AA-1800 Atomic Absorption Spectrophotometer Faults and Troubleshooting Methods - Database & Sql Blog Articles

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Faults and troubleshooting methods of AA-1800 atomic absorption spectrophotometer

Key words: atomic absorption spectrophotometer; fault and troubleshooting method; US instrumentation ; AA-1800 fault phenomenon 1. The main power indicator is not lit. Cause: 1. The power cord is disconnected or the contact is poor. Instrument fuse blown 3. Poor contact of the fuse tube: 1. Connect the power cord, press the plug 2. Replace the fuse 3. Clamp the fuse to make the contact good. 2. Initialize the middle-wavelength motor to appear "X". Cause: 1 Whether the hollow cathode lamp is installed 2. There is object blocking in the optical path 3. Communication system contact interruption method: 1. Re-install the lamp 2. Remove the obstruction in the optical path 3. Restart the instrument 3. Element light does not light Fault cause: 1 Whether the power cord is off welding 2. Whether the lamp power socket is loose 3. The lamp is broken. Remedy: 1. Reinstall the lamp 2. Replace the lamp position 3. Change the lamp 4. When the peak is low, the energy is too low. 1. Element light does not light 2. Element lamp position is not correct 3. Lamp aging elimination method: 1. Reinstall hollow cathode lamp 2. Reset lamp position 3. Replace new lamp 5. Click “Ignition”, no high voltage discharge ignition failure Reasons: 1. No air pressure 2. Acetylene is not open 3. Waste liquid level is low 4. Acetylene leaks, The police elimination method: 1. Check the air compressor 2. Check the acetylene outlet pressure 3. Add distilled water 4. Turn off the emergency fire extinguishing 6. Test the baseline instability and noise. Causes: 1. The instrument energy is low, and the multiplier tube negative pressure is 2. Inaccurate wavelength 3. Element lamp emission instability method: 1. Check lamp current 2. Find peak is normal 3. Replace known lamp 7. Standard curve bending failure Cause: 1. Light source lamp loses gas 2. Working current is too large 3. Waste liquid flow is not smooth 4. Sample concentration is high. Exclusion method: 1. Replace lamp or reverse connection 2. Reduce current 3. Take measures 4. Reduce sample concentration 8. Analysis result is high Fault cause: 1. Solution Solid undissolved 2. Background absorption illusion 3. Blank uncorrected 4. Standard liquid deterioration method: 1. Increase the flame temperature 2. Retest near the resonance line 3. Use blank 4. Re-match the standard solution 9. The analysis result is low The cause of the failure: 1. The sample volatilization is not complete 2. The standard solution is improperly prepared 3. The sample concentration is too high 4. The sample is contaminated by the method: 1. Adjust the relative position of the impact ball and the nozzle 2. Re-match the standard solution 3. Reduce Sample concentration 4. Elimination of pollution Keywords: atomic absorption spectrophotometer; failure and troubleshooting methods; analysis instrument ; AA-1800


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