Clarity discussion forum

Good afternoon,
here again the question:

I like dual channel with one time base.
I would like to get indpendent calibration files and calibrations for both channels, because peak one is in channel one and not in channel two. So far fine. Peak three is in channel one and two with different response. that is normally everywhere coming up, where two channel capability is used. If it is not possible to have both calibration files, it is nonsens to use. copy to a different Instrument and so on is nasty and time consuming.
Whow could this easily managed??

Thanks in advance

Kind regards Klaus Jahn

-------- Original Message --------
Subject: RE: channel operation (16-Nov-2005 9:51)
From: kohutek@dataapex.com
To: chroman@chroman.de

> To operate the A/D channels independently you will have to purchase an add-
> on Instrument.
>
> 1 Instrument = 1 time base. This means that you are able to measure a
> chromatogram containing both signals, but you cannot use it for two
> independent chromatographs, where you need to measure independent analysis.
>
> You can contact your dealer and order Add-on Instrument (o/n C55)
>
> Petr Kohutek
> DataApex
>
>

Dear Klaus,

When you will use two channels with one timebase, then you need only one Clarity Instrument.
The chromatogram that you will measure with such configuration will contain two signals.
Have a look at the configuration examples here: http://www.dataapex.com/products/clarit ... xample.php

The calibration file is also capable of handling multiple signals.
The calibration table contains:
a) items that are common for both signals (e.g. Compound Name or Amount) and
b) items that are specific for each signal (e.g. response, etc.).

With best regards

Petr Kohutek
DataApex

A small note:
In calibration window in menu Calibration - Set signal you can set
appropriate calibration curves for required signal (=channel).
You can use colored buttons on toolbar directly as well.
Each parameter (=column) dedicated to signal differs from other by
color.

If you would like to evaluate one peak at both signals with different
calibration curve (=response) you need to add two lines into calibration
Compounds table with similar names and similar retention times.
One will be used for first signal (selectable in first column Used), the
second for other signal.

best regards
Jan Hruby

Dear Klaus,

the Clarity calibration file is common for both signals, however only some columns (compound name, retention time, ID windows, amount) are shared, while the others (responses, response factors, LOD, LOQ) are individual for each signal. For each compound you can select, if it will be evaluated on the specified signal. The Result table is separate for each signal, alternatively the results (calibrated only) can be shown in a common Summary table. Thus there is no problem to evaluate one component giving different response on the individual signals (as long as the amount is the same) in one chromatogram with a single calibration file..

Best regards

Ivan Vins
DataApex