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SVI Features and Functions
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Precision valve positioning control
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Advanced valve diagnostics
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Automatic setup and tuning
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Local operation/calibration/configuration using optional explosion proof pushbuttons and
digital display
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Remote operation/calibration/configuration/diagnostics using ValVue software, or a hand-
held with SVI Device Description (DD).
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Two-way data communication using industry-standard HART protocol
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User-configurable tight shutoff adjustment
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Optional PID controller with remote set point and process variable inputs
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User-adjustable response times
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Direct or reverse acting operation
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Compatible with air-to-close or air-to-open actuators
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Span and Zero configurable for split-range operation
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Local operation functions include:
- Calibrate valve stroke range, tight shutoff point, position limits
- Display and/or set parameters for valve configuration
- NORMAL OPERATE valve in manual mode or 4-20 mA mode
- Select characterization (linear, equal percentage 50, equal percentage 30, quick opening,
or custom)
- Display/clear fault codes
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Display valve position
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Display faults
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Remote operation functions include all of the above plus:
- Display totalized stem travel, number of valve cycles and other data useful for predicting
valve life
- Run valve diagnostics
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