Gasera’s PA201 custom gas cell is designed for laboratory measurements and it can be easily tailored for different types of light sources such as the near infrared distributed feedback laser (DFB), the quantum cascade laser (QCL) and the optical parametric oscillator (OPO).Gasera 的 PA201 定制气体电池是专为实验室测量, 它可以很容易地为不同类型的光源, 如近红外分布反馈激光器 (DFB), 量子级联激光器 (QCL) 和光学参数振荡器 (OPO)。
Laser photoacoustic spectroscopy (LPAS) is highly attractive method for trace gas analysis due to the high sensitivity, linearity, and low sample gas volume. Tunable laser sources provide high selectivity and high measurement accuracy due to the zero background nature of the measurement principle. 激光光声光谱 (LPAS) 是高灵敏度、线性度和低样本气量的微量气体分析的极具吸引力的方法。由于测量原理的零背景特性, 可调谐激光源提供高选择性和高测量精度。
- Gas cell, stabilized to 50 Celsius temperature 气体电池, 稳定到50摄氏度温度
- Measurement pressure: between 300 mbar – 1000 mbar. 测量压力: 介于300毫巴-1000 毫巴之间。
- Patented ultra-sensitive optical microphone based on a MEMS cantilever sensor coupled with a laser interferometer to measure microscopic movement of the cantilever sensor基于 MEMS 悬臂传感器耦合激光干涉仪测量悬臂传感器显微移动的专利超敏光学麦克风
- Specialised cell design for vibrational noise attenuation振动噪声衰减的专用单元设计
- Low gas volume (total gas volume of the system is approx. 30 ml) 气体体积低 (系统总气量约为30毫升)
- Real-time DSP (digital signal processing) unit for providing an analog and digital output signal proportional to the cantilever movement. Analog signal is connected with BNC output connectors and digital signal uses USB. 实时 DSP (数字信号处理) 单元, 提供模拟和数字输出信号成正比的悬臂运动。模拟信号与 BNC 输出连接器连接, 数字信号使用 USB。
- Measurement software for data aquisition via USB 基于 USB 的数据采集测量软件
- Three gas connections. The sample gas has two connections, one for input and one for output. The input is equipped with a particle filter. 三气体连接。样品气体有两个连接, 一个用于输入, 一个用于输出。输入配有微粒过滤器。
- Nitrogen purge for measurement compartment 测量隔间的氮气净化
- The gas exchange procedure is user configurable by a simple user interface with display and buttons. The gas exchange can be started manually with a press of a button or the controller can be programmed to do it automatically using timer or an external trigger. 气体交换过程是用户可配置的一个简单的用户界面与显示和按钮。气体交换可以手动启动, 按下按钮或控制器可以编程, 以自动使用定时器或外部触发器。
- Documentation on the measurement principle and the DSP module 测量原理与 DSP 模块的文献资料
- Documented instructions on how to use the PA gas cell and the DSP unit 关于如何使用 PA 气体电池和 DSP 单元的文件说明
- Detection limit: Gas and light source dependent. Typically in the ppb -region with NIR diode lasers and ppt-region with MIR quantum cascade lasers. 检测极限: 气体和光源依赖。典型地在 ppb 区域以近红外二极管激光器和 ppt 区域与和平号量子级联激光器。
- Optical path length: 100 mm at optical axis 光路长度: 100 毫米在光学轴上
- Repeatability: < 1 % of measured value in operational conditions at the calibration concentration (light source dependent) 重复性: 1% 测量值在操作的情况在定标集中 (光源依赖)主要应用：边界安全