Alarm: No Gas Signal
Manufacturer: Yokogawa
Analyzer: TDLS8000 Gas Analyzer
Alarm Description
No Gas Signal indicates the TDLS8000 is not detecting any valid gas concentration. Measurement cannot be trusted until resolved.
Typical Symptoms
- Gas reading stuck at zero or baseline
- Calibration cannot be performed
- Laser and path appear normal
Probable Causes
- Obstruction in measurement path
- Gas not reaching the measurement location
- Laser power low or unstable
- Detector or electronics failure
Field Checks
- Inspect measurement path for dust or blockage
- Verify gas flow to measurement point
- Check laser power and detector signals
- Inspect electronics module
Corrective Actions
- Clear measurement path of dust/debris
- Ensure gas reaches analyzer
- Repair/replace laser or detector if required
- Replace electronics module if alarm persists