
Transmitter O
2
M300 57
© 05/07 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter O
2
M300
Printed in Switzerland 52 121 305
14.1 Warning- and alarmlist
Warnings Description
Warning O
2
Slope > 90nA Slope too big
Warning O
2
Slope < 35nA Slope too small
Warning O
2
ZeroPt > 0.3nA Zero offset too big
Warning O
2
ZeroPt < –0.3nA Zero offset too small
Alarms Description
Watchdog time-out SW/System fault
Error O
2
Slope > 110 nA Slope too big
Error O
2
Slope < 30 nA Slope too small
Error O
2
ZeroPt > 0.6 nA Zero offset too big
Error O
2
ZeroPt < –0.6nA Zero offset too small
14.2 Changing the fuse
Make sure that the mains cable is unplugged before changing the fuse. This operation should
only be carried out by personnel familiar with the transmitter and who are qualified for such
work.
If the power sonsumption of the M300 transmitter is too high or a manipulation leads to a short
circuit the fuse will blow. In this case remove the fuse and replace it with one specified in
Chapter 16.
15 Accessories and spare parts
Please contact your local METTLER TOLEDO Sales office or representative for details on available
accessories and spare parts.
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