Masoneilan SVI II AP Installation and Maintenance ... - GE Energy

GE Oil and Gas
SVI II AP Instruction Manual
Connecting the Tubing and Air Supply
The last step in hardware installation for the SVI II AP is to connect the air supply to the
positioner. This section describes the process for connecting the tubing and air supply to
a single and double acting positioner.
WARNING
Isolate the valve from the process and disconnect air tubing
from the positioner. Disconnect air fully to avoid injury or
process damage.
1. Install the tubing to the air supply port, S(arrow only for High Flow).
2. For a single acting actuator - pipe the outbound air from the output pressure port (I)
to the actuator (arrow only for High Flow).
3. For a double acting actuator - pipe output pressure port one (I) for one side of the
actuator and output pressure port two (II) for the other side of the actuator
(arrow only for High Flow).
4. Air supply:
Supply pressure for single acting SVI II AP and AP High Flow:
20 -100 psi (1.4 - 6.9 bar) (138 - 690 kPa)
Supply pressure for double acting SVI II AP:
25 - 150 psi (1.73 - 10.3 bar) (172 - 1030 kPa)
Minimum tubing diameter 1⁄4" (6mm x 4mm)
NOTE
The SVI II AP Digital Valve Positioner is designed to operate
with clean, dry, oil-free, instrument grade air to ANSI-ISA-57.3
1975 (R1981) or ISA-S7.3-1975 (R1981) or with a sweet
natural gas supply (SVI II AP models SVI II AP-2 through SVI
II AP-3).
Table 6
Air Supply Requirements
Dew Point
Particulate Matter
Oil Content
Contaminants
At least 18° F (-7° C) below minimum anticipated ambient temperature
Filtered to 5 microns
Less than 1 ppm w/w
Free of all corrosive contaminants
CAUTION
The SVI II AP High Flow digital valve positioner cannot be
placed in parallel with another volume booster. Contact the
factory for further instructions regarding configuration with
boosters as well as other non-standard configurations.
54