Volume Booster with a fixed minimum dead band is designed to substantially increase stroking peeds of large actuators. Actuators retain their normal slow and stable responses as long as their signal fluctuations remain within the dead band limits that can be set on the booster.
SPECIFICATION :
Max Supply Pressure
: 10 Kg/Cm² (150 Psig)
Max Signal. Output Pressure
: 7 Kg/Cm² (100 Psig)
Signal/ Output Pressure
: 1:1
INPUT
: 0.2 – 0.6 kg/cm² (Split Range)
Maximum Cv
: 1.02
In/ Output Connection
: 1/4" NPT / 1/4" NPT
Signal Connection
: 1/4" NPT
Linearity
: ±1% (F.S.)
Hysteresis
: 1%
Ambient Temp
: -20~70ºC (-4~158ºF)
Material
: Aluminum Die casting / Stainless Steel 316
DESIGN AND PERFORMANCE FEATURES :
Quick Response :Provides large volume for rapid stroking of the actuator when
confronted with input signals exceeding preset magnitude and rate capabilities thereby reducing the Stroking period.
Greater Stability :Allows normally slow actuator response to the small or slow signal changes produced by usual process variations.
Low Air Consumption :Soft seats provide tight shutoff to prevent unnecessary air consumption.
Accuracy: Maintains correct actuator position at high stroking speeds.
OPERATION :
During steady process conditions when Controller output variations are small, the controller or valve positioner signal to the booster input will be registered through the bypass valve directly to the actuator. Both booster ports remain tightly shut; soft seats preventing unnecessary air consumption.
Because of the bypass valve restriction, larger or faster signal changes will be registered sooner on the booster input than in the booster output chamber connected to the actuator. When the differential pressure exceeds the dead band value of the booster, the diaphragm assembly will move so as to open one, or the other, booster port and allow rapid actuator pressure change. When the controller or positioner senses that the corrective action is completed, the booster closes and lets the actuator return to normal operation.
The Company’s policy is one of continuous product improvement and the right is reserved to modify the specifications contained herein without no
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