Fault Finding - ABB KSONIK MICRO Operation & Instruction Manual

13.0 FAULT FINDING

There are three categories of possible faults:
• The malfunction of the instrument
• Loss of echo and
• Wrong reading.
The biggest problem is to identify the malfunction. If the instrument is not working satisfactorily then remove the trans-
mitter to the workshop. Connect the power and aim the KSONIK MICRO to a wall about 2.00m away, making sure that
it is perpendicular to the wall. Now reset the instrument by the factory reset prompt. KSONIK MICRO should now read
2.00m. If it does not read the above then there is a malfunction with the instrument and it should be returned for repair.
If the above works and it still does not work in the field then there are many possible problems. Please check below for
possibilities.
Loss of Echo
Check that the KSONIK MICRO is not being used on a solid or agitated surface, as agitated surfaces and solids do not
reflect as much signal as flat surfaces. Aim the Transducer straight down. Check if the Transducer face is dirty.
Wrong Reading, Always Reading Close to the Transducer
Do not reduce the blanking distance below 0.50 m / 1.64 ft unless consultation has been made with K-TEK. Electrical
noise can cause this error. Remove noise.
Wrong Reading, Anywhere in Tank
Check to see if there is a reflection from the wall. Please note that a piece of wire across a tank can be a big enough
obstruction for an echo to be accepted.
Are the parameters correct? Reset to factory default and check that KSONIK MICRO reads correctly. If the factory set-
tings are OK then your parameters need changing. Re-check them with a tape measure.
Wrong Reading, Erratic
Reduce Rate of Change. Not many levels move faster than 1 meter/minute.
Make sure the application is set up correctly. On liquid applications it is very important that the liquid application is se-
lected. Solid applications are only used for objects or substances being measured, which are in a solid form.
Wrong Reading, Slow
Increase Rate of Change.
26 KSONIK MICRO Ultrasonic Level Transmitter | Operation instruction manual