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PTSA App

AlpHa Measurement Solutions |
CDOM in Environmental Monitoring

CDOM in Environmental Monitoring

Monitoring Colored Dissolved Organic Matter (CDOM) in natural waters is critical for evaluating environmental organic pollution, carbon dynamics, and water quality. AlpHa’s XC-CDOM sensor utilizes patent-pending optical technology with the following unique features:

  • Industry-leading minimum detection limit at 0.01 ppb
  • Automatic temperature compensation
  • Analog (0 – 3 V) or digital (RS-485 MODBUS RTU) output formats
  • Options for custom OEM sonde multiparameter and stand-alone configurations

CDOM Parameter in Environmental Monitoring

CDOM Sensor Capabilities

  • Minimum Detection Limit: < 0.01 ppb
  • CDOM Range:
    • Sonde: 0 to 650 ppb
    • Stand-alone: 0 to 3,000 ppb (adjustable)
  • CDOM Response Time:
    • Sonde: T100 ~3 seconds
    • Stand-alone: T100 ~2 seconds
  • Temperature Range: 0 to 50°C
  • Max Pressure: 375 m 
  • Emission Wavelength: 465 / 110 nm
  • Input Power:
    • Sonde: 5 – 36 VDC
    • Stand-alone: 6 – 36 VDC
  • Power Consumption:
    • Sonde: 450 mW
    • Stand-alone: 500 mW
    • Custom Options Available
  • Warranty: 12 Months

Configuration Options

  • Form Factor
    • Stand-alone
    • Sonde / Cartridge
    • Custom Options Available
  • Housing Material Options
    • Titanium
    • Custom Options Available
  • Thermistor Options
    • Integrated Temperature Compensation
  • Integrated Insertions
    • Custom Options Available

Communication and Connection Options

  • Analog
    • 0 – 3 V with UART-MODBUS
    • Custom Options Available
  • Digital
    • RS-485 MODBUS RTU
    • Custom Options Available 
  • Connectors
    • Integrated Connectors (detachable or cableless)
      • Custom Options Available 
    • Connectors with Cables (including temperature)
      • Any commercially available connectors and custom options