Yokogawa OX400 — Low Concentration Zirconia Oxygen Analyzer
Low-concentration zirconia oxygen analyzer for sampled gas, including oxygen in nitrogen, argon and helium. Configuration details below follow GS 11M10B01-01E.
Measurement and sampling
A heated zirconia sensor measures oxygen in gas supplied to the analyzer. The documented sample-drawing options are a built-in pump, an aspirator, or no suction device. Match sample supply and outlet conditions to the ordered option.
This documentation does not establish suitability as a direct-insertion boiler flue-gas probe.
Configuration and outputs
The specification lists analog outputs and RS-232 communication. Check the installed model code and wiring documentation; Modbus/Ethernet and boiler mounting-flange or purge-system claims are not supported here.
Calibration and service
Use the OX400 instructions matched to the installed range and sample-drawing option. A generic zirconia-probe zero/span sequence is not supplied here. Confirm gas suitability, sample connections and operating conditions before interpreting a fault.
Discussion
Share OX400 field experience with the model code, sample-drawing option and observed diagnostics. (Requires GitHub login.)
Technical references
Updated against manufacturer documentation. Match the document to the installed model and options.
- Yokogawa: OX400 Low Concentration Zirconia Oxygen Analyzer — GS 11M10B01-01E, 3rd edition, March 2011; amended pages June 2017.