GC-2020 gas chromatograph startup steps

Welcome to the installation and usage of GC-2020 gas chromatograph and ZKPAS-16T headspace sampler

1、 Instrument startup

1. Connect the nitrogen gas cylinder and the output gas pipeline of the air generator simultaneously to the gas chromatograph and headspace sampler

2. Turn on the hydrogen generator (pressure)0.3Mpa）The hydrogen flow rate is approximately30ml/minAir generator (pressure)0.3Mpa）

Open the nitrogen valve (pressure)0.3Mpa）

3. Check if there is pressure on the gas chromatograph pressure gauge and if the pressure is at the set position.

Column head pressure: 0.05 MPa(Turn off the pressure when using the automatic headspace sampler)

Supplemental gas pressure: 0.1 MPa Hydrogen pressure： 0.1 MPa air pressure： 0.1 MPa

4. Turn on the gas chromatograph switch, and the analysis condition is that the column box temperature is 60 ℃ injection1The temperature is 160 ℃ The detector degree is 160 ℃

5. Turn on the headspace sampler switch, and the analysis condition is that the sample temperature is 60 ℃ The valve temperature is 60 ℃ The pipeline temperature is 80 ℃

Pressurization pressure: 0.08 MPa Carrier gas pressure: 0.05 MPa

6. When using an automatic headspace sampler, insert the long headspace sampler pipeline into the gas chromatograph injection port, turn off the chromatograph pressure, and adjust the headspace carrier gas pressure. The pressure of the headspace sampler should be greater than the carrier gas pressure,

7. When the temperature reaches the set temperature, ignite and adjust the air pressure to0.03-0.05Ignite above the detector and check for water vapor, then adjust the air pressure back to its original position（0.1MPa）.

8. Open the computer, click to open the online workstation, and select the channelIClick OK---------Click on data collection-----------View baseline------------Zero point correction. Check if the baseline is normal [if it is a straight line],Prepare for injection after baseline stabilization

2、 Standard preparation process