Problem & answerW-01
Scale Reading Unstable or Drifting
Likely causes
- Scale not level or on an unstable bench
- Vibration from nearby equipment
- Air drafts from doors, vents or extraction
- Static charge on the container or powder
- Scale not warmed up
- Material touching the draft shield or platform edge
How to fix it
- 1Check the level bubble and adjust the feet.
- 2Move the scale away from vibration and drafts, or shield it.
- 3Allow the warm-up time stated in the SOP.
- 4Use an anti-static container or earth the container; avoid plastic where static is a problem.
- 5Make sure nothing touches the platform except the load.
- 6Re-zero and repeat the weighing.
It is fixed when
Reading settles within the scale’s stated stabilisation time and repeats on a re-weigh.
Stop it coming back
- Site scales away from doors, vents and vibrating equipment.
- Check the level at the daily verification.
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