NitraVis 70x IQ TS
Contents
1. 3 1 3 2 Scope of delivery of the NitraVis 70x IQ TS 3 1 3 8 Installation 00 00 ccs 3 2 3 3 1 Mounting the sensor 5 3 2 3 3 2 Mounting the shock protectors 3 4 3 3 3 Connecting the sensor to the IQ SENSOR NET 3 5 3 4 Initial commissioning 0 000002 eee eee ee 3 7 3 4 1 General information 3 7 3 42 Sensor structure 200055 3 8 3 4 8 Settings for the main sensor 3 9 3 4 4 Settings of the secondary sensor TSS measure MGM 2viwest at wedin XA ePi 3 11 Measuring Operation 0000 cece aee 4 1 4 1 Determination of measured values 4 1 4 2 Measuring operation sllllssss 4 2 43 Calibration 0 0 00 4 3 4 3 4 Overview 000 cee 4 3 4 3 2 Usercalibration 0 4 5 4 3 3 Sensor check Zero adjustment 4 8 ba75950e02 11 2012 NitraVis 70x IQ TS 5 Maintenance and cleaning 5 1 5 1 Maintenance der xu ia das 5 1 5 2 Sensor cleaning 000 cece eee eee ees 5 1 5 2 1 Cleaning agents and accessories 5 1 5 2 2 General steps to be taken 5 2 5 2 3 Basic cleaning c sue ioc s tn IPS anaes oe 5 3 5 2 4 Cleaning the measuring gap 5 4 6 Spare parts maintenance equipment accessories 6 1 T MWhabiodoi exu priu eru EIE XE 7 1 8 Tech2. D Heasuring mode Heasuring range Cal raw value 1 Cal ref value 1 Cal rau value 2 Cal ref value Hain sensor Save and quit Quit Select setting TSS 0 20 0 g l n a 0 00 10 00 10 00 NitraWis SNO30390001 Fig 3 7 140 Settings of sensors and diff sensors Secondary sensor ba75950e02 11 2012 NitraVis 70x IQ TS Measuring Operation 4 Measuring Operation 4 1 Determination of measured values Physical sensor series number xxx Absorbance spectrum of zero adjustment Absorbance spectrum of measurement Secondar sensor software Second sensor meas mode algorithm Secondary sensor raw value User calibration data of secondary sensor Meas value of sec sensor Main sensor meas mode algorithm Main sensor raw value User calibration data of main sensor Meas value of main sensor IQ Sensor Net 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 measurement in ultrapure water The algorithm for the calculation depends on the selected application and or the measuring location The resulting raw value can be adjusted to an independent reference measurement with the aid of a so called user calibration ba75950e02 11 2012 Measuring Operation NitraVis 70x IQ TS
3. Measured value display Factors affecting the measured value 4 2 Measuring operation CAUTION Never look into the measuring window or put objects into the measur ing 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 Terminal PC 26 Oct 2011 11 03 gi A COD Values Location 010 TEERTENETE ke 15 01 gil 13 81 amp i Raw value TSS 03090001 identifiable by Hext sensor Display Options E Measured value Fig 4 2 NitraVis 70x IQ TS in the measured value display with main and secondary Sensor The following factors can adversely affect the measurement quality The measuring gap is not sufficiently filled and flowed through by the test sample Foreign bodies and air bubbles are in the measuring gap Extraordinary changes interferences of the sample matrix Contaminated measurement windows due to difficult waste water matrix Damaged measuring windows Lacking quality of the zero adjustment e g due to contaminated ultrapure water The user calibration is not representative or erroneous ba75950e02 11 2012 NitraVis 70x IQ TS Measuring Operation 4 3 Calibration 4 3 1 Overview In the delivery condition the sensor is precalibrated and ready to mea sure see section 3 4 1 There are two types of calibration that are included int
4. a xylem brand Operating manual IQ SENSOR NET NitraVis 70x IQ TS NitraVis 701 IQ TS Optical sensor for the NitraVis 705 IQ TS spectral determination of nitrate and total suspended solids TSS ba75950e02 11 2012 NitraVis 70x IQ TS For the most recent version of the manual please visit il www ysi com Contact YSI 1725 Brannum Lane Yellow Springs OH 45387 USA Tel 1 937 767 7241 800 765 4974 Email environmental ysi com Internet www ysi com Copyright 2012 Xylem Inc ba75950e02 11 2012 NitraVis 70x IQ TS Contents NitraVis 70x IQ TS Contents OVEIVIEW vo Vu scc ree etre LE EY EE Ep 1 1 1 14 How to use this component operating manual 1 1 1 2 Fields of application 2020005 1 2 1 3 Measuring principle of the UV VIS sensor 1 2 1 4 Structure of the UV VIS sensor 1 3 Safely 22 ues pao khoe Scars iet e A uote esee cce gea cn 2 1 2 1 Safety information 2 5 L0 yekX se aXek EXE 2 1 2 1 1 Safety information in the operating manual 2 1 2 1 2 Safety signs on the product 2 1 2 1 3 Further documents providing safety information 2 1 2 2 Safe operation 0 000 2 2 2 2 1 Authorized use 2 2000005 2 2 2 2 2 Requirements for safe operation 2 2 2 2 3 Unauthorized use suus 2 2 Commissioning eed I RET REY GUERRE TS 3 1 3 1 IQ SENSOR NET system requirements
5. tion 5 2 3 Erroneous user calibration Cause Repeat user calibration Make sure the samples for compari Son are representative Remedy Gas bubbles in front of the measurement windows Check the position within the process and the installation position ba75950e02 11 2012 NitraVis 70x IQ TS What to do if Measured values too low Cause Remedy or too high Gas bubbles in front of the Check the installation position measurement windows of the sensor Measurement windows dirty Clean the measurement win dows Display of ERROR Cause Remedy UV VIS sensor not correctly Check the assignment of the connected terminal connections Load at a power supply mod Install another power supply ule too high module in the vicinity of the sensor IQ SENSOR NET cable to Install another power supply wards the NitraVis 70x IQ TS module in the vicinity of the too long voltage drop too sensor great Electrical connection be Check the cable connection tween power supply module step by step starting with the and NitraVis 70x IQ TS is in power supply module and terrupted replace any defective cable sections Check the contacts on the MIQ modules stack mounting Clean any dirty contacts Care fully bend back contact springs that have been pressed flat or bent pay attention to sufficient spring tension ba75950
6. Caution Wrong measured values possible Check whether the sensor operates correctly or carry out a new successful user zero adjustment ba75950e02 11 2012 NitraVis 70x IQ TS Indexes 9 2 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 sta tus info of sensors consists of 32 bits each of which can have the value 0 or 1 01234567 8 9 1011 12 13 14 15 Status info 10000000 00000000 general denariis T uetue 00000000 00000000 internal 1617181920212223 24 25 26 27 28 29 30 31 The bits 0 15 are reserved for general information The bits 16 21 are reserved for internal service information You obtain the status info via a manual query in the Seffings Servicel List of all components menu see system operating manual by an automated query ofa superordinate process control e g when connected to the Profibus ofthe IQ Data Server see operating manual of the IQ SENSOR NET software pack The evaluation of the status info e g in the case of an automated i query has to be made individually for each bit Status info Status bit Description NitraVis 70x IQ TS Bit O Component hardware defective Bit 1 Component hardware defective xxx Bit 2 Optical measuring range exceeded Bit 3 31 ba75950e02 11 2012 9 5 Indexes NitraVis 70x IQ TS ba75950e0
7. Secondary sensor Check user calibration Fig 4 3 Overview of Sensortest Zero adjustment and user calibration ba75950e02 11 2012 4 9 Measuring Operation NitraVis 70x IQ TS Preparing the sensor Prepare the sensor check or Zero adjustment as follows check or ZO HUS i Switch to the measured value display with M 2 Use A V lt P gt to select the UV VIS sensor 3 Call up calibration with C The Maintenance condition Linked outputs are frozen window appears Maintenance condition Linked outputs are frozen Fig 4 4 Maintenance condition present state The cleaning and the determination of measured values are switched off The measured value display shows a flashing invalid measured value il By activating the maintenance condition linked outputs remain in their 4 Confirm the maintenance condition with OK 5 Take the sensor out of the test sample 6 Remove the blind plug or unscrew the compressed air connec tion from the sensor T Thoroughly clean the sensor enclosure sensor sleeve and the compressed air channels see section 5 1 MAINTENANCE To finish the cleaning procedure thoroughly rinse the entire sensor with ultrapure water 8 Mount the cleaned sensor sleeve Loosen both coupling rings on the sensor sleeve Put the sensor sleeve on the sensor and align it The measuring gap is in the center of the sensor sleeve The
8. commissioning 3 4 Initial commissioning 3 4 1 General information CAUTION Never look into the measuring window or put objects into the measur ing 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 The NitraVis 701 IQ TS sensor is prepared for operation in the aeration tank and calibrated in the factory For use in the inlet you only have to change the Measuring location setting The NitraVis 705 IQ TS sensor is prepared for operation in the outlet of the waste water treatment plant and calibrated in the factory The sensor is immediately ready to measure How to adjust the settings is described in the following section section 3 4 3 On the basis of a reference measurement laboratory value check whether the default settings deliver sufficiently accurate measured values or whether you want to carry out a user calibration see section 4 3 CALIBRATION ba75950e02 11 2012 Commissioning NitraVis 70x IQ TS Main sensor Secondary sensor Sensor overlapping settings and functions 3 4 2 Sensor structure The physical sensor is the sensor with the instrument or model desig nation NitraVis 70x IQ TS The physical sensor processes the mea surement signal absorbance spectrum and supplies up to 5 measurement results to the IQ SENSOR NET The measurement results are administrated like 5 sensors t
9. is still in the mainte nance condition 19 Pour away the ultrapure water or standard solution and remove the sensor sleeve 20 Screw in the blind plug or compressed air connector and install the sensor at the measuring site 21 After the Sensor check standara Thoroughly rinse the sensor and sensor sleeve with ultrapure water 22 Switch off the maintenance condition use lt A V lt P gt to select the UV VIS sensor press lt OK gt and make the setting in the Display Options menu 23 Switch to the measured value display with lt M gt The measured value stops flashing Store the sensor sleeve in a clean environment e g in a plastic bag until the next sensor check or Zero aajustment ba75950e02 11 2012 Measuring Operation NitraVis 70x IQ TS ba75950e02 11 2012 NitraVis 70x IQ TS Maintenance and cleaning 5 Maintenance and cleaning 5 1 Maintenance The UV VIS NitraVis 70x IQ TS sensor operates maintenance free 5 2 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 Primary cleaning Tapwater warm if possible 30 50 C Precision cleaning House hold washing up liquid ultra pure water Lime deposits 5 96 hydrochloric acid Grease deposits Mixture of isopropanol and water approx 70 96
10. isopropanol Forthe final cleaning prior to a Sensor check or Zero adjustment only use cleaning agents with purity grade for analysis Finally thoroughly rinse the sensor with ultrapure water Accessories Sponge e Plastic bristled brushes of different sizes Interdental brushes are suitable for the cleaning of the compressed air channels Flocked cleaning cards see accessories Lens tissues e Wash bottle Note Never use any pressure washer steam blaster abrasives or metal brushes to clean the sensor Risk of damaging the sensor ba75950e02 11 2012 5 1 Maintenance and cleaning NitraVis 70x IQ TS Example 1 Example 2 i 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 biolog ical deposits If the sensor surface might be contaminated with pathogenic germs it should also be disinfected Cleaning the measuring gap Removal of lime deposits Cleaning the measuring gap Removal of grease deposits A heavily contaminated sensor from the inlet of a waste water treat ment plant for which a Sensor check or Zero adjustment should be carried out must run through all cleaning steps properly During the cleaning proc
11. o 1 JOoj O01 o N ba75950e02 11 2012 Overview NitraVis 70x IQ TS 1 4 ba75950e02 11 2012 NitraVis 70x IQ TS Safety 2 Safety 2 1 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 meter so you can always find the infor mation you need Important safety instructions are highlighted in this operating manual They are indicated by the warning symbol triangle in the left column The signal word e g CAUTION indicates the danger level WARNING indicates a possibly dangerous situation that can lead to serious irreversible injury or death if the safety instruction is not followed CAUTION indicates a possibly dangerous situation that can lead to slight reversible injury if the safety instruction is not followed Note indicates a situation where goods might be damaged if the actions mentioned are not taken 2 1 2 Safety signs on the product Note all labels information signs and safety symbols on the product A warning symbol triangle without text refers to safety information in this operating manual 2 1 3 Further documents providing safety information The following documents provide additional i
12. with high measuring accuracy both value pairs should be used for calibration When doing So the calibration value pairs should be determined and input at the limits of the application range as possible You obtain samples of different concentrations e g by taking two samples during clearly different conditions of the plant dry period and rain period The measurement results will be ever more accurate the closer the composition of the test sample corresponds to the status at the time of the calibration If there is a fundamental change of the characteristics of the sample a new calibration may be necessary The calibration data of the user calibration are stored in the IQ Sensor Net controller They are loaded into the sensor during operation and automatically assigned to the replacement sensor if the sensor is exchanged ba75950e02 11 2012 Measuring Operation NitraVis 70x IQ TS Performing a user calibration A Proceed as follows if you want to perform a user calibration In the Settings of sensors and diff sensors menu set the Signal smoothing setting to Off Subsequently leave the menu with Save and quit How to navigate to the Settings of sensors and diff sensors menu and the operation of the menu is described in section 3 4 3 1 Bring the sensor into the measuring position 2 Switch to the measured value display with M 3 Wait for a measurement read the raw value without dimen s
13. 2 11 2012 NitraVis 70x IQ TS Appendix Glossary Resolution Absorbance Absorption Adjusting Calibration Calibration value pair Concentration Measuring system Measured parameter Measured parameter correlated Test sample Measuring gap Measured value 10 Appendix Glossary Smallest difference between two measured values that can be displayed by a meter Attenuation of the light beam when it penetrates the sample 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 Comparing the value from a measuring system e g the displayed value to the correct value or a value that is regarded as correct Often this expression is also used when the measuring system is adjusted at the same time see adjusting Value pair consisting of the raw value measured by the UV VIS sensor and a reference value measured e g by a laboratory deter mination The calibration value pairs are the result of the user calibra tion Mass or amount of a dissolved substance per volume e g in g L or mol L The measuring system comprises all the devices used for measuring e g measuring instrument and sensor In addition there is the cable and possibly an amplifier terminal strip and armature The measured parameter is the physical dimensio
14. Depending on the sample matrix mea sured values can vary more or less strongly e g due to foreign bodies or air bubbles The signal filter here the Response time t90 reduces the limits of variation of the measured values The Response time t90 specifies the time after which 90 of a signal change are displayed This menu item is only available with Signal smoothing On The specified time is used as a guide value for low 10 min to high 60 min signal smoothing and can deviate from the value that was set Cleaning mode e On e Off Switching on off the automatic time controlled cleaning function ba75950e02 11 2012 NitraVis 70x IQ TS Commissioning Menu item Settings Explanations Cleaning type e Ultrasound e Air Cleaning methods This menu item is only available with Cleaning mode On e Ultrasound air The duration of the cleaning procedure is defined in the sensor for all cleaning types Note The duration of the cleaning pro cedure with air can be adjusted for the linked relay in the menu 750 Settings of outputs and links Relay function I Sensorgesteuert Pulsdauer Please note the software requirements for the MIQ CR3 MIQ R6 MIQ CHVP lus DIQ S 182 relays see section 3 1 Save and quit The system confirms the saving of the settings and the display switches to the next higher level Quit The display switches to the next higher level wit
15. ET accessories is given in the WTW catalog and on the Internet How to connect the SACIQ SW sensor connection cable to the termi nal strip of an MIQ module is described in chapter 3 INSTALLATION of the IQ SENSOR NET system operating manual Before connecting the sensor and sensor connection cable please make sure the plug connections are dry If moisture gets into the plug connections first dry the plug connections dab them dry or blow them dry using compressed air Note Do not suspend the sensor on the sensor connection cable but use the suitable mounting equipment Information on this and other IQ SENSOR NET accessories is given in the WTW catalog and on the In ternet ba75950e02 11 2012 Commissioning NitraVis 70x IQ TS Connecting the sensor to the sensor connection cable Take the protective caps off the plug connections of the sensor and the SACIQ SW sensor connection cable and keep them safe 2 Plug the socket of the SACIQ SW sensor connection cable onto the plug head connector of the sensor At the same time rotate the socket so that the pin in the plug head connector 1 clicks into one of the two holes in the socket 3 Then screw the coupling ring 2 of the sensor connection cable onto the sensor up to the stop Fig 3 5 Connecting the sensor 3 6 ba75950e02 11 2012 NitraVis 70x IQ TS Commissioning Measuring location User calibration after initial
16. a zero adjustment If the Zero adjustment is not successful the sensor is blocked for mea surement A successful Zero adjustment is required for the determina tion of measured values Use the Sensor check standard to check the sensor with a standard solution see chapter 6 SPARE PARTS MAINTENANCE EQUIPMENT ACCES SORIES During the check the recorded spectrum is compared to a reference spectrum of the standard solution stored in the sensor ba75950e02 11 2012 NitraVis 70x IQ TS Measuring Operation Calibration points and value pairs Selection of calibration points i Storage location of user calibration data 4 3 2 User calibration The adjustment is carried out at one or two points within the measuring range A value pair is determined at each point Each value pair consists of the raw value of the UV VIS sensor and the corresponding reference value Each value pair has to be determined at the same time and place as the test sample as possible At the time of the calibration the test sample should be in a condition that is typical of the application If the required accuracy is low the default setting of the first value pair can be adopted unchanged The first value pair is equivalent to the zero point in this case The second value pair should be close to the working point of the application This method results in a single point calibra tion If the application has to cover a wide value range
17. ary leave the cleaning card in the measuring gap for a few minutes so the detergent can take effect M d Thoroughly rinse with ultrapure water the measuring gap and the surrounding areas moistened with detergent Then wipe the measurement window with a lens tissue The surface of the measurement windows must be free of streaks Protect the cleaned sensor against new contamination ba75950e02 11 2012 NitraVis 70x IQ TS Spare parts maintenance equipment accessories General accessories replacement parts Test equipment Components for the optional compressed air cleaning system 6 Spare parts maintenance equipment accessories Description Model Order no Calibration sleeve VIS CV 481 074 20 flocked cleaning cards for VIS CT 481 071 cleaning the measuring gap Cleaning set VIS C SET 481 079 20 flocked cleaning cards Cleaning solutions Description Model Order no Standard 1 ST 1 481 077 with low concentration for 5 mm UVVIS sensors Standard 2 ST 2 481 078 with high concentration for 1 mm UVVIS sensors Description Model Order no Compressed air cleaning set with SET AP 481 075 15 m compressed air hose to be connected to a valve module or Cleaning Air Box Active valve module does not MIQ CHV PLUS 480 018 require a free relay output in the IQ SENSOR NET system Valve module for the DIQ CHV 472 007 IQ SENSOR NET system 182 external relay and compres
18. ccurs is characteristic of the substance The extent of the absorbance depends on the amount of the substance The influence of typical interference matrix variants occurring at munic ipal waste water treatment plants can be eliminated by including the entire absorbance spectrum With this measuring principle measuring does not take place continu ously but at intervals ba75950e02 11 2012 NitraVis 70x IQ TS Overview 1 4 Structure of the UV VIS sensor A UV VIS sensor contains 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 The sender of the optical system 2 directs a light beam the measuring beam 6 through the measuring solution and a second light beam the reference beam 8 over a distance without measuring solution The test sample is between both measurement windows 3 in the measuring gap The receiver of the optical system 4 directs the measuring beam and reference beam to the detector In the detector the light is received by fixed photo diodes 6 1 2S 45 Im mt s DN Fig 1 2 Structure of a UV VIS sensor Light source Sender of the optical system Measuring gap between the measurement windows Receiver of the optical system Detector Measuring beam Reference beam Connection for the optional compressed air cleaning system
19. clusively use distilled or deionized water that is suitable for analysis purposes Especially make sure that the concen tration of metrologically relevant substances nitrate is negligible The data of the sensor checks are not stored The data of the user zero adjustment are stored in the sensor A successful Sensor check H2O dest is the prerequisite for a valid user calibration After each Sensor check H2O dest the sensor is evaluated A changed sensor evaluation proves that the cleaning was effective The steps of the sensor check or Zero adjustment are identical except for the used check solutions ultrapure water or standard solution and are described together below The sensor check and Zero adjustment are carried out with the aid of the sensor sleeve ba75950e02 11 2012 NitraVis 70x IQ TS Measuring Operation Flowchart Cleaning the sensor e Clean the measurement windows Rinse the measuring chamber with ultrapure water several times Carry out a sensor check H20 l l After cleaning several times l without significant change of l the sensor assesssment l Carry out zero adjustment Zero adjustment bng Operating error or defective sensor Error oK Sensor blocked for measurement After several zero adjustments Reset to l l l e Factory zero adjustment or last valid user zero adjustment After several sensor checks Operating error or defective sensor
20. e02 11 2012 7 3 What to do if NitraVis 70x IQ TS 7 4 ba75950e02 11 2012 NitraVis 70x IQ TS Technical data Measuring principle Wavelength range Measuring gap optical layer thickness Nitrate measurement 1 mm gap width Nitrate measurement 5 mm gap width TSS measurement 1 mm gap width TSS measurement 5 mm gap width i 8 Technical data 8 1 Measurement characteristics Spectrophotometric absorption measurement integrated micropro cessor electronics shielded 2 wire connection for power and data transmission 200 720 nm NitraVis 701 IQ TS 1 mm NitraVis 705 IQ TS 5 mm Measuring Measuring Measuring range Resolution location mode Inlet NO3 0 0 300 0 mg L 0 1 mg L NO3 N 0 00 60 00 mg L 0 01 mg L Activation NO3 0 0 300 0 mg L 0 1 mg L NO3 N 0 00 60 00 mg L 0 01 mg L Outlet NO3 0 0 750 0 mg L 0 1 mg L NO3 N 0 0 150 0 mg l 0 1 mg L Measuring Measuring Measuring range Resolution location mode Outlet NO3 0 0 250 0 mg L 0 1 mg L NO3 N 0 00 50 00 mg L 0 01 mg L Measuring Measuring Measuring range Resolution location mode Inlet TSS 0 00 15 00 g L 0 01 g L Activation TSS 0 00 20 00 g L 0 01 g L Measuring Measuring Measuring range Resolution location mode Outlet TSS 00 9000mgl 0 1 mg L The quoted measuring ranges are nominal measuring ranges that are theoretica
21. eration NitraVis 70x IQ TS i Result after Sensor check H20 dest Result after Zero adjustment 15 Confirm each checklist with OK until the Start measurement display appears Up to this point you can break off the calibration procedure at any time with the lt ESC gt key The system continues to work with the old calibra tion data The maintenance condition however has to be switched off again in any case After starting the calibration with the OK key step 16 you can no longer cancel the calibration procedure 16 Confirm with OK The measurement is started After the end of the measurement the result appears With the Zero adjustment the result is entered in the calibration history at the same time Rating number Meaning Zero range Sensor check H20 dest successful OK 40 40 0 no deviation Positive number Measured values were too low 40 1000 Possible cause The measurement windows are contaminated Negative number Measured values were too high 40 1000 Possible cause During the last zero adjustment the measure ment windows were contaminated more than dur ing the current sensor check If the rating number is not in the zero range Repeat the cleaning procedure and the Sensor check H20 dest until the rating number no longer changes significantly If the rating number is still outside the zero range a new zero adjust ment is
22. ero point influences the calculation of the raw value Composition of the test sample of different individual substances Random sample of the test sample for comparative chemical analyt ical laboratory analyses intended for user calibration Ultrapure water is distilled or deionized water suitable for analysis purposes The raw value is determined from the spectrum while taking into account the data from the zero adjustment The raw value is displayed on the right side of the measured value in the measured value display Spectral absorption coefficient at a certain wavelength The SAC 254 value is a measure of the contents of organic compounds Distribution of the absorbance depending of the wavelength With the aid of the zero adjustment and user calibration the measured values are calculated from the spectrum 10 2 ba75950e02 11 2012 NitraVis 70x IQ TS Contact Information 11 Contact Information 11 1 Ordering amp Technical Support Telephone 800 897 4151 937 767 7241 Monday through Friday 8 00 AM to 5 00 PM ET Fax 937 767 1058 Email environmental Q ysi com Mail YSI Incorporated 1725 Brannum Lane Yellow Springs OH 45387 USA Internet www ysi com When placing an order please have the following information available YSI account number if available Name and Phone Number Model number or brief description Billing and shipping address Quantity Purchase Order or Credit Card 11 2 Serv
23. ess always keep all surfaces moist to prevent already dissolved contamination and detergents from drying working wet on wet Finally thoroughly rinse off all remaining cleaning agents with ultrapure water If the sensor from example 1 should be cleaned on site during a routine visual inspection and should then continue measuring a basic cleaning might possibly be sufficient The quoted examples and the following descriptions are intended to give a general guideline Due to the sensor s wide range of application the type and level of contamination can considerably vary Therefore the cleaning procedure has to be individually composed If necessary individual cleaning steps have to be changed or repeated several times until the result meets the requirements ba75950e02 11 2012 NitraVis 70x IQ TS Maintenance and cleaning Steps of the basic cleaning 5 2 3 Basic cleaning Take the sensor out of the test sample and remove any solid matter 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 If the sensor might be contaminated with pathogenic germs it should be disinfected with a surface disinfectant This also applies to the cable and mounting parts Note Follow the instruction manual of the disinfectant reac tion time Remove the blind plug or unscrew the compressed ai
24. filling opening of the sensor sleeve and the measur ing gap opening of the sensor are offset by 90 Tighten both coupling rings on the sensor sleeve by hand 4 10 ba75950e02 11 2012 NitraVis 70x IQ TS Measuring Operation Measuring chamber Sensor sleeve Fig 4 5 Putting the sensor sleeve on the sensor 9 Put the sensor in a horizontal position on a firm and vibration free surface Turn the filling opening of the sensor sleeve upward Fig 4 5 10 Rinse the measuring chamber with ultrapure water at least 3 times 11 For Sensor check H20 dest or Zero adjustment Fill the measuring chamber with ultrapure water or For Sensor check standard Fill the measuring chamber with standard solution see sec tion 6 12 Ifthere are any air bubbles on the measuring windows remove them by gently knocking on the sensor sleeve with a bar filling the sensor sleeve If you wait longer the result of the Sensor Carry out the intended sensor check or Zero adjustment directly after li check Zero adjustment will be affected canying edt m 13 Select the required option with A V lt gt and lt OK gt Zero adjustment e Sensor check H20 dest e Zero adjustment Sensor check standard 14 Confirm with OK A multipart checklist appears Use it to check once more whether all preparations have been completed ba75950e02 11 2012 4 11 Measuring Op
25. hat differ in hierarchy as follows The sensor for nitrate measurement is the main sensor It registers on the system under the designation NitraVis 70x IQ TS and the series number of the physical sensor The sensor for the measurement of total suspended solids is the secondary sensor It registers on the system under the designation SolidVis 70x IQ and the series number of the physical sensor Some settings and functions are sensor overlapping Sensor overlap ping settings are generally edited in the setting menu of the main sen sor These are the most important sensor overlapping settings and func tions e Measuring location Times of the measuring cycle Meas interval Cleaning duration Adjustment phase etc e Signal smoothing Details on sensor overlapping functions are given in the following section ba75950e02 11 2012 NitraVis 70x IQ TS Commissioning 3 4 3 Settings for the main sensor A measuring cycle consists of the cleaning procedure the adjustment time for the measuring system and the determination of the measured value The following graphic demonstrates the relevant settings Measuring cycle Measuring cycle o E par c o E 7 E o lt Measurement Cleaning Measuring interval Fig 3 6 Measuring cycle of the UV VIS sensor Using lt S gt switch from the measured value display to the main menu of the settings Then navigate to the setting menu setting table of t
26. he sensor The procedure is described in detail in your IQ SENSOR NET system operating manual Carrying out settings Default values are marked in bold Menu item Settings Explanations Measuring mode e NO3 N The measured parameter is displayed e NO3 in the selected citation form Measuring location NitraVis 701 IQ TS Measurement location or application of e Activation the sensor js e The possible measurement loca tions are displayed depending on the e Outlet currently set measuring mode NitraVis 705 IQ TS The sample matrix on which the cal e Outlet culation of the measured value is permanently set based changes with the location of the sensor Measuring range Display of the measuring range see chapter 8 TECHNICAL DATA 11 2012 Commissioning NitraVis 70x IQ TS Menu item Settings Explanations Cal raw value 7 Cal ref value 1 Cal raw value 2 Cal ref value 2 Value pairs of the user calibration see section 4 3 2 Note Leave those values unchanged during the initial commission ing Zero adjustment Factory User Setting of which zero adjustment is used in the sensor Factory zero adjustment or Zero adjustment carried out last Signal smoothing e On e Off Switching on off the signal smoothing For more details see Response time t90 Response time t90 10 60 min Response time of the signal smoothing
27. hout saving the new settings 3 4 4 Settings of the secondary sensor TSS measurement Carrying out settings Using lt S gt switch from the measured value display to the main menu of the settings Then navigate to the setting menu setting table of the sensor The procedure is described in detail in your IQ SENSOR NET system operating manual Default values are marked in bold Menu item Settings Explanations Measuring mode TSS Display of the measuring mode TSS total suspended solids measure ment Measuring range Display of the measuring range see chapter 8 TECHNICAL DATA Cal raw value 1 Value pairs of the user calibration for TSS measurement see section 4 3 2 Cal ref value 7 Note Leave those values unchanged during the initial commission ing Cal raw value 2 Cal ref value 2 ba759506002 11 2012 3 11 Commissioning NitraVis 70x IQ TS Menu item Settings Explanations Main sensor Information that there are further sensor overlapping settings in the setting menu of the relevant main sensor Meas interval Cleaning duration Signal smoothing etc Save and quit The system confirms the saving of the set tings and the display switches to the next higher level Quit The display switches to the next higher level without saving the new settings Terminal PC 26 Oct S02 SolidUis O0 11 03090001 2011 11 10 g
28. ice Information YSI has authorized service centers throughout the United States and Internationally For the nearest service center information please visit www ysi com and click Support or contact YSI Technical Support directly at 800 897 4151 When returning a product for service include the Product Return form with cleaning certification The form must be completely filled out for an YSI Service Center to accept the instrument for service The Product Return form may be downloaded at www ysi com and clicking on the Support tab ba75950e02 11 2012 11 1 Contact Information NitraVis 70x IQ TS 11 2 ba75950e02 11 2012
29. ion and note it down In the case of fluctuating values Observe several measuring cycles and average the individual raw values 4 Take a sample at the same time as the measurement and as close to the UV VIS sensor as possible 5 Determine the reference value and note it down as a value pair together with the raw value 6 For a two point calibration Determine the second value pair step 4 to step 6 At least one value pair and a maximum of two value pairs can be entered for a valid calibration The values must be in ascending order If they are not in ascending order a calibration error will occur fe Sort the values pairs in ascending order 8 In the Settings of sensors and diff sensors menu enter the value pair or pairs see the following table The entry of calibration values outside the measuring range leads to a calibration error ba75950e02 11 2012 NitraVis 70x IQ TS Measuring Operation i Default values are marked in bold Menu item Settings Explanations Cal raw value 1 0 00 5000 00 Raw value of the first value pair lower concentration For single point calibration enter O Cal ref value 1 0 00 5000 00 Reference value of the first value pair lower concentration For single point calibration enter O Cal raw value 2 0 00 10 00 5000 00 Raw value of the second value pair higher concentration or raw value of the single poi
30. l the components used Please file this component operating manual into the ring binder of the System operating manual ba75950e02 11 2012 Overview NitraVis 70x IQ TS Measuring location Ultrasound cleaning system Compressed air cleaning option 1 2 Fields of application The range of application comprises control feedback control and mon itoring NitraVis 7011Q TS Aeration tank or inlet NitraVis 705 IQ TS Outlet The ultrasound cleaning system ensures low maintenance and long term reliable measurement operation The ultrasound source integrated in the sensor excites the measure ment windows to produce vibrations in the ultrasound range The movement of the surface as a result of this prevents the growth of pollution in almost all cases and thus ensures reliable measured values during continuous operation The sensor is designed to be equipped with an additional compressed air driven cleaning system which supports the ultrasound cleaning system as necessary 1 3 Measuring principle of the UV VIS sensor The UV VIS sensor operates according to the measuring principle of UV VIS spectrometry Any substance contained in a measuring solution attenuates a light beam that penetrates the measuring solution The attenuation absor bance of the light beam is measured for different wavelengths The wavelength dependent distribution produces the absorbance spec trum The wavelength range where an absorbance o
31. lly possible In practice real measuring ranges exist that are given by the limits of photometric determination The limits are signifi ba75950e02 11 2012 8 1 Technical data NitraVis 70x IQ TS Suitability and areas of application Measuring medium Pressure resistance Type of protection Immersion depth Operating position cantly influenced by the light scattering due to solids and the absorption of accompanying substances sample matrix Therefore no fixed measuring range can be determined beforehand 8 2 Application conditions Municipal wastewater with a low proportion of industrial wastewater pH value 4 12 Flow rate 3 m s Temperature 0 C 45 C 32 F 113 F Sensor with connected SACIQ SW sensor connection cable Max allowed overpressure 105 Pa 1 bar The sensor meets all requirements according to article 3 3 of 97 23 EC pressure equipment directive Sensor with connected SACIQ SW sensor connection cable IP X8 1 bar 10 Pa min The measuring gap must be filled with test sample max 10 m depth Any ba75950e02 11 2012 NitraVis 70x IQ TS Technical data Dimensions in mm Weight Connection technique Materials Storage temperature 8 3 General data 865 774 381 2 Wil o 60 Socket SACIQ With shock protection 96 Approx 3 8 kg without shock
32. n and cable lengths Follow installation instructions Power supply module s overloaded add power supply module s Check terminal and module connections Defective components replace components Humidity to high in sensor Contact service Failure optical measurement dev ation to calibration for reference channel too high Contact service Failure optical measurement hardware lamp Contact service ba75950e02 11 2012 NitraVis 70x IQ TS Indexes Message code ES5541 ES6541 ES7541 Message text Failure optical measurement hardware Contact service Failure optical measurement software Contact service Failure optical measurement software BIOS Contact service ba75950e02 11 2012 Indexes NitraVis 70x IQ TS Message code IAC541 IC3541 IC4541 IC5541 IC6541 9 1 2 Info messages Message text Zero adjustment was successfully carried out Carry out sensor check If required carry out new user calibration The factory zero adjustment was activated Make sure the sensor op erates correctly The last valid user zero adjustment was activated Make sure the sen sor operates correctly Invalid user zero adjustment was replaced by last valid user calibration Caution Wrong measured values possible Carry out a new successful zero adjustment to make sure the sensor operates correctly The invalid user zero adjustment was replaced by the factory zero adjustment
33. n determined by measuring e g pH conductivity or D O concentration With the measuring method used a correlated measured parameter is not determined directly A correlated measured parameter can however be derived from a determinable measured parameter The precondition for this is that there is a reproducible interrelationship correlation between the determinable and correlated measured parameter Designation of the test sample ready to be measured The measuring gap is between the two measurement windows In the measuring gap the light beam penetrates the test sample The measured value is the special value of a measured parameter to be determined It is given as a combination of the numerical value and unit e g 3m 0 5 s 5 2 A 373 15 K The measured value is determined from the raw value taking into account the data from a user calibration The measured value is displayed together with the raw value in the measured value display ba75950e02 11 2012 10 1 Appendix Glossary NitraVis 70x IQ TS NO2 N NO3 N Zero adjustment Sample matrix Reference sample Ultrapure water H2O dist Raw value SAK SAC Spectrum The proportion of nitrogen coming from nitrite The proportion of nitrogen coming from nitrate Measuring and saving the absorbance spectrum of ultrapure water Defines the zero points in the spectrum for all wavelengths The light beam is not alleviated at the zero point The z
34. necessary Result Meaning Sensor released for measurement OK Zero adjustment successful Yes Error Zero adjustment not success No ful If the result is erroneous clean the sensor and all equipment once again Then carry out a new Zero adjustmentand when doing so make sure the conditions are absolutely clean ba75950e02 11 2012 NitraVis 70x IQ TS Measuring Operation i Result after Sensor check standard Completing the sensor check or Zero adjustment i 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 To do so select the Zero adjustment setting in the sensor settings Factory factory zero adjustment or User last valid user zero adjust ment Then check the measurement results with a Sensor check standard Suitable standards check equipment for your sensor are available as accessories see chapter 6 Result Meaning OK Sensor check standard successful Error Sensor check standard not successful Possible cause wrong or expired standard After a successful sensor check or Zero adjustment return to measure ment as follows 17 Confirm the calibration result with lt OK gt 18 Confirm the message After successful ca with OK The display returns to the measured value display The mea sured value flashes because the sensor
35. nformation which you should observe for your safety when working with the measuring system Operating manuals of other components of the IQ SENSOR NET system power packs controller accessories e Safety datasheets of calibration and maintenance equipment e g cleaning solutions ba75950y01 11 2012 2 1 Safety NitraVis 70x IQ TS 2 2 Safe operation 2 2 1 Authorized use The authorized use of the NitraVis 70x IQ TS consists of its use as a sensor in the IQ SENSOR NET Only the operation and running of the product according to the instructions and technical specifications given in this operating manual is authorized see chapter 8 TECHNICAL DATA Any other use is considered unau thorized 2 2 2 Requirements for safe operation Note the following points for safe operation The product may only be operated according to the authorized use specified above The product may only be supplied with power by the energy sources men tioned in this operating manual The product may only be operated under the environmental conditions men tioned in this operating manual The product may not be opened 2 2 8 Unauthorized use The product must not be put into operation if it is visibly damaged e g after being transported it was stored under adverse conditions for a lengthy period of time storing conditions see chapter 8 TECHNICAL DATA ba75950y01 11 2012 NitraVis 70x IQ TS Commi
36. nical data ost b ieee ot eae ants 8 1 8 1 Measurement characteristics 4 8 1 8 2 Application conditions 00000 aes 8 2 83 Generaldata 0 00 ees 8 3 8 4 Electrical data illii 8 4 9 IdBXeS auccosreieiuu eeu Xu M HE WERE EL 9 1 9 1 Explanation of the messages 05 9 1 9 1 1 Error messages elles 9 2 9 1 2 Infomessages leeess elles 9 4 9 2 Status info a a ees 9 5 10 Appendix Glossary 0000 c eee eee eee 10 1 11 Contact Information 11 1 11 1 Ordering amp Technical Support 11 1 11 2 Service Information 00 cece ee eee 11 1 ba75950y01 11 2012 NitraVis 70x IQ TS Overview Overview How to use this component operating manual 1 1 1 Structure of the IQ SENSOR NET operating manual IQ Sensor Net Operating Manual System Operating Manual Ring Binder IQ Sensor Operating Manual MIQ Module Operating Manual MIQ Terminal Operating Manual Component Operating Manuals Fig 1 1 Structure of the IQ SENSOR NET operating manual The IQ SENSOR NET operating manual has a modular structure like the IQ SENSOR NEr itself It consists of a system operating manual and the operating manuals of al
37. nt calibration Cal ref value 2 Calibration evaluation 0 00 10 00 5000 00 Reference value of the second value pair higher concentration or reference value of the single point calibration The entered calibration data are checked for plausibility by the system The check can have the following results Display Meaning actions Measured value dis play Successful new valid calibration value pairs were entered for the sensor Information on the conten Calibration value pairs not accepted Sen sor is blocked for measurement A log book message is generated Causes Ascending order not observed Atleast one value is outside the measur ing range ts and structure of the log book and how you can call it up is given in the LOG Book chapter of the IQ SENSOR NET system operating manual The user calibration is not recorded in the calibration history You can however view the current value pairs in the Settings of sensors and diff sensors menu at any time ba75950e02 11 2012 Measuring Operation NitraVis 70x IQ TS Ultrapure water H20 dist Storage location of the Zero adjustment data Steps 4 3 3 Sensor check Zero adjustment Note The sensor check or Zero adjustment must be carried out under abso lutely clean conditions If you do not work carefully enough the Zero ad justment can deteriorate the measuring quality As ultrapure water ex
38. nt code It identifies the component active component that caused the message Some error messages contain an internal error code starting with Module code Component 3A1 NitraVis 701 IQ 3A2 NitraVis 705 IQ 3A7 SolidVis 701 IQ 3A8 SolidVis 705 IQ 541 BasicVis IQ ba75950e02 11 2012 Indexes NitraVis 70x IQ TS Message code EA2541 EA3541 EAI541 EAM3Ax EC33Ax EI1541 EI2541 ES2541 ES3541 ES4541 9 1 1 Error messages Message text Sensor temperature too high Check process and application Sensor temperature too low Check process and application Zero adjustment erroneous Clean the sensor and sensor sleeve repeatedly Position the sensor sleeve according to operating manual Rinse the measuring chamber with ultrapure water several times Fill the measuring chamber with ultrapure water Repeat the zero adjustment Meas range exceeded or undercut Check process User calibration erroneous Check raw value reference value pairs Set all values within the measuring range see operating manual Enter value pairs in ascending order Operational voltage too low Check installation and cable lengths Follow installation instructions Power supply module s overloaded add power supply module s Check terminal and module connections Defective components replace components Operational voltage too low no operation possible Check installatio
39. o the calculation of the measured value at different points see section 4 1 User calibration see section 4 3 2 Sensor check Zero adjustment see section 4 3 3 An overview diagram of the calibration procedures can be found on page 4 9 User calibration With a user calibration you compensate for the influence of the test sample The user calibration requires a successful Sensor check H2O dest and a valid Zero adjustment We recommend to check the current user calibration against indepen dent comparison measurements if you suspect a basic change of the characteristics of the test sample If the comparison measurements show clear deviations these can be compensated by a user calibration Recalibration after changing the measuring location and the setting Measuring location was changed we recommend to carry out a Sensor check H20 dest and if the Sensor check H20 dest was not successful an additional Zero adjustmentif necessary with a subse quent user calibration il Each time after the application or measurement location troller and thus assigned to the measuring location not to the sensor The data of the user calibration are stored in the IQ SENSOR NET con i The calibration data of the Zero adjustment are stored in the sensor ba75950e02 11 2012 4 3 Measuring Operation NitraVis 70x IQ TS Sensor check H20 dest lil Zero adjustment lil Sensor check standa
40. or another obstacle Make sure the safety margins are sufficient e g with suspended mounting Mount the enclosed shock protectors see section 3 3 2 Their soft rub ber compound absorbs hard impacts Fig 3 3 Sensor with mounted shock protectors ba75950e02 11 2012 3 3 Commissioning NitraVis 70x IQ TS 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 1 Plug the cap pos 2 in Fig 3 4 on one of the two rings pos 1 2 Put the assembled unit on the sensor end and fix it with 2 cable ties pos 3 as shown in Fig 3 4 3 Put the second ring on the cable end of the sensor and fix it with the remaining two cable ties in the same way ba75950e02 11 2012 NitraVis 70x IQ TS Commissioning Connection cable Are the plug connections dry 3 3 3 Connecting the sensor to the IQ SENSOR NET 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 TS Information on this and other IQ SENSOR N
41. protectors and without sensor connec tion cable Approx 4 8 kg with shock protectors but without sensor connection cable Connection via SACIQ SW sensor connection cable Sensor shaft Titan Grade 2 Center piece PEEK End cap PEEK Measurement window Sapphire Plug head connector housing POM Plug 3 pole ETFE blue Tefzel Protection ring POM 10 C 50 C 14 122 F ba75950e02 11 2012 Technical data NitraVis 70x IQ TS Instrument safety Applicable norms EN 61010 1 UL 61010 1 CAN CSA C22 2 61010 1 IEC 62471 Test certificates cETLus CE m Conforms to ANSI UL 61010 1 Certified to CAN CSA C22 2 61010 1 C LISTED Intertek 2001759 8 4 Electrical data Nominal voltage Max 24VDC via the IQ SENSOR NET for more details see chapter TECHNICAL DATA of the IQ SENSOR NET sys tem operating manual Power consumption 8W Protective class Il 8 4 ba75950e02 11 2012 NitraVis 70x IQ TS Indexes 9 Indexes 9 1 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 SENSOR NET system for the NitraVis 70x IQ TS Information on the contents and structure of the log book and the struc ture of the message code is given in the LOG BOOK chapter of the IQ SENSOR NET system operating manual The last three digits of the message code form the compone
42. r connec tion from the sensor Clean the sensor with soapy water When doing so clean the area of the measuring gap and the compressed air channels very thoroughly The compressed air channels can be cleaned with the aid of interdental brushes and rinsed with soapy water from a wash bottle Soak the flocked cleaning cards with soapy water and use them to clean the measuring gap as shown in the following fig ure Cut suitable strips off the cleaning card to clean the bottom of the measuring gap Then rinse the sensor with running warm tapwater and finally with a lot of ultrapure water Finally wipe the measurement window with a lens tissue After completing the cleaning procedure screw in the blind plug or compressed air connection ba75950e02 11 2012 Maintenance and cleaning NitraVis 70x IQ TS 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 96 for analysis Grease deposits Mixture of isopropanol and water approx 70 isopropanol made of 7 volume parts isopropanol for analysis and 3 volume parts ultrapure water Proceeding e Start by removing any lime deposits Soak a flocked cleaning card with the relevant detergent and use it to clean the measuring windows according to step 6 in section 5 2 3 BASIC CLEANING If necess
43. rd The characteristics of a sensor and thus the measured values provided by it change in the course of time The reasons for this can be the aging of the sensor or contamination or mechanical damage of the sensor Contamination or mechanical damage in the area of the measuring chamber or on the measurement windows affect the measured values In UV VISspectroscopy very small contamination that is not visible to the eye can considerably affect the measured value The proper and thorough cleaning of the sensor is the basis for reliable measurement data A Sensor check H20 dest determines the condition of the UV VIS sensor By checking the sensor with the aid of the Sensor check H2O dest you can rapidly see any changes of the sensor and whether it needs to be cleaned or if any other actions have to be taken A Sensor check H2O dest should be carried out twice per year at regular intervals An extraordinary Sensor check H20 dest should be carried out if you suspect that the sensor has been damaged such as by mechanical shock or if the measured values do not seem plausible While the Sensor check H20 dest just determines the current state of the sensor a Zero adjustment can be used to compensate for changes of the sensor A zero adjustment can be required if for example the Sensor check H2O dest is not successful even after the sensor was thoroughly cleaned The sensor should always be very thoroughly cleaned prior to
44. rry out new user calibration Measurement windows dirty Clean the measurement win dows Sensor setting wrong Check and if necessary cor rect the Measuring mode Mea suring location sensor settings Carry out new user calibration Optical system maladjusted e g due to inadmissible mechanical shock Carry out Sensor check H20 dest or Zero adjustment or Sensor check standard ba75950e02 11 2012 What to do if NitraVis 70x IQ TS Drifting measured values Display of OFL Measured values fluctuating heavily Cause Remedy Cleaning efficiency too low measurement windows becoming more and more contaminated Clean the measurement win dows section 5 2 4 Use other cleaning method Select different measurement location Setlonger cleaning duration Set more frequent cleaning procedures Install optional compressed air cleaning device Failure of the optional com pressed air cleaning system Clean the measurement win dows section 5 2 4 Check all components of the compressed air cleaning sys tem compressor compressed air line UV VIS sensor rinsing openings Substantial change of test sample sample matrix Cause Carry out new user calibration Remedy Measuring range exceeded Check process Foreign matter in the measur ing gap Clean the measuring gap sec
45. s make sure the surface of the enclosure is not damaged by sharp edged objects The enclosure of the sensor may not touch any metallic objects in order to prevent contact corrosion Note Do not suspend the sensor on the sensor connection cable Risk of ca ble break and water penetration at the cable gland A wide range of mounting accessories is available for the installation of the NitraVis 70x IQ TS see chapter 6 SPARE PARTS MAINTENANCE EQUIPMENT ACCESSORIES Thus all prevalent ways of mounting are possible Generally observe the following general rules when mounting the sensor at the measuring location When mounting the sensor horizontally the measuring gap opening should be on the side Thus any air bubbles can escape upward after cleaning and no sediment can collect in the measuring gap The sensor should be aligned in parallel with the flow direction Measuring gap opening Fig 3 1 Horizontal installation ba75950e02 11 2012 NitraVis 70x IQ TS Commissioning Vertical installation For vertical installation mount the sensor in a position that allows inter fering elements 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 AR asuring gap opening Fig 3 2 Vertical installation Protection against shocks When installing the sensor always make sure it cannot knock against a wall
46. sed air supply Air compressor to be triggered by Cleaning Air Box 480 017 relay power supply 115 V AC 115 VAC Air compressor to be triggered by Cleaning Air Box 480 019 relay power supply 230 V AC 230 VAC ba75950e02 11 2012 Spare parts maintenance equipment accessories NitraVis 70x IQ TS Mounting accessories Description Model Order no Mounting set for horizontal instal VIS Set EH 481 073 lation with EH F 170 swing mount ing assembly Flow through armature VIS FT 1 480 080 Information on other IQ SENSOR NET accessories is given in the WTW catalog and on the Internet ba75950e02 11 2012 NitraVis 70x IQ TS What to do if 7 What to do if display Cause Remedy invalid measured value User calibration values Correct the entry and enter entered incorrectly once again section 4 3 2 Repeat Sensor check H2O dest or Sensor check H20 dest or Zero adjustment or Zero adjustment or Sensor check standard Sensor check standard defective Check conditions especially cleanliness section 4 3 3 Zero adjustment still errone Contact WTW ous after several trials Unknown Seelog book Implausible measured Cause Remedy values Erroneous user calibration Repeat user calibration Make sure the samples for compari Son are representative Substantial change of test sample sample matrix Ca
47. ssioning Software statuses of the controller and terminal components For cleaning with compressed air via a relay 3 Commissioning 3 1 IQ SENSOR NET system requirements The operation of the NitraVis 70x IQ TS requires the following software versions in the IQ SENSOR NET e DIQ S 182 Controller software Version 3 45 or higher MIQ MC2 Controller software Version 3 37 or higher MIQ TC 2020 XT Controller software Version 3 37 or higher IQ Software pack Software version Version 1 00 or higher CONNECT MIQ CR3 Software version Version 2 88 or higher MIQ R6 Software version Version 2 88 or higher MIQ CHV PLUS Software version Version 2 88 or higher DIQ S 182 XT Software version Version 3 44 or higher 3 2 Scope of delivery of the NitraVis 70x IQ TS The following parts are included in the scope of delivery of the NitraVis 70x IQ TS UV VIS sensor Sensor sleeve Shock protectors Operating manual ba75950e02 11 2012 Commissioning NitraVis 70x IQ TS Horizontal installation 3 3 Installation 3 3 14 Mounting the sensor Note The sensor is an optical precision instrument that is to be protected against shocks Make sure the distances to the wall bottom and other installation surroundings are sufficient If necessary protect the sensor from hitting with the protective ring provided Mount any fixing elements only on the stable metal shaft Note Alway
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