Hach DR 5000 - Drift Check

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Advanced Operations
7. The result is displayed and is to be compared with the
nominal/standard data of the test filter. If a specific sample is
used, the measured results must be evaluated against
user-defined requirements.
8. Press Cancel to return to Optical Checks.
6.8.3.5 Drift check
The Drift Check test is used to test the stability of the instrument.
Note: The Drift Check runs 1 hour.
1. Press Drift Check in the Optical Checks menu.
2. Press λ to input the wavelength.
3. Input the wavelength and press OK to confirm.
4. Press Start.