What is the application of zirconia oxygen sensor in the process of liquor brewing?
Liquor has a wide-ranging influence in East Asia. With the development of the economy and the improvement of people's living standards, the price gap between high-end brands and low-end brands has continued to widen, and people have higher and higher requirements for the quality and flavor of liquor.
The process of brewing liquor seems to be artificial or artificial, which is essentially the process of using microorganisms. Winemaking uses the "four major relationships" between microorganisms, namely, symbiosis, antibiotic resistance, antagonism, and inhibition. In liquor brewing, it is inseparable from fillers, such as chaff. The appropriate proportion of chaff determines the porosity and oxygen content in the grains. In all solid-state liquor fermentation, the amount of chaff in Luzhou-flavor liquor The maximum value is about 23%. The purpose is to achieve the required degree of looseness of the glutinous rice. Under the condition of sufficient oxygen, the growth and reproduction of lactic acid bacteria are restricted and inhibited by yeasts, especially molds. The growth and reproduction are at a disadvantage, while a large number of yeasts and molds The growth and reproduction of lactic acid bacteria can quickly control the lactic acid bacteria, so as to achieve the most effective way and purpose of increasing self and lowering milk. At the same time, accumulation can also reduce the amount of chaff in an appropriate amount. More favorable.
In addition, the saccharification power of mid-temperature Daqu is more than 800 units (mg glucose/35℃ hour gram), and it can be fermented directly into the pit without stacking fermentation. However, from the actual brewing operation, after stacking fermentation for 24 hours , Re-entering the fermentation tank, the wine yield rate is higher, and the wine quality is better, especially the content of acetic acid and the corresponding ethyl acetate is higher than the corresponding lactic acid and ethyl acetate, which is in a real sense. It is the most effective way to improve the quality of Luzhou-flavor wine.
With the above knowledge, how can we provide and use oxygen in the environment? There is also a problem involved here, which is the amount of chaff. Generally speaking, after the second round, the amount of chaff for each retort is about 30 kilograms. It must be steamed. The right amount of chaff is good for the glutinous rice. Loose and breathable. The second is to open doors and windows appropriately to increase the oxygen content from the external environment. Yeasts and molds grow and multiply in an oxygen-rich environment. The temperature of the whole glutinous rice is normal, and the hand is inserted into the glutinous rice 20cm. It feels soft and fermented. normal. For the oxygen monitoring in the brewing process, the mining network recommends the British SST threaded high-temperature zirconia oxygen sensor (O2 sensor)-O2S-FR-T2-18C.
O2S-FR-T2-18C/B/A is a zirconia oxygen sensor, the sensitive element is zirconia, and two zirconia disks are used, with a sealed space in the middle. One of the functions of the coil is a reversible oxygen pump, which sequentially fills the sample gas and evacuates this small space. The other disk is used to measure the ratio of oxygen partial pressure difference to obtain the corresponding sensing voltage. When the zirconia disk operates as an oxygen pump, the required temperature of 700 °C is generated by the heating element (the matching circuit board O2I-FLEX-092 can provide heating and linear analog output functions.). The time taken by the oxygen pump to reach the rated small and large pressures in a small space has a corresponding relationship with the oxygen partial pressure in the environment.
Threaded high temperature zirconia oxygen sensor (O2 sensor) O2S-FR-T2-18C/B/A characteristics:
1. Oxidation range: 2mbar－3bar
2. Zirconia detection element
3. Non-consumable technology
4. No need for temperature, no reference gas
5. High precision
7. Work with external interface board
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