Sample Pressure Control for Multispecies Laser Based Gas Monitoring

气体监测在能源供应链的许多方面都至关重要。这些包括在提取过程中碳氢化合物的纯度测定、验证净化步骤、过程控制监测和排放研究。用于气体监测的激光仪器具有许多优点，如操作成本低、测量速度快、检测限低和抗交叉干扰。因此，基于激光的气体监测提供了一个可行的替代更常见的方法，如气相色谱法。对于使用基于激光的仪器的多物种监测，复杂和更高的成本往往需要多个激光仪器。通过降低样品测量单元内的压力，可以仅用单个激光器同时测量多种气体种类。这种功能的增加以及仪器复杂性和成本的降低预计将导致销售的增加和新的市场机会。目的是开发一种压力控制系统，该系统将集成到现有的气体监测仪器中，以降低和保持气体样品测量单元内的目标压力。

Gas monitoring is essential in many aspects of the energy supply chain. These include purity determination of hydrocarbons during extraction, verifying purification steps, monitoring for process control and the study of emissions.Laser based instruments used for gas monitoring have a number of benefits such as a low cost of operation, fast measurement rates, low detection limits and a resistance to cross interference. As a consequence, laser based gas monitoring provides a viable alternative to more common approaches, such as gas chromatography.For multispecies monitoring using laser based instruments, complex and higher cost multiple laser instruments are often required. By reducing the pressure within the sample measurement cell it is possible to simultaneously measure multiple gas species with only a single laser. This increase in functionality with a reduction in the complexity and cost of the instrument is expected to result in increased sales and new market opportunities.The aim is to develop a pressure control system which will integrate into existing gas monitoring instrumentation to reduce and maintain a target pressure within the gas sample measurement cell.