Operate
6.2 Parameter description
SITRANS VP300 with or without HART
Operating Instructions, 03/2011, A5E01258666-03
97
"3.5.1.3 Test status"
Purpose:
Indicates the test status of the partial stroke test.
Factory setting:
No PST performed
Description:
The following status information can be displayed:
No PST performed
PST OK
PST cancelled
PST failed
"3.5.1.4 Current start position"
Conditions:
A partial stroke test has been performed.
Factory setting:
0.0 %
Display range:
0.0 ... 100.0
Description:
Display of current start position, which can vary around the specified
start position by an amount equivalent to the magnitude of the start
tolerance.
"3.5.1.5 Breakaway time"
Requirements:
A partial stroke test has been performed.
Factory setting:
0.0 s
Display range:
0.0 ... 100.0
Purpose:
Indicates the breakaway time of the lastpartial stroke test.
Description:
Breakaway time is the time that the valve requires until a movement is
discontinued. The breakaway time is measured after a valve
movement of 0.5%.
"3.5.1.6 Stroke time"
Requirements:
A partial stroke test has been performed.
Factory setting:
0.0 s
Display range:
0.0 ... 100.0
Purpose:
Indicates the stroke time of the lastpartial stroke test.
Description:
The stroke time includes the period from the start of the partial stroke
test until the specified stroke amount relative to the start position has
been reached.
