民用便宜的硫化氢气体传感器NE-H2S-P

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上传时间：2015-04-26
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民用便宜的硫化氢气体传感器NE-H2S-P

深国安电子另有不同量程和信号输出的气体检测模块、气体探测器、气体检测模组和气体检测仪有售。免费技术咨询,免费出解决方案。深国安电子-气体检测一站式方案解决者

Electrochemical Hydrogen Sulfide Gas Sensor

(Flat/Plane Type)

For Industrial Application

深圳市深国安电子科技有限公司

地址：广东省深圳市龙华新区牛栏前大厦Ｃ５０７　　　蒋小姐：１３４　２８７６　２６３１　　　　　　　电话：８６　７５５－８５２５８９００网址：ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ　　ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ．ｃｎ　　ｗｗｗ．ｓｈｅｎｇｕｏａｎ．ｃｏｍ

1. General

Nemoto NE series sensors were developed for industrial applications, and NE-H2S-P is a flat/plane type hydrogen sulfide gas sensor. Shape and pin positions are quite different from others, however the stability, repeatability, durability and reliability are superior to others like NE-H2S, but the price is competitive with others. Features and applications are as follows.

2. Detection principle

Electrochemical sensor consists of working electrode on which oxidization takes place, counter electrode on which reduction takes place, and reference electrode which can monitor and keep the voltage at constant. Structure of electrochemical sensor is shown in the following figure, hydrogen sulfide gas diffuses through membrane into working electrode, and is oxidized at working electrode. Consequently generated proton at this reaction proceeds to counter electrode, and reacts with dissolved oxygen in electrolyte to water. Total reaction is in the below described. Hydrogen sulfide gas concentrations is proportional to the current that is generated by this serial reaction.

3. Features

?Quick response

?Excellent selectivity

?Good linearity and stability

?High reliability

? Excellent durability against high temperature and humidity

4. Detected gas

Hydrogen sulfide

5. Application

?H2S gas densitometer for industrial application

?H2S gas alarm for industrial equipment

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Handheld type H2S gas leakage checker

深圳市深国安电子科技有限公司地址：广东省深圳市龙华新区牛栏前大厦Ｃ５０７　　　蒋小姐：１３４　２８７６　２６３１　　　　　　　电话：８６　７５５－８５２５８９００网址：ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ　　ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ．ｃｎ　　ｗｗｗ．ｓｈｅｎｇｕｏａｎ．ｃｏｍ

6. Dimensions and appearance

Case Material

Cap Color

Weight PPO Yellow (Pre-filter : wine-red) 2.4 g (approx.

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)

Fig.1 Appearance and dimensions of NE-H2S-P

7. Ratings

1) Ambient temperature and Temperature : -20 - +50 degree C humidity in operation Humidity : 15 – 90%RH 2) Recommended ambient temperature Temperature : 0 – 20 degree C and humidity in storage Humidity : 15 – 90%RH 3) Operating pressure range 0.9 – 1.1 atm

4) Detection range 0 – 100ppm

5) Maximum overload 500ppm 6) Recommended load resistor 10 ohm

深圳市深国安电子科技有限公司地址：广东省深圳市龙华新区牛栏前大厦Ｃ５０７　　　

蒋小姐：１３４　２８７６　２６３１　　　　　　　电话：８６　７５５－８５２５８９００网址：ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ　　ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ．ｃｎ　　ｗｗｗ．ｓｈｅｎｇｕｏａｎ．ｃｏｍ

8. Specifications 1) Output signal 120 +/- 20nA/ppm of hydrogen sulfide (at 20 degree C) 2) Response time (T90) Less than 30sec. 3) Repeatability in the same day Less than +/- 2% 4) Annual zero offset drift Less than 1ppm of hydrogen sulfide 5) Zero offset temperature dependence Less than 2ppm of hydrogen sulfide 6) Sensitivity reduction in long term Less than 10%/year 7) Lifetime warranty 24 months 8) Recommended storage time Less than 6 months

9. Electrical properties

9-1. Typical Gas

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Sensitivity

Fig.2 : Gas Sensitivity of NE-H2S-P

深圳市深国安电子科技有限公司地址：广东省深圳市龙华新区牛栏前大厦Ｃ５０７　　　

9-2. Cross Sensitivity

Table 1 : Cross Sensitivity of NE-H2S-P

Detected gases Relative sensitivity (Sensitivity to H2S is 100.)

*Exposure time : 30min.

9-3. Temperature dependence Hydrogen sulfide 100 Carbon monoxide Less than 3 Carbon dioxide 0 Hydrogen Less than 1 Chlorine 0 Sulfur-dioxide Less than 23 Nitric oxide Less than 20 Methane 0 Ammonia 0 Nitrogen dioxide -20 – 0

Fig. 3 : Temperature dependence of NE-H2S-P

(100 at 20 degree C) Remarks)

Long term stability, response characteristics, other basic features and many variations of durability are to be referred to the NE-H2S series technical information since they are almost the same as NE-H2S series. 深圳市深国安电子科技有限公司地址：广东省深圳市龙华新区牛栏前大厦Ｃ５０７　　　