Sy-fid750 portable chromatograph
Function and purpose:
Sy-fid750 portable chromatograph can detect and analyze common gases in time, including C1-C6 gases such as oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, ethane, ethylene, acetylene, propane, butane, pentane, etc. it can measure the components in the container, flue and air.
2、 Principle introduction
Flame ion detector is highly sensitive but non selective in the measurement of total hydrocarbons. Its working principle is simple. One of them is the flame from the hydrogen atom with hydrogen molecules, forming carbon radicals and electrons. In the case of rapid recombination of charged parts, the existence of this condition is usually very short. However, in an electrostatic field, the component with opposite charge can drive to the electrode. This results in a flame proportional to the number of hydrocarbons present within the effective current.
Flame ion detector - Advantages
Quick response
No cross sensitivity - ionization in the flame is a selective hydrocarbon molecule, so there is no cross sensitivity for CO, CO2, SO2, NOx, NH3
The detection range of the detector is inherent linearity of the detector plus the detection principle, which means that the FID sensitivity of the fixed flow rate can be adjusted from low PPM to%, and the low or higher flow rate can be adjusted in special applications.
High accuracy
3、 Technical parameters
1. Minimum detection concentration (in μ L / L):
气体种类 | 浓度范围 | 最低检出限 | 优先权 |
氧 | 0%-21% | 0.10% | 1 |
氮 | 1%-100% | 0.10% | 2 |
一氧化碳 | 0.5ppm-10000ppm | 5ppm | 1 |
二氧化碳 | 0.01%-20% | 10ppm（上限可以不考虑） | 1 |
甲烷 | 0.01%-50% | 1ppm | 1 |
乙烷 | 0.01%-50% | 1ppm | 2 |
乙烯 | 0.01%-10% | 0.5ppm | 1 |
丙烷 | 0.01%-50% | 1ppm | 3 |
丁烷 | 0.01%-50% | 1ppm | 3 |
戊烷 | 0.01%-50% |
2. Qualitative repeatability: deviation ≤ 1%
3. Quantitative repeatability: deviation ≤ 3%
Technical index of detector:
热导检测器（TCD）（可选） | 氢火焰离子化检测器（FID） |
采用半扩散式结构 | 圆筒型收集极结构设计，石英喷嘴，响应极高 |
电源采用恒流控制方式 | 自动点火；稳定时间：十分钟 |
灵敏度：≥2500mV·ml／mg（正十六烷/异辛烷） | 检测限：≤8×10-12g／s（正十六烷/异辛烷） |
基线噪声：≤20μV | 基线噪声：≤2×10-13A |
基线漂移：≤100μV/30min | 基线漂移：≤2×10-12A/30min |
线 性：≥104 | 线性：≥106 |
8 ℃ ~ 399 ℃ at room temperature accuracy ± 0.1 ℃
Boundary dimension: 450 * 430 * 230mm
Weight: ≤ 15kg
3、 Principle and characteristics of portable analyzer
Composition of portable FID analyzer:
Sampling probe gun
According to different site conditions of customers, sampling probe guns of different sizes and functions can be configured. The probe guns can be equipped with functions of constant temperature heating, cyclone cooling, multi-stage filtration, etc
Portable FID analyzer box
FID chromatogram analyzer and pretreatment system are highly integrated in portable box, standard gas, generation gas, etc.
The pretreatment has the functions of extraction, filtration, water removal and steady flow, which can send the relatively pure gas to the chromatograph for analysis.
System features:
1. All the temperature parameters of sy-fid750 portable chromatograph can be displayed digitally, and the temperature of column box, detector, reformer and other channels can be read and controlled directly through the workstation. The operation is simple and clear.
2. Adopt computer reverse control technology to realize one key startup.
3. The sy-fid750 portable chromatograph is equipped with an automatic gas path control device. When you click the mouse, part of the air will be released automatically, so that the ratio of hydrogen and air can reach the proportion suitable for ignition, and the proportion will be restored after the ignition is completed automatically. Similarly, the thermal conduction bridge flow can be set through the bridge flow setting window in the workstation software.
4. Digital FID electronic zero adjustment technology to enhance the anti-interference ability of the instrument;
5. Built in mute air pump without external air source
6. Gas break protection function of thermal conducting tungsten wire.
Specifications:
Communication interface: RS232 / USB interface
High precision: 24 bit high precision A / D
Resolution: ± 1uv
Input level range: - 5mv to + 1V
Sampling frequency: up to 20 times / second
Dynamic range: 106
Integral sensitivity: 1 μ V · sec
Linearity: < 0.1%.
Reproducibility: 0.06%.
