FLEXI-FLOW NAMUR status LED

The status LED uses different colors to reflect the current status of the instrument:

Green    Normal operation
Red        Failure
Yellow   Out of specification
Blue        Maintenance required 
Orange  Check function

- The colors are based on the NAMUR NE 107 standard and are a simplified representation of the instrument's diagnostic data.
- After powering up or restarting the instrument, the status LED cycles through all status colors once.
- After the startup cycle, the status LED assumes the color associated with the current instrument status.

Bluetooth
- When Bluetooth is active, the status LED flashes blue once every 3 seconds. 
- If the instrument has a Bluetooth connection, the status LED flashes blue twice every 3 seconds.
- Bluetooth communication is not reflected by the status LED.
- Bluetooth indications are not related to the blue NAMUR indication.