Adjusting The Epa Sampler - Endress+Hauser analytikjena multi N/C UVHS Operating Manual

multi N/C UVHS, multi N/C pharma UV
6.2.3

Adjusting the EPA Sampler

} Set the canula heights at position 1 so that the stirring rod can rotate unhindered
(approx. 5 mm clearance).
} After each change, click on [Rinse position adjust] or [Position 1 adjust].
ü The autosampler will move to the new position.
} Repeat these steps until the canula position is optimized.
} Click on [Save] to save the adjustment values.
} Open the Sampler Alignment window again. Move to the flushing position and posi-
tion 1 with the buttons to check.
ü The autosampler is adjusted.
Adjusting the autosampler for automatic acidification
The autosampler can automatically acidify samples for NPOC measurement. The immer-
sion depth of the canula in the sample vessel depends on the z-axis direction adjust-
ment for position 1.
} Adjust the canulas at position 1.
} Check the adjustment values via a test measurement.
} Ensure the canula goes through the sample lid but does not immerse in the sample
liquid during acidification.
NOTICE
Risk of bending
The canula may bend during adjustment.
¡ Unscrew the screw connections on the canulas before adjustment.
Clamp the two canulas high enough in the holder to prevent them dipping into the ves-
sels (basic position).
During adjustment, the sample intake canula must be adjusted to the rinse position and
to sample position 1. Alignment is carried out by increasing or decreasing the x-, y- and
z-axis values.
For sample vessels with septum caps, special sample intake and purging canulas with
piercing function are required: Piercing needles with ventilation slot.
Maintenance and care
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