GE Baker Hughes Masoneilan SVI FF Installation And Operation Manual page 99

Air Supply
Action
Supply Pressure
Air Delivery - Single Acting Relay
Air Capacity (flow coefficient)
Air Consumption
Air Supply Failure
Loss of Input Signal
Output Pressure
© 2019 Baker Hughes, a GE company, LLC. All rights reserved.
Table 16 High Flow Pneumatics Single Acting High Flow
Dry, oil-free, 5 micron filtered, filtered and regulated air and sweet
natural gas (See ISA S7.3)
Direct Acting
20 -150 psi max. (1.4 - 10.3 bar)
Regulate 5 - 10 psi (.345 bar - .69 bar) above actuator spring range. Do
not exceed actuator rating.
39.0 scf/min (1104 L/min) at 30 psi (2.1 bar) supply
70.6 scf/min (2000 L/min) at 60 psi (4.2 bar) supply
102.0 scf/min (2888 L/min) at 90 psi (6.3 bar) supply
134.0 scf/min (3794 L/min) at 120 psi (8.4 bar) supply
Loading
Venting
0.20 scf/min (5.8 L/min) at 30 psi (2.1 bar) supply
0.45 scf/min (12.6 L/min) at 60 psi (4.2 bar) supply
0.65 scf/min (18.3 L/min) at 90 psi (6.3 bar) supply
0.84 scf/min (23.9 L/min) at 120 psi (8.4 bar) supply
Single Acting Relay
On supply failure the actuator output drops. Some overshoot may occur
when air pressure returns after a period without air supply pressure.
Always set control set point to 0%, and put the process control system
in manual, for smooth recovery from air supply failure.
Output drops to low pressure.
0-150 psi (10.3 bar) max.
C
v = 2.2
C
v = 2.2
Masoneilan SVI FF Instruction Manual
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