德尔格氢氰酸检测管

德尔格氢氰酸检测管

德国德尔格Drager氢氰酸气体检测管别名氰化氢气体检测管，是一种具有苦杏仁特殊气味的无色液体。易溶于水、酒精和乙迷。易在空气中均匀弥散，在空气中可燃烧。氰化氢在空气中的含量达到5.6%~12.8%时，具有爆炸性。氰化氢为气体，其水溶液称HCN。HCN属于剧毒类。检测管及采样设备均具有国家计量器具型式批准证书。生产企业通过了ISO9001认证。

广泛应用：

医药科研、制药生产车间、烟草公司、环境监测、学校科研、楼宇建设、消防报警、污水处理、工业气体过程控制石油石化、化工厂、冶炼厂、钢铁厂、煤炭厂、热电厂、、锅炉房、垃圾处理厂、隧道施工、输油管道、加气站、地下燃气管道检修、室内空气质量检测、危险场所安全防护、航空航天、军用设备监测等。

?在空气中测定HCN，火灾中气体会释放出来并且耗尽。
?测量范围 ：2 到30 ppm
?泵吸次数（n）：1
?测量时间 ：大约1 分钟
?标准偏差 ：±10…15%
?颜色变化 ：微桔黄色到红色
?测量范围延伸：
           5 到75ppm, n=2, 读数乘以2，5
           10 到150ppm, n=1，读数乘以5

?周围的环境：
           温度 ：0 到30 摄氏度
           湿度 ：≤20mg/L(23 摄氏度相对湿度100%)
           大气压力 ：F=1013/大气压力（hPa）

?反应原理：

          a）HCN+Hgcl2→Hcl

          b）Hcl+methylred→red reaction product

氰化氢检测管特点和优势：

1、氰化氢检测管是用来测定氢氰酸气体在某一环境中所含浓度含量的简易检测装置。通过检测剂与被检测气体的反应而出现颜色变化、来表示所测环境中的气体含量浓度。具有操作简便、使用广泛、检测精确、实时性强和经济实惠的特点。

2、德尔格检测管是两端密封的玻璃管，在管中内装填了一定数量的检测剂，在玻璃管表面标有表示气体浓度的刻度线。

3、检测剂是德国德尔格公司专业研发人员经过科学配方研发生产的、计量和实验验证后所确定的反应指示剂附着在颗粒体表面。检测剂一旦和被检测气体反应，会出现鲜明且稳定的颜色变化层，通过该变色层与玻璃管上的刻度相对照，就可确定被检测气体的精确浓度含量了。

4、检测管不仅可用于室内空气检测、公共场所的空气质量监测、作业现场的空气及特定气体的测试、大气环境检测等许多方面，也被用于许多需要控制气体成分的生产工艺中。检测管是掌握和分析气体成分和浓度的有效、安全和简便的方法。

气体流向检测管CH25301操作说明和测量结果：
1、用开管器打开检测管的两端
2、将检测管紧紧地插入泵中。箭头标记指向泵。
3、用检测管吸取空气或气体样品
4、读取变色的整个长度
5、将结果乘以影响因素 F 修正大气压力的影响
6、操作后用空气冲洗泵
7、交叉灵敏度：
• 阅读100 ppm H2S, 300 ppmNH3, 200 ppm SO2, 50 ppm NO2 ,1000 ppm HCl和1000ppm腈无影响。
• H2S改变预制层到黑褐色。
• 超过300pm浓缩的氨水可能是读数脱色。
• 磷化氢存在时HCN无法测量。

Highlights/Features

Draeger Tubes used in testing for Cyanide 2/a Draeger Part # 6728791 Measuring Range: 2 - 15 mg/m (10 Tests per Box)

Draeger Tubes used in todays workplace provide quantitative results with a high degree of accuracy, repeatability and selectivity. The printed scale allows technicians to easily view the direct reading of the concentration. Calibration by the user is not necessary. The length-of-stain discoloration does not correspond to the concentration as a direct measure but is a measure of the mass reaction of the air contaminant.

Draeger Tube use is made according to the different areas of application & testing:

· Air investigation in the workplace

· Measurements in the range of the occupational exposure limits

· Technical gas analysis

· Emission concentrations

· Compressed air for breathing apparatus and compressed gases

Draeger tubes are designed for on-the-spot measurements at a particular location over a relatively short time period. Draeger Tube measurements may last from 10 seconds to 15 minutes or so depending on the particular Draeger Tube and Draeger Tube sampling pump. Some applications for short-term tubes are the evaluation of concentration fluctuations in the workplace, the measurement of contaminants in the workers' breathing zone, the investigation of confined spaces (e. g. grain silos, chemical tanks, sewers) prior to entry and to check for gas leaks in process pipelines.

The Draeger Tube measurement system consists of a Drager-Tube and a Drager gas detector tube pump. Each Draeger-Tube contains a very sensitive reagent system that produces accurate readings when the technical characteristic of the gas detector pump precisely match the reaction of the reagent system in the tube. The Draeger Tube Pump delivers the correct volume and must also pull the sample through the Draeger Tube at the proper rate. Basically, the pump and tube form a sampling unit. To interchange the pumps and tubes of various manufacturers can lead to erroneous results.

The evaluation of the indication on the Draeger Tube is another important factor to be taken into consideration. The following are guidelines for interpreting the indication:

· continuously observe the tube during the measurement

· evaluate the indication immediay following the measurement according to the instructions for use

· use sufficient lighting

· a lighter background

· compare with an unused tube

Observing the tube during the measurement is particularly important to make sure that a complete discoloration of the tube has not happened without being realised. This complete discoloration can sometimes occur abruptly with high concentrations even during the course of the first stroke. A sufficient lighting source is necessary. Direct sunlight should be avoided because the UV-radiation of the sun may cause a change in the discoloration. Since such a change can sometimes occur even after a longer period of time. The reading of the tube must be done immediay following the measurement. Please download our guideline sheet for more information.

Please note: The use of other types of pumps with Draeger Tubes is not recommended. Although the volume may be the same, the difference in the flow characteristics of the pump and tube can result in considerable measurement errors.

    德尔格检测管是装满化学试剂的玻璃管，此化学试剂与特定的化学物质或相关化学物质发生反应。用德尔格accuro气泵抽取定量标准气样到检测管中，如果检测管中的试剂改变颜色，颜色变化的长度通常表明被测物质的浓度。德尔格检测管系统是*气体检测领域*的、且应用zui广泛的检测形式。上海京工实业有限公司常年备库现货提供德国德尔格公司专业人员研发生产*的德国德尔格气体流向检测管Air Flow Tester。德尔格气体流向检测仪和气体检测管均通过欧盟认证。用户广泛称之为发烟笔，用途广泛，性价比好。

2016年上海京工在德国德尔格中国市场上销量*、服务*、受客户信誉*称号！我司销售的德尔格HCN气体检测管价格在中国市场上性价比是zui高的，广受客户青睐。咨询！

上海京工——2017年德尔格授权书