Product Overview
The hydrogen generator produces hydrogen by electrolysis of a potassium hydroxide aqueous solution. Equipped with a variety of intelligent control systems, the instrument is safe and convenient to use, and is compatible with various models of chromatographs both domestically and internationally. The silent, oil-free air pump features stable output pressure, low noise, and strong purification capabilities, making it an ideal air source to replace high-pressure air cylinders. This product not only meets the requirements of various domestic and imported chromatographs and analytical laboratories but can also serve as an air source for high-purity nitrogen generators. It accurately detects seven characteristic gases-H₂, CH₄, C₂H₆, C₂H₄, C₂H₂, CO, and CO₂-as well as total hydrocarbon content dissolved in the insulating oil of power equipment such as transformers, reactors, current transformers, and oil-filled bushings; It uses oil chromatography data to identify latent faults within equipment, such as overheating, arc discharge, and partial discharge; it complies with GB/T 17623 (Oil Chromatography Determination Method).
Products Parameters
- Network Control System Internal CAN architecture; utilizes an interface board design that can be easily converted to Ethernet output
- Signal Bit Depth 24-bit
- Communication Interface Ethernet output (Connected via Category 6 Ethernet cable)
- Circuit Design ARM embedded design, facilitating wireless control, remote control, and mobile app control
- Temperature Control System Six independent temperature control channels
- Temperature Control Range Ambient temperature to -450°C; with liquid nitrogen cooling: -80°C to 450°C
- Column Oven Temperature Control Accuracy ±0.02°C
- Programmed Temperature Ramp 36 steps, 0.1°C per step
- Display Module Large LCD display
- Display Accuracy 0.01°C
- Column Oven Ramp Rate 0–80°C/min (adjustable in 0.1°C/min increments), up to 120°C/min
- Programmed Temperature Ramp Repeatability ≤1%
- TCD Detector Sensitivity: S-value ≥ 10,000 mV·ml/mg (benzene), up to 12,000 mV·ml/mg (benzene)
- Baseline Noise: ≤ 8 μV
- Baseline Drift: ≤ 20 μV/30 min
- FID Detector Detection Limit: ≤ 3 × 10⁻¹² g/s (hexadecane)
- Baseline noise ≤ 2×10⁻¹³ A
- Baseline drift ≤ 5×10⁻¹³ A
- ECD detector detection limit ≤ 3×10⁻¹⁴ g/s (R-666)
- Baseline noise ≤ 1×10⁻¹³ A
- Baseline drift ≤ 5×10⁻¹³ A
- FPD detector detection limit ≤ 2 × 10^(−11) g/s (sulfur in methyl parathion)
- Baseline noise ≤ 2 × 10^(−13) A
- Baseline drift ≤ 4 × 10^(−13) A
- Expansion Up to 6 external events can be added
- Automation Can be enhanced with: automatic ignition, automatic sampler connection, and four-channel flow/pressure display; remote control can be implemented using an optional remote control workstation
product details
Figure 1. Schematic diagram of the TCD detector structure
1 Housing Cover 2 Top Cover 3 TCD Housing 4 TCD Detector
5 Heat Conductor 6 Base 7 Screw 8 Clamping Plate
9 Platinum Resistance 10 Heating Wire 11 Nut 12 Asbestos Gasket
13 Glass Beads 14 Nut 15 Washer 16 Tungsten Wire 17 Insulation Wool
System Leak Detection
After the external gas lines have been installed, a leak detection test must be performed to prevent accidents. Follow these steps to conduct the leak detection:
(1) Close the carrier gas flow control valve, hydrogen valve, and air needle valve on the main unit;
(2) Release the low-pressure adjustment knob on the cylinder, open the cylinder's high-pressure valve, and then slowly adjust the low-pressure adjustment knob until the low-pressure gauge reads 3 kg/cm²;
(3) Close the cylinder high-pressure valve. At this point, the reading on the low-pressure gauge connected to the pressure reducer should not drop. If it does, there is a leak in the external gas line; carefully inspect the system and eliminate the leak.
1. Preparations
1.1 Open the main pressure valve on the nitrogen cylinder and check that the pressure readings on the main pressure gauge and the branch pressure gauge are normal.
Figure 1: Cylinder gas equipped with a pressure-reducing valve
1. Main pressure valve 2. Main pressure gauge 3. Branch pressure gauge (0.4 MPa)
1.2 Turn on the power to the hydrogen generator; once the pressure stabilizes, it should be around 0.3–0.4 MPa. (Figure 2)
Turn on the power to the air generator; once the pressure stabilizes, it should be around 0.3–0.4 MPa. (Figure 3)
Figure 2 (Hydrogen Generator) Figure 3 (Air Generator)
1.3 Connect the other ends of the copper tubing outlets for the carrier gas (blue), hydrogen (orange), and air (clear) to the corresponding gas inlet ports on the chromatograph (Figure 4) (Note: Open the control valves for each gas line (Figure 5))
Fig 4
Fig 5
Figure 5 (1: Carrier gas control valve; 2: Hydrogen control valve; 3: Air control valve) The thickness of the arrows indicates the direction of the valves.
1.4 Connect the chromatograph to the local area network (LAN) of the control computer using an Ethernet cable (this can be done by connecting directly to the computer's network port or to the switch on the computer's network). (Figure 6)
1.5 Remove the open-ended nut and the graphite injection needle with the steel sleeve. Connect the corresponding chromatographic column. The length from the column head at the capillary inlet end to the top of the graphite pad should be 13 mm, and the length to the detector end should be 79 mm. Tighten the open-ended nut.
1.6 Connect the power cord to the chromatograph. Turn on the power switch (the arrow indicates the power switch) (Fig. 6)
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