KMS-2/Exia Transmitter
Installation and Operating Manual
ATEX
Page 12 of 13
KMS-2/Exia IOM Rev C 14/06/2018
Fault analysis Sheet
Problem Possible Fault Action
Zero current eg. 0mA
Supply Voltage to low < 8V Check voltage and adjust
accordingly
Supply Connections reversed Swap supply cables
Cables/Connecting circuit faulty Rectify as required
Faulty Unit Consult Factory.
Current Greater than 22mA Supply voltage to high > 28V Adjust voltage to less than 28V
Output at
3.8mA (Low level)
Float damaged (sunk) Fit new float
Chamber empty Open check valves
Continual reading of either
3.58mA Downscale
22mA Upscale
Float magnetic field not being
sensed
Check gap distance between
chamber and transmitter
Float Under magnetised
Check with spare float if
available
Output static at a particular level
Float stuck or damaged
Check against visual display if
fitted. Check float condition
Residual magnetic interference
Run magnet along full length of
probe, Consult Factory.
External magnetic interference
Check for external magnetic
devices in vicinity.
4-20mA not proportional to
liquid level
“XXXX” marks not in line with
vessel connections
Realign transmitter marks
correctly
S.G range of float incorrect for
media type
Check S.G etched on float
against media S.G
Table 3
Fault Analysis
Maintenance
The unit contains no user serviceable parts; therefore no routine maintenance is required.
Dependent on model or application:
For coated options:
•
Where the case of the device may be subjected to impact or friction, periodic examination is
required to ensure that the integrity of the stove enamelled finish is maintained.
For Immersion Applications
•
The sensor tube must be kept clean to prevent the float “sticking”.
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