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Device ZRJ-1 for determining the tendency of coal to spontaneous combustion
Product Description The ZRJ-1 is a dedicated gas chromatograph designed and manufactured to meet the requirements of the coal industry. Equipped with two FID detectors and one TCD detector, which operate independently in different channels to determine H...
Description
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Product Description
The ZRJ-1 is a dedicated gas chromatograph designed and manufactured to meet the requirements of the coal industry. Equipped with two FID detectors and one TCD detector that operate independently in different channels to detect H₂, O₂, N₂, CO, CO₂ and hydrocarbons. Thanks to the three-channel workstation, a complete analysis of all components is completed within 5 minutes.
Main Features
1. The device is manufactured using imported technologies, and is characterized by stable operation, wide functionality and a high degree of automation.
2. Equipped with a microprocessor automatic control system, a full-fledged Chinese keyboard and a character display.
3. The speaker thermostat has a large volume; The perforated internal design ensures uniform air distribution, highly accurate temperature control and excellent analytical reproducibility.
4. Allows the determination of 9 gases: H₂ (using argon as a carrier gas), O₂, N₂, CO, CO₂, CH₄, C₂H₄, C₂H₆, C₂H₂.
5. Advanced gas circuit with three-line six-port valve and metering loop, equipped with TCD, FID and nickel converter. This design eliminates mutual interference between components, providing better repeatability, sensitivity and accuracy.
6. The device is equipped with protection functions for gas loss, power failure and overheating.
7. Determination of CO, CO₂ and hydrocarbons is carried out with separate sample injection over time; two columns operate in parallel with a common FID detector.
8. Built-in filter membrane made of stainless steel mesh prevents clogging of gas lines with coal dust, typical of mining conditions.
9. All detectors are made on a modular basis using advanced technologies; characterized by high sensitivity, low noise level and wide linear range; Can be equipped with various detectors depending on analysis tasks.
10. At the customer’s request, the device can be equipped with a touch screen, reverse control functions (reverse control) and an EPC control system for gas parameters.
Specifications
Minimum detectable concentrations:
H₂ ≤ 5 ppm; CO, CO₂ ≤ 2 ppm; hydrocarbons ≤ 0.1 ppm.
Thermal Conductivity Detector (TCD):
Design: semi-diffusion type, four-arm rhenium-tungsten filament;
Power supply: stabilized current;
Sensitivity: ≥2500mV·ml/mg (based on n-hexadecane);
Noise: ≤ 0.03 mV;
Drift: ≤0.1mV/30min.
Flame Ionization Detector (FID):
Design: cylindrical collector, quartz nozzle;
Detection limit: 5x10-12g/s (for n-hexadecane);
Noise: ≤ 5×10⁻¹³ A;
Drift: ≤ 5×10⁻¹² A/30 min.
Temperature control:
Column thermostat temperature range: from 10 to 399 °C (step 1 °C);
Temperature maintenance accuracy: ±0.1 °C; the ability to set the overheating protective limit from the keyboard;
Detector temperature range: from 10 to 399 °C (step 1 °C);
Temperature maintenance accuracy: ±0.01 °C (for TCD) and ±0.1 °C (for other zones).
Workstation
High precision: USB interface, 24-bit high resolution A/D, ±1uv resolution;
Input range: external data acquisition unit, 2 input channels, range from –1 to +1 V (expandable to ±2 V);
Sampling rate: 6, 12, 25, 50 measurements/s;
Dynamic range: 10⁶ (minimum unit - 1uv);
Integral sensitivity: 1μv·sec (i.e. peak area units);
Linearity: < ±0.1%;
Reproducibility: 0.06%.
Dimensions, weight and power supply
Overall dimensions: width 606 mm x height 450 mm x depth 450 mm;
Weight: 45 Kg;
Power supply: 220V 50HZ 2100W.
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