Main Features of the ONH-5500 Device
Simultaneous multi-element detection of oxygen, nitrogen, and hydrogen in a single analysis.
Oxygen measured via Non-Dispersive Infrared (NDIR) detection; Nitrogen and Hydrogen measured via Thermal Conductivity Detection (TCD).
High-efficiency Graphite furnace capable of exceeding 3000 °C, enabling analysis of virtually all solid inorganic and metallic materials.
Compact analytical gas path that reduces helium or Argon consumption and analysis costs.
Automated range switching between high and low concentrations during analysis.
Real-time monitoring of critical parameters including power, voltage, current, gas flow, and furnace temperature.
Software-controlled automatic leak detection and advanced self-diagnostics.
Linearized algorithm developed by NCS for improved accuracy and stability in nonlinear detection systems.
Modular detection units, allowing the selection and combination of O/N/H channels as needed.
Imported high-performance components in key parts for enhanced reliability and long service life.
Structure and Function
Measurement Principle:
Oxygen are detected by NDIR sensors.
Nitrogen and Hydrogen is detected by a high-sensitivity thermal conductivity cell.
Heating and Sample Handling:
Utilizes a pulse heating furnace (0–1500 A, 7.5 kW) to melt samples at up to 3000 °C.
Capable of analyzing solids and inorganic materials including metals, ceramics, alloys, and powders.
Gas Flow & Pathway:
Features a highly efficient and concise gas path design with all-metal pipelines for improved airtightness.
Stable flow control system ensures consistent carrier gas delivery and repeatable results.
Software & Control:
User-friendly interface displaying real-time parameters (power, voltage, current, furnace temperature, gas pressure/flow, O/N/H baseline signals).
Data visualization tools for calibration and linearization adjustments.
Typical Analysis Time: ~3 minutes per sample.
Specialized Applications
Iron and steel analysis
Non-ferrous metals (e.g., aluminum, copper, etc.)
Metal powders
Ceramics
Minerals
Other solid inorganic materials
Design and Performance Features
Three-element simultaneous measurement for improved throughput and reduced sample use.
High signal stability with thermal conductivity baseline stabilization within 3–5 minutes of warm-up.
Compact internal design for faster analysis cycles and lower consumption of carrier gas.
Durable structure with all-metal gas pipelines and robust mechanical components.
Stable thermal and electrical control ensures accuracy even in extended analysis sessions.
Analysis precision:
Element | Low Range | High Range | accuracy |
Oxygen | 0% – 0.1 % | 0.01% – 2 % | +/- 0.1 ppm |
Nitrogen | 0% – 0.01% | 0.01% – 2 % | +/- 0.1 ppm |
Hydrogen | 0% – 0.005% | 0.005 – 0.5% | +/-0.01ppm |
Carrier Gases: High-purity Argon or Helium
