随着工业的发展,各种有毒有害气体随之出现,氨气气体报警器在这种情况下也应运而生,它采用高精度的进口传感器作为检测元件,当报警器检测到环境中气体的浓度达到或超过预设的报警指时,报警器通过屏蔽电缆线将信号传到控制器,控制器立即发出声光报警,同时启动排风装置或关闭电磁阀切断气源,彻底阻断气体的泄露.
With the development of the industry, all kinds of toxic and harmful gases appeared, ammonia gas alarm has emerged in this case, it adopts imported high precision sensor as the detecting element, when the alarm is detected gas concentration in the environment reaches or exceeds the preset alarm alarm means, through a shielded cable send a signal to the controller controller immediately audible alarm, start at the same time exhausting device or closed solenoid valve to cut off the gas source, completely blocking the gas leak.
目前国内氨气报警器校准存在很多问题,氨气报警器的检验、检定工作难以正常开展,多数企业的氨气报警器疏于管理,无法保证其指示准确和报警及时,导致生产中存在一些安全和职业危害隐患,济南瑞安电子有限公司分析其中主要原因有以下几方面:
At present, there are many problems of ammonia calibration alarm, alarm test, ammonia verification work is difficult to carry out normal, ammonia gas alarm lax management of most enterprises, to ensure accurate and timely alarm indication, resulting in some hidden trouble existing in the production safety and occupation analysis of Ji'nan Ruian Electronics Co. Ltd, one of the main reasons are as follows:
(1)国内尚未发布氨气报警器检验标准、规范、规程,对氨气报警器的技术指标缺乏具体规定;
(1) the test standards, regulations and regulations of ammonia alarm have not been issued in China, and the technical specifications of ammonia alarm are not specified.
(2)由于氨气性质活泼,标准气体的提供商极少,难以及时买到标准气体;
(2) because of the active ammonia nature and the few standard gas providers, it is difficult to buy standard gas in time.
(3)标准气体的保存期限较短,一般不大于6个月,购置钢瓶装的标准气体给企业造成较大的经济负担.
(3) the storage period of standard gas is short, generally not more than 6 months. The purchase of standard gas for steel bottles will cause greater economic burden to the enterprise.
氨气检测原理一般包括电化学传感器,光学传感器或半导体远离传感器,采样方式分为泵吸式和扩散式,仪器主要由采样、检验、指示及报警4部分组成,当环境中的氨气扩散或抽吸到达传感器时,传感器将氨气浓度转化为电信号,再由显示器将浓度值显示出来.
Ammonia gas detection principle generally includes electrochemical sensors, optical sensors or semiconductor away from the sensor sampling mode is divided into suction pump and diffusion type instrument is mainly composed of sampling, inspection, indication and alarm of 4 parts, when the environment in ammonia diffusion or suction reaching the sensor, the sensor will be ammonia concentration into electrical signals by the display the concentration value is displayed.
目前国内尚无氨气报警器检验标准、规范、规程等,导致此类气体检测报警器的检定和校准工作因缺乏标准依据而难以正常开展,据调查,氨气报警器用量所占比例约为5%主要分布在石油、化工、啤酒等行业,随着氨气在制冷、化工等行业的使用日益增加,氨气报警器的用量呈逐年上升的趋势.
At present there is no domestic gas alarm inspection standards, codes and regulations, resulting in verification and calibration of such gas detection alarm due to the lack of standard basis and difficult to carry out normal, according to the survey, the amount of ammonia alarm proportion is about 5%, mainly in the petroleum chemical industry, beer and other industries, with the use of ammonia in the refrigeration and chemical industry increasing the amount of ammonia gas alarm is increasing year by year.