Glossary
June 2017
Instruction Manual
D103176X012
71
Travel Limit
A setup parameter that defines the maximum
allowable travel (in percent of ranged travel) for
the valve. During operation, the travel target will
not exceed this limit. There are two travel limits:
high and low. Typically the travel limit low will be
used to keep the valve from going completely
closed.
Travel Range
Travel, in percent of calibrated travel, that
corresponds to the input range.
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 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 rearm
periodically. If the microprocessor is unable to
rearm the timer, the instrument goes through
reset.
Zero Control Signal
A setup parameter that determines whether the
valve is fully open or fully closed when the input
signal is 0%.