The ARGES CDOM/fDOM Sensor by Keynes Control. 

Detect biological activities in water systems such as rivers, reservoirs, bays. The ARGES CDOM/FDOM Sensor by Keynes Control is a single-channel instrument that can detect and report CDOM levels in the range of 0 - 1000 QSU and temperature in Degrees Celsius. The sensor has been designed to be used as a stand-alone laboratory instrument, as part of a multi-parameter device inside a Keynes Controls SONDE, and can be connected directly into a plant-wide SCADA system using the in-built MODBUS protocol. The SDI12 and RS485 digital networks enable the sensors to be directly connected to Web based data loggers, Wi-Fi and Local Area Networks.

Product Features: 

• Concentration range:0.- 100 QSU / 0 - 100 ppb   - other range on request
• Resolution: Five auto range scales: 0.00 - 999.9mg/l.
• Accuracy:+/- 1% of reading.
• Stand-alone and SONDE Multi-parameter operations
• Sensor Warranty:2 years
• pH range: 0 - 14
• Operation: Fluorometer
• Response Time: 1 Sec
• Temperature Sensor: NTC  0 - 50 Deg C / 0.2 % accuracy
• Built-in Digital Networks: SDI12 / RS485 / MODBUS Digital Communications
• Simple Calibration: Multi point Calibration Point Option
• Sensor Information: User interrogation Serial Number and Last Calibration date
• Optional Analog Output: 0-2 Volts DC
• SI Units: Raw / QSU / ppb
• Analogue Output
• Automatically Assigned SI Units - QSU
• In-built Temperature Sensor - Degrees Celsius
• Very low stand-by power
• Wide Detection Range
• Direct connection to to 3rd Party Loggers
• Full Digital Operation
• Simple + multiple point Calibration Point Support.
• Optional USB Interface
• 0-2 V DC analogue output - proportional to concentration
• Free Windows Applications Software