PP Systems EGM-4, Руководство оператора

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Diagnostics and Initialisation
EGM-4 Operator's Manual – Version 4.19
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Diagnostics and Initialisation
The EGM-4 has a diagnostics and “Initialisation” feature built in for troubleshooting and for
setting system controls and calibration back to factory default.
It is important to allow the
EGM-4 to warm up for at least 30 minutes prior to checking system diagnostics . To
check system diagnostics and to reinitialize the EGM-4, press key 0 with the Main Menu
displayed. The following message is displayed:
Diagnostics
Press key 1 for system diagnostics and the following will be displayed:
Where:
CR:44049 Reading from 16 bit A/D converter for CO
2
detector. The CR value should read
approximately 35000-45000 for CO
2
concentration around 400 ppm.
Z:46132 Reading from 16 bit A/D converter during last Auto-Zero sequence. The A/D
value for Z should read approximately 40000-50000
if fresh soda lime is
present in the absorber column . The Z value should always be greater than
the CR value.
0/Z Press key 0 to perform an Auto-Zero.,
Press Key N to return to the Main Menu.
Initialisation
This feature is available in the event of a bad or incorrect calibration, if a new EPROM is
installed with a new “Checksum” value, or if the system locks up. Press key 2 to reinitialize
the EGM-4.
Very Important. Before initializing the EGM-4, you must dump all stored
records to your PC or they will be lost for good. All records will be cleared from
system memory during Initialisation.
After pressing key 2, you will be presented with ???? on the display. At this point, enter the
code 0462. This will follow with a “Database Cleared” message before returning you to the
Main Menu. At this point, your system will be returned to its original factory default conditions
(i.e. calibration, etc.). The EGM-4 system settings will automatically revert to:
CO
2
Calibration
Concentration
2000 ppm
Recording Type Manual. No averaging of data.
Zero Type Automatic
Checksum 123456
Analog Voltage
Output 5
Memory Reset to start of memory.
1:DIAGNOSTICS
2:INTIALISE
CR:44049 Z: 46132
0/Z: ZERO N: QUIT