气体分析已应用于各种场所和用途,例如测量汽车排放和监控烟气排放。近年来,气体分析的用途进一步扩大,已经开始研究通过呼吸分析实现疾病的早期检测和诊断。滨松为光学气体测量提供广泛的光源和探测器。
P16112-011MA 是一款红外探测器,在高达 5 μm 的光谱带中具有高灵敏度。滨松独特的晶体生长技术和工艺技术实现了这种高灵敏度。与前照式型号 (P13243-011MA) 相比,使用背照式结构之后大大提高了灵敏度温度系数。
P16612-011CA 是一款红外探测器,在高达 5 μm 的光谱带中具有高灵敏度。滨松独特的晶体生长技术和工艺技术实现了这种高灵敏度。与前照式型号 (P13243-013CA) 相比,使用背照式结构之后大大提高了灵敏度温度系数。
由于每个气体分子都有自己的吸收波长,因此可以通过测量该波长处的吸光度来测量气体的浓度。特别是在红外区,由于气体分子的振动,气体特有的吸收波长较多,因此红外区被用于测量各种气体。
例如图中所示,光照射到气体,然后通过检测透射或反射的光来监控吸光度。通过在考虑目标气体及其周围环境的光吸收特性的情况下选择最佳装置,光学方法可以实现比其他气体测量方法更快的响应、更高的精度和更长的寿命。
光传感器的快速响应使其适用于实时气体监控。即使在较短的测量时间内,它也能对大量数据进行积分和平均,从而实现更高精度的测量。
光学气体检测受共存气体和水蒸气的影响较小,因为它检测每种气体的特定吸收波长;可通过光学气体测量进行高选择性检测。
使用光学测量进行非接触式检测有助于保持系统稳定,并减少传感器本身的劣化。此外,可以减少维护频率。
测量光合作用所需的 CO2 浓度。
工厂和其他工作现场的气体泄漏检测。
汽车废气中混合气体的浓度分析。
工厂等场所排放的混合气体的分析。
通过实时测量工业气体进行工艺控制。
工厂等场所排放的混合气体的分析。
实时监控汽车尾气。
分析大气中的污染物气体。
介绍二氧化碳 (CO2) 和甲烷 (CH4) 等各种气体的吸收波长,以及滨松气体测量装置的发射/吸收波长范围。
产品图片 | 产品名称 | 特点 | NDIR | FTIR | TDLAS | DOAS | |
---|---|---|---|---|---|---|---|
光源 | 中红外 LED |
・峰值发光波长:3.3 μm、3.9 μm、4.3 μm ・适用于测量 CO2、CH4 |
✓ | ||||
氙气闪光灯 |
・峰值输出极高 ・产生的热量低 ・连续光谱 |
✓ | ✓ | ||||
CW 量子级联激光器 |
・MIR 半导体激光器 ・制备分布反馈 (DFB) 结构 ・通过电流调制进行快速波长调谐 |
✓ | |||||
氙气灯 |
高稳定性 ・连续光谱 |
✓ | |||||
氘灯 |
高稳定性 ・使用寿命长 ・紫外波段的连续光谱 |
✓ | |||||
探测器 | InAsSb 光伏元件 |
・支持 5 μm 波段 ・提供适用于 CO 2、CH4 的带通滤波器 |
✓ | ||||
InAsSb 光伏元件 |
・支持 8 μm 和 10 μm 波段 ・提供非冷却型和电子冷却型 |
✓ | ✓ | ||||
II 类超晶格红外探测器 |
・支持 14 μm 波段 ・液氮冷却型 ・优异的线性度 |
✓ | |||||
带前置放大器的红外探测器模块 |
・支持 10 μm 波段 ・高速响应 ・提供非冷却型和电子冷却型 |
✓ | ✓ | ✓ |
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