Technical Specifications

ValVue Digital Communications Software Ver. 2.80
642
GE Oil & Gas
 One/two way - If two way is selected, the step tests are
performed both increasing position and decreasing
position.
Figure 12 Step Response Test
 Extended Actuator Signature: An extended actuator signature
is like a standard actuator signature (pressure vs position
hysteresis curve) except that the starting and ending position
can be specified.
The Extended Actuator Signature slowly ramps the pressure to
the actuator up and down over a user selected position range
and measures the position vs pressure. The signature is useful
for determining valve friction and for identifying performance
problems at specific valve positions.
 Starting Position
 Ending Position
 Speed (see description of speed in Response Time Test)