GC-9560-HGHigh purity oxygen analysis helium ion chromatographSuitable for high-purity oxygenH₂、Ar、N₂、 CH₄、 CO、CO₂Common impurities or C₁-C₄Waiting for hydrocarbonsFor the detection of trace impurities in gases, the instrument is equipped with a high-sensitivity helium ionization (PDIHID) detector, using center cutting and blowback technology, equipped with an injection switching valve with a blowback protection gas path and an imported helium purifier. Through non dead volume sampling or online injection methods, H in high-purity oxygen can be completed in one go₂、Ar、N₂、 CH₄、 CO、CO₂Common impurities and C₁-C₄The detection limit for hydrocarbons reaches ppb level, with a repeatability RSD of ≤ 1%.
The national standard GB/T 28726-2012 "Gas Analysis - Helium Ionization Gas Chromatography Method", which was mainly drafted by Hua Ai Chromatography, has been officially announced and implemented since February 1, 2013.

1、 Applicable standards:

• GB/T 14599-2008 "Pure Oxygen, High Purity Oxygen, and Ultra Pure Oxygen"
• GB/T 28125.1-2011 "Determination of Hazardous Substances in Air Separation Processes"
• GB/T 28726-2012 "Gas Analysis - Helium Ionization Gas Chromatography Method"

IIHigh purity oxygen analysis helium ion chromatographTechnical parameters:

1. Detection limit (ppb):

2. Temperature control indicators:

• Column box: 8 ℃ -400 ℃ at room temperature with an accuracy of ± 0.1 ℃
• Sample injector: Accuracy ± 0.1 ℃ at room temperature between 8 ℃ and 400 ℃
• Detector: Accuracy ± 0.1 ℃ at room temperature between 8 ℃ and 400 ℃
• Temperature control quantity: eight channels
• Program heating: 8th order
• Heating rate: 1 ℃~40 ℃
• Cooling rate: within 7 minutes (350 ℃ to 50 ℃)

3. Helium ionization detector (PDD):

• Discharge mode: Pulse discharge
• Baseline noise: ≤ 0.1mv
• Baseline drift: ≤ 0.5mv/30min
• Detection limit: ≤ 1.0 × 10-10g/ml

4. Carrier gas purifier:

• Purified gases: He, Ar, Ne, Kr, Xe, Rn
• Maximum operating pressure: 1000Psi
• Gas removal: H₂、 O2, N2, CO, CO2, CH4, H2O, NO, NH3, CF4, etc
• Residual concentration: ≤ 10pppb

5. Workstation performance:

• Communication interface: RS232/USB interface
• High precision: 24 bit high-precision A/D
• Resolution: ± 1UV
• Input voltage range: -5mv to+1v
• Sampling frequency: maximum 20 times/second
• Dynamic range: 106
• Integral sensitivity: 1 μ v • sec
• Linearity:<± 0.1%.
• Reproducibility: 0.06%.

6. Other parameters: size, weight, power supply:

• Dimensions: Width 655mm x Height 500mm x Depth 480mm
• Weight:~48kg
• Power supply: 220V ± 22V, 50Hz, power ≥ 2kW

3、 System configuration:

(1) GC-9560-HG high-purity oxygen analysis helium ion chromatograph (2) helium ionization detector (PDIHID)
(3) Central cutting system (4) multi column box system
(5) Helium Purifier (6) Standard Gas
(7) Chromatography Column (9) Oxygen Adsorption and Reduction System
(10) Special pressure reducing valve for carrier gas (11), no dead volume dedicated sampling valve
(12) GC-9560V4.0 Reverse Chromatography Workstation