Metrohm 797 VA Computrace Uživatelský manuál stáhnout pdf (Strana 267)

8.10 Diagnostic procedures

797 VA Computrace – Software

255

4. Select the method file Test797_L.mth in the OPEN window and

click

<OK>. The method is loaded into the WORKING METHOD

SPECIFICATIONS

window.

5. Connect the dummy cell at the 797 VA Computrace stand: At-

tach electrode cable AE to clamping screw AE, attach elect-

rode cable RE to clamping screw RE, attach electrode cable WE

to clamping screw WE-L.

6. Click on or MAIN WINDOW / Window / Monitor to open

the MONITOR window.

7. Start the measurement by clicking the icon in the MAIN

WINDOW

or the button in the MONITORING win-

dow.

8. Enter the Sample ID (used as part of the determination file

name) in the PLACE SAMPLE window and click <OK>.

9. At the end of the measurement, a curve is printed out. This

curve should satisfy the following conditions:

• The plotted diagonal must be straight.

• At -200 mV, the current should be -1.6…-2.4 μA.

• At +200 mV, the current should be +1.6…+2.4 μA.

Perform a peak test with the dummy cell

For testing the peak measurement, the dummy cell of the 797 VA

Computrace stand is used with the test method Test797_D.mth.

Proceed as follows:

1. Click on

or MAIN WINDOW / Mode / Determination.

2. Click on

or MAIN WINDOW / Window / Working method

specification

to open the WORKING METHOD SPECIFICATIONS

window.

3. Click on

or MAIN WINDOW / File / Load method.

4. Select the method file

Test797_D.mth in the OPEN window and

click

<OK>. The method is loaded into the WORKING METHOD

SPECIFICATIONS

window.

5. Connect the dummy cell at the 797 VA Computrace stand: At-

tach electrode cable AE to clamping screw AE, attach elect-

rode cable RE to clamping screw RE, attach electrode cable WE

to clamping screw WE-D.

6. Click on

or MAIN WINDOW / Window / Monitor to open

the

MONITOR window.

7. Start the measurement by clicking the icon in the MAIN

WINDOW

or the button in the MONITORING win-

dow.

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