Samson 3730 Series Operating Instructions

12 EB 8389-1S EN
Description
Table 1: Diagnostic functions and test analysis
Diagnostic functions
Control
valve
On/off
valve Assessment See section
Monitoring
Data logger • • Depending on trigger status
selected
u 3 on page 21
Valve signature •
U
− Change in friction
− Supply pressure
− Defective actuator springs
− Pneumatic leakage
u 4 on page 27
On/off valve – • − Breakaway time
− Transit time
− Valve end position
u 5 on page 37
Valve position
histogram
•
U
− Change in manipulated variable
range
− Manipulated variable range
u 6 on page 41
Set point deviation
histogram
• • − Manipulated variable range
limitation
− Seat leakage
− Positioner-valve linkage
− Average set point deviation
u 7 on page 44
Cycle counter
histogram
• • − Packing leakage
− Dynamic stress factor
u 8 on page 49
Leakage sensor • • − Seat leakage u 9 on page 53
Course of end
position
• • − Course of end position
− Zero shift
u 10 on page 67
Dynamic tests
Valve dead band • • − Dead band u 11 on page 69
Partial stroke test
(PST)
• • − Overshooting
− Dead time
− T86
− Settling time
u 12 on page 73
Full stroke test (FST) • • − Overshooting
− Dead time
− T86
− Settling time
u
13 on page 83
• Full scope of functions
U Function is performed, but not analyzed
– Function is not performed
Description

Samson 3730 Series Specifications

General

Brand	Samson
Model	3730 Series
Category	Valve Positioners
Language	English