HS 55 (Batch Mode)
Maintenance and care
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}
In the Quick Start window, select the HydrEA method and initialize the device config-
uration.
}
Close the window with OK.
}
Click the Furnace button.
}
Select the Control tab and enter the parameters for cleaning the graphite tube in the
Clean furnace area:
– Temp. = 2200 °C (for Ir) or 1000 °C (for Au)
– Ramp = 500 °C/s (= temperature increase)
– Hold = 10 s
}
Click the Start button to start the graphite tube bake-out.
ü
The graphite tube is cleaned by a brief bake-out.
6.8.2
Evaporating the iridium or gold coat
A used-up iridium or gold coat can be evaporated by baking out at temperatures
≥2500 °C (Ir) or ≥1800 °C (Au). Attention! The graphite material of the furnace starts to
decompose at temperatures of 2600 °C or higher.
You can then re-coat the graphite tube from which the metal coat has been removed for
the HydrEA system. You can also use the graphite tube as a standard graphite tube for
solution analysis (standard operation).
}
Start the ASpect LS or ASpect CS program.
}
In the Quick Start window, select the HydrEA method and initialize the device config-
uration.
}
Close the window with OK.
}
Click the Furnace button.
}
Select the Control tab and enter the parameters for cleaning the graphite tube in the
Clean furnace area:
– Temp. = ≥2500 °C (for Ir) or ≥1800 °C (for Au)
– Ramp = 500 °C/s (= temperature increase)
– Hold = 10 s
}
Click the Start button to start the evaporation of the metal coat.
ü
The metal coat is removed from the graphite tube by baking out.
