SCY-2气体测定仪是由上海昕瑞仪器仪表有限公司研发生产的一款便携式气体检测仪器。该仪器适用于学校、科研、工业、环保、医学、化工、农业等多个领域。它特别适合用于蔬菜、粮食、烟草、果品的保鲜和气调储藏过程中的二氧化碳浓度测定。此外，该仪器还可以对植物的呼吸进行测定，并且在学校中可用于对学生进行呼吸功能的测定。对于窖炉等的燃烧废气，SCY-2气体测定仪也能进行二氧化碳含量的测定。

SCY-2气体测定仪具有交直流两用功能，配有镍氢充电电池、免维护充电器和内置抽气泵。其操作简单，易于检测，并且具有低电压报警功能。该仪器采用液晶显示器，功耗低，读数方便。其便携式包装箱设计使其特别适合于移动或野外使用，携带起来非常方便。

在技术参数方面，SCY-2气体测定仪的测量范围为二氧化碳0-99％。其精度为0-50％时≤±3.0％±1个字，50-99％时≤±5.0％±1个字。响应时间为二氧化碳≤50秒（达到被测气体浓度90%时所需时间）。该仪器的环境条件要求为温度0-45℃，相对湿度小于90％，被测气体中无甲烷、二氧化硫等干扰气体及无腐蚀性气体。其电源为AC 220V/50Hz，DC 12V（机内镍氢电池），泵不工作时功耗≤650mW，泵工作时功耗≤2.4W。仪器体积为208×190×80mm，重量为2Kg。

目前，SCY-2气体测定仪的市场价格在2800元到3200元之间。具体价格可能会因促销活动或销售渠道的不同而有所变化。

The SCY-2 gas analyzer is a portable gas detection instrument developed and produced by Shanghai Xinrui Instrument Co., Ltd. It is suitable for a wide range of fields, including schools, research, industry, environmental protection, medicine, chemical industry, and agriculture. The instrument is particularly well-suited for measuring the concentration of carbon dioxide in the preservation and controlled atmosphere storage of vegetables, grains, tobacco, and fruits. In addition, it can also be used to measure the respiration of plants and for respiratory function tests of students in schools. The SCY-2 gas analyzer can also measure the carbon dioxide content in combustion exhaust gases from kilns.

The SCY-2 gas analyzer features both AC and DC power options, equipped with a nickel-hydrogen rechargeable battery, maintenance-free charger, and an integrated suction pump. It is easy to operate and comes with a low voltage alarm function. The instrument uses an LCD display, which is low-power-consuming and easy to read. Its portable case design makes it ideal for mobile or field use and is very convenient to carry.

In terms of technical specifications, the SCY-2 gas analyzer has a measurement range of 0-99% for carbon dioxide. Its accuracy is ±3.0% ±1 digit for 0-50%, and ±5.0% ±1 digit for 50-99%. The response time for carbon dioxide is ≤50 seconds (the time required to reach 90% of the measured gas concentration). The instrument requires an environmental condition of 0-45℃ temperature and <90% relative humidity, with no interfering gases such as methane or sulfur dioxide and no corrosive gases in the measured gas. The power supply is AC 220V/50Hz, DC 12V (nickel-hydrogen battery inside), with a power consumption of ≤650mW when the pump is not working and ≤2.4W when the pump is working. The instrument has a volume of 208×190×80mm and a weight of 2Kg.

Currently, the market price of the SCY-2 gas analyzer ranges from 2800 to 3200 yuan. The specific price may vary due to promotional activities or different sales channels.