Analytik Jena ZEEnit 700
Analytik Jena · Model ZEEnit 700
8-lamp turret suited for coded lamps Transverse heated graphite tube furnace Furnace camera to monitor and control sample introduction and combustion in the graphite tube Deuterium and Zeeman background correction Automatic optimization routines for flame composition and burner height Atomization and pyrolysis temperature, magnetic field strength, two-field and three-field correction mode Superior aspherical optical system with extraordinary components, such as a quartz coated toric mirror, provides excellent light throughput Magnetic field technology, 3-field mode for extension of the linear concentration range Two atomizers combined in a single instrument allow switching between flame, hydride and graphite furnace techniques without any mechanical movement.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Low lamp / detector energy
HighSymptoms: Energy level for a hollow-cathode / D2 lamp below the 60-80% window, peak search fails or deviates >0.5 nm, poor sensitivity.
Root cause: Aged hollow-cathode lamp, dirty optics (quartz-coated toric mirror), or a lamp-turret alignment fault.
Graphite furnace formation / temperature fault
HighSymptoms: Formation factor outside +/-10%, poor atomization, high blank, tube fails quickly.
Root cause: Graphite tube at end of life, worn furnace electrode contacts, or a furnace power / thermal-sensor fault.
MPE autosampler alignment / dosing fault
MediumSymptoms: MPE injector not aligned to the furnace / sample cups, inconsistent injection volume, spilled sample.
Root cause: Autosampler arm misalignment or a worn dosing tip / pump.
Zeeman magnet / background-correction fault
MediumSymptoms: Background correction poor, non-linear calibration, 2-field/3-field mode errors.
Root cause: Magnet drive or control fault, or contamination in the atomizer path.
Flame / hydride system fault (if used)
MediumSymptoms: Unstable flame, burner-height optimisation fails, hydride generation weak.
Root cause: Nebuliser blockage, gas-flow control fault, or a burner issue.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Hollow-cathode lamp (element-specific, coded)
Class Periodic replacementRel. cost $$$R&R Fairly easy
Graphite tube (transverse heated)
Consumable; life depends on matrix and program.
Class ConsumableRel. cost $$R&R Fairly easy
Furnace electrode / contact set
Class Periodic replacementRel. cost $$R&R Moderate
MPE autosampler dosing tip / pump
Class Periodic replacementRel. cost $$R&R Moderate
Nebuliser (flame mode)
Class Periodic replacementRel. cost $$R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Hollow-cathode lamp (element-specific, coded) | Periodic replacement | $$$ | Fairly easy |
| Graphite tube (transverse heated) Consumable; life depends on matrix and program. | Consumable | $$ | Fairly easy |
| Furnace electrode / contact set | Periodic replacement | $$ | Moderate |
| MPE autosampler dosing tip / pump | Periodic replacement | $$ | Moderate |
| Nebuliser (flame mode) | Periodic replacement | $$ | Fairly easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Low energy / peak search fails on a lamp
- Run the adjustment of hollow-cathode lamps and start the peak search (line maximum).
- Check the current energy level of the HCL/D2HCL - it should be 60-80%.
- If low, clean the optical path and re-check; replace the lamp if still low.
- Confirm the atomizer system is free of contamination.
- Re-verify with the vanadium (or element) test standard per the maintenance protocol.
Symptom: Furnace formation factor out of range
- Start the formation program for the graphite furnace and check the factor is within +/-10%.
- Fit a fresh graphite tube if the current one is spent.
- Inspect and clean the furnace electrode contacts.
- Check the MPE injector alignment relative to the furnace and sample cups.
- Re-run the formation program and the element check standard.
Documents & Manuals
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