© 2018 Baker Hughes, a GE company, LLC. All rights reserved.
74 |
=
BHGE
Table 11: Operational Specifications
Accuracy
+/- 0.5% (t/-0. 10% or less) Full Span
Hysteresis and Deadband
+/- 0.3% Full Span
Repeatability
+/- 0.3% Full Span
Conformity
+/- 0.5% Full Span
Start-Up Drift
Less than 0.02% in first hour
Long Term Drift
Less than 0.003% per month
Position Travel Limits
Rotary: 18 - 140°
Reciprocating: 0.25” - 2.5“ (6 mm - 64 mm)
Note:
Above 2.5” (64 mm) consult factory for
mounting instructions.
Position Auto Tune
SVI II ESD performs automatic determina-
tion of the optimal valve position control
parameters. In addition to P, I, D, the posi-
tion algorithm uses damping, symmetry for
exhaust and fill time constants, dead zone
and magnitude characterization parame-
ters. Auto Tune is optimized for 5% step
changes with negligible overshoot. After
the Auto Tune process is completed, you
can further adjust the positioner tuning
parameters to more conservative or to
more responsive values.
Proportional gain: 0 to 5, displayed as 0 to
5000
Integral time: 0 to 100 seconds - displayed
as 0 to 1000 (1/10s)
Derivative time: 0 to 200 milliseconds
Dead Zone: 0 to +/-5% (0 to 10% deadband)
Padj: +/- 3000 (depends on P)
Beta (non-linear gain factor): -9 to +9
Stroking Time: 0 to 250 seconds
Position compensation coefficient: 1 to 20
Boost: 0 to 20
Start Up Time (from no power)
Less than 200 mS
Minimum current to maintain HART
®
3.0 mA
Содержание Masoneilan SVI II ESD
Страница 4: ...This page intentionally left blank...
Страница 8: ...This page intentionally left blank...
Страница 20: ...This page intentionally left blank...
Страница 72: ...This page intentionally left blank...
Страница 92: ...This page intentionally left blank...