Main configuration of the instrument:
Thermal conductivity detector (TC-1H)+gas injection system+chromatographic column system, networked electronic control system, built-in workstation
1、 Technical parameters
1. Detector indicators
| Thermal conductivity detector (TCD) | |
| Sensitivity (detection limit) | ≥10000－12000mV.ml/mg（苯） |
| Baseline noise | ≤0.01mv |
| baseline drift | ≤0.1mv/30min |
| linear range | 105 |
2. Temperature control
Temperature range: 8 ℃ -400 ℃ above room temperature
Temperature control accuracy: ± 0.5%
Program order: 8 orders
Cheng Sheng rate: 0-39 ℃/min (adjustable increment of 0.1 ℃/min)
Program heating repeatability: ≤ 1%
3. Minimum detection concentration:
TCD：H2≤0.5ppm、O2≤1ppm、N2≤1ppm
FID：CO≤0.2ppm、CH4≤0.1ppm、CO2≤0.2ppm
2、 Instrument features:
A fully microcomputer control system, with one computer capable of controlling N (N ≤ 253) chromatographs, and equipped with a six channel temperature control system; Four channel time program system.
The chromatograph adopts a 10/100M Ethernet communication interface, which can realize remote control and remote data transmission processing and supervision of the instrument. Can be connected to unit supervisors and superiors for easy supervision by supervisors.
Digital signal output (built-in chromatography workstation), signal network cable directly output.
Large capacity column box with automatic rear opening door, capable of 8-step programmed heating; Near room temperature control function (8 ℃ above room temperature).
Equipped with fault self diagnosis function, displaying the location and nature of the fault at any time; Equipped with over temperature protection function, any temperature exceeding the set temperature will automatically stop
3、 Application spectrum
High purity ammonia analysis spectrum
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Serial number, retention time, name, concentration, peak area, peak height
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1 3.150 H2 (hydrogen) 298 1500100 53965
2 5.133 O2 (oxygen) 338 148137 5647
3 6.008 N2 (nitrogen) 292 108176 3996
4 9.927 CO (carbon monoxide) 285 496783 14225
5 13.428 CH4 (methane) 292 512858 9926
6 22.454 CO2 (carbon dioxide) 296 525637 7546
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Total 1801 3291691 95305
High purity argon TCD standard gas spectrum
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Serial number, retention time, name, concentration, peak area
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1 4.652 H2 2.40 3278
2 5.089 O2 4.50 1778
3 5.929 N2 5.00 1979
4 7.028 CH4 2.00 1206
5 8.533 H2 2.40 3380
6 8.963 O2 4.50 1829
7 9.790 N2 5.00 1943
8 10.869 CH4 2.00 1218
9 12.503 H2 2.40 3533
10 12.936 O2 4.50 2003
11 13.757 N2 5.00 1917
12 14.863 CH4 2.00 1142