interference. RS485 (ModBus-RTU) interface. Built-in temp sensor for auto compensation. Factory-calibrated, ready to use. IP68 waterproof for long submersion. Suitable for rivers/lakes/ponds algal research. Arduino/LoRaWAN setup tutorials included.

Downloadable Resources

  • Docs
  • Tech Specs

    • 1. Getting Started

    This article details effective methods for sensor installation, offering precautions and maintenance tips to ensure accurate measurements and optimal performance.

    2. Example Code for Arduino-Chlorophyll Data Monitoring

    This project demonstrates how to connect the RS485 Chlorophyll Sensor to an Arduino development board to read real-time chlorophyll concentration, fluorescence intensity, and temperature data, enabling real-time environmental monitoring. Users will learn how to implement RS485 communication with ModBus-RTU protocol to interact with industrial sensors.

    Reference

    The article breaks down communication protocols, highlighting RS485 and Modbus-RTU, and offers examples for reading and setting sensor values, aiding in practical understanding of sensor networking.

    Specification

    Parameter Specification
    Power Supply Voltage 10~30V DC
    Power Consumption 0.4W
    Communication Interface RS485 (Standard ModBus-RTU protocol)
    Measurement Range Chlorophyll: 0~400 μg/L
    Fluorescence Intensity: 0~100 RFU
    Temperature: 0°C~+60°C
    Measurement Accuracy Chlorophyll: ±5%FS (25℃)
    Fluorescence Intensity: ±5%FS (25℃)
    Temperature: ±0.5°C
    Resolution Chlorophyll: 0.1 μg/L
    Fluorescence Intensity: 0.1 RFU
    Temperature: 0.1°C
    Temperature Compensation Range 0°C~+60°C
    Response Time ≤30S
    Operating Temperature 0°C~+40°C
    Measurement Principle Fluorescence method
    Waterproof Rating IP68
    Pressure Resistance 0.6MPa
    Cable Length 5m
    Housing Material Corrosion-resistant plastic

    Pinout

    Num Label Description
    Brown line VCC Power input positive pole, DC10-30V power supply
    Black line GND Power ground wire
    Yellow line 485-A RS485 data line A
    Blue line 485-B RS485 data line B

    FAQ

    • How to troubleshoot when there is a problem?
      1. The computer has multiple COM ports, and the selected port is incorrect.
      2. The device address is wrong, or there are devices with duplicate addresses (all factory defaults are 1).
      3. Baud rate, check mode, data bit, stop bit error.
      4. Host polling interval and waiting response time are too short, both need to be set above 200ms.
      5. 485 bus is disconnected, or A and B lines are connected in reverse.
      6. Too many devices or too long wiring, power supply should be provided nearby, 485 enhancer should be added, and 120Ω terminal resistance should be added.
      7. USB to 485 driver is not installed or damaged.
      8. Equipment is damaged.

    Explore More Related Questions >

    Was this article helpful?

    TOP