Glossary
September 2010
299
Travel
Movement of the valve stem or shaft which
changes the amount the valve is open or closed.
Travel Sensor
A device within the FIELDVUE instrument that
senses valve stem or shaft movement.
Tuning
The adjustment of control terms or parameter
values to produce a desired control effect.
Tuning Set
Preset values that identify gain and rate settings
for a FIELDVUE instrument. The tuning set and
supply pressure together determine an
instrument’s response to input signal changes.
Watch Dog Timer
A timer that the microprocessor must pulse
periodically. If the microprocessor is unable to
pulse the timer, the instrument shuts down.
Zero Power Condition
The position of the valve (open or closed) when
the electrical segment power to the instrument is
removed. Zero Power Condition (ZPC) is
determined by relay and actuator action where:
for Relay A and C, Port A will be at atmosphere
pressure, and if double-acting, Port B will be at
supply pressure. For Relay B, Port B will be at
supply pressure.
G
Glossary
Содержание FIELDVUE DVC6200f
Страница 42: ...DVC6200f Digital Valve Controller November 2010 30 4 ...
Страница 60: ...DVC6200f Digital Valve Controller November 2010 48 4 ...
Страница 108: ...DVC6200f Digital Valve Controller November 2010 96 4 ...
Страница 122: ...DVC6200f Digital Valve Controller November 2010 110 4 ...
Страница 188: ...DVC6200f Digital Valve Controller November 2010 176 4 ...
Страница 200: ...DVC6200f Digital Valve Controller November 2010 188 4 ...
Страница 216: ...DVC6200f Digital Valve Controller November 2010 204 5 ...
Страница 250: ...DVC6200f Digital Valve Controller November 2010 238 8 ...
Страница 251: ...Principle of Operation November 2010 239 A A Appendix A Principle of Operation Digital Valve Controller Operation 240 A ...
Страница 254: ...DVC6200f Digital Valve Controller November 2010 242 A ...
Страница 284: ...DVC6200f Digital Valve Controller November 2010 272 D ...
Страница 290: ...DVC6200f Digital Valve Controller November 2010 278 E ...
Страница 308: ...DVC6200f Digital Valve Controller November 2010 296 F ...
Страница 312: ...DVC6200f Digital Valve Controller September 2010 300 Notes G Glossary ...
Страница 324: ...DVC6200f Digital Valve Controller November 2010 312 F Index ...
Страница 325: ...This page intentionally left blank ...