The Mettler‑Toledo Thornton 550 TOC Analyzer user manual provides installation, operation, maintenance and calibration instructions.
The Thornton 550 is a total organic carbon (TOC) analyzer designed for continuous online measurement in industrial water quality applications. It uses differential conductivity and UV oxidation to determine TOC levels from 0.1 ppb up to 1000 ppb.
This manual covers safety guidelines, installation and wiring, sample‑flow setup, configuration menus, operation procedures, routine maintenance, calibration methods, advanced settings, technical specifications and warranty information. This manual is written in Chinese.
| TOC measurement range (standard mode) | 0.1-1000 ppb |
|---|---|
| TOC measurement range (SX mode) | 0.05-30 ppb |
| Resolution | 0.01 ppb |
| Detection limit | 0.1 ppb |
| Power supply | 100-240 VAC, 50/60 Hz, max 50 W |
| Dimensions | 327 mm W × 167 mm H × 350 mm D |
| Weight | 8 kg |
| Analog output | 4‑20 mA DC (selectable for TOC, resistivity or temperature) |
| Alarm contacts | Two SPDT contacts (NO/NC) |
| Operating temperature / humidity | 5‑40 °C, 5‑80 % RH (non‑condensing) |
The instrument requires 100‑240 VAC, 50/60 Hz and consumes up to 50 W.
It provides a self‑powered 4‑20 mA DC signal that can be set for TOC, resistivity or temperature.
The standard mode measures TOC from 0.1 ppb up to 1000 ppb.
Power must be disconnected and installation must be performed by trained personnel following the safety warnings.