The Bühler BA 4000 portable oxygen analyzer installation and user manual provides safety guidelines, setup, operation, calibration and maintenance instructions.
The BA 4000 is a portable oxygen analyser that measures oxygen concentration in gases using the paramagnetic dumbbell ball principle. It is designed for use in a variety of non‑explosive environments and can operate on battery power or external mains.
This manual covers safety warnings, transportation and storage requirements, installation and wiring, operation procedures, calibration steps, filter and battery replacement, as well as repair, disposal and spare‑part information. This manual is written in Chinese.
| Measurement range | 0 – 10 Vol.% O₂ (order specific) |
|---|---|
| Accuracy | ±0.1 % O₂ (absolute) |
| Repeatability | ±0.05 % O₂ |
| Response time | <10 s |
| Zero drift | ±0.1 % Vol. O₂ per week |
| Span drift | ±1 % per week |
| Input temperature range | +5 °C to 40 °C |
| Input pressure range | 10 mbar to 1.5 bar |
| Sample‑gas flow (no pump) | ≈120 ml/min |
| Sample‑gas flow (with pump) | ≈30 l/h |
| Power supply | 230 V / 115 V, 50/60 Hz |
| Battery | 12 V, 2.7 Ah, ~14 h operation |
No. The device must not be operated in potentially explosive environments and should not have flammable or explosive gas mixtures passed through it.