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Masoneilan SVI II ESD Installation and Maintenance Manual
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© 2017 Baker Hughes, a GE company, LLC. All rights reserved.
Connecting the Tubing and Air Supply
NOTE
It is advisable to tube and apply the air supply to the SVI II ESD
before connecting the electrical input signal to power it up.
NOTE
For small actuators it may be necessary to use 1/8" tubing for
Autotune to work properly.
This section describes the process for connecting the tubing and air supply to a single acting
PST controller.
Pneumatic Connections
The SVI II ESD is intended for use with industrial compressed air or natural gas systems only
that meet the requirements of ISA standard 7.3. Supply pressure must not exceed 120 psi. A
coalescing filter can be used to assure that the supply air is sufficiently free of oil, water, and
particulate contaminants. Ensure that an adequate pressure relief provision is installed when
the application of system supply pressure could cause peripheral equipment to malfunction.
Installation must be in accordance with local and national compressed air and
instrumentation codes. Table 7 provides the pneumatic connections and air supply
requirements for the SVI II ESD.
Table 7 Pneumatic Connections/Air Supply Requirements
Recommended Piping
Inlet/Outlet
1/2” stainless steel or PVC tubing. The length of tubing between
the SVI II ESD and the valve shall be kept as short as possible
and free of kinks
Instrument Air Pressure 30 - 120 psi (2.07 - 8.27 bar) (207 - 827 kPa)
Dew Point
At least 18° F (-8° C) below minimum anticipated ambient tem-
perature
Particulate Matter
Filtered to 5 microns
Oil Content
Less than 1 ppm w/w
Contaminants
Free of all corrosive contaminants
Содержание SVI II ESD
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