日本NEMOTO催化燃烧式氢气传感器NC-180-H
催化燃烧式和半导体式气体传感器简介
催化燃烧式和半导体式气体传感器简介
催化燃烧式传感器是白金电阻表面制备耐高温催化剂层，一定温度下，可燃性气体其表面催化燃烧，燃烧是白金电阻温度升高，电阻变化，变化值是可燃性气体浓度函数。
催化燃烧式气体传感器选择性检测可燃性气体：凡是可以燃烧，都能够检测；凡是不能燃烧，传感器都没有任何响应。
当然，凡是可以燃烧，都能够检测这一句有很多例外，总来讲，上述选择性是成立。
催化燃烧式气体传感器计量准确，响应快速，寿命较长。
传感器输出与环境爆炸危险直接相关，安全检测领域是一类主导位传感器。
缺点：可燃性气体范围内，无选择性。
暗火工作，有引燃爆炸危险。
大部分元素有机蒸汽对传感器都有中毒作用。
目前这种传感器主要供应商中国、日本、英国（发明国）！目前中国是这种传感器最大用户，也拥有最佳传感器生产技术，尽管不断有各种各样代理商宣传上干扰社会对这种传感器认识，毕竟，催化燃烧式气体传感器主流制造商国内。
半导体式气体传感器是利用一些金属氧化物半导体材料，一定温度下，电导率环境气体成份变化而变化原理制造。
比如，酒精传感器，就是利用二氧化锡高温下遇到酒精气体时，电阻会急剧减小原理制备。
半导体式气体传感器可以有效用于：甲烷、乙烷、丙烷、丁烷、酒精、甲醛、一氧化碳、二氧化碳、乙烯、乙炔、氯乙烯、苯乙烯、丙烯酸等很多气体检测。
尤其是，这种传感器成本低廉，适宜于民用气体检测需求。
下列几种半导体式气体传感器是成功：甲烷（天然气、沼气）、酒精、一氧
化碳（城市煤气）、硫化氢、氨气（包括胺类，肼类）。
高质量传感器可以满足。
日本NEMOTO抗中毒可燃气体传感器NAP-57A(NEW)
Fig.8
Long term stability of relative sensitivity of methane
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
7. Temperature dependence
10 8 6 4 2 0 -2 -40 -4 -6 -8 -10
Zero offset drift (mV) (Drift from 25 degree C)
Max. -20 0 20 40 60 Min. 80
Relative humidity : Ambient temperature (degree C)
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
4. Detection range It can measure/detect whole combustible gases less than 100%LEL with +/-10% accuracy, however the excellent accuracy of linearity within +/-5% can be obtained less than 50%LEL. 5. Response and recovery time From clean air to 10%LEL
Nemoto NCP-180S-6S 可燃气体传感器 操作特性和使用手册说明书
Nemoto SensorEngineering Company LtdNemoto (Europe) B.V.Burgemeester Haspelslaan 531181NB AmstelveenThe NetherlandsTel +31 20 670 3858 Fax +31 20 670 2709www.nemoto.euncp-180s-6s-manual.docxIssue 2, Aug 2013Based on Original Document: Tech. Inf. No.NCP-180S-6S-130415NCP-180S-6S Explosive/Flammable Gas SensorOperating Characteristics and Handling ManualThe NCP-180S-6S is a new Catalytic (pellistor) type flammable gas sensor supplied as a matched pair of pellistor elements mounted on a single header and protected by a metal enclosure and can.The sensor detects and measures the presence of flammable gases and vapours in air, in the range 0-100%* of the Lower Explosive Limit (LEL) of the gas or vapour being measured. Designed for use in Fixed Gas Detection Systems, we believe the NCP-180S-6S offers an unparalleled combination of high performance and low-cost.The NCP-180S-6S exhibits excellent long term zero and sensitivity stability and a high level of resistance to catalytic poisons. The highly automated manufacturing procedure employed by Nemoto results in a repeatable reliable sensor which, unlike similar devices, requires no trimming resistor to enable the detector to be matched with a compensator.ContentsPrinciples of Operation (3)General Specifications (4)Outline Drawing and construction (5)Performance Measurements (6)Gas Sensitivity/Linearity (6)Temperature Dependence (7)Humidity Dependence (8)Relative Responses to Various Gases (9)Sensitivity Distribution (9)Poison Resistance (10)Exposure to Overrange Conditions (10)Shock and Vibration resistance (11)Storage and Operation in extreme Environmental Conditions (12)Notes on Sensor Testing (12)Nemoto Sensor Engineering Company Ltd168-0072 4-10-9, Takaido-higashi, Suginami-ku, TokyoNemoto & Co., Ltd. Sensor Div.TEL. 81-3-3333-7341FAX. 81-3-3333-7344E-mail *****************.jpURL http://www.nemoto.co.jp/Note that the Performance measurements expressed in this document should be considered astypical characteristics for guidance only, and not as specifications which are guaranteed, apartfrom those in the sections ”General Specifications” and “Dimensions” (Pages 4 and 5). It is theinstrument designer’s responsibility to ensure that the sensor is suitable for any given application.Nemoto has a policy of continuous development and improvement of its products. As such the specification for the device outlined in this document may bechanged without notice.Principles of Operation:Catalytic combustion has been the most widely used method of detecting flammable gases in Industry since the invention of the catalysed pelletized resistor (or "Pellistor") over 40 years ago.A Pellistor consists of a very fine coil of platinum wire, embedded within a ceramic pellet. On the surface of the pellet is a layer of a high surface area noble metal, which, when hot, acts as a catalyst to promote exothermic oxidation of flammable gases. In operation, the pellet and so the catalyst layer is heated by passing a current through theunderlying coil. In the presence of a flammable gas or vapour, the hot catalyst allows oxidation to occur in a similar chemical reaction to combustion. Just as in combustion, the reaction releases heat, which causes the temperature of the catalyst together with its underlying pellet and coil to rise. This rise in temperature results in a change in the electrical resistance of the coil, and it is this change in electrical resistance which constitutes the signal from the sensor.Pellistors are always manufactured in pairs, the active catalysed element being supplied with an electrically matched element which contains no catalyst and is treated to ensure no flammable gas will oxidise on its surface. This"compensator" element is used as a reference resistance to which the sensor's signal is compared, to remove the effects of environmental factors other than the presence of a flammable gas.ＤＣR1R2V R1Input (+)Input (G N D )Output (-)Output (+)Pellistor Drive/Measurement Circuit: A simple Wheatstone Bridgeto compare the resistance of two hot elementsThe advantage of using this technique when detecting flammable gases for safety purposes is that it measures flammability directly.Nemoto provides matched pair Pellistors conveniently mounted in a variety of enclosures for different applications. Some of these options contain the detector and compensator elements in separate enclosures (the NP range for Industrial applications). In the case of the NCP-180S-6S, both elements are contained within a plastic enclosure for ease of use and low cost.Catalytic pellistor type gas sensors have many advantages compared with semiconductor type gas sensors Linear output in proportion to gas concentrationGreater StabilityHigher reproducibilityGas specific - will only respond to flammable gasesUnaffected by humidityStable output for long periodsMore resistant to shocks and vibrations.General Specifications:Operating Specifications:Detected Gases Flammable Gases(Specifications are based on the detection of Methane/Natural Gas)Standard Concentration Range 0-100% LELRecommended Bridge Voltage 2.6V +/- 0.1VCurrent Consumption (at Recommended Bridge Voltage) 170mA +/- 20mABridge zero offset 0 +/- 30mVMinimum Output Sensitivity 20 mV for 1% CH4Linearity Effectively Linear to 100% LEL Response Time (Measured as T90) <10 secsAccuracy (Measured as Repeatability) ± 0.5mV for Zero± 1% LEL for Gas SensitivityLong Term Stability Drift Sensitivity:Zero:Less than 1% LEL / monthLess than +/- 0.5% LEL / monthExpected Lifetime in the field > 3 Years. Warranty Period 24 MonthsEnvironmental Specifications: Temperature Range -20°C to +60°C Standard constant Humidity Range 15 to 90%RH Standard Constant Pressure Range 1atm ± 10% Recommended storage Temperature Range 0 to 20 degree C Recommended Maximum Storage Time 6 monthsMechanical DataEnclosure Material Nickel Plated Brass Connector Pin Material NickelHeader (Base) Material Phenolic ResinDimensions and StructureDNEMOTO1CAll Dimensions in mmTolerances +/- 0.2mmPerformance MeasurementsThe NCP-180S-6S sensor is derived largely from the very popular NAP-56A sensor, the main difference being in the enclosure, which has been redesigned to attain similar performance characteristics to sensors mounted in twin T04 headers. The design brief for the NCP-180S-6S sensor was to achieve these characteristics whilst maintaining the cost benefits of single header design.The chief performance difference between the two sensors is that the signal output of the NAP-180S-6S sensor is very much lower than the NAP-56A, resulting in a wider usable range of 0-100%LEL and better linearity. To offset the lower sensitivity, steps have been taken to reduce noise effects.Gas sensitivity / LinearityThe graph below shows the typical sensitivity characteristics for methane. One can see that the sensor is not 100% linear (as with all pellistor gas sensors), but the deviation from linearity is very small and can be compensated for in software if required. More details on linearity can be supplied on request.0204060801001201400123456S e n s i t i v i t y (m V )Methane gas concentration (%)Temperature DependenceTypical Zero Offset Drift with TemperatureTypical Gas Sensitivity Drift with TemperatureHumidity DependenceTypical Zero Offset Drift with HumidityTypical Gas Sensitivity Drift with HumidityRelative Responses to various gasesBelow is a table of the NCP-180S-6S responses to various flammable gases. The table assumes the sensor is measuring on the 0-100% LEL scale, and also assumes that the response to methane = 100%.Please note that the LEL % figures used here are those in accepted use in Japan. If the LELs you are using in your territory are different to those in this table, you may need to adjust these Relative Responses accordinglyGas (Formula) LEL (%) Relative Response (%) MethaneCH45.0 100 Acetone (CH3)2CO 2.6 50 EthanolC2H5OH 3.3 40 Ethyl acetate C2H5COOH 2.2 50 Ethylene C2H4 2.7 80 Hydrogen H24.0 90 Iso-propanol CH3-C2H4COOH 2.2 30 MethanolCH3OH6.7 80 Methyl ethyl ketone CH3-CO-C2H5 1.9 40 N-butane C4H10 1.8 60 N-heptane C7H16 1.05 55 N-hexane C6H14 1.2 50 N-pentane C5H12 1.4 45 Propane C3H8 2.1 65 N-octane C8H18 0.95 40 TolueneC6H5CH3 1.2 30 Carbon monoxide CO 12.5 160 Unleaded petrolN/A1.250Sensitivity distributionThe below plot gives a distribution of sensitivities for 165 randomly selected sensors.20406080100-2020-2222-2424-2626-2828-3030-32n (p c s .)Gas sensitivity to 1% of methane (mV)Poison ResistanceHydrogen Sulphide (H2S)Sensors were exposed in 50%LEL Methane and 25ppm Hydrogen Sulphide for 1 hour. at normal temperature and humidity.No.Before test (mV)After test (mV)Zero offset Relative sensitivityto CH4ZerooffsetRelative sensitivitytoCH41 18.9100 20.01002 10.7100 11.8 963 7.5100 8.8 984 20.8100 22.5 985 -7.4100 -5.6 97 SiliconesSensors were exposed in 50%LEL of methane and 10ppm of HMDS (HexaMethylDoSiloxane) for 1 hour. at normal temperature and humidity.No.Before test (mV)After test (mV)Zero offset Relative sensitivityto CH4ZerooffsetRelative sensitivityto CH41 0.5100 1.8912 27.5100 27.8933-12.3100 -12.4944 1.9100 2.8925 3.7100 4.594 Exposure to overrange ConditionsSensors were exposed in 8% (160%LEL) methane at normal temperature and humidity for 1 hour.No. Before test (mV) After test (mV) Zero offset Relative sensitivity to CH4 Zero offset Relative sensitivity to CH41 25.2 100 27.0 1022 17.2 100 18.4 963 24.6 100 25.8 974 5.4 100 7.1 975 8.0 100 8.8 99ShockSensors were dropped from the height of 30cm onto the wood board of 3 cm thickness with free fall. The drop was repeated 3 times.No. Before test (mV) After test (mV)Zero offset Relative sensitivity to CH4 Zero offset Relative sensitivity to CH41 16.9 100 17.2 1002 -26.4 100 -26.7 1003 -11.3 100 -11.9 1004 4.5 100 5.1 995 17.1 100 17.1 101VibrationA vibration of 10Hz with 4mm amplitude in all 3 directions of X, Y and Z, was applied to the sensors for 20 minutes. No. Before test (mV) After test (mV)Zero offset Relative sensitivity to CH4 Zero offset Relative sensitivity to CH41 1.8 100 1.7 982 7.9 100 8.8 1023 7.2 100 8.0 1024 21.7 100 21.4 1005 19.6 100 18.8 102Storage in high temperature and humiditySensors were stored unpowered in 60 degree C, 90%RH for 1000 hours.No. Before test (mV) After test (mV) Zero offset Relative sensitivity to CH4 Zero offset Relative sensitivity to CH41 15.3 100 16.2 1002 11.1 100 12.3 973 17.2 100 18.5 954 -23.9 100 -23.8 995 -22.4 100 -22.4 99Operation in high temperature and humiditySensors were energized in 60 degree C, 90%RH for 1000 hours.No. Before test (mV)After test (mV)Zero offset Relative sensitivity to CH4Zero offset Relative sensitivity to CH41 2.7 100 2.5 992 1.1 100 1.7 963 6.5 100 8.6 964 -11.8 100 -10.5 100 5 6.8 1007.0 94Storage in low temperaturesSensors were stored at -20 degree C for 1000 hoursNo. Before test (mV)After test (mV)Zero offset Relative sensitivity to CH4 Zero offset Relative sensitivity to CH4 124.5 100 24.1 98 2 13.4 100 14.4 100 3 -29.6 100 -28.1 95 4 12.7 100 13.5 93 5 5.6 1006.2 98Notes on sensor testingAll Nemoto specifications are based on testing within a gas filled chamber. Testing the sensor using a flow-through system will yield similar, but not identical, results. The Nemoto test set up is illustrated below:The test chamber should be constructed of glass, or another material known not to absorb gases.FanD.C. voltage stabilizerVoltmeterGasdensitometerVentilatorGasIn Nemoto’s test regime, test gases are introduced into the chamber by injection, following careful calculation of the amount of gas required to generate the required concentration within the chamber. This may also be accomplished by purging the chamber using gas from a test gas cylinder, provided the flow rate used is not high enough to cause turbulence in the chamber.The gas inside the chamber should be gently agitated by a slow moving fan, to ensure that concentration gradients do not develop during testing, either by stratification layers forming in the chamber, or by the consumption of the gas by the sensors themselves.。
催化燃烧型mems气体传感器相关标准
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催化燃烧式传感器工作原理
催化燃烧式传感器工作原理专业解释·催化燃烧式可燃物在催化剂作用下燃烧。
与直接燃烧相比，催化燃烧温度较低，燃烧比较完全。
催化燃烧所用的催化剂为具有大比表面的贵金属和金属氧化物多组分物质。
例如家用负载Pd或稀土化合物的催化燃气灶，可减少尾气中CO含量，提高热效率。
负载0.2%pt的氧化铝催化剂，在500℃下，可将大多数有机化合物燃烧，脱臭净化到化学位移σ=1以下。
催化燃烧为无焰燃烧，因此适用于安全性要求高的场合，如以H2和O2为原料的燃料电池、用汽油或酒精为原料的怀炉(催化剂为浸P t石棉)等。
如消除化工厂NOx 的烟雾，可加燃料到烟雾中，通过负载型铂和钯催化剂，催化燃烧使N Ox转化为N2气。
采用适当的催化剂，使用有害气体中的可燃物质在较低的温度下分解、氧化的燃烧方法。
气体报警器的传感器采用催化燃烧的方式检测气体，称为催化燃烧式传感器。
检测可燃气体的仪器一般使用催化燃烧式传感器，它可以看成是一个小型化的热量计，它的检测原理在几十年内没有大的变化。
这是一个惠斯通电桥的结构。
在它的测量桥上涂有催化物质，它在整个的测量过程中是不被消耗的。
即使在空气中气体和蒸气浓度远远低于LEL时，它们也会在这个桥上发生催化燃烧反应，测量时，要在参比和测量电桥上施加电压使之加热从而发生催化反应，这个温度大约是500℃或者更高。
正常情况下，电桥是平衡的，V1 = V2，输出为零。
如果有可燃气体存在，它的氧化过程会使测量桥被加热，温度增加，而此时参比桥温度不变。
电路会测出它们之间的电阻变化，V2 > V1 ，输出的电压同待测气体的浓度成正比。
测量易燃易爆气体时氧气浓度是一个必须注意的问题。
催化式传感器要求至少8-10%的氧气才能进行准确测量。
催化燃烧气体传感器工作原理
催化燃烧气体传感器工作原理催化燃烧气体传感器工作原理简介催化燃烧气体传感器是一种常见的气体传感器，广泛应用于工业和生活中的气体检测与监控。
其工作原理基于催化剂催化燃烧的过程，能够检测到许多常见的可燃气体。
催化燃烧原理催化燃烧是指通过催化剂的作用，将可燃气体与空气中的氧气在一定温度下催化反应，释放大量的热能，并产生CO2和H2O。
这个过程是一个自持续的反应，只要有可燃气体存在，会不断释放热能。
传感器结构催化燃烧气体传感器由以下几部分组成： - 催化剂：通常由贵金属如铂、钯构成，能够促进气体的催化燃烧反应。
- 检测元件：一般为两个热电偶，一个被称为测量电偶，另一个被称为参比电偶。
它们通过连接到电路中，能够测量温度差异。
- 加热丝：位于催化剂附近，通过外部电源加热，使其达到催化燃烧的温度。
工作原理1.加热：当传感器启动时，加热丝开始加热。
加热丝的温度要高于催化燃烧的温度，以确保可燃气体能够被催化剂催化燃烧。
2.反应：当空气中有可燃气体进入传感器时，可燃气体与空气中的氧气在催化剂的作用下发生催化燃烧反应，产生热能。
3.温度差异：由于催化燃烧反应产生了热能，测量电偶和参比电偶之间会产生温度差异。
4.电信号：测量电偶和参比电偶的温度差异将转化为电信号，通过电路输出，供仪表或控制系统读取和处理。
检测原理通过测量电信号的大小，可以判断可燃气体浓度的高低。
在没有可燃气体存在时，由于没有反应产生的热能，测量电偶和参比电偶之间的温度差异很小，电信号较低。
而当可燃气体浓度增加时，催化燃烧反应产生的热能增加，温度差异增大，电信号也会相应增加。
优缺点•优点：催化燃烧气体传感器具有响应速度快、稳定性好、灵敏度高等优点。
适用于检测各种可燃气体。
•缺点：受到催化剂的寿命和稳定性的影响，需要定期更换催化剂，且对一些氧化性气体的检测不适用。
同时，由于催化燃烧产生的热能，传感器需要外部加热，需要一定的能源消耗。
应用领域催化燃烧气体传感器广泛应用于以下领域： - 工业领域：用于检测可燃气体的泄漏，确保工作环境的安全。
催化燃烧式气体传感器工作原理
催化燃烧式气体传感器工作原理催化燃烧式气体传感器，听起来是不是有点复杂？其实说白了，就是一种用来探测气体的神器。
想象一下，家里有个小助手，专门在那儿监测空气的变化，确保你生活得安全又舒适。
这个传感器最牛的地方在于它的工作原理，听我慢慢给你道来。
这种传感器内里有个催化剂，像是隐形的卫士。
它的工作原理其实就是借助这个催化剂，把空气中的某些气体变成无害的物质。
比如说，假设有点儿天然气泄漏，传感器可不会坐视不管。
它立刻就会发挥作用，将这些气体转化掉，保障你的安全。
你可以把它想象成一个会“变魔术”的小玩意儿，瞬间让危险化为乌有。
催化剂的作用就像是大厨在厨房里忙碌，抓紧每一个细节。
这些催化剂通常是贵金属，比如铂或钯，平时它们就静静地躺在传感器里，一旦有气体进来，它们就会激活。
这种反应就像是在派对上，大家都来劲儿了，气氛瞬间热烈起来。
催化剂可不是闹着玩的，它们能迅速提高反应速度，让气体在高温下分解，释放出热量，真是个“热心肠”的家伙。
为什么要加热呢？这就涉及到一个大问题：气体的燃烧。
我们都知道，燃烧是需要一定温度的，这个传感器就像是把气体放在火堆上，啪的一声就燃烧了。
温度一升高，催化剂开始狂欢，气体就被“吃掉”了，剩下的都是些安全无害的成分，简直就像变魔术一样，让你大吃一惊。
催化燃烧式气体传感器不仅仅局限于天然气。
它也能检测到很多其他的有害气体，像是一氧化碳、甲烷等等。
这些气体都是隐藏的危险，稍不留神就可能酿成大祸。
这个传感器的出现就像是给你装上了一双“火眼金睛”，让你随时随地掌握空气质量。
就算是你在厨房炒菜，油烟再怎么浓重，它也能迅速识别出是否有异常，真是贴心得不行。
此外，它的使用寿命也很长，这让人倍感安心。
一般来说，催化燃烧式气体传感器能持续工作多年，像个老朋友一样，时刻守护在你身边。
偶尔也得给它点关爱，定期检查一下，保持它的“年轻”状态。
只要定期维护，这位小助手就能继续陪伴你，守护你和家人的安全。
这种传感器的反应速度非常快，简直就像一只机灵的小狐狸，发现问题立马就通知你。
日本NEMOTO电化学硫化氢气体传感器NE-H2S(中文)
技术资料电气化学式硫化氢气体传感器NE-H2S系列(NE-H2S, NE-H2S-100, NE-H2S-200, NE-H2S-500) 工业用途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．ｃｏｍ1. 概述 Nemoto NE 系 列 传 感 器 是 用 于 工 业 用 途 的 传 感 器 .NE-H2S, NE-H2S-100, NE-H2S-200 和 NE-H2S-500 是 用 于 检 测 硫 化 氢 的 气 体 传 感 器 . 外 形 ， 脚 位 和 基 本 特 性 与 其 他 型 号 兼 容，尤其是 NE-H2S-100 在基本特性等方面的兼容度非常高。
另外，这些传感器与其他 传感器相比具有更好的稳定性，重复再现性，耐用性和可靠性，而价格具有竞争力。
特性和应用描述如下。
2. 检测原理 电化学式气体传感器由根据发生氧化反应的检知电极，与此同时发生还原反应的对向电极和用 来监视和平衡持续电压的参照电极组成。
下图是电化学式传感器NE-H2S的结构， 硫化氢气体通 过传感器的隔膜扩散进入工作电极，在工作电极端产生氧化。
因此反应产生的质子进入对向电 极，在电解液中与溶解氧发生反应变成水。
整个反应过程如上。
硫化氢气体浓度与通过连续反 应成产生的电流成比率关系。
3. 特性 快速反应 良好选择性和重复性 良好线性输出和稳定性 高可靠性和使用寿命 高温高湿环境下良好的耐用性 4. 检测气体 硫化氢 5. 用途 工业H2S气体浓度显示计 用于工业设备的H2S气体报警器 手持式H2S气体泄露检测仪 环境监测设备 6. 尺寸和外观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外壳材枓 壳体颜色 重量PPO 黄色 约5克 图1 NE-H2S的外观和尺寸 (其他H2S系列与上面相同)7. 额定值 1) 使用时周围温湿度 2) 贮存时推荐的周围温湿度 3) 使用时压力范围 4) 检测范围 型号 温度 : -20 - +50 攝氏度 湿度 : 15 – 90%RH 温度 : 0 – 20 攝氏度 湿度 : 15 – 90%RH 0.9 – 1.1 atm 检测范围 最大负荷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．ｃｏｍNE-H2S NE-H2S-100 NE-H2S-200 NE-H2S-500 5) 推荐的载荷电阻0 – 100ppm 0 – 100ppm 0 – 200ppm 0 – 500ppm500ppm 500ppm 1,000ppm 2,000ppm 10 ohm8. 规格参数 1) 输出信号(20 攝氏度时) NE-H2S NE-H2S-100(标准型号) NE-H2S-200 NE-H2S-500 2) 反应时间(T90) 3) 同一天的重复再现性 4) 年零点偏移值 NE-H2S, 100 和 200 NE-H2S-500 500 +/- 100nA/ppm.H2S 700 +/- 150nA/ppm.H2S 500 +/- 100nA/ppm.H2S 200 +/- 50nA/ppm.H2S 小于30秒. 小于+/- 2% 小于1ppm硫化氢 小于2ppm硫化氢 小于1ppm硫化氢 小于3ppm硫化氢 小于10%/年 24个月 小于6个月5) 零点偏移的温度依赖性 NE-H2S, 100 和 200 NE-H2S-500 6) 长期灵敏度衰减性 7) 保证寿命 8) 建议贮存时间 9. 电气特性 9-1. 典型气体灵敏度9-2. 交叉灵敏度图2 : NE-H2S系列的气体灵敏度 表格1 : NE-H2S系列的交叉灵敏度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检测气体 硫化氢 一氧化碳 二氧化碳 氢气 氯气 二氧化硫 氧化在氮 甲烷 氨气 二氧化氮 乙烯 *曝光时间 *相应灵敏度 (H2S是100的相应灵敏度) NE-H2S, NE-H2S-200 100 小于2 0 小于1 0 小于13 小于5 0 0 -20 约0 30 秒 NE-H2S-100 100 小于3 0 小于1 0 小于20 小于4 0 0 -30 约0 NE-H2S-500 100 小于5 0 小于2 0 小于23 小于3 0 0 -30 约09-3. 温度依赖性图3 : NE-H2S的的典型温度系数 (100 在20 攝氏度时)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．ｃｏｍTypical图4 : NE-H2S-100, NE-H2S-200的温度依赖性Typical图5 : NE-H2S-500的温度依赖性 9-4. 反应和回复特性图g.6 : NE-H2S的反应和回复特性 (20攝氏度时)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．ｃｏｍ9-6. 长期稳定性 常规环境下3年时间内都非常稳定.图7 : 常规环境NE-H2S的长期稳定性 10. 耐用性 NE-H2S在如高温高湿或高温干燥等严格环境下非常耐用. 特性描述如下. 10-1. 高温耐用性图8 : 高温干燥环境下的耐用性(80攝氏度) 10-2. 高温高湿耐用性图9 : 高温高湿环境下的耐用性(60攝氏度 90%RH)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．ｃｏｍ10-3. 低温耐用性图10 : 低温耐用性(-20攝氏度) 10-4. 热冲击实验 测试条件 传感器分別在零下-20攝氏度的环境下和50攝氏度的环境下贮存30分钟, 重复循环10次. 表格3. 热冲击实验 测试后(micro A)空气中零点漂移100ppm H2S的灵敏度测试前(micro A) No. 1 2 3 4 5空气中零点漂移灵敏度变化比率100ppm H2S的灵敏度(%) 100.0 99.8 99.8 99.6 100.20.01 0.01 0.01 0.01 0.0156.2 54.1 56.9 54.3 55.80.02 0.03 0.03 0.03 0.0256.2 54.0 56.8 54.1 55.910-5. 落地实验 测试条件 传感器从1米高处自由落体跌落至混凝土地板5次. 表格4. 落地实验 测试后(micro A)空气中零点漂移100ppm H2S的灵敏度测试前(micro A) No. 1 2 3空气中零点漂移灵敏度变化比率100ppm H2S的灵敏度(%) 100.2 99.8 100.40.03 0.03 0.0255.4 56.5 54.70.03 0.03 0.0455.5 56.4 54.910-6. 干扰气体下的暴露实验 A. SO2气体暴露实验 测试条件 常温常湿环境中在500ppm的二氧化硫下传感器暴露2小时。
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4)
5) 4. 1) 2) 3) 4) 5) 6) 7)
AC 1.6 +/- 0.1V(50－60Hz) DC 1.6 +/- 0.1V Current (when 1.6V is supplied) AC 135 +/- 15mA(50－60Hz) DC 135 +/- 15mA Ambient temperature and humidity in operation Temperature -20 - +60 degree C Humidity Less than 95%RH (without dew condensation) Ambient temperature and humidity in storage Temperature -30 - +70 degree C Humidity Less than 99%RH (without dew condensation) Detection range 0 – 100%LEL (Except acetylene) Specification Zero offset value in air 0 +/- 25mV (without trimming resistor) Minimum sensitivity 10mV/10%LEL of hydrogen Response time Less than 8 sec. at T90 Less than 3 sec. at T50 Linearity Effectively linear to 60%LEL Detection accuracy +/- 1%LEL Span drift Less than 1%LEL/month Zero offset drift Less than 0.5%LEL/month
10. Sensitivity distribution
Fig. 8 : Sensitivity distribution 11. Relative sensitivity (In case that sensitivity to hydrogen is 100.) Gas/Vapor Chemical formula LEL (%) Relative sensitivity Std. Hydrogen H2 4.0 100 1 Acetone (CH3)2CO 2.6 40 2 anol C2H5OH 3.3 35 3 Ethyl acetate C2H5COOH 2.2 10 4 Ethylene C2H4 2.7 65 5 Methane CH4 5.0 0 6 Iso-butane C4H10 1.8 0 7 Iso-propanol CH3-C2H4COOH 2.2 40 8 Methanol CH3OH 6.7 95 9 Methyl ethyl ketone CH3-CO-C2H5 1.9 40 10 N-butane C4H10 1.8 0 11 N-heptane C7H16 1.05 25 12 N-hexane C6H14 1.2 10 13 N-pentane C5H12 1.4 5 14 Propane C3H8 2.1 0 15 Toluene C6H5CH3 1.2 55 16 Ammonia NH3 15.0 115 17 Carbon monoxide CO 12.5 110 18 Unleaded petrol 1.2 15 Remarks) If other data are required, please contact us since sensitivity of many combustible gases except bad smell, dangerous, poisonous and high boiling temperature materials over 120 degree C are available for investigations.
Input(+)
Ｃ Ｄ
R1
Output(+) Output(-)
VR1 R2
Input(GND)
Fig. 2 : Recommended circuit diagram (R1, 2 : 200ohm, VR1 : 3Kohm)
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 Catalytic type gas sensor NC series were developed for industrial applications, and NC-180-H is a matched pair type gas sensor for hydrogen. Shape is the same as NC-180, however the supply voltage and current is different from it. Features and typical application are as follows. 2. Features and applications 1) Features ・Good stability ・Excellent repeatability and detection accuracy ・Good linearity against gas concentration ・Quick response ・Down-sizing for design flexibility of gas alarm or detector 2) Applications ・Fixed type gas alarm or detector for hydrogen gas ・Hydrogen gas densitometer 3. Ratings 1) Supply voltage to sensor 2) 3)
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
12. Evaluation method 1. Test equipment Outline of test equipment is as follows.
7. Gas sensitivity characteristics
Fig. 3 : Gas sensitivity characteristics 8. Temperature dependence at 60%RH
Fig. 4 : Temperature dependence of zero offset
Fig. 6 : Humidity dependence of zero offset (at 25 degree C)
Fig.7 : Humidity dependence of relative sensitivity to hydrogen
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
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) Warranty period 5. Appearance and dimension
Technical Information
（Catalytic Type Hydrogen Gas Sensor）
Model
ＮC－180-H
(Matched Pair 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
Gas
Fan
Ventilator
Gas densitometer D.C. voltage stabilizer Voltmeter
Remarks on equipments) A) Test chamber ・ Material of test chamber is to be inactive like metal, glass or acrylic resin which does not exhale and adsorb gases. ・ Volume of test chamber is to be more than 1 litter per 1pc. of sensor. B) Circumstance ・ Clean circumstance is recommended as evaluation area. Dirty circumstance which contains combustible gases like organic solvent vapor is to be avoided. C) Gas densitometer ・ Laser gas densitometer is recommended, but volume method is available simply. D) Agitation in test chamber ・ Air agitation in test chamber is to be conducted carefully in order not to flow air to sensor directly. Air velocity to sensor is to be less than 0.5m/sec. E) Power supply ・ Both of AC power and DC power are available for sensor, however DC power supply is recommended for accurate evaluation. F) Digital volt meter ・ Since the impedance of sensor is fairly low, general digital volt meter having over 100kohm as input impedance is sufficiently available. G) Ventilation ・ Ventilator with ventilation capacity of over 10 times/min. of the volume of test chamber is recommended for the convenient evaluation.