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Operation

Turb 555 / Turb 555 IR

ba41113e07

04/2009

4.2

Measuring turbidity

4.2.1 Measuring methods of the Turb 555 and

Turb 555 IR

Measuring system

The measuring system consists of a light source, the cuvette
with the sample, a beam splitter and a total of four light de-
tectors:

1 Light source: Tungsten lamp (Turb 555) or

infrared light source (Turb 555 IR)

2 Reference detector

3 Lens

4 Cell with sample

5 Beam splitter

6 Transmission detector for low transmission (high

turbidity)

7 Transmission detector for high transmission (low

turbidity)

8 Nephelometric detector

Summary of Contents for Turb 555

Page 1: ...ba41113e07 04 2009 Turb 555 Turb 555 IR Operating Manual Turbidity measuring instrument...

Page 2: ...rences between this operating manual and your instrument Also we cannot guarantee that there are absolutely no errors in this manual Therefore we are sure you will understand that we cannot accept any...

Page 3: ...17 4 1 1 Marking and aligning cuvettes 17 4 1 2 Venting the sample 19 4 2 Measuring turbidity 20 4 2 1 Measuring methods of the Turb 555 and Turb 555 IR 20 4 2 2 Single measurements 23 4 2 3 Measuring...

Page 4: ...8 4 6 Documentation 59 4 6 1 Connecting the printer or PC 59 4 6 2 Output of measured values 59 4 6 3 Calibration record 61 5 Maintenance cleaning disposal 63 5 1 Replacing the lamp module 63 5 2 Clea...

Page 5: ...s easily and reliably The measuring method used in the Turb 555 IR corresponds to the ISO 7027 DIN 27027 The measuring method used in the Turb 555 follows the US EPA construction recommen dations 1 2...

Page 6: ...Turb 555 IR is operated via a 6 key touch pad and a display LCD Key Function Switch the measuring instrument on off Confirm input Save output measured value Increase values Select settings Reduce val...

Page 7: ...g possible indications The display has a background illumination which facilitates reading the displayed information even when the ambient light is bad 1 Code symbol Prompt to input the code 2 Measure...

Page 8: ...rview Turb 555 Turb 555IR 8 ba41113e07 04 2009 1 3 Sockets 1 Socket for plug in power supply unit 2 Dry air purge system inlet 3 Dry air purge system outlet 4 RS232 interface 5 Plug in power supply un...

Page 9: ...be available within the vicinity of the measuring instrument Target group The measuring instrument was developed for use in the lab oratory Thus we assume that as a result of their profes sional trai...

Page 10: ...ion and oper ating safety The smooth functioning and operational safety of the mea suring instrument can only be guaranteed if the generally applicable safety measures and the specific safety instruc...

Page 11: ...dverse conditions for a lengthy period of time z is visibly damaged z no longer operates as described in this manual If you are in any doubt please contact the supplier of the in strument Obligations...

Page 12: ...Safety Turb 555 Turb 555IR 12 ba41113e07 04 2009...

Page 13: ...er rings z Three empty cuvettes with marker rings 3 1 Initial commissioning Inserting the short instructions The first time the instrument is commissioned you must in sert the card that was delivered...

Page 14: ...the plug in power supply unit 1 Plug the original WTW plug in power supply unit 3 into the socket 1 of the measuring instrument 2 Plug the suitable adapter 2 into the plug in power supply unit 3 Conne...

Page 15: ...can guarantee that the instrument measures with the accuracy specified in chapter 7 TECHNICAL DATA Note Even if the instrument is not measuring always leave a cu vette plugged in the cuvette shaft so...

Page 16: ...Commissioning Turb 555 Turb 555IR 16 ba41113e07 04 2009...

Page 17: ...The cuvette must be absolutely clean see section 5 2 2 CLEANING THE CUVETTES Marking the cuvette This is how to mark a cuvette empty or full 1 The cuvette must be closed with the black light pro tect...

Page 18: ...turbidi meter 2 Align the marked cuvette so that the arrow on the marker ring points to the marker pin on the locking collar of the cuvette shaft 1 Insert the cuvette in the cuvette shaft of the turbi...

Page 19: ...Larger air bubbles cause sudden changes in the measured values whereas smaller air bub bles are recorded by the instrument as turbidity Therefore avoid or remove air bubbles Avoiding or remov ing air...

Page 20: ...t source the cuvette with the sample a beam splitter and a total of four light de tectors 1 Light source Tungsten lamp Turb 555 or infrared light source Turb 555 IR 2 Reference detector 3 Lens 4 Cell...

Page 21: ...ou have selected NTU or FNU as the measuring unit Nephelometric 90 scattered light measure ment The rays of the undissolved particles scattered in a 90 angle are mea sured The measuring result is give...

Page 22: ...ion 6 7 Nephelo 1 NTU Measuring units Turb 555 IR z NTU Nephelometric Turbidity Units 90 scattered light measurement Nephelometric turbidity unit according to section 2130 of the Standard Methods for...

Page 23: ...re starting to mea sure see section 5 2 2 CLEANING THE CUVETTES Only hold the cuvettes by the top or by the black light protection cap Measuring How to measure the turbidity of a sample 1 Switch on th...

Page 24: ...te shaft of the turbidi meter 6 Align the cuvette see section 4 1 1 MARKING AND ALI GNING CUVETTES 7 Wait for a stable measured value and read it 8 How to output measured values to the printer or PC r...

Page 25: ...s caused by air bubbles are reduced Besides you do not have to use balanced cuvettes for comparative measurements as always the same cuvette is used Note If you measure cold samples the outside of the...

Page 26: ...instrument before installing the pour through vessel Thus the warm up period of your instrument will be over after the installation and you will be able to start mea suring immediately warm up period...

Page 27: ...ew in cuvette 7 into the base of the pour through vessel 5 8 Make sure that the outside of the cuvette is clean dry and free of fingerprints 9 Insert the flow through vessel 5 with the cuvette at the...

Page 28: ...emove the lid from the pour through vessel 2 Slowly pour approximately 500 ml sample into the container of the pour through vessel The sample runs through the vessel into the cuvette and any ex cess s...

Page 29: ...the periodical measured value output you can output the current mea sured values periodically to a printer or PC connected Connection values Note Measuring with the flow through vessel makes it neces...

Page 30: ...instrument before installing the flow through vessel Thus the warm up period of your instrument will be over after the installation and you will be able to start mea suring immediately warm up period...

Page 31: ...screw in cuvette 9 into the lid 4 8 Make sure that the outside of the cuvette is clean dry and free of fingerprints 9 Insert the flow through vessel with the cuvette at the base into the cuvette shaft...

Page 32: ...es the cu vette as it flows through Even the forming of air bubbles is considerably reduced 15 Attach the tubes to the flow through vessel by screw ing the nuts to the threads of the flow through vess...

Page 33: ...urce to the fitting 1 on the back of the instrument using a suitable hose 2 Turn on the purging gas 3 Adjust supply values Maximum pressure 4 bar 60 psi Recommended flow through quantity 2 5 5 l min 0...

Page 34: ...red values that were determined while the code func tion was active are given the QC Quality Control identifier when output to the printer PC see section 4 6 2 OUTPUT OF MEASURED VALUES You can switch...

Page 35: ...to the normal measuring mode a display 1 With the 8 or 2 key set the first digit of the code 2 Press 1 3 With the 8 or 2 key set the second digit of the code 4 Press 1 5 With the 8 or 2 key set the th...

Page 36: ...5 IR For the ratio mode there are no standard procedures The provided AMCO Standards 10 and 100 NTU in the cal ibration kit are designed for nephelometric measurements up to 1000 NTU If you perform a...

Page 37: ...ly possible near the cal ibration point and with reduced accuracy Note For measurements according to DIN ISO or Standard Meth ods it is absolutely necessary to calibrate with Formazin For more informa...

Page 38: ...e scanned one after the other For a precise calibration a certain number of measuring cy cles per calibration standard is required The number of the remaining measuring cycles is displayed in the lowe...

Page 39: ...ontinue the calibration within 5 minutes the instrument automatically re turns to the normal measuring mode It will then continue to work with the previous calibration data Calibration To calibrate yo...

Page 40: ...1 key During the calibration step the c and s sym bols flash The lower display line shows the remain ing measuring cycles until the end of the calibration step 7 Wait until the calibration step is fin...

Page 41: ...In the lower display line the instrument asks you to insert the next calibration standard 10 0K 10000 NTU 12 Insert the 10000 NTU calibration standard into the cuvette shaft 13 Align the cuvette 14 Pr...

Page 42: ...the c and s sym bols flash The lower display line shows the remain ing measuring cycles until the end of the calibration step Then the calibration step is carried out once more 19 Wait until the calib...

Page 43: ...sert the 0 02 NTU calibration standard into the cu vette shaft 25 Align the cuvette 26 Press the 1 key During the calibration step the c and s sym bols flash The lower display line shows the remain in...

Page 44: ...alibration according to the program Calibration record If a printer or PC is connected and switched on a calibration record is automatically output sample printout see section 4 6 3 1 Wait until the c...

Page 45: ...ss 1 3 If necessary enter the calibration code section 4 3 ACCESS CODES 4 Press 1 In the lower display line the instrument asks you to insert the 0 02 NTU calibration standard 5 With the 8 or 2 key ch...

Page 46: ...ou to insert the next calibration standard according to the calibration program 10 Repeat the steps 5 to 9 until all required calibration standards have been measured 11 Press the 8 or 2 key until END...

Page 47: ...tput z Baud rate of the RS232 interface z Calibration interval 1 180 days After the selected calibration interval has expired the Cal indicator appears on the display until the measuring in strument i...

Page 48: ...ailed information on the individual units and the measuring methods they are based on see section 4 2 1 1 In the normal measuring mode press the 8 or 2 key until the iindicator appears on the left par...

Page 49: ...tion 4 2 1 Resolution In the following menu you can select the resolution RES is displayed in the lower display line The current resolution appears in the upper display line 6 Press the 8 or 2 key to...

Page 50: ...are given the QC Quality Control identifier provided that the calibration interval has not ex pired see section 4 6 2 OUTPUT OF MEASURED VALUES To select the code function proceed as follows When you...

Page 51: ...he setup code in the following menu S is displayed 12 With the 8 or 2 key change the first digit of the code 13 Press 1 14 With the 8 or 2 key change the second digit of the code 15 Press 1 16 With th...

Page 52: ...to set the baud rate appears steps 24 to 25 If you want to keep the existing baud rate press 6 in stead of 1 In this case the next setup menu INT will appear immediately Note When the periodical meas...

Page 53: ...xpired and the code function is activated all measured values output to the print er PC are given the QC Quality Control identifier see section 4 6 2 OUTPUT OF MEASURED VALUES When you have exceeded t...

Page 54: ...played 26 To change the calibration interval press 8 or 2 until the required number of days is displayed Options 0 0 180 If you do not want to be automatically reminded when a calibration is due sele...

Page 55: ...irm your selection with 1 The day display flashes 32 To change the day press 8 or 2 33 Confirm your selection with 1 FNU BAUD MEMORY TIME ERROR YEAR PRINT STORE NO I INT EBC NEPH mg l NTU PPM OFFSET T...

Page 56: ...ime In the following menu you can set the time t is dis played The hour display flashes 34 To change the hour press 8 or 2 35 Confirm your selection with 1 The minute display flashes 36 To change the...

Page 57: ...as been input the END display appears in the lower display line Note You can skip individual menus by using the 6 key at any time With 4 you can scroll back through the menus 38 Terminate the setup pr...

Page 58: ...ave to be set again Note After a reset the instrument works temporarily with a factory calibration Recalibrate the instrument in order to measure with the optimum accuracy Setting point Default settin...

Page 59: ...eriodical measured value out put is switched on or off you have two possibilities to trans mit measured values to a printer or PC via the RS232 interface z Periodical measured value output switched of...

Page 60: ...is output z Measured value with unit z Date z Time z QC Quality Control when the code function was active and the calibration interval was not exceeded during the measurement Current time Calibration...

Page 61: ...ty Code OFF 0 02 NTU 29 Mar 2000 14 04 35 10 0 NTU 29 Mar 2000 14 01 53 100 0 NTU 26 Mar 2000 12 56 31 1750 NTU 29 Mar 2000 13 49 00 10000 NTU 20 Mar 2000 10 51 27 Next Cal 28 Apr 2000 Date Date and t...

Page 62: ...Operation Turb 555 Turb 555IR 62 ba41113e07 04 2009...

Page 63: ...t it from the mains 2 Take out the lamp module 3 Press the two grips gently together and carefully pull out the lamp mod ule until the plug in connection 2 is visible 3 Pull the plug in connection 2 a...

Page 64: ...them regularly Note Scratches in the glass change the optical characteristics of the cuvette and falsify the measured value For this reason never use scratched cuvettes 6 Insert the new lamp module la...

Page 65: ...se you have to send the measuring instrument back for service The original packing prevents the measuring instrument from being damaged during transport Measuring instru ment Dispose of the measuring...

Page 66: ...Maintenance cleaning disposal Turb 555 Turb 555IR 66 ba41113e07 04 2009...

Page 67: ...value There is a foreign body in the cuvette shaft Remove the foreign body Cause Remedy Measuring range exceeded During measurement This cannot be remedied Sample is not suitable for the measurement...

Page 68: ...perature of the sample before measuring Run the instrument with the dry air purge system see section 4 2 4 Air bubbles in the cuvette Remove air bubbles Measuring instrument has to be calibrated Calib...

Page 69: ...ument repaired by the WTW service department Cause Remedy Calibration error Incorrect 0 02 NTU or 10 0 NTU calibration standard used Repeat the calibration using the correct calibration standards Caus...

Page 70: ...on key pressing Note If a malfunction cannot be remedied please contact the WTW service department Cause Remedy Severe instrument error Have the instrument repaired by the WTW service department Cause...

Page 71: ...ly Light source Storage 25 C 65 C Operation 10 C 50 C Plug in power supply unit Friwo FW7207 15 Friwo Part No 1812285 Input 100 240 V 10 47 63 Hz 400 mA Installation category II Output 15 VDC 1 A Back...

Page 72: ...232 output Unit Turb 555 Turb 555 IR NTU 0 10 000 0 10 000 FNU 0 10 000 EBC 0 2 450 0 2 450 NEPHELO 0 67 000 FAU 0 10 000 In the range 0 0001 9 9999 NTU max 0 0001 NTU In the range 10 000 99 999 NTU m...

Page 73: ...cal data 73 ba41113e07 04 2009 Test certificates CE cETLus Other data z Automatic self check z Integrated real time clock z GLP function calibration interval monitoring z Safety access codes for calib...

Page 74: ...Technical data Turb 555 Turb 555IR 74 ba41113e07 04 2009...

Page 75: ...urb 555 600545 10000 NTU calibra tion standard for Turb 555 Kal Std 10000 NTU WL 600546 Spare lamp module for Turb 555 Lamp Turb 550 555 WL 600603 Description Model Order no Set of calibration standar...

Page 76: ...Pour through vessel D Turb 600600 Flow through vessel Flow Turb 600605 Empty cuvettes set of 3 pieces Cell Turb SET 600601 Cuvette holder for 6 cuvettes collaps ible KS Turb 600602 Cable to connect t...

Page 77: ...is chapter provides additional information and orientation aids Abbreviations The list of abbreviations explains abbreviations that appear on the display or when dealing with the instrument Index The...

Page 78: ...exceeded EBC European Brewery Convention Units NTU Nephelometric turbidity units FTU Formazin turbidity units FNU Nephelometric Formazin units FAU Formazin attenuation units W01 W05 Warning message se...

Page 79: ...orming 25 29 Course of the measurement during calibration 38 Cuvette outside mists up 25 29 Cuvette shaft purging 33 Cuvettes Aligning a marked cuvette 18 Aligning an unmarked cuvette 18 Balancing 18...

Page 80: ...25 Purge system 25 29 R Ratio method 47 49 Reset 58 Resetting to default settings 58 Resolution 47 49 Rinsing the cuvette shaft 8 S Safe operation 11 Safety precautions 9 Scope of delivery 13 Sequence...

Page 81: ......

Page 82: ...Wissenschaftlich Technische Werkst tten GmbH Dr Karl Slevogt Stra e 1 D 82362 Weilheim Germany Tel 49 0 881 183 0 49 0 881 183 100 Fax 49 0 881 183 420 E Mail Info WTW com Internet http www WTW com...

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