By hvhipot 
The oil chromatography analyzer under HV Hipot Electric Co., Ltd. power can help many power workers conduct various power tests more conveniently.
After the gas chromatograph arrives at the testing site, how do the on-site personnel operate it? Next, we will introduce the quick installation of the gas chromatograph, which can improve the efficiency of on-site testing.
1. Open the packaging box, take out the chromatogram, and place it on the workbench. The appearance should be intact, and according to the contract, the goods and accessories should be complete.
2. Connect the gas circuit: TCD will only send H2 to the carrier gas inlet of the chromatograph. Convert FID/FPD/NPD to high-purity N2/H2/Air into the corresponding chromatograph injection port, do not connect it incorrectly. ECD only transfers 99.999% of N2 to the carrier gas inlet of the chromatograph. This instrument requires the output pressure of three types of gas series resonance pressure reducing valves: carrier gas (N2): 0.4mpa, hydrogen gas: 0.26mpa, air: 0.4mpa (regardless of the gas flow rate, the three pressures are fixed!)
3. Connect the chromatography column to the corresponding detector, carrier gas, and leak test. Install and open the workstation, connect the signal line to the corresponding controller. Check that the workstation and corresponding detectors are working properly.
4. Connect the ground wire. Start up – heating – should be normal; Set the unused temperature to “0” and set it to “off”. Set the parameters of the detector correctly. The initial state of all external events should be set to ‘closed’.
5. FID ignition; Add appropriate bridge current (not greater than 160mA) to TCD, press the bridge current button, and the bridge current light will turn on; FPD ignition – high voltage; NPD adds rubidium bead current until rubidium bead turns deep red; ECD with pulsed current (1nA).
6. View baseline – zero.
7. After the baseline is stable, sample analysis can be performed: adjust the column chamber temperature and pre column pressure appropriately to make the peak normal. Condition reference: The column chamber temperature is set near the boiling point of the sample to be analyzed, and the vaporization and detector temperatures are 20 ℃ -50 ℃ higher than the column chamber temperature. Lower column temperature, better separation, longer retention time; When the column temperature rises, the separation degree deteriorates and the retention time shortens. The pressure in front of the column decreases (the flow rate of the carrier gas decreases), resulting in better separation and longer retention time; When the pressure in front of the column increases (the flow rate of the carrier gas increases), the separation will deteriorate.
The above is a quick installation guide for gas chromatographs, hoping to help you improve on-site testing efficiency.