
Transmitter M300 89
© 12 / 11 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M300
Printed in Switzerland 52 121 389
14 Troubleshooting
If the equipment is used in a manner not specified by Mettler-Toledo Thornton, Inc., the protec-
tion provided by the equipment may be impaired.
Review the table below for possible causes of common problems:
Problem PossibleCause
Display is blank.
– No power to M300.
– Blown fuse.
– LCD display contrast set incorrectly.
– Hardware failure.
Incorrect measurement readings.
– Sensor improperly installed.
– Incorrect units multiplier entered.
– Temperature compensation incorrectly set or
disabled.
– Sensor or transmitter needs calibration.
– Sensor or patch cord defective or exceeds
recommended maximum length.
– Hardware failure.
Measurement readings not stable.
– Sensors or cables installed too close to equipment
that generates high level of electrical noise.
– Recommended cable length exceeded.
– Averaging set too low.
– Sensor or patch cord defective.
Displayed a is ashing.
– Setpoint is in alarm condition (setpoint exceeded).
– Alarm, that has been selected (see chapter 8.5.1
“Alarm”), has occurred.
Cannot change menu settings. – User locked out for security reasons.
14.1 ChangingtheFuse
a
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 consumption of the M300 transmitter is too high or a malfunction leads to a
short circuit the fuse will blow. In this case remove the fuse and replace it with one specified
in Section 15 “Accessories and Spare Parts”.
Comentarios a estos manuales