Sonikatsiya paytida haroratni nazorat qilish bo'yicha keng qamrovli qo'llanma

Temperature control in ultrasonic processing and sonochemical reactions is essential for maintaining sample integrity, protecting heat-sensitive compounds, optimizing reaction conditions, ensuring uniform sonication, and enhancing overall safety. All digital models of Hielscher sonicators come with a pluggable temperature sensor and feature sophisticated software to monitor process temperature and to program temperature limits. Learn how temperature control during sonication enables for more efficient, reproducible, and reliable outcomes!

Hielscher Sonicators featuring Sophisticated Temperature Control

Hielscher sonicators are equipped with advanced temperature monitoring and programming capabilities, essential for maintaining precise control during ultrasonic processes. Each digital ultrasonicator model comes with a pluggable temperature sensor that allows for continuous temperature monitoring by inserting it directly into the liquid. This sensor measures the bulk temperature in real-time, ensuring accurate and consistent data.
The sophisticated software integrated into Hielscher ultrasonicators enables users to set a specific temperature range. If the temperature exceeds the predetermined limit, the ultrasonicator automatically pauses. It resumes operation only after the temperature has decreased to a safe, pre-set level. This automatic regulation prevents overheating, protecting both the sample and the equipment.

All temperature readings, along with other critical ultrasonic process data, are automatically recorded onto a built-in SD card. This feature facilitates easy revision and comprehensive process control, allowing users to review and analyze the data for optimal results.

For processes requiring additional temperature management, Hielscher offers sonochemical reactors with cooling jackets. Moreover, heat exchangers and chiller units can be integrated to ensure the process maintains the desired temperature.

A programmable pulsation mode is another feature designed to aid in heat dissipation during sonication. This mode allows the ultrasonicators to operate intermittently, thus preventing the continuous build-up of heat.

All digital sonicator models, starting from 200 watts and above, include temperature control to prevent sample overheating during preparation. The pluggable PT100 temperature sensor continuously measures the temperature in the samples and communicates this information to the ultrasonicator. The system then automatically pauses when the upper temperature limit is reached, resuming only once the sample cools down to the lower limit of the set temperature range.

The temperature control capabilities of Hielscher sonicators, including the use of the PT100 temperature sensor, provide an essential function for maintaining precise and safe ultrasonic processing. These features ensure that the equipment operates within the optimal temperature range, preventing overheating and ensuring the integrity of the sample throughout the process.

About the Importance of Temperature Control during Ultrasonic Processing

Temperature control is crucial in ultrasonic processing and sonochemical reactions. The need for temperature control stems primarily from the requirement of preserving sample integrity, protecting heat-sensitive substances, and improving reaction efficiency.

• Sample Integrity
  Firstly, precise temperature control helps maintain the integrity of the samples being processed. Ultrasonic waves generate significant amounts of heat through cavitation, where microscopic bubbles in the liquid collapse violently, producing localized high temperatures. If the temperature rises uncontrollably, it can lead to the degradation or denaturation of sensitive biological samples, such as proteins, nucleic acids, or other organic compounds. Maintaining a stable temperature ensures that these samples remain intact and functional throughout the process.
• Optimum Process Temperature
  Secondly, many sonochemical reactions are highly temperature-dependent. The rate and outcome of these reactions can vary significantly with changes in temperature. By controlling the temperature, it is possible to optimize reaction conditions, ensuring higher efficiency and better yields. For instance, some reactions might require lower temperatures to prevent side reactions or to stabilize reactive intermediates, while others might need higher temperatures to achieve the desired reaction rates. Precise temperature management allows for the fine-tuning of these conditions, leading to more consistent and predictable results.
• Uniformity in Sonication
  Moreover, uncontrolled temperature increases can lead to non-uniform sonication. As the temperature rises, the viscosity of the liquid can change, affecting the propagation of ultrasonic waves. This can result in uneven cavitation and inconsistent processing, potentially leading to poor reproducibility and suboptimal outcomes. Temperature control ensures that the physical properties of the liquid remain constant, facilitating uniform ultrasonic energy distribution.
• Temperature Control for Safety
  Effective temperature management enhances safety. Uncontrolled, unmonitored high temperatures can pose risks to operators and the laboratory environment. Implementing temperature control measures ensures that the processing environment remains safe and that any potential hazards associated with overheating are mitigated.

How to Use an Ice Bath during Ultrasonic Processing

For sonication of beakers and batches, the use of a simple cold water / ice water or ice bath is a well-established and effective tool to prevent a temperature rise in the sonicated medium.
Preparing an ice water or ice bath for sample cooling during sonication is a straightforward process that helps maintain a consistent and controlled temperature environment, preventing overheating and ensuring optimal results. Here we guide you through the steps of preparing an ice bath:

• Fill the Container: Choose a vessel that is wider than your sonication beaker. Fill the container about halfway with ice. Crushed ice or ice cubes in cold water work best as it provides better contact with the sample container and cools more efficiently. The goal is to create a mixture of ice and water that can surround the sample container completely, providing uniform cooling.
• Submerge the Sample Container: Place the sample container into the middle of the ice water bath. Ensure that the level of the ice water bath reaches at least halfway up the sides of the sample container for effective cooling. If the sample is very heat-sensitive, submerge the container deeper, but avoid letting the water get inside the sample container. Make sure that the level ice water is not too high so that no ice water swashes into the sample.
• Monitor Temperature (Optional): If precise temperature control is necessary, use a thermometer to monitor the temperature of the ice bath. Hielscher digital sonicators come with a pluggable temperature sensor PT100. The PT100 sensors measures the temperature continuously and sends the data to the ultrasonic processor. You can set a temperature limit in the sonicator’s menu. Reaching the set temperature limit, the sonicator automatically pauses until the sample temperature has lowered to a set lower limit and continues then the sonication process.

 
This simple procedure creates an effective ice water or ice bath to maintain a stable, cool environment for your samples during sonication, ensuring optimal performance and preventing overheating.

Ultrasonic Flow Cells with Cooling Jacket

For inline sonication, Hielscher offers flow cells of various volumes and geometries equipped with a cooling jacket.
A cooling jacket of an ultrasonic flow cell serves the function of temperature regulation during ultrasonic processing. The cooling jacket is a chamber surrounding the flow cell, through which a coolant (usually water, e.g. cooled city water) is circulated. Its primary function is to dissipate the heat generated during sonication, maintaining the sample at a desired temperature and preventing overheating. This is crucial for preserving the integrity of heat-sensitive compounds and ensuring consistent and reliable results.
In contrats to cooling, the jacket can also be used for heating the flow cell. By circulating hot water instead of a coolant, the temperature of the flow cell can be elevated. This is beneficial for processes that require higher temperatures, such as thermo-sonication. Thermo-sonication combines the effects of heat and ultrasonic waves to enhance processing efficiency. For example, in food pasteurization, thermo-sonication can effectively reduce microbial load while preserving the quality and nutritional value of the food. Read more about Thermo-Sonication!
This dual functionality of the cooling jacket—providing both cooling and heating capabilities—makes it a versatile tool for various ultrasonic processing applications.

Ultrasonic homogenizer UIP1000hdT with a flow cell equipped with cooling jacket to control process temperature during sonication.

Dizayn, ishlab chiqarish va konsalting – Germaniyada ishlab chiqarilgan sifat

Hielscher ultrasonikatorlari eng yuqori sifat va dizayn standartlari bilan mashhur. Mustahkamlik va qulay foydalanish ultratovush qurilmalarimizni sanoat ob'ektlariga silliq integratsiya qilish imkonini beradi. Qo'pol sharoitlar va talabchan muhit Hielscher ultrasonikatorlari tomonidan osonlik bilan hal qilinadi.

Hielscher Ultrasonics ISO sertifikatiga ega kompaniya bo'lib, eng zamonaviy texnologiya va foydalanuvchilarga qulaylik bilan ajralib turadigan yuqori samarali ultratovush apparatlariga alohida e'tibor beradi. Albatta, Hielscher ultrasonikatorlari Idoralar talablariga javob beradi va UL, CSA va RoHs talablariga javob beradi.

Quyidagi jadvalda ultrasonikatorlarimizning taxminiy qayta ishlash quvvati ko'rsatilgan:

Ultrasonic homogenizer UIP1500hdT with a flow cell equipped with cooling jacket to control process temperature during sonication.

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