一氧化碳检测报警器检定浅析

一氧化碳检测报警器作为能测量空气中一氧化碳气体浓度,并做出相应声光报警的检测报警装置,现已广泛应用于各厂矿企业工作环境较为恶劣、易产生一氧化碳气体的场所中。一氧化碳是种不被人们嗅觉察觉到的有毒有害气体,因此一氧化碳检测报警器的重要性不言而喻。文章在一氧化碳检测报警器检定工作中实践中,总结梳理出几个需要注意的环节。     

谈谈一氧化碳气体检测报警器

为了确保一氧化碳气体报警器的正常运行,对其必须严格管理,实行强制检定。笔者通过长期的一氧化碳气体报警器的检定工作,现就一氧化碳检测报警器存在的问题及解决的办法提出建议。     

对JJG1093-2013《矿用一氧化碳检测报警器检定规程》的有关探讨

正JJG1093-2013《矿用一氧化碳检测报警器检定规程》(以下简称《规程》)是矿井下使用的电化学原理一氧化碳检测报警器的检定依据,笔者长期在一线从事一氧化碳检测报警器的检定工作,通过日常工作经验总结,对《规程》中的某些内容有不同的理解,在此与大家一起探讨。笔者按《规程》要求的检定方法对一氧化碳检测报警器进行检定,在检定过程中,遇到三点问题如下:问题1在《规程》之5.3.6.1中提到"……分别通入浓度值约为20μmol/mol……的一氧化碳气体标     

气体报警器检测准确性关键问题研究撤回

<正>目前对气体报警器进行检测,主要执行各类国家计量检定规程或校准规范,如JJG693-2011《可燃气体检测报警器检定规程》、JJG915-2008《一氧化碳气体检测报警器检定规程》、JJF1674-2017《苯气体检测报警器校准规范》等;虽然技术文件各不相同,但对气体报警器检测的项目基本相通,主要有示值误差、重复性、响应时间、漂移等。本文根据笔者单位大量气体报警器检定/校准工作经验,分析在实际检测过程中可能会影响检测准确性的若干问题,以期为检测人员的准确检测提供参考。     

基于机器视觉技术的气体检测报警器检定装置的研究

本文描述了将机器视觉技术应用于一氧化碳气体检测报警器检定装置的设计原理及研发重点;论述了该技术应用后对检定过程的技术提升,并通过该技术在一氧化碳气体检测报警器检定过程中有效应用的尝试,探索该技术在计量领域更广泛的应用。     

一氧化碳检测报警器示值误差测量结果的不确定度评定

一、概述1.测量依据JJG915-2008《一氧化碳检测报警器》检定规程。2.环境条件环境温度:(0～40)℃;相对湿度:≤85%。3.测量标准空气中一氧化碳气体标准物质(以下简称"标准气体"),其相对扩展不确定度为Urel=1.5%,k=2。4.被测对象一氧化碳检测报警器,最大允许示值误差     

“一氧化碳”的电化学式气体传感器的应用和探讨

有毒及易燃易爆气体报警器的周期性检定作为石油、化工等生产性企业安全防护的重要方面,报警器核心部件传感器的线性度、可靠性、检测结果的准确性就显得尤为重要.以一氧化碳有毒电化学式气体传感器为例,对传感器的工作原理及整体工作过程进行了详细分析;对每部分结构的作用进行了简要描述;性能参数指标分情况进行探论.最终对一氧化碳有毒电...     

浅析冶金企业气体报警器的期间核查方法

冶金企业在生产过程中会产生很多有毒有害气体,用于气体检测的报警器测量数据稳定和准确是安全生产的重要前提。本文阐述了一氧化碳报警器期间核查的必要性和方法,为冶金企业做好报警器期间核查提供参考。     

论几种常用气体报警器的检定方法

随着工业经济的快速发展,各种气体报警器的应用范围也越来越来广泛,文章以可燃气体报警器、一氧化碳气体报警器、硫化氢气体报警器为实例系统分析了几种常用气体报警器的检定方法。     

有关一氧化碳检测报警器检定的探讨

介绍一氧化碳检测报警器的工作原理、组成及分类,并总结工作经历,对JJG915—2008《一氧化碳检测报警器》检定规程有关问题提出个人意见,与同行探讨。     

基于光声原理的火灾复合气体探测技术

监测燃烧过程中产生的气体（主要是CO）来探测火灾逐渐成为火灾探测中的一个重要领域。各种现有的气体传感器灵敏度比较低，不利于火灾的早期报警,利用基于光声原理的复合气体探测技术来进行火灾探测，能极大地提高探测器的灵敏度。将CO和CO2的检测结合起来，可降低探测器的误报率，有利于提高早期报警。     

Effect of CO on the field emission properties of tetrapod zinc oxide cathode

Tetrapod zinc oxide (T-ZnO), being a kind of nano-material, has large specific surface area and surface binding energy, which will make it sensitive to the ambient gas condition. So the field emission properties will be influenced by the gas adsorption when being applied as the cathode materials of field emission devices. Carbon monoxide is the main residual gas in T-ZnO field emission devices. In this paper, carbon monoxide was introduced into a field emission device with T-ZnO emitters. The field emission currents of tetrapod ZnO were compared before and after exposure to CO.     

运用自组织竞争网络进行气体定性分析的研究

优选了分析H2,CO气体的半导体气体传感器组成阵列，建立了实时数据采集系统，并与自组织竞争网络模式识别技术相结合，以进行气体定性分析的研究；同时为了消除气体浓度变化对传感器阵列输出的影响，提高自组织网络的识别效果，运用三种不同的数据归一化算法对传感器阵列的输出响应进行了预处理, 并对各自对应的网络识别结果进行了分析与讨论。实验结果表明，采用相对算法可实现H2,CO气体的准确识别。     

Numerical Study of Solid Iron Carburization in a Carbon Monoxide Atmosphere

The diffusion step during the high temperature carburization of a spherical iron particle in a carbon monoxide atmosphere is mathematically modeled and numerically simulated in this work. The continuity equation is numerically solved using a forward finite-differences scheme, and a temperature range of 1,486-1,664 K is considered. An integration time during which the solid iron particle is not yet melted is assumed. The programming code was verified using experimental results previously reported by other authors. Radial carbon concentration is determined for several temperatures, and the average carbon concentration in the particle is obtained by numerical integration.     

Gas concentration monitoring system for small and medium sized coal mines based on gas sensing detection and single chip control

This paper is aimed at the actual conditions of disaster caused by gas in small and medium-sized coal mines. A new gas concentration monitoring system for coal mines is developed on the basis of gas-sensing detection and single-chip control. The monitoring system uses the tin oxide as the main material of N-type semiconductor gas sensors, because it has good sensitive characteristics for the flammable and explosive gas (such as methane, carbon monoxide). The QM-N5-semiconductor gas sensor is adopted to detect the output values of the resistance under the different gas concentrations. The system, designedly, takes the AT89C51 digital chip as the core of the circuit processing hardware structure to analyze and judge the input values of the resistance, and then achieve the control and alarm for going beyond the limit of gas concentration. The gas concentration monitoring system has many advantages including simple in structure, fast response time, stable performance and low cost. Thus, it can be widely used to monitor gas concentration and provide early warnings in small and medium-sized coal mines.     

Spectroscopic investigations on sorption and oxidation of carbon monoxide in transition metal ion-exchange zeolites A: Studies on cobalt,nickel and copper forms

Sorption and oxidation of carbon monoxide in Co-, Ni- and Cu-ion-exchanged zeolites A, have been studied applying ultraviolet-visible (u.v.-vis.) and infrared (i.r.) spectroscopy. Carbon monoxide sorption takes place in front of the cations, resulting in a change of the coordination sphere of the cation as can be observed in the u.v.-vis. spectra and an upscale frequency shift of the CO fundamental. The latter can be roughly correlated with the charge/radius ratio of the interacting cation. In contrast, carbon dioxide sorption in zeolites A also gives evidence for a location near cations, but results only in small unspecific frequency shifts. Room temperature oxidation of carbon monoxide to carbon dioxide was found in zeolite NiA. CoA requires at least 523 K and CuA is inactive even at higher temperatures, undergoing autoreduction upon pretreatment.     

氮气中一氧化碳、二氧化碳混合气体标准样品的研制

叙述气体报警仪标定和检测使用的氮气中一氧化碳、二氧化碳混合气体标准样品的制备,以气相色谱法对其均匀性和稳定性进行考核,确保其数据准确可靠。     

空气中一氧化碳、空气中二氧化碳气体标准样品的研制

叙述了气体报警仪标定和检测使用的空气中一氧化碳、空气中二氧化碳气体标准样品的制备,以气相色谱法对其均匀性和稳定性进行考核,确保其数据准确可靠。     

氮气中一氧化碳、二氧化碳、甲烷、乙烷气体标准样品的研制

叙述了气体报警仪标定和检测使用的氮气中一氧化碳、二氧化碳、甲烷、乙烷气体标准样品的制备,以气相色谱法对其均匀性和稳定性进行考核,确保其数据准确可靠。