Swan Analytical Instruments AMI Turbiwell, Руководство оператора

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A-96.250.511 / 091120
AMI Turbiwell
Maintenance
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6.5. Verification
Due to the technology and design of the instrument, a calibration is
not required. However, a periodic check of the instrument perfor -
mance can be performed. The check can be performed either with
a Swan Verification Kit or with a wet verification. To find out which
methods are approved, contact your local regulatory authority.
6.5.1 Swan Verification Kit
There are two different types of Swan Verification Kits:

Solid verification kits consisting of a glass prism with a defined
turbidity value:
– 7027 High
– 7027 Low
– W/LED High
– W/LED Low

Liquid verification kit: A small cuvette that can be filled with an
aqueous suspension or emulsion.
Note: For solid verification kits, a recertification is recommended
every two years.
The procedure is essentially the same for both types of verification
kits. If a liquid verification kit is used, also follow the instructions for
filling in section Verification Kit Turbiwell Liquid, p. 69 .
Matching Each verification kit has to be matched with the latest calibration be -
fore it can be used for a verification. The <Matching> function can be
started in menu <Maintenance>/<Matching>.
Up to 10 Verikits can be matched for one AMI Turbiwell. An existing
Verikit can be overwritten but not deleted.
Note:
It is very important that the drainage valve is closed during
the matching process. Otherwise wrong measured values
caused by residual light will result.
• Instruments equipped with automatic drainage: No action
necessary. The drainage valve opens and closes automatically.
• Instruments with a manual drainage valve: Close the drainage
valve before matching.