Formaldehyde detector is commonly used in household formaldehyde detection instruments, below to understand the working principle of formaldehyde detector.

　　1. 甲醛检测仪采用高灵敏度电化学传感器原理，结合单片机技术和网络通信技术，在检测现场采集空气样品。空气中的甲醛被酚试剂溶液吸收并反应生成叠氮。根据颜色深度，在现场直接比色测定。

　　1. formaldehyde detector is based on the principle of highly sensitive electrochemical sensor, and combines single-chip microcomputer technology and network communication technology to collect air samples at the test site. Formaldehyde in air is absorbed by phenolic reagent solution and reacted to form azide. According to the color depth, direct colorimetric determination is carried out in the field.

　　2. 由于室内污染的检测值与检测环境的温度、湿度、气压等有很大的关系，所以根据正常的检测，检测值往往会偏离预期。

　　2. Because the detection value of indoor pollution is closely related to the temperature, humidity and air pressure of the environment, the detection value often deviates from the expectation according to the normal detection.

　　3.一般甲醛检测程序可以快速检测室内甲醛、苯、氨、如甲苯、二甲苯、TVOC污染气体,可以显示日期,测试时间,测试的温度和湿度数据,留给显示液晶屏,采样时间操作,右边中间的热敏打印机,能快速实时采样分析,并且可以检测的日期时间,温度,湿度和标准,甲醛含量及是否合格打印成报告

　　3. general formaldehyde detection program can quickly detect indoor formaldehyde, benzene, ammonia, such as toluene, xylene and TVOC pollution gas. It can display date, test time, test temperature and humidity data, display LCD screen for China, sampling time operation, thermal printer on the right side, fast real-time sampling and analysis, and date, temperature, humidity and standard, formaldehyde content that can be detected. Quantity and eligibility of printed reports

　　4. 甲醛检测采用标准酚试剂分光光度法和进口光电传感器,检测精度高、检出限低,了缺陷的零点的甲醛传感器的电化学检测器的房间容易漂移,取样是容易被其他化学气体。

　　4. The formaldehyde detection adopts the national standard phenol reagent spectrophotometry and the imported photoelectric sensor. The detection accuracy is high and the detection limit is low. The room of the electrochemical detector of the formaldehyde sensor with zero defect is easy to drift and the sampling is easy to be used by other chemical gases.

　　想要知道甲醛检测结构是否可信，可以从以下五个方面分析判断：

　　To know whether the detection structure of formaldehyde is credible, we can analyze and judge from the following five aspects:

　　1、甲醛检测原理，一般说来化学原理的检测相比客观准确，电子感应式的检测存在较大误差。

　　1, the principle of formaldehyde detection, generally speaking, the detection of chemical principles is objective and accurate, and there is a big error in the detection of electronic induction.

　　2、检测封闭的时间，依据GB50325-2010标准应封闭1小时/依据GB/T18883-2002应封闭12小时，过长过短都影响结果的准确性。

　　2. The time of detection closure should be 1 hour according to GB50325-2010 standard/12 hours according to GB/T18883-2002, too long or too short will affect the accuracy of the results.

　　3、甲醛检测时的温度，标准中要求检测时室内温度应在20℃以上（36℃以下为宜），温度过低的话污染物的挥发会偏低。

　　3. When the temperature of formaldehyde detection is too low, the volatilization of pollutants will be lower if the temperature is too low.

　　4、甲醛检测时的环境，正常检测室内空气时应关闭门窗、关闭家具的柜门抽屉、关闭新房系统等，如果关闭了门窗，但是开着家具的柜门抽屉等检测的结果会高于室内空气检测的浓度值。

　　4. The environment of formaldehyde detection should close doors and windows, closing cabinet doors and drawers, closing new house system and so on. If the doors and windows are closed, the detection results of open cabinet doors and drawers of furniture will be higher than the concentration values of indoor air detection.

　　5、甲醛检测操作，检测时操作是否正确、规范、严格，不然也会影响检测的结果。

　　5. Formaldehyde detection operation, whether the operation is correct, standardized and strict, otherwise it will affect the results of detection.