Alarm: High Drift / Unstable Reading
Manufacturer: Yokogawa
Analyzer: TDLS8000 Gas Analyzer
Alarm Description
High Drift alarm indicates the TDLS8000 gas readings fluctuate beyond acceptable limits. Measurement is unstable.
Typical Symptoms
- Rapidly fluctuating gas readings
- Calibration occasionally fails
- Alarm triggers intermittently
Probable Causes
- Contaminated or aging sensor
- Obstruction or instability in measurement path
- Laser output instability
- Electronics module malfunction
Field Checks
- Inspect sensor/laser condition
- Verify measurement path is clean and stable
- Check laser output stability
- Inspect electronics module
Corrective Actions
- Clean or replace sensor/laser
- Clear and stabilize measurement path
- Repair or replace laser if needed
- Replace electronics module if alarm persists