Metrohm 757 VA Computrace - Manual (Page 9)

Table of contents
757 VA Computrace – Software
VII
7.5 Determinations ................................................................................. 141
Load a determination................................................................. 141
Save a determination ................................................................. 141
Automatically save determinations ............................................ 141
Perform a determination ............................................................ 141
Perform a test determination with the Pb test method .............. 142
Perform determinations using the
813 Compact Autosampler........................................................ 143
Recalculate an existing determination....................................... 144
Print determination results and curves ...................................... 145
7.6 Standard addition technique.......................................................... 146
Use manual standard addition without solution exchange ....... 146
Use manual standard addition with solution exchange ............ 147
Use automatic standard addition .............................................. 148
7.7 Calibration curve technique........................................................... 150
Record calibration curve manually by adding
standard solution ....................................................................... 150
Record calibration curve manually with solution exchange ...... 151
Record calibration curve automatically...................................... 152
Measure a sample using a calibration curve............................. 153
7.8 Work with film electrodes............................................................... 155
Deposit a mercury film ............................................................... 155
Remove a mercury film .............................................................. 155
7.9 Diagnostic procedures.................................................................... 156
Check the purging ..................................................................... 156
Check the stirring ....................................................................... 156
Check the MME.......................................................................... 156
Perform a linearity test with the dummy cell .............................. 157
Perform a peak test with the dummy cell .................................. 158
Perform a GLP test..................................................................... 159
8 Troubleshooting
......................................................................
161
8.1 General procedure for error messages........................................ 161
8.2 Connection problems...................................................................... 161
Error message "Could not start the embedded system" ........... 161
Error message "Cannot reach the hardware" ............................ 161
8.3 Software problems .......................................................................... 162
Error message "No access to software" .................................... 162
Error message "The file 'ecousb.sys' is needed" ....................... 162
Wrong language in Help ............................................................ 162
8.4 Dosimat problems............................................................................ 162
Dosimat does not work .............................................................. 162
Irreproducible standard additions with 765 Dosimat................. 163
Wrong volume display with Dosimat ......................................... 163