This historical checklist comes from Zhejiang Highpower. Its temperatures and maintenance intervals describe the source guidance, not universal requirements; the current instrument manual and site procedure take precedence.
- Calibrate before and after use. When the instrument is used frequently, schedule intermediate checks.
- Check the sampling system for leaks before measuring.
- Start the instrument in clean air. Connect the flue-gas sampling probe after the instrument stabilises.
- After a crash or power interruption, check for zero shifts and recalibrate on site with standard gas before resuming measurements.
- The source recommends running in clean air for another 5–10 minutes after measurement to protect the sensors.
- Replace filter elements and condenser filter pads regularly to prevent dust contamination and measurement errors.
- Keep the instrument away from heat sources and radiant heat. The source gives a sensor temperature of 22–25 °C; use the limits for the installed model.
- The source recommends charging portable instruments every 2–3 weeks. Follow the battery instructions for the model in use.
- For dusty, high-concentration flue gas, including de-NOₓ plant inlet/outlet and dust-collector inlet locations, provide suitable filtration.
- For low-concentration measurements, the source describes heating to 120–140 °C, dust removal and moisture removal. The appropriate conditioning method depends on the gas species and instrument.
- Handle the analyser carefully to prevent damage to internal components.