CHN Elemental Analyzer
Carbon, hydrogen and nitrogen in ~300 s: IR detection for C/H, thermal conductivity for N. 36-position autosampler with cycle loading.
- C/H/N in ~300 s per sample
- 36-position autosampler, insert-anywhere queue
- Repeatability: C ≤0.5 %, H ≤0.15 %, N ≤0.08 %
- ASTM D5373 & GB/T 30733 compliant
Overview
The RI-CHN2200 measures carbon (0.005–100 %), hydrogen (0.05–25 %) and nitrogen (0.01–50 %) in one run — infrared absorption for C and H, thermal conductivity for N. The pneumatic turntable loads 36 samples at once and accepts inserts at any position, so urgent samples are measured on arrival.
It is the most compact and lightest analyzer in its class, yet keeps a high-stability self-developed IR cell with low drift. Gas-path self-diagnosis pinpoints leaks automatically, and idle periods trigger automatic cool-down to save energy and extend heater life.
Key Features
Come-and-test workflow
Cycle loading plus arbitrary insertion means priority samples never wait behind a full batch.
Self-developed IR cell
Fully in-house, low-drift infrared cells for C and H — proven in thousands of field installations.
Automatic leak localization
Gas-path diagnostics identify the leak point automatically, turning day-long maintenance into minutes.
Remote supervision
Network interface streams results to LIMS and supervises the entire testing process for audit.
Technical Specifications
| Parameter | Declared value | Unit |
|---|---|---|
| Method | C, H: infrared absorption · N: thermal conductivity | — |
| Range (C) | 0.005 % – 100 % | % |
| Range (H) | 0.05 % – 25 % | % |
| Range (N) | 0.01 % – 50 % | % |
| Analysis time | ~300 s per sample | s |
| Repeatability | Cad ≤0.5 % · Had ≤0.15 % · Nad ≤0.08 % | % absolute |
| Sample mass | 70–80 mg | mg |
| Autosampler | 36 positions, cycle loading, arbitrary insert | positions |
| Power | ≤4 kW | kW |
| Weight | 100 kg | kg |
Download datasheet (PDF) or request a copy with your voltage & plug standard.
Standards: what each number covers
Buyers compare instruments by standard number, then have to look up the title and the relationship. This table does that for you. “Declared” means the method is named for this model; “equivalent” means the method is compatible in principle and must be verified against your own procedure; “referenced” means the standard supplies qualification or test conditions rather than the measurement itself. Final method compatibility depends on the configured instrument and your written test procedure.
| Standard | Title and relevance | Relationship |
|---|---|---|
| ASTM D5373-14 | Standard Test Methods for Determination of Carbon, Hydrogen and Nitrogen in Analysis Samples of Coal and Carbon in Analysis Samples of Coal and CokeCHN method for the elemental analyzer (C and H by IR absorption, N by thermal conductivity). | Declared compliance |
| GB/T 30733-2014 | Determination of total carbon, hydrogen and nitrogen in coal (GB/T series)Chinese national CHN method; the pairing that lets one dataset satisfy both domestic and export reporting. | Declared compliance |
Listed applications
Frequently Asked Questions
Do I need CHN analysis if I already run proximate analysis?
They answer different questions. Proximate analysis gives moisture, ash, volatile matter and fixed carbon — the practical basis for combustion and pricing. Ultimate analysis gives C, H, N (and S from a sulfur analyzer) — the basis for calorific-value correlation, emissions calculations, CO2 accounting and stoichiometric combustion design. Power plants and cement kilns usually need both; a mine's routine quality control may only need proximate.
How is nitrogen measured, and what interferes?
Carbon and hydrogen are measured by infrared absorption after combustion; nitrogen is measured by thermal conductivity after reduction to N2. Because the nitrogen signal is a thermal-conductivity difference, the gas path has to be free of water and of residual oxygen, and the carrier-gas purity matters. That is why leak-tightness and the reduction-tube condition are part of routine maintenance rather than optional checks.
Which standards are declared for the RI-CHN2200, and are they equivalent or directly declared?
RI-CHN2200 is listed with: ASTM D5373-14 (declared compliance); GB/T 30733-2014 (declared compliance). The standards table below shows what each number covers. Final method compatibility depends on the configured instrument and the customer's written test procedure.
Which samples can the RI-CHN2200 be used for?
Listed applications: Coal & coke ultimate analysis, Biomass & SRF, Petroleum & chemicals, Fertilizers, Food & feed (N/protein). Send the sample matrix, preparation method and reporting standard so the configuration and the acceptance criteria can be confirmed in writing.
How do I get a quotation and the datasheet for the RI-CHN2200?
Send the sample type, daily throughput, required standard, destination country, voltage and plug standard, and any prequalification documents your buyer requires. RoyIntelli will confirm the configuration, the documents available for that model and the commercial terms in a written quotation. Final specifications, lead time, warranty and payment terms are confirmed in the Proforma Invoice.