Vaisala DM500 - Manual (Page 70)

User's Guide ______________________________________________________________________
68 __________________________________________________________________ M210205EN-D
The serial output command R shows frozen values. You can cancel
the testing sequence by pressing the
CANCEL .
6. When the test is completed, you see the following display:
7. Press EXIT to return to the main view.
The following factors affect the cooling capacity:
- Temperature of the environment
- Temperature of the cooling water and
- Gas flow rate of the sample.
Please, check that these settings are correct, see chapter Setting up for
Operation, page 35. The graphs on pages 27 and 29 show the lowest
achievable sensor temperatures. In addition, to obtain correct results,
the test should be started with the system at equilibrium with room
temperature.
Error History
The error history shows on the display six last shown error messages.
1. Open MENU : press .
2. Select ► Measuring , press .
3. Select ► Self diagnostics , press .
4. Select Error history .
5. Press SHOW to see the last shown error display. Press NEXT to
see the earlier ones.
6. To clear the error history, press CLEAR .
7. Press EXIT to return to the main view.