TriOS NICO UV Nitrate Sensor
The TriOS NICO is a low-cost UV photometer for online measurement of nitrate in lakes/rivers, drinking water, and wastewater applications.
Features
- Internal compensation for temperature, turbidity, and organic substances
- RS-485 Modbus RTU output for integration with data collection platforms
- Optional W55 V2 wiper cleans optics & reduces maintenance intervals
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Overview
The TriOS NICO is a low-cost UV photometer for online measurement of nitrate in lakes/rivers, drinking water, and wastewater applications. The four detection channels enable a precise optical determination of nitrate by absorption, taking into account turbidity and organic substances that pose a problem for many products currently on the market. An internal temperature correction additionally increases stability of the measured values.
Easy Configuration
The TriOS NICO is compatible with the G2 interface box, allowing fast and easy configuration of the sensors using a web browser. The sensor can be easily integrated into existing process control systems and external data loggers using the native RS-485 Modbus RTU output, and the optional W55 V2 wiper reduces maintenance intervals by cleaning the optics before each measurement.
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Light Source
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Xenon flash lamp
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Detector
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4 photo diodes + filter
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Measurement principle
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Attenuation
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Optical path
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0.3mm, 1mm, 2mm, 5mm, 10mm, 20mm, 50mm
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Parameter
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NO3-N, NO3, NOx-N, NOx (calibrated with NO3 standard solution)
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Measurement range at 1mm path
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0.5...60 mg/L NO3-N
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Measurement range at 10mm path
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0.05...6 mg/L NO3-N
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Measurement accuracy
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± (5% + 0.1 mg/L NO3-N) with 10mm path
± (5% + 1 mg/L NO3-N) with 1mm path
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Turbidity compensation
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Yes
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Data logger
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~2 GB
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T100 response time
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20 s
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Measurement interval
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≥ 10 s
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Housing material
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Stainless steel (1.4571/1.4404) or titanium (3.7035)
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Dimensions (L x Ø)
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~ 470 mm x 48 mm (10mm path)
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~ 18.5“ x 1.9“ (with 10mm path)
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Weight stainless steel
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~ 3 kg
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~ 6.6 lbs
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Weight titanium
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~ 2 kg
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~ 4.4 lbs
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Interface digital
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Ethernet (TCP/IP), RS-485 (Modbus RTU)
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Power consumption
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≤ 7 W
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Power supply
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12...24 VDC (±10%)
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Maintenance effort
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≤ 0.5 h/month (typical)
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Calibration/maintenance interval
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24 months
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System compatibility
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Modbus RTU
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Warranty
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1 year (EU: 2 years)
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US: 2 years
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Max. pressure with SubConn
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30 bar
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~ 435 psig
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Max. pressure with fixed cable
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3 bar
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~ 43.5 psig
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Max. pressure in FlowCell
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1 bar, 2...4 L/min
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~ 14.5 psig at 0.5 to 1.0 gpm
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Protection type
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IP68
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NEMA 6P
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Sample temperature
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+2...+40 °C
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~ +36 °F to +104 °F
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Ambient temperature
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+2...+40 °C
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~ +36 °F to +104 °F
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Storage temperature
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-20...+80 °C
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~ -4 °F to +176 °F
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Inflow velocity
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0,1...10 m/s
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~ 0.33 to 33 fps
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Questions & Answers
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15S401010
NICO UV nitrate sensor with 10mm path length & stainless steel housing, MCBH-8-MP connector
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15S301010
NICO UV nitrate sensor with 5mm path length & stainless steel housing, MCBH-8-MP connector
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15S201010
NICO UV nitrate sensor with 2mm path length & stainless steel housing, MCBH-8-MP connector
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