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3 Installation
874 Oven Sample Processor
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13
NOTICE
The sample holder may not be inserted or removed unless it has cooled
down.
Proceed as follows:
1
Insert the 6.2627.010 oven insert with the spring in place into the
oven from above and slide it all the way to the bottom.
2
Place the sample holder 6.2063.020 into the oven from above.
3
Tighten the sample holder with the supplied hex screws. The required
hex key is part of the accessories.
NOTICE
If vessels with other dimensions are to be used, then individually modi-
fied sample holders can be ordered. The precise vessel dimensions
(including tolerances) will be required when ordering . Non-standard
sample vessels may only have dimensions within the following limit val-
ues:
￭ Diameter 10.0 - 32.0 mm
￭ Immersion depth 20.0 - 45.0 mm
3.4 Mounting needles
Two different types of needle holders are available for mounting needles.
The length of the needle holder defines how deep the needle for the gas
inlet enters the sample vessel. The 6.2049.040 needle holder with a
length of 58 mm ensures that the needle penetrates the liquid or powdery
sample. The carrier gas flows through the sample and efficiently removes
the contained moisture.
If there is a risk that the heated sample may block the needle, use the
6.2049.050 needle holder with a length of 73 mm. In this case, the
needle for the gas inlet enters the sample vessel slightly more than the
outlet needle and it does not have any contact with the sample.
Needle holders with the dimensions required for situations calling for spe-
cial sample vessels can be supplied by Metrohm upon request.
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