Turbidity – New Systems for Brewing Process Optimization

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Turbidity – New Systems for Brewing Process Optimization 3 Turbidity – new systems for brewing process optimization METTLER TOLEDO is well established in the brewing industry, providing analytical inline instruments used by brewers around the world to help establish more cost-effective and reliable process automation. Previously our customers have been able to select systems for continuous measurement of dissolved oxygen, pH and conduc- tivity. However, we are pleased to announce the release of a new turbidity line with specific advantages for brewing – accompanied of course by the same high standard of application and service support that master brewers and quality assurance managers appreciate from a competent partner. What is turbidity? and reproducible measurements. The Turbidity is basically cloudiness in a measurement of forward and 90° scattered liquid, which in wort or beer is caused by light has been proven to be the best optical the presence of undissolved particles such method for turbidity in the range 0…100 as yeast, proteins or diatomaceous earth. EBC (0…400 FTU). Higher particle These particles scatter the incident light concentrations – up to 250 g/l dry matter and consequently lead to a milky or even – are measured with backscattered light opaque appearance of the liquid. The systems. The influence of different colored principle of light scattering is used in liquids on the intensity of the scattered inline turbidimeters to measure the light beams must be compensated by concentration of the undissolved particles: simultaneous measurement of a reference the higher the particle concentration the light beam or by the use of a light source higher the scattered light intensity. The emitting light in the near infrared range of information on particle concentration is the spectra. One of these techniques is directly used to control individual process always implemented in the turbidimeters steps. described here. What are the optical set-ups? Different particle concentration ranges require different optical set-ups for reliable Contents What are the applications? Trb 8300/InPro 8100 system still provides In the brew house, the most important information for enhanced process control. BreweryNews 3 measurement points are after ● the lauter tun In the filtration field, the most impor- ● the whirlpool tant applications are ● hot wort centrifuges ● control of centrifuges (similar to the Turbidity – new systems In all three cases, inline turbidity measuring points in the brew house) for brewing process ● optimization measurement provides valuable informa- control of diatomaceous earth tion on the performance of the wort/solids (Kieselgur) filters New portable DO separation process and allows immediate measurement system action to control the process. For example, Especially in the last application, for control of your after the lauter tun the switching point simultaneous measurement of forward process quality from lautering to wort pumping is opti- and 90° scattered light provides important INGOLD solutions – mized or the self-desludging mechanism of additional information on the type of par- reliable quality helps to a centrifuge is controlled by the turbidity ticle producing the turbidity. Typically, the optimize productivity of value in the clarified wort. The ideal meas- 90° measurement value is between 0.3 and brewing process uring system consists of 2 EBC, representing turbidity caused by ● a Trb 8300 F/S transmitter with high smaller particles such as proteins, which Conductivity control level operation can be a key indicator for the shelf life of in beer filler machines ● an InPro 8400 forward-scatter light the final product. If this value is sensor for direct pipe installation too high, the filter performance can be improved by changes in the Kieselgur InPro 8400 flow-through sensors are dosage. Independent of this value, the for- available for the most common line sizes ward scattered light signal should be and process connections. The built-in smaller than the 90° signal. If this is not sapphire optics easily withstand CIP the case, then there are too many coarse solutions, minimizing the need for service particles in the beer. This is frequently an Imprint and maintenance. early warning sign of filter breakthrough, which could lead to very costly unsched- Publisher In the fermentation sector, back- uled downtime. Mettler-Toledo GmbH scattering systems provide important Process Analytics Im Hackacker 15 information on the cell growth of yeast in The recommended systems for the CH-8902 Urdorf fermenters – the higher the cell concen- filtered beer measurement is Switzerland tration, the higher the light scattered back ● a Trb 8300 F/S transmitter from the yeast cells. A typical measurement ● an InPro 8500 dual-angle sensor Production system consists of (forward/90°) MarCom ● a Trb 8300 transmitter with application- CH-8902 Urdorf, Switzerland specific calibration routines Similar to the InPro 8400 sensor line, Technical articles ● an InPro 8100 probe for direct installa- InPro 8500 sensors are available in widely Mettler-Toledo GmbH tion in a fermenter used line sizes, with different process con- Prozessanalytik ● an InFit 761 CIP housing nections and sapphire optics. D-35396 Gießen, Germany Due to the backscattered light princi- What is your benefit? Illustrations Archive MarCom ple and the use of fiber optic technology, These new turbidity systems are CH-8902 Urdorf, Switzerland the system shows a much wider linear complement- and measuring range than do competing ary to the existing D-35396 Gießen, Germany absorption measurement systems. Even at process analytical solu- extremely high yeast concentrations, tions from METTLER TOLEDO Subject to technical changes. © Mettler-Toledo GmbH 01 / 04 where absorption systems have long and help you to get the best Printed in Switzerland. reached their saturation limit, the out of your process. 2 In Pro 8500. BreweryNews 3 METTLER TOLEDO New portable DO measurement system for control of your process quality! In the beverage industry, dissolved oxygen (DO) concentration is one of the most important process parameters for controlling the quality of the final product. The InTap 4000 e / 4004 e allow users to perform DO measure- ments wherever and whenever required. Typical applications are product quality control or leak detection in process plant equipment. The InTap 4000 e and 4004 e were designed and engineered for maximum operational efficiency, ease-of-handling, reliability, and the highest possible security. A convincing concept in any case – regardless of how you measure dissolved oxygen in your plant, either with or without Zwickel connection hardware. Time saving, easy handling Two-minute-maintenance and user-friendly The modular METTLER TOLEDO INGOLD InTap 4000 e or InTap 4004 e INGOLD sensor design allows easy and DO analyzers can easily be connected to rapid maintenance to save you time. your process. Both analyzers have an intu- itive control menu, resulting in maximum Fast response time and low detec- convenience for users during calibration, tion limit measurement and maintenance proce- Time savings through fast-response dures. measurement of oxygen concentration. Fast tank-to-tank equilibration even at val- Cost-saving ues below 10 ppb. InTap 4000 e and InTap 4004 e offer our best price / performance ratio ever. The Data management sensor maintenance cycle takes just two InTap 4000 e / 4004 e can store up to minutes, thereby minimizing operating 200 measurement values. The accompany- expense. And, the analyzers are now ing Paraly® software allows data transfer powered by three standard, user-replace- to a PC for further processing using stan- able, batteries. dard spread sheet programs. Long lifetime The watertight measuring unit and the impact-resistant protective casing provide assurance for reliable DO measurements, even under the harshest operating condi- tions encountered in the beverage industry. Precise and fast measurements The optimized measuring chamber and advanced sensor design guarantee fast, sta- ble and repeatable results, unaffected by Typical METTLER TOLEDO flow rate or very low DO concentration. INGOLD modular sensor design. InTap 4004 e. 3 BreweryNews 3 METTLER TOLEDO INGOLD solutions – reliable quality helps to optimize productivity The most critical point for pH control throughout the brewing process is certainly during mashing because of the resulting impact upon the subsequent wort and beer processes. Control of dissolved oxygen is just as crucial because it is a fundamental indicator for taste, shelf life and clarity. Oxygen uptake at the lauter tun already has a direct influence on turbidity and color as well as on quality of bitterness. INGOLD DO, pH and newly introduced turbidity measurement systems ensure optimal inline process control and help you produce the highest quality beer possible. pH measurement A complete range of hygienic and CIP suitable pH electrodes are available with low drift and long service life, including gel-elec- trolyte, temperature compensated pH electrodes The InPro 3200 makes high-accuracy performance possible under low pressure due to a partly flowing reference junction. Conversely, the InPro 3100 is purposely EasyClean – the automated designed for high pressure applications. pH measurement In applications with frequent calibra- “Advanced Line” pH transmitter tion requirements automated cleaning and The pH 2100 e offers high quality calibration systems help ensure reliable performance with an easy-to-use interface, measurements, longer sensor life time
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