隨著工業(yè)的發(fā)展,各種有毒有害氣體隨之出現(xiàn),氨氣氣體報(bào)警器在這種情況下也應(yīng)運(yùn)而生,它采用高精度的進(jìn)口傳感器作為檢測(cè)元件,當(dāng)報(bào)警器檢測(cè)到環(huán)境中氣體的濃度達(dá)到或超過(guò)預(yù)設(shè)的報(bào)警指時(shí),報(bào)警器通過(guò)屏蔽電纜線將信號(hào)傳到控制器,控制器立即發(fā)出聲光報(bào)警,同時(shí)啟動(dòng)排風(fēng)裝置或關(guān)閉電磁閥切斷氣源,徹底阻斷氣體的泄露.

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.

目前國(guó)內(nèi)氨氣報(bào)警器校準(zhǔn)存在很多問(wèn)題,氨氣報(bào)警器的檢驗(yàn)、檢定工作難以正常開展,多數(shù)企業(yè)的氨氣報(bào)警器疏于管理,無(wú)法保證其指示準(zhǔn)確和報(bào)警及時(shí),導(dǎo)致生產(chǎn)中存在一些安全和職業(yè)危害隱患,濟(jì)南瑞安電子有限公司分析其中主要原因有以下幾方面:

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)國(guó)內(nèi)尚未發(fā)布氨氣報(bào)警器檢驗(yàn)標(biāo)準(zhǔn)、規(guī)范、規(guī)程,對(duì)氨氣報(bào)警器的技術(shù)指標(biāo)缺乏具體規(guī)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)由于氨氣性質(zhì)活潑,標(biāo)準(zhǔn)氣體的提供商極少,難以及時(shí)買到標(biāo)準(zhǔn)氣體;

(2) because of the active ammonia nature and the few standard gas providers, it is difficult to buy standard gas in time.

(3)標(biāo)準(zhǔn)氣體的保存期限較短,一般不大于6個(gè)月,購(gòu)置鋼瓶裝的標(biāo)準(zhǔn)氣體給企業(yè)造成較大的經(jīng)濟(jì)負(fù)擔(dān).

(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.

氨氣檢測(cè)原理一般包括電化學(xué)傳感器,光學(xué)傳感器或半導(dǎo)體遠(yuǎn)離傳感器,采樣方式分為泵吸式和擴(kuò)散式,儀器主要由采樣、檢驗(yàn)、指示及報(bào)警4部分組成,當(dāng)環(huán)境中的氨氣擴(kuò)散或抽吸到達(dá)傳感器時(shí),傳感器將氨氣濃度轉(zhuǎn)化為電信號(hào),再由顯示器將濃度值顯示出來(lái).

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.

目前國(guó)內(nèi)尚無(wú)氨氣報(bào)警器檢驗(yàn)標(biāo)準(zhǔn)、規(guī)范、規(guī)程等,導(dǎo)致此類氣體檢測(cè)報(bào)警器的檢定和校準(zhǔn)工作因缺乏標(biāo)準(zhǔn)依據(jù)而難以正常開展,據(jù)調(diào)查,氨氣報(bào)警器用量所占比例約為5%主要分布在石油、化工、啤酒等行業(yè),隨著氨氣在制冷、化工等行業(yè)的使用日益增加,氨氣報(bào)警器的用量呈逐年上升的趨勢(shì).

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.