Xylem wtw NitraVis 705 IQ Operating Manual
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Xylem wtw NitraVis 705 IQ Operating Manual

Optical sensor for nitrate
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OPERATING MANUAL
ba75951e03 05/2017
NitraVis 701 IQ
NitraVis 705 IQ
OPTICAL SENSOR FOR NITRATE

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Summary of Contents for Xylem wtw NitraVis 705 IQ

  • Page 1 OPERATING MANUAL ba75951e03 05/2017 NitraVis 701 IQ NitraVis 705 IQ OPTICAL SENSOR FOR NITRATE...
  • Page 2 NitraVis 70x IQ © Copyright 2017 Xylem Analytics Germany GmbH Printed in Germany. ba75951e03 05/2017...

  • Page 3: Table Of Contents

    NitraVis 70x IQ Contents Contents Overview ......... . 5 How to use this component operating manual .
  • Page 4 NitraVis 70x IQ Maintenance and cleaning ......34 Maintenance ........34 Sensor cleaning .

  • Page 5: Overview

    Overview NitraVis 70x IQ Overview How to use this component operating manual Structure of the IQ S IQ Sensor Net Operating Manual ENSOR operating manual System Operating Manual (Ring Binder) IQ Sensor MIQ Module MIQ Terminal Operating Operating Operating Manual Manual Manual Component Operating Manuals...

  • Page 6: Field Of Application

    Overview NitraVis 70x IQ Field of application The NitraVis 70x IQ (TSS) is an online sensor for the on-site determination of nitrate (and total suspended solids - TSS) in waste water treatment plants. The range of application comprises control, feedback control and monitoring. Measuring location NitraVis 701 IQ Aeration tank or inlet...

  • Page 7: Structure Of The Sensor Nitravis 70X Iq

    Overview NitraVis 70x IQ Structure of the sensor NitraVis 70x IQ The sensor has a light source (1), a measuring gap (3) to enable the contact of light with the measuring solution, and a detector (5) to measure the attenuated light beam.

  • Page 8: Safety

    Safety NitraVis 70x IQ Safety Safety information 2.1.1 Safety information in the operating manual This operating manual provides important information on the safe operation of the product. Read this operating manual thoroughly and make yourself familiar with the product before putting it into operation or working with it. The operating manual must be kept in the vicinity of the sensor so you can always find the infor - mation you need.

  • Page 9: Safe Operation

    Safety NitraVis 70x IQ Safe operation 2.2.1 Authorized use The authorized use of the NitraVis 70x IQ consists of its use as a sensor in the IQ S . Only the operation and running of the sensor according to the ENSOR instructions and technical specifications given in this operating manual is autho - rized (see chapter 8 T...

  • Page 10: Commissioning

    Commissioning NitraVis 70x IQ Commissioning IQ S system requirements ENSOR Software versions of The operation of the NitraVis 70x IQ requires the following software versions in the controller and the IQ S ENSOR terminal components  DIQ/S 28X Controller software: Version 3.72 or higher ...

  • Page 11: Installation

    Commissioning NitraVis 70x IQ Installation 3.3.1 Mounting the sensor NOTE The sensor is an optical precision instrument that should be protected against shocks. Make sure that the distances to the wall, bottom and other installation surroundings are sufficient. If necessary, protect the sensor from hitting with the protective ring provided.
  • Page 12 Commissioning NitraVis 70x IQ Vertical installation For vertical installation, mount the sensor in a position that allows interfering ele - ments in the measuring gap to escape with the current. In the case of vertical installation, the minimum flow rate is 0.2 m/s so the measuring gap is kept clean optimally.

  • Page 13: Mounting The Shock Protectors

    Commissioning NitraVis 70x IQ 3.3.2 Mounting the shock protectors The shock protectors consist of two rings, a cap and four cable ties. To mount the shock protectors, proceed as follows: Sensor with mounted shock protectors Fig. 3-4 Mounting the shock protectors Plug the cap (pos.

  • Page 14: Connecting The Sensor To The Iq Sensor Net

    Commissioning NitraVis 70x IQ 3.3.3 Connecting the sensor to the IQ S ENSOR Connection cable A sensor connection cable of the SACIQ or SACIQ SW type is required to connect the sensor. The cable is available in different lengths. Compared to the standard model SACIQ, the SACIQ SW sensor connection cable is optimized regarding its corrosion resistance in seawater and brackish water and adapted for use in conjunction with the NitraVis 70x IQ.
  • Page 15 Commissioning NitraVis 70x IQ Connecting the Take the protective caps off the plug connections of the sensor and the sensor to the sensor SACIQ (SW) sensor connection cable and keep them safe. connection cable Plug the socket of the SACIQ (SW) sensor connection cable onto the plug head connector of the sensor.

  • Page 16: Initial Commissioning

    Commissioning NitraVis 70x IQ Initial commissioning 3.4.1 General information CAUTION Never look into the measuring window or put objects into the measuring window during operation! The emitted UV radiation can damage the eyes! In the case of authorized use, inadvertent eye contact with the light beam is not possible.

  • Page 17: Settings

    Commissioning NitraVis 70x IQ 3.4.2 Settings Measuring cycle A measuring cycle consists of the cleaning procedure, the adjustment time for the measuring system and the determination of the measured value. The follow - ing graphic demonstrates the relevant settings: Measuring cycle Time Measuring interval...
  • Page 18 Commissioning NitraVis 70x IQ Menu item Settings Explanations Measuring location NitraVis 701 IQ Measurement location or application of Activation the sensor.   The possible measurement loca - Inlet  tions are displayed depending on the Outlet  currently set measuring mode. NitraVis 705 IQ ...
  • Page 19 Commissioning NitraVis 70x IQ Menu item Settings Explanations Response time t90 3 ... 60 min Response time of the signal smoothing. Depending on the sample matrix, mea - sured values can vary more or less strongly (e.g. due to foreign bodies or air bubbles).
  • Page 20 Commissioning NitraVis 70x IQ Menu item Settings Explanations Quit The display switches to the next higher level without storing the new settings. ba75951e03 05/2017...

  • Page 21: Measurement / Operation

    Measurement / Operation NitraVis 70x IQ Measurement / Operation Determination of measured values Fig. 4-1 Determination of measured values During a measurement, the absorbance spectrum of the test sample is recorded and set against the stored absorbance spectrum of a zero adjustment (measure - ment in ultrapure water).

  • Page 22: Measurement Operation

    Measurement / Operation NitraVis 70x IQ Measurement operation CAUTION Never look into the measuring window or put objects into the measuring window during operation! The emitted UV radiation can damage the eyes! In the case of authorized use, inadvertent eye contact with the light beam is not possible.
  • Page 23 Measurement / Operation NitraVis 70x IQ measured value at different points (see section 4.1):  User calibration (see section 4.3.2) Zero adjustment  Sensor check/ (see section 4.3.3). An overview diagram of the calibration procedures can be found on page 4 - 29. User calibration With a user calibration you compensate for the influence of the test sample.
  • Page 24 Measurement / Operation NitraVis 70x IQ Zero adjustment Sensor check (H2O dest.) While the just determines the current state of the Zero adjustment sensor, a can be used to compensate for changes of the Sensor check sensor. A zero adjustment can be required if, for example, the (H2O dest.) is not successful even after the sensor was thoroughly cleaned.

  • Page 25: User Calibration

    Measurement / Operation NitraVis 70x IQ 4.3.2 User calibration Calibration points The adjustment is carried out at one or two points within the measuring range. and value pairs A value pair is determined at each point. Each value pair consists of the raw value of the NitraVis 70x IQ sensor and the corresponding reference value.
  • Page 26 Measurement / Operation NitraVis 70x IQ Performing a user Proceed as follows if you want to perform a user calibration: calibration Bring the sensor into the measuring position. Switch to the measured value display with <M>. Use <> to select the NitraVis 70x IQ sensor. Maintenance condition: Call up calibration with <C>.
  • Page 27 Measurement / Operation NitraVis 70x IQ The entry of calibration values outside the measuring range leads to a calibration error. Default values are marked in bold. Menu item Settings Explanations Cal - # raw value 1 -10000,00 ... 0,00 ... 5000,00 Raw value of the first value pair (lower concentration).

  • Page 28: Sensor Check/Zero Adjustment

    Measurement / Operation NitraVis 70x IQ Zero adjustment 4.3.3 Sensor check/ NOTE The sensor check or Zero adjustment must be carried out under absolutely clean conditions. If you do not work carefully enough the Zero adjustment can deteriorate the measuring quality. Ultrapure water As ultrapure water exclusively use distilled or deionized water that is suitable for (H2O dist.)
  • Page 29 Measurement / Operation NitraVis 70x IQ Flowchart Cleaning the sensor Sensor check TEST: MEASUREMENT WINDOWS (H2O dist.) Clean the measurement windows Assessment number Rinse the measuring chamber -40 ... +40 < -40 or with ultrapure water several times > +40 Carry out a sensor check (H2O) After cleaning several times without significant change of...
  • Page 30 Measurement / Operation NitraVis 70x IQ Zero adjustment Preparing the Prepare the sensor check or as follows: sensor check or Zero adjustment Switch to the measured value display with <M>. Use <> to select the NitraVis 70x IQ sensor. Maintenance condition: Call up calibration with <C>.
  • Page 31 Measurement / Operation NitraVis 70x IQ Measuring chamber Sensor sleeve Fig. 4-4 Putting the sensor sleeve on the sensor Put the sensor in a horizontal position on a firm and vibration-free sur - face. Turn the filling opening of the sensor sleeve upward (Fig. 4-4). Rinse the measuring chamber with ultrapure water at least 3 times.
  • Page 32 Measurement / Operation NitraVis 70x IQ Up to this point, you can break off the calibration procedure at any time with the <ESC> key. The system continues to work with the old calibration data. The maintenance condition, however, has to be switched off again in any case.
  • Page 33 Measurement / Operation NitraVis 70x IQ If no valid zero adjustment is possible under the current conditions, you can restore the readiness for measurement by measuring with an older valid zero adjustment. Zero adjustment To do so, select the setting in the sensor settings Factory User (factory zero adjustment) or...

  • Page 34: Maintenance And Cleaning

    Maintenance and cleaning NitraVis 70x IQ Maintenance and cleaning Maintenance The UV-VIS- NitraVis 70x IQ sensor operates maintenance-free. Sensor cleaning 5.2.1 Cleaning agents and accessories Cleaning agents To clean the sensor, use the following cleaning agents only: Contamination Cleaning agents Water-soluble substances –...

  • Page 35: General Steps To Be Taken

    Maintenance and cleaning NitraVis 70x IQ 5.2.2 General steps to be taken Depending on the application site and the level of contamination of the sensor as well as the coming job, the cleaning procedure includes the following parts:  Every cleaning procedure starts with a basic cleaning. It removes tough grime such as incrustation of fouling matter, algae and biological deposits.

  • Page 36: Basic Cleaning

    Maintenance and cleaning NitraVis 70x IQ 5.2.3 Basic cleaning Steps of the basic Take the sensor out of the test sample and remove any solid matter cleaning deposits and incrustation of fouling matter manually with a brush or sponge. Wash the sensor down with warm tapwater (30 - 50 °C). Note: Do not use a pressure washer or steam blaster.

  • Page 37: Cleaning The Measuring Gap

    Maintenance and cleaning NitraVis 70x IQ 5.2.4 Cleaning the measuring gap To remove lime or grease deposits, use the flocked cleaning cards together with the following detergents: Contamination Cleaning agents Lime deposits Hydrochloric acid 5 % for analysis Grease deposits Mixture of isopropanol and water (approx.

  • Page 38: Spare Parts, Maintenance Equipment, Accessories

    Spare parts, maintenance equipment, accessories NitraVis 70x IQ Spare parts, maintenance equipment, accessories General Description Model Order no. accessories, Calibration sleeve VIS/CV 481 074 replacement parts 20 flocked cleaning cards for cleaning the VIS/CT 481 071 measuring gap Cleaning set: VIS C/SET 481 079 –...
  • Page 39 Spare parts, maintenance equipment, accessories NitraVis 70x IQ Mounting Description Model Order no. accessories Mounting set for horizontal installation with VIS Set/EH 481 073 EH/F 170 swing mounting assembly Set for the mounting of UVVIS/SAC/NOx VIS Set/F 481 080 sensors to the S 200 electrode floater Flow-through armature VIS FT-1 480 080...

  • Page 40: What To Do If

    What to do if... NitraVis 70x IQ What to do if... "----" display Cause Remedy (invalid measured – User calibration values entered – Correct the entry and enter once value) incorrectly again (section 4.3.2) Sensor check (H2O dest.) – * –...
  • Page 41 What to do if... NitraVis 70x IQ Drifting measured Cause Remedy values – Cleaning efficiency too low - mea - – Clean the measurement windows surement windows becoming (section 5.2.4) more and more contaminated – Use other cleaning method – Select different measurement loca - tion –...
  • Page 42 What to do if... NitraVis 70x IQ ERROR Display of Cause Remedy – Sensor not correctly connected – Check the assignment of the termi - nal connections – Load at a power supply module – Install another power supply module too high in the vicinity of the sensor –...

  • Page 43: Technical Data

    Technical data NitraVis 70x IQ Technical data Measurement characteristics Measuring principle Spectrophotometric Absorption measurement; integrated microprocessor elec - tronics, shielded 2-wire connection for power and data transmission. Light source Lamp type Xenon flashlamp Detector Photo diodes Wavelengths range 200 - 720 nm Measuring gap NitraVis 701 IQ 1 mm...

  • Page 44: Application Characteristics

    Technical data NitraVis 70x IQ Application characteristics Suitability and areas Municipal wastewater with a low proportion of industrial wastewater of application Measuring medium pH value 4 - 12 Flow rate < 3 m/s Temperature 0 °C ... + 45 °C (32 °F ...

  • Page 45: General Data

    Technical data NitraVis 70x IQ General data Dimensions hock protection: (in mm) Ø 96 Socket SACIQ... Ø 60 With shock protection: Ø 96 Weight Approx. 3.8 kg (without shock protectors and without sensor connec - tion cable) Approx. 4.8 kg (with shock protectors but without sensor connection cable) Connection Connection via SACIQ (SW) sensor connection cable...

  • Page 46: Electrical Data

    Technical data NitraVis 70x IQ Meter safety Applicable norms – EN 61010 - 1 – UL 61010 - 1 – CAN/CSA C22.2#61010 - 1 – IEC 62471 Test certificates cETLus, CE Conforms to ANSI/UL 61010-1 Certified to CAN/CSA C22.2#61010-1" 2001759 Electrical data Nominal voltage Max.

  • Page 47: Indexes

    Indexes NitraVis 70x IQ Indexes Explanation of the messages This chapter contains a list of all the message codes and related message texts that can occur in the log book of the IQ S system for the ENSOR NitraVis 70x IQ sensor. Information on the contents and structure of the log book and the structure of the message code is given in the L chapter of...

  • Page 48: Error Messages

    Indexes NitraVis 70x IQ 9.1.1 Error messages Message code Message text Sensor temperature too high! EA2541 * Check process and application Sensor temperature too low! EA3541 * Check process and application Optical measuring range exceeded EAF541 * Check process (TSS or measured value too high) * Select measuring location free of air bubbles * Remove foreign matter from measuring gap * Clean sensor...
  • Page 49 Indexes NitraVis 70x IQ Message code Message text Overflow optical measurement ES4541 * Execute zero ajustment Failure optical measurement: hardware ES5541 * Contact service Failure optical measurement: software ES6541 * Contact service Failure optical measurement: software BIOS ES7541 * Contact service ba75951e03 05/2017...

  • Page 50: Informative Messages

    Indexes NitraVis 70x IQ 9.1.2 Informative messages Message code Message text Calculation of negative concentrations IA23Ax * Perform user calibration or check user calibration Zero adjustment was successfully carried out IAC541 * Carry out sensor check * If required, carry out new user calibration Factory calibration has been activated.

  • Page 51: Status Info

    Indexes NitraVis 70x IQ Status info The status info is a coded piece of information on the current status of a sensor. Each sensor sends this status info to the controller. The status info of sensors consists of 32 bits, each of which can have the value 0 or 1. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 0 0 0 0 0 0 0...

  • Page 52: Appendix: Glossary

    Appendix: Glossary NitraVis 70x IQ Appendix: Glossary Absorbance (Absorp - Attenuation of the light beam when it penetrates the sample. tion) Adjusting To manipulate a measuring system so that the relevant value (e.g. the displayed value) differs as little as possible from the correct value or a value that is regarded as correct, or that the difference remains within the tolerance.
  • Page 53 Appendix: Glossary NitraVis 70x IQ Sample matrix Composition of the test sample of different individual substances. Test sample Designation of the test sample ready to be measured. Ultrapure water (H2O Ultrapure water is distilled or deionized water suitable for analysis dist.) purposes.
  • Page 54 Appendix: Glossary NitraVis 70x IQ ba75951e03 05/2017...
  • Page 56 Xylem also provides a leading portfolio of smart metering, network technologies and advanced analytics solutions for water, electric and gas utilities. In more than 150 countries, we have strong, long-standing relationships with customers who know us for our powerful combination of leading product brands and applications expertise with a strong focus on developing comprehensive, sustainable solutions.

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