Benchtop combustion analyzer CHN5520

Product descriptionCHN5520 Carbon, Hydrogen and Nitrogen (CHN) analyzer is a precision laboratory instrument developed from extensive technical experience and user requirements. It delivers broad linear range, low detection limits and rapid analysis for accurate determination of carbon, hydrogen and nitrogen in coal and other solid materials. The instrument provides stable operation and a straightforward workflow adapted to laboratory environments.

Design and placementCHN5520 adopts a horizontal benchtop configuration suitable for standard laboratory tables. The layout facilitates sample loading and routine operation, and supports unattended sequences using the automatic sample handling system.

Scope of application of CHN analyzerSuitable for quantitative analysis of carbon, hydrogen and nitrogen in coal, coke and other solid materials. Typical users include power plants, coal mines, commodity inspection bodies, environmental laboratories, geological survey, metallurgy, pulp and paper, chemical industry, research institutes and educational laboratories.

Technical Parameters (table)MODEL: CHN5520
Measuring range: Carbon: 0.005%–100%; Hydrogen: 0.01%–60%; Nitrogen: 0.008%–60%
Repeatability: Carbon (Cad≤0.5%); Hydrogen (Had≤0.15%); Nitrogen (Nad≤0.08%)
Temperature control range: RT+10 to 1050℃
Temperature control accuracy: ±1℃
Sample mass: 80–100 mg recommended
Sample delivery: automatic delivery and placement; samples can be added/replaced during test
Sample capacity: 39 per batch (78 optional); samples can be added or replaced during analysis
Single sample analysis time: approx. 4 min
Carrier gas (He): purity ≥99.995%; pressure 0.25±0.1 MPa
Supporting gas (O2): purity ≥99.5% for hydrocarbons; ≥99.995% for nitrogen analysis; pressure 0.25±0.1 MPa
Motive gas: oil-free and water-free inert gas; pressure 0.29±0.1 MPa
Power: ≤4.5 kW
Placement: horizontal
Dimensions (mm): 690 × 745 × 725
Weight: 110 kg

Technical features of CHN analyzer

• Automatic sample handling: 39 positions standard (78 optional) with automated feeding, placement and cycle testing; samples may be added or removed during operation.
• Horizontal benchtop layout optimized for laboratory installation and operator access.
• Temperature control using advanced PID algorithm: furnace accuracy ±1℃; constant-temperature chamber and gas reservoir accuracy ±0.1℃.
• Integrated absolute pressure sensor monitors the entire gas circuit; automatic leak and component integrity tests for furnace, infrared cell, thermal conductivity cell and gas storage.
• Measurement methods: infrared absorption for carbon and hydrogen; thermal conductivity detection for nitrogen.
• High automation and throughput: CHN analysis time approximately 4 minutes per sample.
• Optional automatic cool-down and shutdown after completion to enable unattended operation.
• Customizable report generation to customer requirements.
• Laboratory Information Management System (LIMS) connectivity for result backup and upload.

Standard configuration

• 1 computer
• 1 printer
• 1 CHN5520 analyzer set

Technical characteristics

• Model: CHN5520
• Measuring range: Carbon 0.005%–100%; Hydrogen 0.01%–60%; Nitrogen 0.008%–60%
• Repeatability: C ≤0.5% (Cad); H ≤0.15% (Had); N ≤0.08% (Nad)
• Temperature control range: RT+10 to 1050℃
• Temperature control accuracy: ±1℃
• Sample mass: 80–100 mg recommended
• Sample handling: automatic delivery and placement; samples can be added/replaced during test
• Sample capacity: 39 per batch (78 optional)
• Single sample analysis time: ~4 minutes
• Carrier gas (He): purity ≥99.995%, pressure 0.25±0.1 MPa
• Supporting gas (O2): purity ≥99.5% for hydrocarbons; ≥99.995% for nitrogen analysis; pressure 0.25±0.1 MPa
• Motive gas: oil-free and water-free inert gas, pressure 0.29±0.1 MPa
• Power consumption: ≤4.5 kW
• Placement: horizontal
• Dimensions (mm): 690 × 745 × 725
• Weight: 110 kg