Metrohm 896 Professional Detector – Amperometry - Manual (Page 26)

4.1 Instrument test with dummy cell
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2.896.0020 896 Professional Detector – Amperometry
￭ Plug in the straight plug of the working electrode connection
cable (red sleeve) into the WE socket of the detector.
￭ Plug in the straight plug of the reference electrode connection
cable (black sleeve) into the RE socket of the detector.
￭ Plug in the straight plug of the auxiliary electrode connection
cable (blue sleeve) into the AE socket of the detector.
3 Insert the dummy cell
￭ Place the dummy cell into the tray of the detector.
￭ Attach the front lid.
Note
The metal parts of the cable plugs must not touch the front lid.
4 Adjust settings in MagIC Net™
In the program part Method, create a new method for the instru-
ment test with the dummy cell.
￭ Select the detector and add it as a new device.
￭ Select the DC mode.
￭ Set the following parameters for the DC mode:
– DC potential: 0.8 V
– Range: Auto
– Damping: off
￭ Add an analysis for the detector channel Current.
￭ Save the method.
In the program part Workplace:
￭ Load the method.
￭ In the Watch window, display the Current channel with at least
3 decimal places.
5 Carry out the test
In the program part Manual:
￭ Switch on the cell
After no more than 1 minute, the detector signal should level off
at 2.667 nA ± 7 %. Noise should not exceed 0.005 nA.