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triOS OPUS Operating Instructions Manual

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OPUS
OPERATING INSTRUCTIONS

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  • Page 1 OPUS OPERATING INSTRUCTIONS...

  • Page 2: Table Of Contents

    OPUS // Table of contents Table of contents 1 General information 1.1 Introduction 1.2 Health and safety instructions 1.3 Warnings 1.4 User and operating requirements 1.5 Intended use 1.6 Disposal instructions 1.7 Certificates and approvals 2 Introduction 2.1 Product identification 2.2 Scope of delivery...
  • Page 3 6.3.1 Upload Recovery Point 6.3.2 Upload new calibration 6.4 Return shipment 7 Technical data 7.1 Technical specifications 7.2 Measuring ranges and detection limits OPUS 7.3 OPUS aero measuring ranges 7.4 Outer dimensions 7.5 Outer dimensions deep-sea version 8 Accessories 8.1 VALtub 8.2 Controller...

  • Page 4: General Information

    ) and a range of other parameters. OPUS aero is a variant of OPUS for the online measurement of nitrate and nitrite in waste water aeration tanks. By analyzing a complete spectrum, OPUS aero is able to provide reliable measurement values for ei-...

  • Page 5: Health And Safety Instructions

    Devices that emit strong electromagnetic waves can influence the measurement data or cause the sensor to malfunction. Avoid operating the following devices in the same room as the TriOS sensor: cell phones, cord- less phones, transceivers or other electrical devices that generate electromagnetic waves.

  • Page 6: Warnings

    • Do not cut, damage or modify the cable. Ensure that there are no heavy objects on the cable and that the cable does not kink. Ensure that the cable does not run close to hot surfaces. • If the sensor cable is damaged, it must be replaced with an original part by TriOS Mess- und Datentech- nik GmbH customer support.

  • Page 7: Intended Use

    The use of other media can damage the sensor. To use the OPUS in media other than those specified here, please contact TriOS Mess- und Da- tentechnik GmbH Technical Support (support@trios.de).

  • Page 8: Introduction

    There is also a type plate on the sensor with the following information, which you can use to clearly identify the product: The type plate also contains the product barcode, the TriOS Optical Sensors logo and the CE quality mark. Please note that the specifications given here are for illustrative purposes only and may vary depending on the product version.

  • Page 9: Measuring Principle And Structure

    The arrangement of these parts is shown schematically in the fig- ure above. A xenon flash lamp is used as a broadband light source in the OPUS. The light passes through the medium in the optical path and is partially absorbed by the medium. The spec- trometer records the remaining light with spectral resolution and determines its intensity I at different wave- lengths over a defined wavelength range.

  • Page 10: Spectral Analysis

    In the OPUS, the light emitted by the light source is first measured by a reference diode. After it has passed through the optical path and thus the measuring medium, where it is partially absorbed, it is measured by the spectrometer.
  • Page 11 OPUS // Introduction Linear spectral analysis OPUS Spectral analysis (LSA) on OPUS works with the complete absorption spectra from 200 to 360 nm. The ab- sorption spectra of the substances known and expected for the respective application are stored as an analy- sis group (LSA group / parameter set) on the sensor as a calibration.
  • Page 12 OPUS // Introduction Schematic representation of fit error On the right is a simplified representation of a measurement spectrum. The three colored rectangles represent dif- ferent substances, such as nitrate, nitrite and turbidity. An attempt is now made to fill the measure- ment spectrum with plausible values in or- der to obtain an approximation of the curve.

  • Page 13: Parameters

    For sum parameters such as COD, BOD, TOC and DOC, theoretical absorption spectra are stored, which TriOS has been able to determine as typical from many years of experience. A spectral analysis based on UV absorption can only use the UV light absorbing components of these parameters. For this reason, OPUS only uses equivalents and the parameters are given the suffix “eq”: COD...
  • Page 14 The individual pages are listed in the menu on the left. The name of the current page is highlighted in blue. Below the menu is the login area, which certified TriOS service technicians can use to authenticate them- selves. In most cases, problems can be solved here on site.
  • Page 15 (LSA group) are displayed under “Settings”. Data logger OPUS is equipped with a simple Data logger function that allows approx. 42,000 measurements to be stored. This allows the OPUS to operate almost completely autonomously over a very long period of time. However, a sufficient power supply must be ensured.
  • Page 16 Settings The data format in which the data is saved can be selected here. Two options are available: “TriOS Stan- dard” and “CSV” (Comma Separated Values). TriOS Standard" is configured by default. In this case, parameters such as substance concentrations, sum parameters and absorbance values are saved in CSV and spectra in TriOS DAT format.
  • Page 17 OPUS // Introduction Measurement The “Measurement” page shows the results of the last measurement carried out, as well as the settings for the interval for automatic measurements. Parameters The results calculated during the last measurement are displayed under “Parameters”. It is also possible on this page to scale the measured values to the desired parameter using entries for “Offset”...
  • Page 18 OPUS // Introduction Spectrum The currently measured absorption spectrum is displayed in the “Spectrum” sub-item. By pressing the “Download” button, this spectrum is downloaded to the computer as a CSV file. Settings In the “Settings” sub-item, settings for the automatic measurement can be made after pressing the “Edit” but- ton.
  • Page 19 OPUS // Introduction Peripherals In the “Peripherals” submenu, the interface can be configured, a protocol selected and the Modbus address changed after pressing the “Edit” button. D01-049en202504 OPUS Manual...
  • Page 20 OPUS // Introduction The factory settings are: Hardware mode: RS-485 Protocol: Modbus RTU Baud rate: 9600 Flow control: None Parity: None Data bits: Stop bits: System The “System” page is used to manage the sensor. Tasks on this page include uploading a calibration file and downloading the current calibration as a restore point.

  • Page 21: Login

    It is useful to make this file available to TriOS Technical support for error analysis. Any failures and errors are saved here internally and with a date stamp. 2.5 Login To use the service function, you need a login and a password. You will receive this when you attend a TriOS training course. D01-049en202504 OPUS Manual...

  • Page 22: Commissioning

    3.1 Electrical installation OPUS is supplied with either a fixed cable or a SubConn 8pin connector. 3.1.1 SubConn-8pin connector Plug the connector end of the connection cable onto the connector plug by aligning the pins with the slots on the cable.

  • Page 23: Fixed Cable With M12 Industrial Plug

    3.2 Interfaces 3.2.1 Serial interface OPUS provides two lines for digital serial communication with a control device. It is equipped with a config- urable digital serial interface. The RS-232 (also EIA 232) and RS-485 (also EIA 485) standards are support- ed and can be switched between via the web interface.
  • Page 24 • Modbus RTU (factory setting) • IEEE 488.2 (SCPI) • ASCII Output A detailed description of the Modbus RTU protocol for OPUS can be found in the appendix. Baud rate Specifies the transmission speed. The following options are available: • 1200 •...

  • Page 25: Network

    • The following properties are also available in the Modbus RTU protocol: ° Address: This is the slave address for Modbus communication. It identifies the sensor in the bus sys- tem and must be unique. The default for OPUS is 1 (0x01). 3.2.2 Network The IEEE 802.3 10BASE-T compliant Ethernet interface is used as the universal interface for the new Tri-...
  • Page 26 Network with a single G2 sensor The easiest way to establish a connection with the OPUS is with the G2 InterfaceBox. It is used both to es- tablish the connection and to supply power to the sensor and can be used universally for all TriOS G2 sen- sors.
  • Page 27 In the sensor network, each sensor requires its own G2 InterfaceBox for the power supply. Like every G2 sensor, OPUS supplies a simple DHCP server and a simple DNS server, which are configured exclusively for the direct individual connection - as described in the previous section. For a complex sensor network, it is necessary for these servers to be provided by the user.
  • Page 28 OPUS // Commissioning OPUS can only be used from one Ethernet-capable device at a time. If several sensors are used in a network, the web interface can be accessed via the host name http://opus_7XXX/ (7XXX is the serial number) or via the IP. Ask your network administrator for advice.

  • Page 29: Application

    OPUS // Application 4 Application OPUS (aero) can be operated with all TriOS controllers. Instructions for correct installation can be found in the controller manual. NOTICE Never transport the sensor just hanging on the cable. 4.1 Normal operation 4.1.1 Immersion mode For immersion operation, the sensor can be completely or partially immersed in the water/measuring medi- um.

  • Page 30: Cleaning System

    4.1.2 Cleaning system OPUS (aero) and all other sensors from TriOS Mess- und Datentechnik GmbH are equipped with an innova- tive anti-fouling technology to prevent contamination and dirt on the optical window: nano-coated windows in combination with a compressed air cleaning system.

  • Page 31: Float

    NOTICE The optimum pressure for compressed-air cleaning is between 3 and 6 bar. The total length of the hose should not exceed 25 meters. Suitable hoses are available from Trios (polyurethane, 6 mm outer diameter, 4 mm inner diameter) To connect the hose, simply push the hose into the appropriate connection. To disconnect it again, push the blue locking ring towards the connection and pull the hose out.

  • Page 32: Bypass Installation

    4.2 Bypass installation With the optional FlowCell (flow cell), OPUS can be installed as a bypass. Together with the flow cell, a pan- el is available on which OPUS and the flow cell can be easily mounted at an optimum angle.
  • Page 33 When the position of the sensor is correct, install the two end caps and secure them again with the eight screws. The flow cell and the OPUS should be installed at an angle of between 15° and 75° to the horizontal so that neither air bubbles nor sinking dirt particles interfere with the measurement. After installation, check for leaks and a free flow of water.

  • Page 34: Pipe Installation

    4.3 Pipe installation OPUS can be mounted directly into the pipe (either with the special flange version of the sensor or customer installations on site). In case of a grounded pipe, no additional grounding of the sensor housing is required as long as no insulation is mounted between the pipe and the sensor.
  • Page 35 OPUS // Application Pipe connection DN80 to DIN 11851 with compressed air connection D01-049en202504 OPUS Manual...

  • Page 36: Calibration

    Therefore, the SQI must be adapted to the application in order to be effective. To prevent false alarms, the threshold value for the SQI is set by default when the OPUS is delivered so that the measurements are always evaluated at 100%.
  • Page 37 OPUS // Calibration In the “Measurement” menu item in the “Parameters” sub-item, individual measurements can be triggered using the “Measure now!” button. button and all available parameters can be scaled after pressing the “Edit” button. The formula on which the calculation of the scaled measured value with scaling factor and offset is based is shown in the top line.
  • Page 38 If several laboratory values are available, all laboratory values should be entered in the graph. In this case, offset = 0 should also be assumed. The gradient of the straight line is the scaling factor. All TriOS controllers have the option of setting scaling factors and offset values for measurement parame- ters.

  • Page 39: Measurement Properties

    Measuring ranges and detection limits of the scaled parameters depend on the scaling factor! 5.3 Measurement properties Ideally, the optical path of the OPUS is selected so that the absorption at 210 nm (Abs210) is not greater than 2.5 AU and the absorption at 360 nm (Abs360) is not greater than 0.5 AU.

  • Page 40: Nitrate And Nitrite

    OPUS // Calibration 5.3.1 Nitrate and nitrite The absorption spectra of nitrate and nitrite are very similar. To ensure that nitrite can be measured as well as nitrate, the absorbances at 210 and 360 nm must remain within the specified limits. This can also be en- sured if the concentrations of nitrate and turbidity (see section 5.3.2) remain within the intended limits.

  • Page 41: Seawater, Brackish Water

    OPUS // Calibration 5.3.2 Seawater, brackish water Up to 1 g/l sea salt (1 PSU) in natural waters at 10 mm path the disturbances are still negligible. Limit values for sea salt Path [mm] Sea salt [g/L] D01-049en202504 OPUS Manual...

  • Page 42: Turbidity

    OPUS // Calibration 5.3.3 Turbidity There are correlations between turbidity and absorption, although these are highly dependent on the size and type of particles. Up to 200 NTU turbidity at 10 mm path, the interferences should still be negligible. The absorption at 360 nm should remain below 0.5 AU. If it is above 0.8 AU at 360 nm, the measured values can deviate significantly or can no longer be calculated (NaN).

  • Page 43: Unknown Substances

    Substances that absorb UV light but are not included in the LSA group (calibration) can significantly interfere with the measurement result. Under certain circumstances, measured values can no longer be calculated (NAN or permanently zero). If this is the case, contact TriOS Technical support (see also Chap. 6.3.2). D01-049en202504 OPUS Manual...

  • Page 44: Malfunction And Maintenance

    Under no circumstances should the sensor be cleaned with hydrochloric acid. Even very low con- centrations can damage stainless steel components. In addition, TriOS Mess- und Datentechnik GmbH warns against the use of other strong acids, even if the sensor has a titanium housing.

  • Page 45: Cleaning The Measurement Window

    6.1.2 Cleaning the measurement window You can clean the window with a lint-free cloth, a clean paper towel or a special optical paper from TriOS Mess- und Datentechnik GmbH with a few drops of acetone. Make sure that you do not touch the window...
  • Page 46 The zero valueof the OPUS is checked via the web interface. To access the web interface, you need the G2 InterfaceBox and an Ethernet-capable device with a web browser, such as a notebook.
  • Page 47 OPUS // Malfunction and maintenance Immerse the sensor in the vessel sufficiently filled with ultrapure water so that the measuring windows are completely covered with water. Wait 10 - 15 minutes. During this time, hidden dirt can be removed from the sensor.
  • Page 48 OPUS // Malfunction and maintenance Limit values for deciding whether a new zero line must be drawn: • 0.1 AU at 360 nm • 0.2 AU at 210 nm Below these values, a new zero line does not need to be drawn unless clear structures are visible that inter- fere with the measurement.

  • Page 49: Troubleshooting

    If a previously downloaded Recovery Point is to be uploaded, this can be done using the “Upload” function. 6.3.2 Upload new calibration If service is required, a few spectra should first be sent to TriOS Technical support (see also section 2.4 Data logger and section 5.3.3).

  • Page 50: Return Shipment

    OPUS // Malfunction and maintenance 6.4 Return shipment Please note the procedure for your return. If you wish to return the sensor or the device, please contact technical support first. To ensure a smooth re- turn process and to avoid incorrect shipments, every return shipment must first be reported to technical sup- port.

  • Page 51: Technical Data

    0.3 mm, 1 mm, 2 mm, 5 mm, 10 mm, 20 mm, 50 mm Optical path OPUS aero 0.3 mm, 1 mm, 2 mm Parameters OPUS see "Measuring ranges and detection limits OPUS", page 53 Chap. OPUS aero Nitrate NO -N or Nitrate NO -N+NitriteNO Measuring OPUS see "Measuring ranges and detection limits OPUS", page 53 Chap.
  • Page 52 OPUS // Technical data Maintenance effort ≤ 0.5 h/month typical Calibration/maintenance in- 24 months terval System compatibility Modbus RTU Warranty period 1 year (EU: 2 years) INSTALLATION with Sub- 30 bar conn* Max. pres- with fixed 3 bar sure cable in flow unit 1 bar, 2...4 L/min...

  • Page 53: Measuring Ranges And Detection Limits Opus

    OPUS // Technical data 7.2 Measuring ranges and detection limits OPUS The following tables provide an overview of the measuring ranges of the various parameters as a function of the path length. These values apply to individual substances in ultrapure water under laboratory conditions.
  • Page 54 OPUS // Technical data Path length 10 mm Path Parameters Measuring Unit Mea- Detec- Limit of Preci- Accuracy* (mm) principle suring tion quan- sion mea- range limit tifica- sure- tion ment Nitrate N- spectral mg/L 0...10 0,03 0,05 0,005 ± (5 % + 0,1)
  • Page 55 OPUS // Technical data D01-049en202504 OPUS Manual...

  • Page 56: Opus Aero Measuring Ranges

    OPUS // Technical data 7.3 OPUS aero measuring ranges Path (mm) Nitrate N-NO Nitrate N-NO 2,4...120 4,4...220 0,7...36 1,3...67 0,35...18 0,65...33,5 D01-049en202504 OPUS Manual...

  • Page 57: Outer Dimensions

    OPUS // Technical data 7.4 Outer dimensions D01-049en202504 OPUS Manual...
  • Page 58 OPUS // Technical data D01-049en202504 OPUS Manual...
  • Page 59 OPUS // Technical data D01-049en202504 OPUS Manual...

  • Page 60: Outer Dimensions Deep-Sea Version

    OPUS // Technical data 7.5 Outer dimensions deep-sea version D01-049en202504 OPUS Manual...

  • Page 61: Accessories

    OPUS // Accessories 8 Accessories 8.1 VALtub VALtub is used for the validation of TriOS photometers. The sample can be filled conve- niently and leak-proof and analyzed without im- mersing the sensor. The VALtub is also used to check and recalcu- late the zero values.

  • Page 62: Tribox Mini

    4...20 mA outputs and represent a cost-effective alternative to analog measuring points. The TriBox mini is compatible with all TriOS sen- sors. All stored measured values and diagnostic data can be read out via an integrated web browser.

  • Page 63: Warranty

    OPUS // Warranty 9 Warranty The warranty period for our devices within the EU and the USA is 2 years from the date of invoice. Outside the EU it is 1 year. Excluded from the warranty are all normal consumables (depending on the product, e.g.

  • Page 64: Technical Support

    OPUS // Technical support 10 Technical support If you have a problem with a TriOS sensor / a TriOS device, please contact TriOS technical support. We recommend sending in sensors every 2 years for maintenance and calibration. To do this, please request an RMA number from technical support.

  • Page 65: Contact Us

    OPUS // Contact us 11 Contact us We are constantly working on improving our devices. Please visit our website for the latest news. If you have found a fault in one of our devices or programs or would like additional functions, please contact Technical Support: support@trios.de...

  • Page 66: Index

    OPUS // Index 12 Index absorption coefficient....................................9 Absorption limit values....................................40 Biological safety......................................5 Browser........................................13 CE Declaration of Conformity..................................68 Certificates and approvals................................... 7 Cleaning system......................................30 Cleaning the housing....................................44 Cleaning the measurement window................................45 Compressed-air cleaning................................... 31 Contact us........................................
  • Page 67 OPUS // Index Nano-coating......................................30 nitrate......................................11, 12, 40 nitrite........................................12, 40 offset......................................37, 37, 38 operating requirements....................................6 Product identification....................................8 Reagents........................................5 Return shipment......................................50 Scope of delivery......................................8 sea salt........................................41 Spectral analysis......................................11 SQI..........................................36 SubConn-8pin connector................................... 22 Technical support....................................

  • Page 68: Appendix

    Bürgermeister-Brötje-Str. 25 D- 26180 Rastede Konformitätserklärung Declaration of Conformity Déclaration de Conformité Die TriOS GmbH bescheinigt die Konformität für das Produkt The TriOS GmbH herewith declares conformity of the product TriOS GmbH déclare la conformité du produit Bezeichnung OPUS Product name...

  • Page 69: Modbus Rtu

    Software version This Modbus protocol refers to software version 1.3 and higher. Serial interface On delivery, the OPUS sensor is configured to RS485 with the following settings: • Baud rate: 9600 bps • Data bits: 8 • Stop bits: 1 •...
  • Page 70 Address Data Data type Description type Modbus Server Ad- Uint16 The Modbus server address of the OPUS sensor. Permit- dress ted addresses: 1...247 Measurement time- Uint16 The time in [10-1 s] that the currently active measure- ment process will continue (see also “Trigger measure- ment”)
  • Page 71 OPUS // Appendix Designation Address Data Data type Descrip- type tion HA concentration / scaled concentration 1010 / 1510 Float Salinity concentration / scaled concentration 1012 / 1512 Float TOCeq concentration / scaled concentration 1014 / 1514 Float TSSeq concentration / scaled concentration...
  • Page 72 The number of value pairs in the spectrogram. The num- ber varies from sensor to sensor. In the case of a UV OPUS, the spectrogram is limited to the range [200nm ; 360nm], in the case of a UV/VIS OPUS to the range [200nm ; 720nm]. Abscissa...
  • Page 73 OPUS // Appendix 0x00 0X00 1 0x00 D01-049en202504 OPUS Manual...
  • Page 74 TriOS Mess- und Datentechnik GmbH Bgm.-Brötje-Str. 25 · 26180 Rastede · Deutschland Tel +49 (0)4402 69670-0 Fax +49 (0)4402 69670-20 info@trios.de www.trios.de...

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