Baseline 8900系列色谱仪在空气中测量硫化氢H2S和二硫化碳CS2的应用
本帖最后由 red 于 2019-4-16 00:23 编辑Hydrogen Sulfide & Carbon Disulfide in Air Application
Baseline 8900系列色谱仪在空气中测量硫化氢H2S和二硫化碳CS2的应用
The Series 8900 Hydrogen Sulfide and Carbon Disulfide Analyzer provides direct measurement of H2S and CS2 in ambient air. This instrument is utilized for continuous emission monitoring.
8900系列硫化氢和二硫化碳分析仪可直接测量环境空气中的H2S和CS2。，该仪器用于连续排放监测。
The Series 8900 H2S and CS2 Analyzer employs a Photoionization detector (PID) as the sensing element. A dual column configuration with timed backflush to vent is used to strip off moisture and heavier hydrocarbons. A pre-cut column is used in series with the analytical column. At sample injection a fixed volume of sample is carried to the pre-cut column. Backflush is timed so that only the H2S, CS2, and other similar components are eluted to the analytical column. Contaminants on the pre-cut column are backflushed to vent. H2S and CS2 are separated from potentially interfering components on the analytical column and elute to the detector for analysis. 8900系列H2S和CS2分析仪采用光电离检测器（PID）作为传感元件。 双柱配置具有定时反吹至排气口，用于去除水分和较重的碳氢化合物。 预切割柱与分析柱串联使用。 在样品注射时，将固定体积的样品运送到预切割柱。 反吹定时使得只有H2S，CS2和其他类似组分被洗脱到分析柱。 预切割柱上的污染物被反冲至排气口。 将H2S和CS2与分析柱上的潜在干扰组分分离并洗脱至检测器用于分析。
Analysis Time分析时间<180 seconds
Detector检测器PID
Column色谱柱Packed
Oven Temperature恒温箱温度40oC, Nominal
Carrier Gas载气Nitrogen, 13.5 cc/min, Nominal
Lower Detection Limit最低检测限20 ppb
Accuracy准确度1% of Full-scale
Precision精确2% of Measured Value
Span Drift (24HR)24小时漂移<2% of Full-scale
Sample Flow Rate样气流量250 - 500 cc/min, typical
Output输出
Digital: RS-232, optional Local Area NetworkAnalog: (1) 0-20ma or 4-20ma loop power supplied, isolated. Selectable for: gas concentration, unintegrated detector signal. Options for up to 20 additional programmable 0-20ma, 4-20ma or voltage outputs: 0-1V, 0-5V, or 0-10V.
Relays继电器(5) User programmable relays for concentration and diagnostic alarms (1A @ 30Vdc). Options for up to 32 additional relays available.
Inputs输入Optional digital input board for 3 contact closure inputs. Supports start analysis, start calibration, and analyze calibration gas sample.
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