GE SVI II AP Quick Start Manual page 63

Table 14: High Flow Pneumatics Single Acting High Flow
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
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Dry, oil-free, 5 micron filtered air (See ISA S7.3)
Direct Acting
20 -100 psi max. (1.4 - 6.9 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
Loading CV = 2.2
Venting CV = 2.2
0.28 scf/min. (8.0 sl/min) at 30 psi (2.1 bar) supply
0.35 scf/min. (10.5 sl/min) at 45 psi (3.1bar) supply
Single Acting Relay
On supply failure the actuator output drops. Some over-
shoot 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 bar) max
. Masoneilan SVI II AP Digital Positioner Quick Start Guide =| 63