Align conditions when two devices disagree

Compare calibration status, sensor location and measurement time. Do not choose a reference until both devices measure the same item and point.

31 December 2024Updated 23 September 2026

Short answer

Check both device IDs, calibration records, probe type, location, response time and clocks. Compare simultaneously at the same point and by the same method, then record results. If the difference persists, send devices for verification or use the procedure's reference instrument; refer product decisions to the responsible quality owner.

Different readings do not automatically mean a device has failed. First check position, measured object, contact method and timing differences.

Verify device and probe details

Record ID, calibration status, probe type, operating range and clock setting. State the difference if one reading is from a display and the other from a logged trace.

Compare under matched conditions

Place both sensors close together at the same point, using the same method and timing. Apply a consistent wait according to device instructions and note ambient conditions, product contact and lid state.

Escalate a persistent difference

Record results with device IDs and conditions. Use the reference instrument specified in procedure or send devices for verification and calibration; refer unexplained differences affecting product decisions to quality.

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