懒虫工控（旧）

标题: 气相色谱仪资料 [打印本页]

作者: 学习自控仪表 时间: 2016-11-7 17:05
标题: 气相色谱仪资料
这个是横河气相色谱仪中的一段话：
The process gas chromatograph consists of a sampling mechanism, a column and a detector.
Sampling is carried out by switching a sampling valve. When separating components or detecting concentrations, the sampling valve is set to allow the gas (liquid) to be measured to flow through the sample column. When sampling, the sampling valve leads the gas (liquid) to be measured to a column on a carrier gas. (See Figure1.1)
There are two important points regarding sampling: a regular volume is sampled since repeated sampling is required; and samples are taken quickly and securely. The volume is fixed by measuring a specific gas (liquid) of controlled temperature and pressure using a sample measurement tube. Samples are taken quickly and securely by ensuring that the gas to be measured always flows without interrupt.

ps：大家来看看，怎么翻译呢

作者: 舞长安 时间: 2016-11-7 19:04
The process gas chromatograph consists of a sampling mechanism, a column and a detector.
过程气相色谱仪由取样机构，柱和检测器组成。
Sampling is carried out by switching a sampling valve. When separating components or detecting concentrations, the sampling valve is set to allow the gas (liquid) to be measured to flow through the sample column. When sampling, the sampling valve leads the gas (liquid) to be measured to a column on a carrier gas. (See Figure1.1)
通过切换采样阀进行采样。当分离组分或检测浓度时，设置采样阀以允许测量气体（液体）流过样品柱。当采样时，采样阀将待测量的气体（液体）引导到载气上的柱。（见图1.1）
There are two important points regarding sampling: a regular volume is sampled since repeated sampling is required; and samples are taken quickly and securely. The volume is fixed by measuring a specific gas (liquid) of controlled temperature and pressure using a sample measurement tube. Samples are taken quickly and securely by ensuring that the gas to be measured always flows without interrupt.
关于采样有两个重要的点：定期体积被采样，因为需要重复采样; 并快速和安全地取样。通过使用样品测量管测量受控温度和压力的特定气体（液体）来固定体积。通过确保待测量的气体总是不中断地流动，快速且安全地取样。

作者: gubai0348 时间: 2016-11-7 20:04
这是舞长安的翻译，我只是对其中几个按自己的理解进行下修正
1、过程气相色谱仪由取样机构，柱和检测器组成。
2、通过切换（开关）采样阀进行采样。当分离组分或检测浓度时，设置（开启）采样阀以允许待测量气体（液体）流过样品柱。当采样时，采样阀将待测量的气体（液体）引导到载气上的柱。（见图1.1）

3、关于采样有两个重要的点（要注意）：定期体积被采样，因为需要重复采样（因为需要重复采样，请取相同体积）; 并快速和安全(准确）地取样。通过使用样品测量管测量温度和压力受控的（确定组分的）气体（液体）来固定体积。通过确保待测量的气体总是不中断地(持续）流动，（来实现取样）快速且安全(准确）地取样。

整理后为

1、过程气相色谱仪由取样机构，柱和检测器组成。
2、通过开关采样阀进行采样。当分离组分或检测浓度时，开启采样阀以允许待测量气体（液体）流过样品柱。采样时，采样阀通过载气将待测气体（液体）引导到柱上。（见图1.1）
3、关于采样有两点要注意：因为需要重复采样，需取相同体积; 快速和准确地取样。通过控制温度和压力使确定组分的气体（液体）流过样品测量管来保证采样体积不变。通过确保待测量的气体持续流动，来实现取样快速准确。

气相色谱仪的样品分析机构由采样机构、色谱柱和检测器三部分组成。
待分析的样品用采样阀进行采集，采样阀有采样和分离及检测两种工作状态。在分离及检测状态时，取样阀应能让需要测量的气体(液体)流过采样阀的定量管。采样状态时，载气将采样阀定量管中需测量的气体(液体)样品带入色谱柱中(见下图)。
关于采样有两点需注意：因为需要重复采样，所以采样的体积应固定不变。此外，采样必须迅速可靠。实际测量中，使用—根温度和压力固定且定体积的的样品定量管来保证采集的某一气体(液体)的体积不变。使采样迅速而可靠的方法是待测量的气体始终不停地流通。

欢迎光临懒虫工控（旧） (http://old.lanchonggk.com/)