JIEBO Instrument · JIEBO-ONH508
ONH-508 Oxygen, Nitrogen & Hydrogen Analyzer
The ONH-508 simultaneously analyzes oxygen, nitrogen and hydrogen in steel, rare earth alloys, copper, zirconium, titanium, ceramics and inorganic powders. It combines pyroelectric infrared detection (for O and H) with thermal-conductivity detection (for N) and uses inert-gas-fusion sample preparation in an electrode pulse furnace (up to 3000 °C, 1500 A).
Specifications
| Measuring range | O 0.5 ppm – 20 %; N 0.5 ppm – 50 %; H 0.2 ppm – 0.1 % |
|---|---|
| Accuracy | O 1 ppm or RSD ≤ 1.0 %; N 1 ppm or RSD ≤ 1.0 %; H 0.2 ppm or RSD ≤ 2.0 % |
| Sensitivity | Minimum reading 0.01 ppm |
| Analyzing time | 120–240 seconds |
| Test methods | O: non-dispersive infrared; N: thermal conductivity; H: non-dispersive infrared |
| Carrier gas | Carrier: high-purity helium 99.99 % @ 0.20 MPa; Power: nitrogen or purified compressed air @ 0.35 MPa |
| Operating power | 220 V / 50 Hz single phase, 50 A; furnace 8.5 kVA max |
| Dimensions (L × W × H) | 600 × 700 × 900 mm |
| Weight | 160 kg |
Typical applications
- Steel and stainless steel — oxygen control after deoxidation
- Titanium and zirconium components — gas-content certification for aerospace
- Rare-earth and special alloys — quality control during melt
- Copper and electrical conductor materials — hydrogen and oxygen monitoring
- Ceramic and powder metallurgy — sintered gas content
Frequently asked questions
Why measure O, N, H together?
In high-performance materials (aerospace titanium, stainless steel, rare earths) all three light elements determine mechanical performance: oxygen embrittles, nitrogen affects strength, hydrogen causes cracking. A single instrument keeps the analysis consistent and reduces sample handling.
What sample preparation is needed?
Small solid samples 0.1–1.0 g, cleaned of surface oxide. Drop-in graphite crucibles fuse the sample at up to 3000 °C in helium carrier. Surface oxide removal is critical for hydrogen accuracy.
How does this compare with LECO-style ONH analyzers?
Same principle: inert-gas fusion + IR + TCD. The ONH-508 uses a high-stability pyroelectric IR detector and offers automatic high/low range switching. Performance is comparable for routine production work at significantly lower cost.
Lead time and consumables?
30 working days from confirmed order. Consumables include graphite crucibles, getter materials and calibration standards (CRMs). We can recommend local suppliers for helium and reference materials.