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SIGRIST APPLICATIONS IN THE BEVERAGE INDUSTRY Turbidity and colour measurement in breweries.

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Presentation on theme: "SIGRIST APPLICATIONS IN THE BEVERAGE INDUSTRY Turbidity and colour measurement in breweries."— Presentation transcript:

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2 SIGRIST APPLICATIONS IN THE BEVERAGE INDUSTRY Turbidity and colour measurement in breweries

3 S. 2 Parameters to be controlled:  Measurement of turbidity  Measurement of colour  Phase separation / CIP Applications:  Breweries, Wineries, Distilleries  Mineral Water, Soft Drink Industry  Dairy Industry SIGRIST in the beverage industry

4 Turbidity Measurement Measuring principle & particularities

5 S. 4 Turbidity measurement - particularities  Turbidity in liquids is caused by the presence of undissolved matter such as particles, air bubbles, etcetera  Turbidity can be determined by measuring scattered light

6 S. 5 Turbidity measurement - particularities Scattered light intensity depends on:  Concentration  Particle size  Particle shape  Scattering angle  Wavelength L1L1 L2L2 LSLS St ST St

7 S. 6  Light propagation in a homogeneous medium (A)  In the presence of a particle (B) Turbidity measurement principle B A

8 S. 7 Dual angle measurement  Dual angle scattered light measurement to characterize particle size distribution  Introduced by Sigrist in 1988 d =5u d =0.05u 90° I(90) 25° I(25)

9 S. 8 Angular distribution of scattered light for different materials

10 S. 9 Turbidity in beer according to MEBAK / EBC Measurement of turbidity / particle concentration by scattered light  Scattering angle: 25° / 90°  Wavelength: 650nm  30 nm  Calibration with Formazine in EBC

11 TurBiScat and SICON Sigrist new generation of online turbidity monitoring

12 S. 11 Concept  TurBiScat: single or dual angle inline turbidimeter for installation in a Varivent® or compatible housing  Removable electronic section with quick lock  Turbidity measurement with colour compensation  Sealless design, maintenance-free  Separate control unit SICON with touch screen and colour display  Operation with 24VDC (only)  Optional available colour measurement  Extended sensor check function with fouling control  Easy checking with secondary standard  Data logging on SD-card  Various communication interfaces

13 S. 12 Sealless Design Hastelloy C-22 Sapphire Windows Stainless steel Construction

14 S. 13 Varivent® Housing Electronic Section Sensor Head Quick Release Button Construction

15 S. 14 Optics - Absorption  Optional colour measurement  430 nm, interference filter complying to EBC/MEBAK  Max. 50 colour-EBC

16 S. 15 Secondary reference standard for calibration check Construction

17 S. 16 Technical Data TurBiScat  Sensor TurBiScat: ›Measuring principle:90°/25° Scattered light ›Wavelength turbidity:LED 650nm (acc. to MEBAK) ›Wavelength colour (option): LED 430nm (acc. to EBC/MEBAK) ›Measuring range turbidity: EBC / NTU ›Measuring range colour: EBC ›Sample temperature: °C, 180°C with cooling option ›Cleaning:CIP/SIP compatible up to 120°C ›Pressure:10 bar / 100°C ›Ambient temperature: °C ›Ambient humidity: % R.H. ›Protection degree:IP 66

18 S. 17 Technical Data SICON  Control unit SICON ›Power supply: VDC ›Power consumption:8 W ›Display: ¼ VGA, 3.5” ›Operation:Touch Screen ›Ambient temperature: °C ›Ambient humidity: % R.H. ›Protection degree:IP 66 ›Outputs:4x 0/4-20 mA, galvanic separated, 7x digital outputs, 5x digital in-puts, freely configurable ›Digital Interface:Ethernet, SD-Card ›Optional:Profibus DP, Modbus, Profinet

19 S Main Features 1.Maintenance-free design without seals 2.Removable electronic section with quick lock 3.Extended sensor check function with fouling control 4.Dual-angle measurement with colour compensation 5.Optional colour measurement 6.Easy calibration check with secondary standard 7.Control unit with colour touch screen display 8.Variable display of measuring data, graphs, process performance 9.Smooth system integration using various communication interfaces 10.Data logging on SD-card

20 S. 19 Configuration  A system consists of: ›TurBiScat sensor ›Calibration unit with solid reference ›SICON control unit ›Options:  Colour measurement  Cooling option  Communication modules like Profibus, additional analog outputs + +

21 Color Measurement Measuring principle

22 S. 21 Color Measurement Principle -) Light Source Filter Photo- multiplier Data Handling & Control System

23 S. 22 Color in beer according to MEBAK / EBC  Measurement of colour by absorbance  Path-length: 1 cm  Wavelength: 430nm  Calculation: Absorbance value * 25 = colour value in EBC 430 nm 1 cm

24 S. 23 Color measurement: ColorPlus  Introduced in 2003  Easy installation using a standard in-line housing, e.g. Varivent®  Colour measurement at 430nm  Optional turbidity compensation by second wavelength at 700nm  Measuring range: 0.. max. 200 EBC  Accuracy: +/- 0.2 EBC for colour below 10 EBC10 EBC

25 Application in the Brewing industryBrewing industry

26 S. 25 Brew-house applications Turbidity after lauter tun

27 S. 26 Turbidity after whirlpool / separator

28 S. 27 Turbidity after whirlpool / separator  Small amount of hot trub after the whirlpool improves the taste and the stability of the beer Benefits:  better taste  longer shelf time

29 S. 28 Yeast dosing Yeast dosing :  Benefits:  Optimization of the fermentation  shorter fermentation time  save up to one day

30 S. 29 Phase separation yeast / beer after fermentation tank Phase separation Yeast/Beer  Benefits:  Reduction of beer and yeast losses  Improved filtration process

31 S. 30 Phase separation yeast / beer

32 S. 31 Turbidity prefiltration / yeast sediment detection Turbidity Prefiltration / Yeast Sediment detection  Benefits:  Improved filtration process  Reduction of Kieselguhr consumption

33 S. 32 Turbidity measurement in filtration Turbidity after Filtration

34 S. 33 Dual angle measurement in beer filtration  90°-value: 0,2 EBC... 2 EBC  25°-value: 0,05 EBC... 0,2 EBC  25°-value smaller or equal to 90°-value: satisfying operation of filter remaining turbidity by proteins, glucanes, etc.  25°-value higher than 90°-value: significant amounts of yeast and/or Kieselguhr in beer filter breakthrough; unsatisfying operation

35 S. 34 Dual angle measurement in beer filtration  Optimization of filter monitoring and control in breweries: ›90°: Optical beer clarity Small particles ( < 2μm ) like proteins ›25°: Control of filter breakthrough Big particles ( > 2μm ) like yeast cells and Kieselguhr »Benefit: One single instrument to measure 2 different parameters

36 S. 35 Color measurement Color Measurement  Color monitoring of final product  Beer / caramel dosing control to adjust beer color  Blending control of beer mix drinks  Benefits:  constant color  constant quality  constant blending

37 S. 36 ColorPlus: Installation  Filtration line after KG or PVPP (color dosing before filter) ›Important: Watch response time!  Blending units (dosing of water and beer) between filtration and BBT area ›Important: Dosing directly in front of the color monitor requires a static mixer!

38 S. 37 Phase separation beer / water / CIP Phase separation Beer / Water / CIP  Benefits:  Reduction of beer losses  Reduced amount of waste water  Save of water in general  CIP checking

39 S. 38 Quality Control in the laboratory

40 S. 39 Turbidity measurement in the laboratory »Measurement of beer clarity »Accelerated aging »Spot checks of brewing process

41 S. 40 Lab turbidimeter LabScat »Measurement in bottles or cuvettes »Measuring span:0-100 (500) EBC »Dual-angle detection for analysis of particle size trends »Color compensated detection in light and dark beers »Bottle rotation and water bath minimize sources of error »Best comparability to TurBiScat (In-line turbidimeter)

42 S. 41 LabScat: optical setup »650 nm LED light source »3 detectors for simultaneous 90° and 25° scattered light and transmitted light measurement »Color and drift compensation by transmitted light measurement

43 S. 42 LabScat: data handling »Data memory capacity of 999 readings »Data storage with sample ID, date, time »Enter sample ID via PC- keypad or barcode-reader »Direct printing via Centronics interface »Data transfer to PC via RS232 interface

44 S. 43 LabScat: CalibrationCalibration »Factory Formazine calibration »Secondary glass standard for easy adjustment »10 linearization curves for different bottle types

45 Difference in the Turbidity Readings between Online and Lab Equipment Why?

46 S. 45 Difference in the turbidity readings between online and lab equipment – Why? » Wavelength: MEBAK Standard is 650nm, general purpose lab units use mostly white light ( nm) » Color: Lab units with white light offer no colour compensation! » Temperature: Even smallest temperature deviations can lead to major differences!

47 S. 46 Difference in the turbidity readings between online and lab equipment – Why? » Gas Bubbles: Measurements are done in open cuvettes. MEBAK recommends closed cuvettes. » Measurements in bottles: Bottle size and color has an impact on the measurement. Standard lab instruments have no option for correction. » Other Issues: Correct calibration, water bath, measuring angle, optical components

48 S. 47 Turbidity in beer according to MEBAK  Measurement of turbidity/ particle concentration by scattered light  Scattering angle 25°/ 90°  wavelength 650nm +/- 30nm  Calibration with formazine in EBC

49 S. 48 Turbidity in beer, recommended earlier by EBC  Measurement of turbidity/ particle concentration by scattered light  Scattering angle 90°  wavelength 560nm green light  Calibration with formazine in EBC

50 S. 49 » Same angle, same wavelength, same type: Excellent comparability, deviation < +/- 5% » Same angle, same wavelength, different type: Good comparability, deviation < +/ % » Same angle, different wavelength: Hardly comparable, deviation by a factor of 2 (e.g. for green light) or more (white light) » Different angle, different or same wavelength: Hardly comparable, deviation by a factor of 10 or moremore Comparability data for online & lab equipment

51 More Application Examples Spirits Industry Soft drink Industry Sugar Industry Food Industry

52 Applications in distilleries (Whisky)

53 S. 52 Application points (Whisky) » Turbidity after final filter/filter control urbidity in laboratory

54 S. 53 Applications in distilleries (WHISKY) Control and monitoring of: »The filtration process »product quality inline and in the laboratory »Typical acceptable turbidity values are somewhere in the range of NTU »Benefit »ensure high clarity »effective filtration »storage possible at low temperatures

55 S. 54 Semi – automatic LabScat  modified LabScat with a special measuring cuvette, a temperature display and a PC-Software for the control of the system and recording of the data  Additionally, an external cooling thermostat with circulation is required  A commercial PC / Notebook is needed to run the software and control the complete system  Any existing LabScat can be modified and upgraded to be used for temperature-controlled turbidity measurement  The modified LabScat can still be used like a “normal” standard instrument

56 S. 55 Semi – automatic LabScat - Details 1 Measuring cuvette with adapter Baffle with integrated temperature Sensor (park position) Baffle with integrated temperature Sensor (measuring position)

57 S. 56 Semi – automatic LabScat - Details 2 Back side of the modified LabScatCabling and Temperature display box

58 S. 57 Mineral water industry Monitoring of raw water from springs and wells Visual clarity is an important criterion for:  Purity  Bacteriological safety  Consumer acceptance

59 S. 58 Cleaning of iron and manganese impurities by aeration:  Turbidity and / or DOC of raw water  Turbidity and / or DOC after filtration Mineral water industry

60 Thank you for your attention Questions ?


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