OZONE ANALYZER BMT 965 Manual, Rev. 01/2024
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34
Low Pressure Error
This instrument shows
Err: Low Press.
This error is shown, if pressure is below 0.2 bar abs. Below this threshold, measurement accuracy
is degraded. The Error Relay is set to error.
EEPROM Error
This error shows that there is something wrong with the internal non-volatile memory. Since this
memory stores important calibration data, the instrument should be thoroughly checked by BMT
MESSTECHNIK (s. also Chapter Troubleshooting). The Error Relay indicates an error.
SD Card Warning
This indicates that an error occurred during a write operation to an internal log. Accuracy is not
impaired by this warning, so all outputs remain in the normal position.
11 Event- and Error-Log
These two logs are stored by the BMT 965 on the internal SD card and document important events
and errors. Memory capacity is not limited. New entries are appended as they arrive. Both logs can
be read out via USB to a computer and can be copied directly to a flash drive.
The program BMT 965 Link can be used to:
- Show logs on a computer which is connected to a BMT 965
- Show logs that were copied to a flash drive or were sent via E-Mail (offline operation)
The name of the logs contains the serial number of the instrument. Each entry in these logs has a
time stamp, which means that date and time are recorded with a resolution of 1 s. The user is
responsible for setting the internal clock, or comparing its time with local time for correct inter-
pretation of the log entries. Life expectancy of the battery is 10 years or more. An empty battery
will only result in erroneous time stamps in the logs.
The Error-Log documents all errors described in chapter Error Handling with date and time. A
second entry protocols the end of a particular error.
The Event-Log documents the following events and additional data:
Switching on of the BMT 965, cuvette pressure at this time
Switching off of the BMT 965, temperature at switch off
Zeroing, dirtiness of cuvette in %
High Alarm, High Alarm Limit
High Alarm cleared, High Alarm Limit
Low Alarm, Low Alarm Limit
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