01Make the comparison fair
Confirm both instruments' ranges, calibration status, units and concentration basis. Identify whether they sample the same location at the same time. Different sample pressure or a long transport delay can create an apparent disagreement during a changing process.
02Review the sample arrangements
Check materials, connection integrity, flow and stabilization with the relevant suppliers. Trace-oxygen measurements are particularly sensitive to sample contamination. A portable analyser connected temporarily should not automatically override an installed instrument without checking its setup.
03Resolve with a defined method
Use an agreed reference or verification plan and preserve all results, including unfavourable ones. Decide how process-quality release is managed while the issue remains unresolved. After correction, document which cause was established and how the installed readings were confirmed.
These public references explain general technology. They do not establish AIDEKE model performance, a supply commitment or a third-party endorsement. The article is an independent editorial explanation; the confirmed technical agreement governs a specific project.
- Official reference: test.parker.com ↗
- Official reference: vaisala.com ↗
- Official reference: servomex.com ↗