Carbon dioxide gas detectors used in those places

1. Planting greenhouses Using carbon dioxide detectors Carbon dioxide is one of the raw materials for photosynthesis of green plants, and 95% of the dry weight of crops comes from photosynthesis. Therefore, carbon dioxide has also become an important factor affecting crop yields. The cultivation of plastic greenhouses keeps the crop in a relatively closed place for a long period of time. The carbon dioxide concentration in the greenhouse varies greatly within one day, reaches a maximum of 1000 to 1200 ppm before sunrise, and drops to about 100 ppm after 2.5 to 3 hours after sunrise, which is only atmospheric concentration ( About 30% of 330ppm) has been maintained until 2 hours in the afternoon before it begins to rebound and returns to atmospheric levels around 4PM. The carbon dioxide concentration required for vegetables is generally 1000 to 1500 ppm. Therefore, the shortage of carbon dioxide in plastic greenhouses is quite serious and has become an important factor affecting the output of plastic greenhouse vegetables. The installation of a carbon dioxide monitor in a plastic greenhouse can ensure that the carbon dioxide monitor can promptly alarm when the concentration is insufficient, thus using gas fertilizer. Ensure that vegetables, edible fungi, flowers, Chinese medicine, etc. are available in the morning, with high quality and high yield.

1.1 Effect of carbon dioxide application on vegetable yield According to China Agricultural Information Network, cucumber, tomato and summer squash are common three vegetables. In response to this actual situation, CO2 fertilization experiments were conducted on these three types of vegetables, and the yield increase effect was very significant. . Three kinds of vegetables were respectively applied with a carbon dioxide concentration of 1,000 mg/kg. The average cucumber yield was 465.5 kg per 667 square meters, an increase of 27.1%; tomato average yield was 410.7 kg per 667 square meters, an increase of 23.6%; zucchini production was 373.2 kg per 667 square meters. , an increase of 21.9%.

1.2 Effect of Carbon Dioxide Application on the Characters of Vegetable Plants After applying carbon dioxide in plastic greenhouse vegetables, the plant traits were significantly better than those without application. After applying carbon dioxide to cucumbers, the plants grew well. Plants that were applied were 15-20 cm more than those that were not applied. They were 2-3 leaves longer, and the leaves were significantly larger and thicker. The leaf area per plant was 0.19-0.3 square meters, which was earlier than 2 plants. Nodes are melons, and the fruit set rate is high. The number of single plants is 3 to 5, the melon strips are dark green, and the top 4 to 5 cm of melon strips are yellow. Moreover, the application of carbon dioxide gas fertilizer can also enhance the plant's ability to resist cold and disease. After applying carbon dioxide to tomatoes, the plants increased significantly, the thick green leaves became thicker, the fruits matured earlier, and the surface of the fruits became bright. The change of the long phase of the carbon dioxide in the zucchini was significantly greater than that of the non-application of the zucchini. The applied leaves were hypertrophic, the stem was thick, the plants were large and strong, and the non-applied plants were small and weak. And Shi's performance was early.

2. Large animal husbandry farms:

Some large-scale farms, such as cattle, pigs, and chickens, are farmed in closed or semi-closed pens. Because of the large number and density of livestock and poultry, these animals exhale large amounts of carbon dioxide. Long-term in a confined space, it is not ventilated. If the concentration of carbon dioxide is too high, the animals will lead to hypoxia. The symptoms include lack of energy, lack of energy, loss of appetite, delay in weight gain, and high incidence of symptoms. At the same time, the lack of air circulation can easily lead to epidemic outbreaks. For example, poor ventilation and ventilation in pig houses can lead to a series of problems such as reduced immunity, decreased feed conversion rate, and respiratory infectious diseases. In recent years, pig mycoplasma pneumonia (MPS), porcine reproductive and respiratory syndrome (PRRS), porcine atrophic rhinitis, porcine infectious pleuropneumonia (APP), pseudorabies, swine flu, and pig loop virus (PCV2) The infection caused an increase in the incidence of porcine respiratory system and increased the risk. It is difficult to control after onset; the incidence is generally 40 to 50%, and the mortality rate is 5 to 30%. However, if the ventilation is too fast in winter, the heat in the pig house will be taken away, which will cause the room temperature to decline, the metabolism of the basal pig to increase, and the growth to slow down; Heat can also make the pig feel uncomfortable. According to relevant professional data, the economic losses caused by bad ventilation have been confirmed. The cost of raising the pigs caused by poor ventilation of the pig house increased by 10% to 20%. Therefore, the detection of carbon dioxide concentration, temperature, and ventilation rate in the breeding enclosures is very important. The above data can be monitored at any time by installing carbon dioxide and temperature monitors in the breeding houses and connecting them with the fans. When the carbon dioxide concentration exceeds the limit, the monitor alarms and starts the fan to automatically replace fresh air; at the same time, the temperature and ventilation rate of the house are monitored at any time.

3, do energy-saving environmental protection products manufacturers:

Here we take the example of manufacturers of energy-saving doors and windows: There are many energy-saving doors and windows that can be ventilated without opening windows. In order to prove the energy efficiency and ventilation of the products, manufacturers give customers carbon dioxide after installing energy-saving doors and windows. The temperature monitor allows the customer to measure the indoor CO2 concentration at any time. This machine can also monitor the indoor temperature and ventilation rate. With these data that can be scientifically monitored at any time, these customers feel more comfortable using energy-saving doors and windows.

4, underground safety production:

There are many toxic gases and carbon dioxide generated in underground operations. The high concentration of carbon dioxide causes severe oxygen deficiency in the underground, which makes it impossible to breathe and does not work properly. A carbon dioxide monitor can be placed in the downhole working environment and the concentration of carbon dioxide can be monitored at any time. Within the scope of normal work, downhole temperature can be monitored at the same time, thus avoiding some accidents and doing related protective work.

5, kindergartens, offices, schools, supermarkets:

For example, there will be dozens of students or hundreds of students in school classrooms. Over time, the concentration of carbon dioxide will increase without opening windows. This will cause teachers and students to feel dizzy or obsessive and reduce learning efficiency. If there is a carbon dioxide monitor in each classroom, adjust the machine to a suitable alarm value. If it is alarmed, you can open the window and change the fresh air, that is, to ensure the quality of the air, but also to allow the students to have a quiet A learning environment free from outside interference.

In public places where people are more intensive, such as supermarkets and stations, the long-term operation of air-conditioning also leads to the waste of resources. The CO2 and temperature monitor can monitor the CO2 concentration and indoor temperature of these public places at any time, adjust the ventilation rate and temperature as needed, which will save a lot of resources and expenses. CO2 CO2 Detector Use CO2 and temperature detector can be used in agriculture, It is widely used in aquaculture and industrial fields, such as planting greenhouses, animal husbandry farms, production processes of beer, carbonated beverages, energy-saving and environmentally friendly products, and safe production of underground operations. In our daily life environments such as kindergartens, schools, office buildings, shopping malls, supermarkets, stations, hospitals and other public places, the monitoring of carbon dioxide concentration can improve the quality of the air, thereby enhancing learning and work efficiency; and preventing the spread of infectious diseases. Ensure public health and safety.