TriOS OPUS UV Spectral Sensor

OPUS is a full spectrum sensor that can deliver reliable readings for nitrate, nitrite, COD, BOD, DOC, TOC, and a number of other parameters.

Features

  • Internal compensation for temperature, turbidity, and organic substances
  • RS-485 Modbus RTU output for integration with data collection platforms
  • Optional W55 wiper cleans optics & reduces maintenance intervals
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ImagePart#Product DescriptionPriceStockOrder
TriOS OPUS UV Spectral Sensor12S401000 OPUS UV spectral sensor with 10mm path length & stainless steel housing, 10m cable with M12 connector
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TriOS OPUS UV Spectral Sensor 12S401010 OPUS UV spectral sensor with 10mm path length & stainless steel housing, MCBH-8-MP connector
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TriOS OPUS UV Spectral Sensor 12S402010 OPUS UV spectral sensor with 10mm path length & titanium housing, MCBH-8-MP connector
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TriOS OPUS UV Spectral Sensor 12S301000 OPUS UV spectral sensor with 5mm path length & stainless steel housing, 10m cable with M12 connector
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TriOS OPUS UV Spectral Sensor 12S301010 OPUS UV spectral sensor with 5mm path length & stainless steel housing, MCBH-8-MP connector
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TriOS OPUS UV Spectral Sensor 12S302010 OPUS UV spectral sensor with 5mm path length & titanium housing, MCBH-8-MP connector
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TriOS OPUS UV Spectral Sensor 12S201000 OPUS UV spectral sensor with 2mm path length & stainless steel housing, 10m cable with M12 connector
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TriOS OPUS UV Spectral Sensor 12S201010 OPUS UV spectral sensor with 2mm path length & stainless steel housing, MCBH-8-MP connector
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TriOS OPUS UV Spectral Sensor 12S202010 OPUS UV spectral sensor with 2mm path length & titanium housing, MCBH-8-MP connector
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TriOS OPUS UV Spectral Sensor
12S401000
OPUS UV spectral sensor with 10mm path length & stainless steel housing, 10m cable with M12 connector
Usually ships in 1-2 weeks
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TriOS OPUS UV Spectral Sensor
12S401010
OPUS UV spectral sensor with 10mm path length & stainless steel housing, MCBH-8-MP connector
Usually ships in 1-2 weeks
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TriOS OPUS UV Spectral Sensor
12S402010
OPUS UV spectral sensor with 10mm path length & titanium housing, MCBH-8-MP connector
Usually ships in 1-2 weeks
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TriOS OPUS UV Spectral Sensor
12S301000
OPUS UV spectral sensor with 5mm path length & stainless steel housing, 10m cable with M12 connector
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TriOS OPUS UV Spectral Sensor
12S301010
OPUS UV spectral sensor with 5mm path length & stainless steel housing, MCBH-8-MP connector
Usually ships in 1-2 weeks
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TriOS OPUS UV Spectral Sensor
12S302010
OPUS UV spectral sensor with 5mm path length & titanium housing, MCBH-8-MP connector
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TriOS OPUS UV Spectral Sensor
12S201000
OPUS UV spectral sensor with 2mm path length & stainless steel housing, 10m cable with M12 connector
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TriOS OPUS UV Spectral Sensor
12S201010
OPUS UV spectral sensor with 2mm path length & stainless steel housing, MCBH-8-MP connector
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TriOS OPUS UV Spectral Sensor
12S202010
OPUS UV spectral sensor with 2mm path length & titanium housing, MCBH-8-MP connector
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ImagePart#Product DescriptionPriceStockOrder
TriOS OPUS River Calibrations 20S101000 OPUS river calibration for COD
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TriOS OPUS River Calibrations 20S101100 OPUS river calibration for COD & BOD
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TriOS OPUS River Calibrations 20S110000 OPUS river calibration for N-NO3
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TriOS OPUS River Calibrations 20S112000 OPUS river calibration for N-NO3 & DOC
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TriOS OPUS River Calibrations 20S110100 OPUS river calibration for N-NO3 & BOD
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TriOS OPUS River Calibrations 20S111000 OPUS river calibration for N-NO3 & COD
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TriOS OPUS River Calibrations 20S113000 OPUS river calibration for N-NO3 & TOC
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TriOS OPUS River Calibrations 20S114000 OPUS river calibration for N-NO3, COD & DOC
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TriOS OPUS River Calibrations 20S111100 OPUS river calibration for N-NO3, COD & BOD
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TriOS OPUS River Calibrations 20S115000 OPUS river calibration for N-NO3, COD & TOC
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TriOS OPUS River Calibrations 20S115100 OPUS river calibration for N-NO3, COD, TOC & BOD
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TriOS OPUS River Calibrations 20S130000 OPUS river calibration for N-NO3 & N-NO2
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TriOS OPUS River Calibrations 20S131000 OPUS river calibration for N-NO3, N-NO2 & COD
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TriOS OPUS River Calibrations 20S131100 OPUS river calibration for N-NO3, N-NO2, COD & BOD
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TriOS OPUS River Calibrations 20S132000 OPUS river calibration for N-NO3, N-NO2 & DOC
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TriOS OPUS River Calibrations 20S134000 OPUS river calibration for N-NO3, N-NO2, COD & DOC
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TriOS OPUS Seawater Calibrations 20S510000 OPUS seawater calibration for NO3
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TriOS OPUS Seawater Calibrations 20S512000 OPUS seawater calibration for NO3 & DOC
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TriOS OPUS Seawater Calibrations 20S510010 OPUS seawater calibration for NO3 & HS-
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TriOS OPUS Seawater Calibrations 20S512010 OPUS seawater calibration for NO3, DOC & HS-
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TriOS OPUS Seawater Calibrations 20S500010 OPUS seawater calibration for HS-
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TriOS W55 Mechanical Wiper 02A100008 W55 mechanical wiper system (requires wiper axis & blade set), 10m cable with M8 connector & 1.5m pigtail adapter
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TriOS Wiper Axis & Blade Sets 02A100608 Wiper axis & 5 blade set for 10mm path length
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TriOS Wiper Axis & Blade Sets 02A100508 Wiper axis & 5 blade set for 5mm path length
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TriOS Wiper Axis & Blade Sets 02A100208 Wiper axis & 5 blade set for 2mm path length
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TriOS Wiper Protective Cage 00P100010 Wiper protective cage
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TriOS G2 Interface Box 11C000000 G2 interface box without Wi-Fi, M12 connector input
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TriOS VALtub 10A300000 VALtub for 1mm to 10mm path length
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TriOS SDI-12 Converter 11C100001 SDI-12 converter
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TriOS M12 to Bare Wire Cable Adapter 50A034132 M12 to bare wire cable adapter, 1.5m
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TriOS MCIL-8-FS to M12 Cable Assembly 50A013100 MCIL-8-FS to M12 cable assembly, 2m
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TriOS MCIL-8-FS to M12 Cable Assembly 50A013300 MCIL-8-FS to M12 cable assembly, 10m
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TriOS MCIL-8-FS to M12 Cable Assembly 50A013400 MCIL-8-FS to M12 cable assembly, 15m
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TriOS MCIL-8-FS to M12 Cable Assembly 50A013500 MCIL-8-FS to M12 cable assembly, 25m
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NexSens MCIL Female Cable Assemblies MCIL-8-FS-2 Female 8-pin wet mateable cable assembly with locking sleeve, 2m
$270.00
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NexSens MCIL Female Cable Assemblies MCIL-8-FS-10 Female 8-pin wet mateable cable assembly with locking sleeve, 10m
$350.00
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NexSens MCIL Female Cable Assemblies MCIL-8-FS-15 Female 8-pin wet mateable cable assembly with locking sleeve, 15m
$400.00
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NexSens MCIL Female Cable Assemblies MCIL-8-FS-25 Female 8-pin wet mateable cable assembly with locking sleeve, 25m
$500.00
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TriOS OPUS River Calibrations
20S101000
OPUS river calibration for COD
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TriOS OPUS River Calibrations
20S101100
OPUS river calibration for COD & BOD
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TriOS OPUS River Calibrations
20S110000
OPUS river calibration for N-NO3
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TriOS OPUS River Calibrations
20S112000
OPUS river calibration for N-NO3 & DOC
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TriOS OPUS River Calibrations
20S110100
OPUS river calibration for N-NO3 & BOD
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TriOS OPUS River Calibrations
20S111000
OPUS river calibration for N-NO3 & COD
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TriOS OPUS River Calibrations
20S113000
OPUS river calibration for N-NO3 & TOC
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TriOS OPUS River Calibrations
20S114000
OPUS river calibration for N-NO3, COD & DOC
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TriOS OPUS River Calibrations
20S111100
OPUS river calibration for N-NO3, COD & BOD
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TriOS OPUS River Calibrations
20S115000
OPUS river calibration for N-NO3, COD & TOC
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TriOS OPUS River Calibrations
20S115100
OPUS river calibration for N-NO3, COD, TOC & BOD
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TriOS OPUS River Calibrations
20S130000
OPUS river calibration for N-NO3 & N-NO2
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TriOS OPUS River Calibrations
20S131000
OPUS river calibration for N-NO3, N-NO2 & COD
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TriOS OPUS River Calibrations
20S131100
OPUS river calibration for N-NO3, N-NO2, COD & BOD
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TriOS OPUS River Calibrations
20S132000
OPUS river calibration for N-NO3, N-NO2 & DOC
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TriOS OPUS River Calibrations
20S134000
OPUS river calibration for N-NO3, N-NO2, COD & DOC
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TriOS OPUS Seawater Calibrations
20S510000
OPUS seawater calibration for NO3
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TriOS OPUS Seawater Calibrations
20S512000
OPUS seawater calibration for NO3 & DOC
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TriOS OPUS Seawater Calibrations
20S510010
OPUS seawater calibration for NO3 & HS-
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TriOS OPUS Seawater Calibrations
20S512010
OPUS seawater calibration for NO3, DOC & HS-
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TriOS OPUS Seawater Calibrations
20S500010
OPUS seawater calibration for HS-
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W55 mechanical wiper system (requires wiper axis & blade set), 10m cable with M8 connector & 1.5m pigtail adapter
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Wiper axis & 5 blade set for 10mm path length
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TriOS Wiper Axis & Blade Sets
02A100508
Wiper axis & 5 blade set for 5mm path length
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TriOS Wiper Axis & Blade Sets
02A100208
Wiper axis & 5 blade set for 2mm path length
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Wiper protective cage
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G2 interface box without Wi-Fi, M12 connector input
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VALtub for 1mm to 10mm path length
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SDI-12 converter
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TriOS M12 to Bare Wire Cable Adapter
50A034132
M12 to bare wire cable adapter, 1.5m
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TriOS MCIL-8-FS to M12 Cable Assembly
50A013100
MCIL-8-FS to M12 cable assembly, 2m
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TriOS MCIL-8-FS to M12 Cable Assembly
50A013300
MCIL-8-FS to M12 cable assembly, 10m
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TriOS MCIL-8-FS to M12 Cable Assembly
50A013400
MCIL-8-FS to M12 cable assembly, 15m
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TriOS MCIL-8-FS to M12 Cable Assembly
50A013500
MCIL-8-FS to M12 cable assembly, 25m
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NexSens MCIL Female Cable Assemblies
MCIL-8-FS-2
Female 8-pin wet mateable cable assembly with locking sleeve, 2m
Usually ships in 3-5 days
$270.00
NexSens MCIL Female Cable Assemblies
MCIL-8-FS-10
Female 8-pin wet mateable cable assembly with locking sleeve, 10m
Usually ships in 3-5 days
$350.00
NexSens MCIL Female Cable Assemblies
MCIL-8-FS-15
Female 8-pin wet mateable cable assembly with locking sleeve, 15m
Usually ships in 3-5 days
$400.00
NexSens MCIL Female Cable Assemblies
MCIL-8-FS-25
Female 8-pin wet mateable cable assembly with locking sleeve, 25m
Usually ships in 3-5 days
$500.00

OPUS is a spectral sensor for the online measurement of nitrogen and carbon compounds. By analyzing a full spectrum, OPUS is able to deliver reliable readings for N-NO3, N-NO2, organic ingredients (COD, BOD, DOC, TOC) and a number of other parameters.

Substances with a specific absorption spectrum, such as nitrate and nitrite, can be used directly as elements of the spectral analysis group. For sum parameters, such COD, BOD, TOC and DOC, theoretical absorption spectra that TriOS has been able to determine over the course of its many years of experience have been stored. Using these parameters, a spectral analysis based on UV absorption can use only the portion that absorbs UV light. Therefore, the OPUS uses only equivalents, and the parameters have the “eq” suffix appended to them, (i.e. CODeq, BODeq, TOCeq and DOCeq). The spectral analysis group also contains correction spectra that take into account, for example, the effects of turbidity. Because the entire absorption spectrum is detected, parameters such as SAC254 (spectral absorption coefficient at 254nm) can also be calculated.

The OPUS 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 wiper reduces maintenance intervals by cleaning the optics before each measurement.

Light source
Xenon flash lamp
Detector
High-end miniature spectrometer
256 Channels
200 to 360 nm
0.8 nm/pixel
Measurement principle
Attenuation, spectral analysis
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 below
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 consumption
≤ 8 W
Power supply
12...24 VDC (± 10 %)
 
 
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

 

 

Parameter
Measurement Principle
Unit
Factor
 
Path Length (mm)
 
 
 
 
0.3
1
2
5
10
20
50
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
 
  • (1) OPUS UV Spectral Sensor
  • (1) Fitting for compressed air cleaning
  • (1) Calibration certificate
  • (1) Operations manual
  • Note: Included parameters are temperature, SAC254, and TSS. Addtional parameters must be ordered separately as calibrations (see Accessories tab).
Questions & Answers
No Questions
Please, mind that only logged in users can submit questions

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