1、 Temperature control:
Temperature control range:
1. Column box -8 ℃ to 400 ℃ above room temperature;
2. Vaporization chamber, detector - above room temperature 20 ℃~380 ℃;
3. Switching valve - above room temperature 20 ℃~160 ℃;
4. Temperature stability of 70 ℃ column box: ＜ 0.5％；
5. Temperature display accuracy: 0.1 ℃;
6. Column box program heating: 8 stages, rate 0-30 ℃/min (minimum increment 0.1 ℃/min);
7. Column box program heating (50 ℃ -10 ℃/min -250 ℃) repeatability: ≤ 1％；
8. Cooling rate of column box: ≤ 9 minutes (ambient temperature<27 ℃, vaporization temperature: 160 ℃, detection temperature: 180 ℃, column box temperature drops from 105 ℃ to 35 ℃).
2、 Detection sensitivity:
1. FID detection limit Mt ≤ 5 × 10-12g/s
2. 1 µ l of nC16/iso octane standard solution with a concentration of 144.4ng/µ l, the peak area of nC16 after injection should be ≥ 26000 µ V.s
3、 FID baseline stability:
(1) Specialized filling column, 135 ℃ constant temperature;
Baseline noise<10 × 10-14A
Baseline drift<6 × 10-13A/30min
(2) Specialized capillary column, programmed heating from 35 ℃ to 105 ℃, FID high resistance 1010 Ω;
Baseline noise<50 µ V
Baseline drift<1000 µ mV/30min
Startup time: 1 hour (from startup to sample analysis).
