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2025-12-30

Kjeldahl Nitrogen Analyzer Troubleshooting: Fix "Insufficient Solution Level in Tank" Error

Laboratory work relies heavily on the stable operation of analytical instruments, and Kjeldahl nitrogen analyzers are indispensable for nitrogen content testing in food, agriculture, and environmental samples. However, the "Insufficient solution level in tank" error often disrupts test workflows—here’s how to fix it efficiently.

What Triggers the Error?

The error appears on the instrument display when the level sensor detects that the solution in one of the tanks (alkali, acid, distilled water, or receiving liquid tank) drops below the minimum level required for normal operation. This sensor is solely responsible for monitoring volume, so the core measurement functions of the analyzer remain unaffected.

Step-by-Step Troubleshooting

Identify the Deficient Solution: Check the system prompt first to confirm which tank (alkali/acid/distilled water/receiving liquid) is low on solution—this avoids blind operations.
Prioritize Safety: Pause the ongoing test program (if running). Wear gloves and goggles to protect against corrosive solutions, and ensure the work area is well-ventilated.
Handle the Sensor: Disconnect the level sensor cable from the problematic tank. Remember: Disconnection only stops volume monitoring, not the instrument’s core functions.
Refill the Solution: Open the tank lid and add the required solution (meeting purity and concentration standards) to the specified level as per the instrument manual.

After refilling, reconnect the sensor cable (if needed) and restart the instrument to verify the error is resolved. For persistent issues, contact the after-sales support team for professional assistance.

To prevent future errors, regularly check solution levels before starting tests and follow the instrument’s maintenance schedule—this ensures consistent performance and extends the device’s lifespan.