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Reference Manual
IP2048/RM, Rev AA
Section 5: Service and Troubleshooting
February 2015
(Press the red button at any time to re-display the “diAg” menu option, and pressing
it again restores the PV display.)
2. Press the green button
to get to the next diagnostic data, “LEUEL”.
This is the level measurement in base units that the transmitter has calculated based
upon the bottom reference and the distance measured, regardless of the duty chosen
for the instrument.
3. Press the green button
to get to the next diagnostic data, “Echo. S”.
This is the echo size being received on a scale of 0 to 100. It is recommended that a
value greater than 10 be achieved.
4. Press the green button
to get to the next diagnostic data, “Echo. n”.
This is the number of echoes being received and can be an indicator of the data being
processed by the transmitter. A thorough understanding of ultrasonic level systems is
required to interpret this data.
5. Press the green button
to get to the next diagnostic data, “F”.
This is the frequency at which the transmitter is operating, and should read between 49
and 58 kHz.
6. Press the green button
to get to the next diagnostic data, “t”.
This is the temperature being recorded by the integral temperature sensor (or remote
temperature sensor, if fitted) and is being used by the transmitter to calculate the
distance-to-target.
7. Press the green button
and then the blue button to change to the
PV display.
5.3.3 Loop test
Screen display: tESt
The transmitter can cycle through the programmed operating range without any change in the
liquid level, causing the current output to cycle through a normal operation (and energize/de-
energize relays on the MSP400RH).
The transmitter can be programmed to fix the loop current at any value between 4 and 20 mA
to allow testing of any other loop or control instruments.
To enter the loop test menu from the PV display, press the blue button
to display “diAg” and
then press-and-hold the blue button
for at two seconds to display “tESt”.
Note
See Figure C-2 on page 78 for a map of the diagnostics menu structure.
Cycle function
Screen display: CyCLE
1. After entering the “tESt” menu (see above), press the green button
to get to the
“CyCLE” menu option.