Manufacturer of coal & biomass lab analyzers · ISO 9001 · CE
Automatic Horizontal Coulometric Sulfur Analyzer
Coulometric titration total-sulfur analyzer, 20-position autosampler, 3–5 min per sample, range 0.01–40 %.
- 20 samples unattended, 3–5 min per sample
- Wide range 0.01 %–40 %, resolution 0.001 %
- 1150 °C for coal/coke, 920 °C for oil
- Open database for LIMS integration

Overview
The RI-S320 measures total sulfur in coal, coke, oil and solid biomass by coulometric titration — the classical reference method used in trade settlement. Load up to 20 samples (or run single samples), and the analyzer handles delivery, electrolysis, endpoint detection and reporting automatically.
A horizontal imported-material furnace with national-standard ceramic boats guarantees complete combustion, while the large-electrode electrolysis cell delivers repeatable results even at low sulfur levels. DSP control with hardware integration keeps real-time response and allows easy software upgrades.
Key Features
Multi-damping sample pusher
Shock-absorbing delivery mechanism feeds boats smoothly — no dropped or jammed boats, even during long overnight batches.
Large-electrode electrolysis cell
Bigger platinum electrodes improve charge efficiency and repeatability, especially on low-sulfur coal between 0.01 % and 1 %.
Self-diagnostics at boot
The instrument checks itself at power-on, displays fault codes and maintenance suggestions to keep downtime short.
Easy electrolyte service
Drain valve for quick cell rinsing plus an oversized drying tube cut consumable changes to minutes per week.
Technical Specifications
| Samples per run | 20 (or single sample) |
|---|---|
| Sulfur range | 0.01 % – 40 % |
| Resolution | 0.001 % |
| Sample mass | 45–55 mg (coal) · 80–100 mg (oil) |
| Test time per sample | 3–5 min |
| Furnace temperature | 1150 °C (coal/coke) · 920 °C (oil) |
| Temperature control accuracy | ±1 °C |
| Power | <3 kW |
| Dimensions (L×W×H) | 988×520×375 mm |
| Weight | 45 kg |
Full datasheet (PDF) available on request — specify voltage and plug standard.