Michell Instruments XZR500ST, Руководство пользователя

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XZR500 User’s Manual
Michell Instruments 39
MAINTENANCE
4.6 Error Messages
This section explains the most common error messages that could appear during
operation:
O
2
Concentration
Storing fault / Value
1 .
This message appears when the content of the EEPROM is corrupted. This problem can
occur when the microcontroller card is replaced with a non-compatible version. All the
adjustment parameters are lost. Press RESET ( Figure 7) to cancel the message.
• If the message does not disappear after RESET has been activated check
the microcontroller card (see Section 4.4).
Furnace temperature
Low alarm / Value
2.
The message “Low alarm” alternates every 2 seconds with the value of the temperature
measured. It will appear when the furnace temperature is 20°C below the set temperature.
Probable cause(s):
• The analyzer was just powered up so the furnace is warming up.
Wait until the right temperature is reached.
• There is a short-circuit between the thermocouple’s threads, causing the
analyzer to measure the temperature of the short-circuit instead of the
furnace temperature.
Check the thermocouple threads to make sure they are not short-circuiting.
• If the red LED (heating indicator) is lit continuously, the furnace is under-
powered.
Verify the analyzer’s power supply voltage.
• Faulty furnace.