KMS-2/Exia/Exd Transmitter
Installation and Operating Manual
Page 11 of 16 KMS-2:Exia/Exd IOM
Rev H 18/05/10
ATEX
tanks etc. (EPL Ga), the probe shall be installed in accordance with IEC 60079-26, [i.e. in a
separate ventilated pocket and/or fed from an I.S. supply].
FAULT ANALYSIS SHEET
Problem
Possible Fault
Action
Supply Voltage to low
Check voltage and adjust
accordingly
Supply Connections reversed Swap supply cables
Cables/Connecting circuit
faulty
Rectify as required
Zero reading i.e. 0mA
Faulty Unit
Consult Technical Sales
Reading Greater than 22mA
Supply voltage to high
Adjust voltage to less than
28V
Float damaged (sunk)
Fit new float
Continual Reading of
3.8mA (alarm)
Chamber empty
Open check valves
Float magnetic field not being
sensed
Check gap distance between
chamber and transmitter
Unit incorrectly calibrated
Carry out calibration
procedure
Continual reading of
22mA(Alarm)
Float Under magnetised
Check with spare float if
available
Float stuck or damaged
Check against visual display
if fitted. Check float condition
Output static at a particular
level
External magnetic
interference
Check for external magnetic
devices in vicinity
“XXXX” marks not inline with
vessel connections
Realign transmitter marks
correctly
4-20mA not proportional to
liquid level
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.
•
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.
•
When used in immersion applications the sensor tube must be kept clean to prevent the float
“sticking”.
