11.2.4.9 Diagnostic value '11.LEAK - Leakage test'
Condition The positioner is initialized and in manual mode (MAN).
Display range: ● -
● 0.0 ... 100.0
Purpose: You can use this diagnostics parameter to read the last test result or
start an offline leakage test with which you can detect leakages in
the actuator or in the pipe installation. Display is percent stroke per
minute referred to the total stroke. A test result originates from one
of the following options:
● Function '11.LEAK' has already been carried out.
● Leakage test was already carried out during initialization, see
procedure of RUN 3 in section Sequence of automatic initializa‐
tion (Page 109).
● 'Offline leakage test' function was already executed by a HOST
system.
"-" in the display can have the following causes:
● A leakage test has not yet been carried out.
● Resetting to the factory settings was carried out using
the '50.PRST' Preset (Page 160) > ALL parameter.
● Positioner is not initialized.
How to start the test
1. Move the actuator to the position at which you wish to start the
test.
2. In 'Diagnostics' mode, go to the '11.LEAK' diagnostic value as
described in section Display of diagnostics values (Page 212).
3. Start the function by pressing the button for at least 5 sec‐
onds.
Description: 'Strt' is output in the display. The function is started after 5 seconds.
'tESt' and the current position of the actuator (actual value) are then
displayed alternately for one minute.
After one minute, the display shows the difference in the actuator
position before and after the test. This means: the actuator position
has changed by the displayed value in one minute.
Diagnostics and troubleshooting
11.2 Diagnostics
SIPART PS2 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E00074631-AE 217
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