Accurate measurement of CO2 in the food and beverage industry
Many food and beverage applications require accurate CO2Measurement, many in the industry on how to better achieve this remaining questions.In this article, I'll explain how to accurately reliable CO2Measurement, at the same time, a brief introduction to some different requirements and the environment.
Why do we need accurate CO2Measurement?
However, finished product, process or demand are similar in almost all application target, namely "throughCO2measurementTo accurately reflect the environmental conditions and meet the needs of application ".Carbon dioxide既是生物体新陈代谢的产物，也是光合作用的必需原料，因此我们在考虑工艺安全或讨论生产效率或产品质量时，不能忽视二氧化碳的重要性。通过了解 CO2How to play a role in the specific process, we can fully optimized to improve the results.
Make staff more safety
Let's start with important topic "safe".Carbon dioxide浓度过高的情况是十分危险的，因为氧气被 CO2The alternative.CO2Too much will have a negative impact on people's comfort, this is most of the countries/regions will enforce workplace co2 concentration limit.In the United States, for example, general requirements within 8 hours of work hours, CO in the workplace2Concentration is not more than 5000 PPM.
Measuring carbon dioxide for safety levelBeverage industryParticularly important: fermentation tank under the condition of overpressure release through the relief valve CO2;Soft drink filling line tank or pipeline is also the risk of gas leakage.CO2Is heavier than air, would accumulate without ventilation, pose a serious threat to workers health.This is why the CO2Measurement sensors should be placed as close to the ground.
Another involves the use of a security measure isrefrigeration.CO2Another identity is refrigerant R744, it's many other gases used for refrigeration than before more environmentally friendly.It is widely used inSupermarkets and grocery stores freezer, freezer, small refrigerator and cold storage industry.As with other refrigeration systems, CO2Refrigeration system due to improper maintenance, mechanical wear, accidental damage, improper installation, or just because it has been running under high pressure, resulting in leakage.
CO2Is a tasteless colorless gas, if the CO2Monitoring equipment not properly maintained, so people might not be able to find leaks.althoughVisa pull CARBOCAP ®Products without safety certification, but many customers find them perform well in early warning and monitoring.In order to be able to detect the CO as soon as possible2, transmitter should be installed near the potential leakage points such as flanges, valves, pressure reducer, or the location of the pump.
To optimize the production efficiency
Is of vital importance to the high production efficiency in the modern manufacturing industry.The food industry is a typical small profits prolific industry.If you want to foothold in the industry, production efficiency and effectiveness is very important.greenhouseIs through CO2A good example of production control.CO2Reach a certain concentration, or lettuce cucumber growing will be particularly good.In this case, the CO2Used as fertilizer to plant, that means making sure that its concentration is very important, right too high or too low will affect the quality of crops.
To optimize the quality of the products
In recent years, CO2Also in the textile, papermaking, food, and baking industries in its application in the production process of fermentation and enzyme.Fermentation usually in bioreactor, must be accurate monitoring.CO2Is a byproduct of the process, by monitoring its concentration is needed to understand the process of progress.
CO2Can also be used to improve and maintain the quality of the product.Add in the food packaging within CO2Can greatly extend the meat, cheese, fruit and vegetable storage and shelf life.For example, meat packing CO2At high concentrations can inhibit the growth of bacteria and maintain the meat of natural colour and lustre.Similarly, in the process of long-term storage or transportation, high CO2Concentration can delay or prevent fruit rot.
Sensors placed
Sensors usually need to put in the pipeline, interior or machine.measurement点有时位于靠近天花板的位置，这意味着它位于高处且难以取下。在这种情况下，使用具有长期测量稳定性的传感器会很有帮助，这样可以降低额外的传感器检查需求。对于某些应用，宜使用单独的采样泵和管路将气体样本传输至远程 CO2Instrument, rather than trying to install the sensor directly in the process.For example, it is not possible to sensors placed in a hot oven, but can be easily drawn from process gas samples.Make sampler is more economical choice, it can collect gas samples from several different position.Later, with the help of the multiplexer, can use a single detector measured per sample in sequence.If you don't need continuous real-time measurement, this arrangement is feasible, but if you need to continuous measurement, each position requires a special sensor.
Keep the sensor clean
In the process of the food industry must follow the good health standard.Therefore, the sensor must be able to tolerate common cleaner, such as alcohol cleaner or hydrogen peroxide (H2O2).In addition, the surface of the sensor must be designed to be easy to do, no holes or seam, can wipe just finish cleaning.The sensor不得由会释放有害化学物质的材料制成，也不得有容易松动并掉入工艺流程中的部件。尘土飞扬的禽舍等环境需要监测许多点，这给测量带来了更多挑战。蘑菇棚需要使用高压清洗机定期清洁整个房间，因此要求包括 CO2Sensor devices are able to directly under the water jet.
Maintain CO2The sensor
Even if your sensor device has a long-term stability and accuracy, but in the long run, always need to maintain sensor.Some sensors is a one time, the whole device needs to be replaced, such as chemical battery type of sensor is a one-off.As sensor using time grew, the detection sensitivity of the sensor may also appeared some problems.As replacement costs began to increase, in the long run, disposable sensors could be an expensive option.
More economical choice is to use a replaceable filter protection CO2Sensors.Accumulation of dirt, grease or dust filter can prevent gas exchange of sensor and should be replaced.
For the aging CO2Measuring instrument, should according to the known reference to calibration or put them back to the manufacturer for repair.Can be another recentlyPortable handheld instrument calibratedUsed as a reference instrument.Whether you need to determine the sensor maintenance, relatively simple method is in portable handheld instrument and CO2Comparison between measuring instrument.
Details about how to CO in harsh conditions2Measure and join us will be held on March 19, free web seminar.
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