Gas chromatograph test has a certain test premise, let's look at the basic operation requirements of the gas chromatograph.
1, power supply requirements: voltage: 220±10%
Frequency: 50 + / - 0.5 Hz
Power: 3000 w or higher
Grounding resistance: <0.1 ohms
2, air source requirements: nitrogen: 99.995%
Hydrogen: 99.995%
Air: dry without oil
Hydrogen flame ionization detector (FID) basic operating requirements
Carrier gas: flow 50mL /min(30-80 mL /min)
Hydrogen: flow rate 30mL /min(25-40 mL /min)
Air: flow rate 350 mL /min(250 -- 500 ml/min)
4. Basic operation requirements of TCD
Before the heating, the carrier gas should be heated for 30min at the flow rate of 50ml/min
And the deviation of the flow rate at the two outlets is less than 1%
The value of bridge flow is set according to the analysis requirement
And the bridge flow relative to hydrogen gas decreases when nitrogen is used as carrier gas
5, electron capture detector (ECD) air source nitrogen: 99.999%
And install deoxygenation tube, before starting the machine should be carried for 2 hours, flow 80ml/min, and then start heating
6, special tips: first carry gas, and then turn on the heating!
The above is the basic operation requirements of the gas chromatograph, I hope to help you better use the instrument to test the test.
Wuhan Xinshengneng Technology Co., Ltd. is a professional SF6 oil testing equipment manufacturer, not only produces all kinds of power testing equipment, but also professional technical team to provide all kinds of test technical services, more products more models to choose from, welcome to call 0312-3188565 details!