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TECHNICAL DATA

7

45

OPTISENS TUR 2000

www.krohne.com

07/2017 - 4001970202 - MA OPTISENS TUR 2000 R01 en

7.1 Measuring principle

Turbidity is an optical property of water based on the amount of light scattered and absorped by
collodial and suspended particles. The turbidity value measured in FNU, FTU, NTU etc. is the
quantitative statement of this qualitative phenomenon.
The goal of measuring turbidity is to get an indication for the concentration of scattering
particles in a medium. This can be done by determination of the light loss of the transmitted
beam or the measurement of the light scattered sideways. Both methods deliver proportional
data to particle concentration and are therefore suitable for measuring turbidity. They however
differ in application and concentration levels. Scattered light measurement principle is more
suitable for the detection of lower concentrations, while transmission (reflection or absorption)
measurement is used for higher concentrations.

The device measures scatted light at 90

°

which is according to ISO 7027 / DIN EN 27027 to be

used for turbidity values below 40 NTU.The NIR light source and receiver are positioned in a 90

°

angle to each other. The light transmitted from the source is directed in equal strength to the
reference detector and into the medium. Light is scattered from the particles and the portion
which is scattered at a 90

°

angle is received by the detector. The meter now compares the light

from the reference detector and scattered light receiver and calculates the turbidity value.

The measurement unit for the turbidity measured at a 90

°

angle varies depending on country in

and is according to ISO 7027 Formazine Nephelometric Unit (FNU), but the more commonly used
terminology is Nephelometric Turbidity Unit (NTU) stated within the US EPA 180.1. Both units
compare 1 to 1.

The advantage of the using NIR as light source as stated in the ISO 7027 is that this sensor is not
affected by colour of the medium measured.

Figure 7-1: Measuring principle for turbidity measurement

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Summary of Contents for OPTISENS TUR 2000

Page 1: ...UR 2000 OPTISENS TUR 2000 OPTISENS TUR 2000 OPTISENS TUR 2000 Handbook Handbook Handbook Handbook KROHNE 07 2017 4001970202 MA OPTISENS TUR 2000 R01 en The documentation is only complete when used in combination with the relevant documentation for the signal converter ...

Page 2: ...ny part thereof without the prior written authorisation of KROHNE Messtechnik GmbH Subject to change without notice 2 O www krohne com 07 2017 4001970202 MA OPTISENS TUR 2000 R01 en Copyright 2017 by KROHNE Messtechnik GmbH Ludwig Krohne Str 5 47058 Duisburg Germany IMPRINT ...

Page 3: ...d transport 12 3 4 Configuration of a measuring point 12 3 5 Pre installation requirements 13 3 6 Opening the converter housing 14 3 7 Installation procedure 14 3 8 Sensor use without cleaning function 14 3 9 Sensor use with cleaning function 15 3 10 Mounting the sensor into an assembly 16 4 Electrical connections 17 4 1 Safety instructions 17 4 2 Connecting the power supply to the signal converte...

Page 4: ...eck signal reset 38 5 3 13 Check enable 38 5 3 14 Check fouling 38 5 3 15 Check dry 39 5 3 16 Last calibration date 39 5 3 17 ID value 39 5 3 18 Baud rate 39 5 4 Troubleshooting 40 5 5 Function tables 40 6 Service 42 6 1 Maintenance 42 6 1 1 Availability of services 42 6 1 2 Spare parts availability 42 6 1 3 Cleaning 42 6 1 4 Recalibration 42 6 2 Returning the device to the manufacturer 43 6 2 1 G...

Page 5: ...ng of the product by applying the CE marking CAUTION Responsibility for the use of the measuring devices with regard to suitability intended use and corrosion resistance of the used materials against the measured fluid lies solely with the operator INFORMATION This device is a Group 1 Class A device as specified within CISPR11 2009 It is intended for use in industrial environment There may be pote...

Page 6: ...ion over the Internet e g when communicating by e mail may involve gaps in security It is not possible to protect such data completely against access by third parties We hereby expressly prohibit the use of the contact data published as part of our duty to publish an imprint for the purpose of sending us any advertising or informational materials that we have not expressly requested 1 3 2 Disclaim...

Page 7: ...ation To prevent any injury to the user or damage to the device it is essential that you read the information in this document and observe applicable national standards safety requirements and accident prevention regulations If this document is not in your native language and if you have any problems understanding the text we advise you to contact your local office for assistance The manufacturer ...

Page 8: ...se warnings must be observed without fail Even partial disregard of this warning can lead to serious health problems and even death There is also the risk of seriously damaging the device or parts of the operator s plant WARNING Disregarding this safety warning even if only in part poses the risk of serious health problems There is also the risk of damaging the device or parts of the operator s pl...

Page 9: ... carefully for damages or signs of rough handling Report damage to the carrier and to the local office of the manufacturer INFORMATION Do a check of the packing list to make sure that you have all the elements given in the order INFORMATION Look at the device nameplate to ensure that the device is delivered according to your order Check for the correct supply voltage printed on the nameplate Figur...

Page 10: ...self Figure 2 2 Device description 1 Cleaning nozzle 2 2 NPT 3 Attached cable INFORMATION Look at the device nameplate to ensure that the device is delivered according to your order Figure 2 3 Example for a nameplate 1 Serial number 2 Serial number as barcode 3 Order code 4 Articel number 5 Device name 6 Manufacturer 7 Electronic electric device waste marking WEEE dustbin symbol 8 CE marking 9 Cou...

Page 11: ...ng image INFORMATION Inspect the packaging carefully for damages or signs of rough handling Report damage to the carrier and to the local office of the manufacturer INFORMATION Do a check of the packing list to make sure that you have all the elements given in the order INFORMATION Look at the device nameplate to ensure that the device is delivered according to your order Check for the correct sup...

Page 12: ...has a 4 20 mA current loop and can be operated with external signal converter or without If operated without the external converter the converter is needed as configuration and calibration tool A complete measuring point consists of at least two or three parts Optional A signal converter for configuration only as calibration tool or for operation OPTISENS TUR 2000 sensor including cable Immersion ...

Page 13: ... the measurement windows as described on page 42 The device must not be heated by radiated heat e g exposure to the sun to a electronics housing surface temperature above the maximum permissible ambient temperature If it is necessary to prevent damage from heat sources a heat protection e g sun shade has to be installed CAUTION Do not turn the cable gland on the sensor this might cause a sensor le...

Page 14: ...e sensor into the immersion assembly For further information refer to the manual of the assembly 2 Connect the sensor to the signal converter or directly to the control system 3 Configure the measurement range Calibrate the sensor 4 Install the sensor into its final measuring location 3 8 Sensor use without cleaning function Before installation and immersion the sensor check the following order Do...

Page 15: ...3 9 5 mm 1 4 3 8 in suitable length prepare a connection for the cleaning hose push the hose onto the cleaning connector put the sensor cable and cleaning hose through the adequate extension pipe of the mounting assembly The pressurised air is to be provided and must be clean with a max of 3 bar The typical cleaning time is 15 seconds and the typical cleaning frequency is 2 times day but this will...

Page 16: ...directly only 4 20 mA or to the MAC 100 signal converter For further information refer to Connecting the sensor to PC on page 22 refer to Connecting the sensor directly to the control system on page 22 and refer to Connecting the sensor cable to the signal converter on page 20 For removing the sensor repeat the steps above in reverse order Calibrate the sensor before installing it into the assembl...

Page 17: ...on the electrical connections may only be carried out with the power disconnected DANGER Observe the national regulations for electrical installations WARNING Observe without fail the local occupational health and safety regulations Any work done on the electrical components of the measuring device may only be carried out by properly trained specialists INFORMATION Look at the device nameplate to ...

Page 18: ...ot perform any installation works The function of the housing is to protect the electronic equipment from dust and moisture Assure that there is a fuse protection for the infeed power circuit Inom 16 A and a disconnecting device switch circuit breaker to isolate the signal converter Check the nameplate and assure that the power supply meets the voltage and frequency of the device You can operate t...

Page 19: ...sing it down and pulling forwards at the same time 2 and 3 be careful and do not disrupt the retaining band it prevents the cover from getting lost Use a slotted screwdriver with a tip of 3 5 x 0 5 mm 0 14 x 0 02 to push down the lever connect the wires to the terminals and pull up the levers again 4 and 5 Refasten the cover of the power supply terminal close the converter housing and tighten all ...

Page 20: ...error current DANGER All work on the electrical connections may only be carried out with the power disconnected Take note of the voltage data on the nameplate INFORMATION Look at the device nameplate to ensure that the device is delivered according to your order Figure 4 2 Sensor connection terminals on the signal converter MAC 100 1 Sensor connection terminal 2 Relays 3 Terminal block A terminals...

Page 21: ...tion of the sensor cable Connecting the sensor cable to the signal converter Remove the terminal cover Thread the sensor cable through the middle right cable gland 1 Push the wires 7 into terminal J 3 Q 4 Y5 V 6 and S 2 To remove a wire press down the white clip 8 on the corresponding terminal and pull the wire out Figure 4 3 Connecting the sensor cable ...

Page 22: ...ecting the sensor to PC Connect the device to the converter or directly to the control system as stated in above chapters The shield is not connected to the probe but it must be connected to the ground CAUTION Avoid cable interruptions If necessary use adequate junction box Keep the cable far away from power cables inside of the switch board Wire Function Green current loop White current loop Meta...

Page 23: ...n menus offering the possibility to change presets Measuring mode Main menu Submenu Parameter 3 or 4 pages scrolling with or 2 5 s A quick setup A quick setup A quick setup A quick setup A1 language For further information see function tables A2 Tag A3 manual hold A4 set clock A5 reset errors A6 analog outputs A6 1 measurement A6 2 turbidity A6 3 range A6 4 time constant A17 offset A18 temperature...

Page 24: ...pends on the selected hardware setting in C setup C3 I O To start a simulation process refer to the MAC 100 manual B3 simulation I O B3 6 simulation R3 To start a simulation process refer to the MAC 100 manual B4 actual values B4 1 operating hours B4 2 process input A Menus which show the corresponding actual reading existence of the single submenus depends on the hardware setting and the used sen...

Page 25: ... the single submenus depends on the hardware setting and the used sensor For further information see function tables C1 1 parameter C1 25 range C1 27 offset C1 28 temperature offset C1 29 product cal C3 I O C3 1 hardware C3 8 current R3 C5 device C5 1 device info C5 2 display C5 3 1 meas page C5 4 2 meas page C5 5 graphic page C5 6 special functions C5 7 units D service D service D service D servi...

Page 26: ...n and free from any deposits on the measurement windows Please clean with clear water and a soft cloth as some deposits can be clear and be visible for the measurement electronics due to infrared operation but not visible to our eye INFORMATION It is suggested to verify the sensor periodically and calibrate in case of need to get the requested accuracy on the specific application CAUTION Never tou...

Page 27: ...lease the button You are on the main menu level Press or until the main menu quick setup quick setup quick setup quick setup is highlighted MAIN MENU A quick setup A quick setup A quick setup A quick setup B test C setup D service Press to enter the chosen menu You are on the first submenu level In the upper line of the display quick setup quick setup quick setup quick setup appears beneath the su...

Page 28: ...s input A process input A process input A is highlighted Press to enter the chosen menu You are on the second submenu level In the upper line of the display process input A process input A process input A process input A appear Press or until the submenu product cal product cal product cal product cal is highlighted Press to enter the chosen menu The actual measured value is displayed Press for mo...

Page 29: ... the next digit in the displayed value To select the standard value e g 0 000 NTU confirm with The sensor default is 0 020 NTU The submenu calibrate zero start calib calibrate zero start calib calibrate zero start calib calibrate zero start calib is displayed Press to start the calibration The message zero calibration successful zero calibration successful zero calibration successful zero calibrat...

Page 30: ...art calib sensitivity calibration start calib sensitivity calibration start calib is displayed Press to start the calibration The message sensitivity calibration successful sensitivity calibration successful sensitivity calibration successful sensitivity calibration successful is displayed Press to proceed If calibration successful calibration successful calibration successful calibration successf...

Page 31: ...it will switch to digital communication Else it will remain in analog operation The calibration and programming via PC gives additional possibilities concerning the signal calibration and is straight forward INFORMATION In order to show the history of the calibrations the signal converter has a calibration logbook function Up to 64 entries of the calibration history are stored including date and t...

Page 32: ...rder to avoid conflicts 5 2 5 Sensor mode options As factory setting the sensor is configured in analog operating mode current loop 4 20mA This is within the programming digital mode 0 Analog mode After 2 seconds from switching the sensor on the current will provide for 8 seconds a fixed current value depending of the selected scale 8 mA for 4 000 NTU scale 12 mA for 40 00 NTU scale 20 mA for 400 ...

Page 33: ...ital mode the operator is able to perform the calibration and to configure the sensor via the RS485 connection The digital mode will be maintained until the next time the sensor is switched on 5 3 Commands for operation via RS485 Through the Help command is possible to get a list of commands implemented in the probe 5 3 1 Help Command Format ID H For example if ID 14 type 14H or 00H By sending the...

Page 34: ... unit of the parameter 4 ch aligned on the left 1 space ASCII 32 At the end of the record the probe sends the data of the last calibration than 2 bytes with the BCC The transmission is ended with a carriage return cr and line feed lf sequence BCC calculation The BCC is calculated as XOR of all bytes of the message excluded cr and lf and divided in 2 nibble The 2 nibble are then transformed in ASCI...

Page 35: ...ple if ID 14 and value of the turbidity standard 0 02 NTU type 14T0 02 or 00T0 02 In order to verify if the inserted value has been accepted digit the command H Probe response ID M x command executed correctly Probe response none command does not run properly INFORMATION For this Command and for all the following Commands shown in this manual the answer of the probe will be a replica of the receiv...

Page 36: ...ation send the command ID A the reading must be close to Zero standard solution value Send the command ID H to control the line Zero calibration ok error If the calibration is not performed error the probe will maintain the previous zero value Verify if the standard solution and check the surface of the lens and eventually clean by using soft tissue cloth The message Zero calibration not done mean...

Page 37: ...gnal the probe will maintain the previous sensitivity value The message Sens Calibration not done means the sensitivity has turned to the default value through the command ID SR 5 3 10 Sensitivity reset Command Format ID SR For example if ID 14 type 14S or 00S The Command turn the sensitivity to the default 100 value Verify the result by means of the command ID H and check the line Sens calibratio...

Page 38: ...bidity signal In the analog operating mode the violation of the fouling or dry alarm limits or the high external light is signaled by the current loop flashing at 3 80 mA and 21 0 mA every 16 seconds The sequence is ended when all the alarm condition are not present 5 3 14 Check fouling Command Format ID F x For example if ID 14 and we need to set the alarm for dirty cell to 10 of the check signal...

Page 39: ...ter no syntaxes limitation 5 3 17 ID value Command Format ID I x For example if ID 14 and we need to set the ID at 07 type 14I07 or 00I07 The new ID will be available from the next start up of the probe 5 3 18 Baud rate Command Format ID B x For example if ID 14 and we need to set the speed 2 4800 baud type 14B2 or 00B2 The new baud rate will be available from the next switching on of the probe Pr...

Page 40: ...r does read too high in a 1 NTU standard Reflection from cup used Use different bucket tilt sensor at an angle and cover cup bucket No connection between PC and sensor within 8 seconds Terminal program was connected before sensor Power up sensor and connect terminal program Sensor does not answer via RS485 but is connected the correct way 2400 4800 9600 or 19200 bits Baud rate programmed wrong Try...

Page 41: ...range 220 Sensitivity 50 0 200 0 100 Alarm from check signal and if external light too high On Off On Min alarm fouling or LED damage 0 0 100 0 10 0 Max alarm dry cell 100 0 200 0 200 0 Alarm indications Analog mode loop sequence 3 80 mA and 21 0 mA Digital mode check error command A Temperature Internal sensor Pt100 for optical efficiency External light evaluation Scale 0 0 100 0 Alarm On Off On ...

Page 42: ...irt deposits on the measurement window may lead to erroneous results Rinse the device thoroughly with tap water and only use a soft tissue to carefully remove deposits from the measurement window The sensor housing may be cleaned by scrubbing it with a suitable brush Make sure you do not touch or scratch the measurement window 6 1 4 Recalibration It is recommended to check the sensor in regular in...

Page 43: ...uarding the health and safety of the personnel the manufacturer may only handle test and repair returned devices that have been in contact with products without risk to personnel and environment This means that the manufacturer can only service this device if it is accompanied by the following certificate see next section confirming that the device is safe to handle WARNING If the device has been ...

Page 44: ...ice when it is returned Date Signature Stamp LEGAL NOTICE Disposal must be carried out in accordance with legislation applicable in your country Separate collection of WEEE Waste Electrical and Electronic Equipment in the European Union Separate collection of WEEE Waste Electrical and Electronic Equipment in the European Union Separate collection of WEEE Waste Electrical and Electronic Equipment i...

Page 45: ...n or absorption measurement is used for higher concentrations The device measures scatted light at 90 which is according to ISO 7027 DIN EN 27027 to be used for turbidity values below 40 NTU The NIR light source and receiver are positioned in a 90 angle to each other The light transmitted from the source is directed in equal strength to the reference detector and into the medium Light is scattered...

Page 46: ...000 NTU FNU 0 40 00 NTU FNU 0 400 0 NTU FNU default Sensitivity NTU 70 130 NTU Zero NTU 0 400 NTU all scales Sensor type Installation with MAC 100 signal converter or directly to control system via 4 20 mA Shaft diameter 60 mm 2 36 Shaft length 166 mm 6 5 Sensor thread 2 NPT Hose diameter 6 3 9 5 mm 1 4 3 8 Operating conditions Temperature range 5 50 C 23 122 F Pressure range Max 1 bar at 25 C 14 ...

Page 47: ... max at 24 VDC Digital output RS485 Approvals and certifications CE This device fulfils the statutory requirements of the EC directive The manufacturer certifies successful testing of the product by applying the CE mark Electromagnetic compatibility EMC Directive 2004 108 EC valid until 2016 04 19 or EMC Directive 2014 30 EU valid from 2016 04 20 EN 61326 2 3 2013 EN 55011 2009 A1 2010 Dimensions ...

Page 48: ...vices Head Office KROHNE Messtechnik GmbH Ludwig Krohne Str 5 47058 Duisburg Germany Tel 49 203 301 0 Fax 49 203 301 10389 info krohne com KROHNE 07 2017 4001970202 MA OPTISENS TUR 2000 R01 en Subject to change without notice The current list of all KROHNE contacts and addresses can be found at www krohne com ...

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