Yokogawa OX400 Low-Concentration Zirconia Oxygen Analyzer

OX400 is an oxygen analyzer with a zirconia sensor, with a measurement range extending from 0-10 ppm to 0-100% O2 by volume. In the sensor, the zirconia element and platinum layer are molecularly bonded by thin-film coating; the manufacturer states that this prevents separation, makes the sensor smaller and speeds up response.

Areas of use

• Oxygen control in semiconductor diffusion and drying furnaces and LCD production.
• Inert atmosphere monitoring in solder baths, reflow ovens and glove boxes in electronics production.
• Oxygen measurement to prevent explosion risk in powder conveying.
• Monitoring air leakage into inert gas lines and gas production processes.

Details of measurement ranges, sample conditions and communication are in the manufacturer's general specifications and user manual.

Choosing OX400

OX400 is intended for low-oxygen and inert environments; for in-situ measurement in hot flue gas, models whose probe enters the duct directly, such as ZR22G or ZR202, are selected. The instrument's documentation is in general specification GS11M10B01-01E and user manual IM11M10B01-01E.

Tetra determines the range and sample connection according to the application; line leak tightness, which matters in ppm-level measurement, and zero-span verification are checked during commissioning. Periodic calibration and sensor replacement are done on site.