OPUS is the new generation of spectral sensors for online measurement of nitrogen and carbon compounds. Through the analysis of a full spectrum, OPUS is able to deliver reliable readings for NO3-N, NO2-N, organic ingredients (CODeq, BODeq, DOCeq, TOCeq), and a number of other parameters. OPUS features the new TriOS G2 interface, allowing fast and easy configuration of sensors by using a web browser. Integration into existing process control systems and external data loggers has never been easier. With the optional battery pack, mobile applications are also feasible. WiFi connectivity allows laptops, tablets or smartphones to be easily used for control without any special application software or app installation. Benefits - Without sampling and preparation of test samples
- Real-time sensor
- Without reagents
- Optical window with nano coating
- Pre-installed application calibration
Applications - Sewage treatment plants
- Environmental monitoring
- Drinking water monitoring
- Industrial applications
Technical SpecificationsMeasurement principle | Attenuation, spectral analysis | Light source | Xenon flash lamp | Detector | High-end miniature spectrometer 256 Channels 200 to 360 nm 0.8 nm/pixel | Optical path | 0.3mm, 1mm, 2mm, 5mm, 10mm, 20mm, 50mm | Parameter | Nitrate NO3-N, Nitrite NO2-N, CODeq, BODeq, DOCeq, TOCeq, TSSeq, KHP, SAC254, COD-SACeq, BOD-SACeq | Measurement accuracy | see measurement ranges in next table | Turbidity compensation | Yes | Data logger | ~ 2 GB | T100 response time | 2 min | Measurement interval | ≥ 1 min | Housing material | Stainless steel (1.4571/1.4404) or titanium (3.7035) | Dimensions (L x Ø) | 470 mm x 48 mm (bei 10 mm path) | ~ 18.5“ x 1.9“ (with 10 mm path) | Weight stainless steel | ~ 3 kg (bei 10 mm path) | ~ 6.6 lbs (with 10 mm path) | Weight titanium | ~ 2 kg (bei 10 mm path) | ~ 4.4 lbs (with 10 mm path) | Interface digital | Ethernet (TCP/IP), RS-232 or RS-485 (Modbus RTU) | Power supply | 12...24 VDC (± 10 %) | Power consumption | ≤ 8 W | Maintenance effort | ≤ 0.5 h/month (typical) | Calibration/maintenance interval | 24 months | System compatibility | Modbus RTU | Warranty | 1 year (EU: 2 years) | US: 2 years | Max. pressure with SubConn | 30 bar | ~ 435 psig | Max. pressure with fixed cable | 3 bar | ~ 43.5 psig | Max. pressure in FlowCell | 1 bar, 2...4 L/min | ~ 14.5 psig at 0.5 to 1.0 gpm | Protection type | IP68 | NEMA 6P | Sample temperature | +2...+40 °C | ~ +36 °F to +104 °F | Ambient temperature | +2...+40 °C | ~ +36 °F to +104 °F | Storage temperature | -20...+80 °C | ~ -4 °F to +176 °F | Inflow velocity | 0.1...10 m/s | ~ 0.33 fps to 33 fps |
Measuring RangeSingle parameter under optimum laboratory conditions Parameter | Measurement principle | Unit | Factor | path length [mm] |
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| | | | 0.3 | 1 | 2 | 5 | 10 | 20 | 50 |
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absorbance | spectral | AU** | - | 0.01...2.2 | 0.01...2.2 | 0.01...2.2 | 0.01...2.2 | 0.01...2.2 | 0.01...2.2 | 0.01...2.2 | absorbance | spectral | 1/m | - | 50...7300 | 15...2200 | 7.5...1100 | 3...440 | 1.5...220 | 0.75...110 | 0.3...44 | Nitrate N-NO3 | spectral | mg/L | - | 1.0...330 | 0.3...100 | 0.15...50 | 0.06...20 | 0.03...10 | 0.015...5 | 0,006...2 | Nitrate NO3 | spectral | mg/L | - | 4.43...1460 | 1.33...440 | 0.67...220 | 0.27...88 | 0.13...44 | 0.067...22 | 0.030...9 | Nitrite N-NO2 | spectral | mg/L | - | 1.7...500 | 0.5...150 | 0.25...75 | 0.1...30 | 0.05...15 | 0.025...7.5 | 0.01...3 | Nitrite NO2 | spectral | mg/L | - | 5.6...1650 | 1.65...500 | 0.82...250 | 0.33...100 | 0.17...50 | 0.083...25 | 0.033...10 | DOCeq | spectral | mg/L | - | 17...3300 | 5.0...1000 | 2.5...500 | 1.0...200 | 0.5...100 | 0.25...50 | 0.1...20 | TOCeq | spectral | mg/L | - | 17...3300 | 5.0...1000 | 2.5...500 | 1.0...200 | 0.5...100 | 0.25...50 | 0.1...20 | CODeq | spectral | mg/L | - | 100...7300*** | 30...2200*** | 15...1100*** | 6.0...440*** | 3.0...220*** | 1.5...110*** | 0.6...44*** | BODeq | spectral | mg/L | - | 100...7300*** | 30...2200*** | 15...1100*** | 6.0...440*** | 3.0...220*** | 1.5...110*** | 0.6...44*** | KHP | spectral | mg/L | - | 17...13300 | 5.0...4000 | 2.5...2000 | 1.0...800 | 0.5...400 | 0.25...200 | 0.1...80 | SAC254 | Single wavelength | 1/m | - | 50...7300 | 15...2200 | 7.5...1100 | 3.0...440 | 1.5...220 | 0.75...110 | 0.3...44 | COD-SACeq**** | Single wavelength | mg/L | 1.46 | 75...10600 | 22...3200 | 11...1600 | 4.4...640 | 2.2...320 | 1.1...160 | 0.44...64 | BOD-SACeq***** | Single wavelength | mg/L | 0.48 | 24...3500 | 7.2...1050 | 3.6...525 | 1.44...210 | 0.72...105 | 0.36...52.5 | 0.15...21 | | TSSeq***** | Single wavelength | mg/L | 2.6 | 130...4300 | 40...1300 | 20...650 | 8.0...260 | 4...130 | 2.0...65 | 0.8...26 | | | | | | | | under laboratory conditions ** absorbance unit *** depending on the composition of the COD and BOD (sum parameter) **** based on KHP (Note: 100 mg/L COD-standard-solution corresponds to 85 mg/L KHP) ***** based on SiO2 Note: 1 mg/L N-NO3 corresponds to 4.43 mg/L NO3 1 mg/L N-NO2 corresponds to 3.28 mg/L NO2 | | | |
OPUS G2 InterfaceThe easiest and fastest way of sensor integration and configuration in any process control system or data logger via web browser: Let OPUS automatically monitor your processes and react to unexpected events or incidents with the optional "policing" feature of OPUS. |