NDCDY Gas Chromatography Purity Analyzer

Product Introduction

       A new type of gas chromatograph featuring a large Chinese LCD screen. This instrument incorporates advanced technologies from domestic and international counterparts, allowing parameter settings via a keyboard. It includes functions such as power-off protection, over-temperature protection, "0°C" protection, gas interruption protection, and electronic automatic ignition. It offers stable and reliable performance, a concise and rational structure, simple and convenient operation, strong expandability, and a unique column oven tracking heating function. It is equipped with dual hydrogen flame ionization detectors (FID), a thermal conductivity detector (TCD), and a methane conversion furnace.

Technical Parameters

☆、Normal Operating Conditions:

      Ambient Temperature: 0～30°C.

      Relative Humidity: Below 85％.

      No strong electromagnetic interference or corrosive gases in the surroundings.

      The workbench must be stable, without strong vibrations.

      Power Supply: AC 220V±10％，50Hz±0.5Hz.

      Power Consumption: Approximately 2KW.

☆、Technical Performance:

1、Temperature Control:

(1) Chromatographic Column Oven Temperature:

      Temperature Control Range: Room temperature +5°C～420°C (increment of 1°C).

      Temperature Control Accuracy: ±0.1°C.

      Deviation between indicated and set temperature not exceeding 0.2°C.

      Deviation between actual and indicated temperature not exceeding 2%.

      Heating Power: Up to 1500W.

      Temperature Sensor: PT100 corundum ceramic platinum resistor.

(2) Hydrogen Flame Detector Temperature:

      Temperature Control Accuracy: ±0.1°C.

      Temperature Control Range: Room temperature +5°C～420°C.

      Horizontal heating with two 100W internal stainless steel heating rods.

      Temperature Sensor: PT100 corundum ceramic platinum resistor.

(3) Thermal Conductivity Detector Temperature:

      Temperature Control Accuracy: ±0.1°C.

      Temperature Control Range: Room temperature +5°C～420°C.

      Vertical circular heating with two 100W internal stainless steel heating rods.

      Temperature Sensor: PT100 corundum ceramic platinum resistor.

(4) Conversion Furnace Temperature:

      Temperature Control Accuracy: ±0.1°C.

      Temperature Control Range: Room temperature +5°C～420°C.

      Horizontal heating with two 100W internal stainless steel heating rods.

      Temperature Sensor: PT100 corundum ceramic platinum resistor.

2、Thermal Conductivity Detector

     Sensitivity: S≥3000mv·ml/mg (benzene, H2).

     Noise: ≤0.02mv.

     Drift: ≤0.1mv/h.

      Built-in preamplifier.

      Semi-diffusion type, 100Ω four-arm rhenium-tungsten filament.

      Constant current power supply.

3、Hydrogen Flame Ionization Detector

      Detection Limit: M≤1×10⁻¹¹g/s (benzene/carbon disulfide).

      Noise: ≤5×10⁻¹³A.

      Drift: ≤5×10⁻¹²A/30min.

      Full collector type, corundum nozzle.

      Platinum ignition wire.

4、Instrument Dimensions and Weight

      Main Unit Dimensions: 610 (W) × 460 (H) × 470 (D) mm.

      Weight: Approximately 55kg.

☆、Optional Peripheral Equipment and Accessories:

       Recorder:

       Dedicated chromatographic data workstation (requires a microcomputer).

       Gas Sources:

       Nitrogen cylinder and regulator (nitrogen purity ≥99.99%); hydrogen cylinder and regulator (hydrogen purity ≥99.9%), or hydrogen generator; air cylinder and regulator (dry and oil-free), or air generator.