Dresser Masoneilan SVI II AP Schnellstart-Handbuch - Seite 11
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M M a a s s o o n n e e i i l l a a n n D D r r e e s s s s e e r r
Necessary Precautions
Necessary Precautions
Installing the
Installing the
SVI II AP
SVI II AP
Remote
Remote
Position
Position
Sensor
Sensor
T T o avoid injury
o avoid injury or the process
or the process being affected when installing or
replacing a positioner on a con
replacing a positioner on a control valve, ensure that:
If the valve is located in a hazardous area make
If the valve is located in a hazardous area make
sure the area has been certified as "safe" or that all
sure the area has been
electrical power to the area has been disconnected
electrical power to the area has
before removing any covers or disconnecting any
before removing any covers or disconnecting any
leads.
leads.
Shut off air supply to the actuator and to any valve
Shut off air supply to the actuator and to any
mounted equipment.
mounted equipment.
Ensure the valve is isolated from the
Ensure the valve is isolated from the process by
either shutting off the process or using bypass
either shutting off the process or using bypass
valves for isolation. Tag shutoff or bypass valves
valves for isolation. T
guard against a "turn-on" while work is in progress.
guard against a "turn-on" while work is in progress.
Bleed air from actuator and check
Bleed air from actuator and check that valve is in
unenergized position.
unenergized position.
It is now safe to disconnect and remove any valve mounted equipment
It is now safe to disconnect and remove any valve mounted equipment
that is being replaced.
that is being replaced.
For the procedure to mount rotary and reciprocating valves, refer to the
For the procedure to mount rotary and reciprocating valves, refer to the
Mounting Instructions contained in the valve's Mounting Box
Mounting Instructions contained in the valve's Mounting Box kit.
An option that is available for the SVI II AP is
An option that is available for the SVI II AP is the Remote Position
Sensor. . The Remote Position
Sensor
The Remote Position Sensor
sensing device, that is connected electrically to an SVI II AP valve
sensing device, that is connected electrically to an
positioner. . It is used as
positioner
It is used as position feedback in
mounting of an SVI II AP to a valve actuator is not practical due,
mounting of an SVI II AP to a valve actuator
typically but not limited to, extreme vibration, heat or radiation.
typically but not limited to, extreme vibration, heat or radiation.
The Remote Position Sensor is a potentiometer located in an enclosure
The Remote Position Sensor is a potentiometer located in an enclosure
which can be mounted on a valve or damper to indicate stem position
which can be mounted on a
when connected to a suit
when connected to a suitable receiver
provided on a screw terminal block to interconnect to the receiving
provided on a screw terminal block
device.
device.
The SVI II AP Remote Position Sensor is suitable for installation
The SVI II AP Remote
outdoors in an industrial environmen
outdoors in
an industrial environment. t. Mounting kit
permit mounting on a variety of valves.
permit mounting on a variety of valves.
Do not remove the instrument cover or connect to an electrical circuit in
Do not remove the instrument cover or
a Hazardous Area unless the power
a Hazardous Area unless the power is disconnected.
being affected when installing or
trol valve, ensure that:
ag shutoff or bypass valves to to
Sensor, is a remotely m
, is a remotely mounted position-
position feedback in applications where d
valve or damper to indicate stem position
able receiver. . There is a three wire con
There is a three wire connection
to interconnect to the receiving
Position Sensor is suitable for installation
Mounting kits are provided to
connect to an electrical circuit in
is disconnected.
4 4
S S V V I I I I I I A A P P Q Q u u i i c c k k S S t t a a r r t t G G u u i i d d e e
certified as "safe" or that all
been disconnected
process by
that valve is in its its
kit.
the Remote Position
ounted position-
SVI II AP valve
applications where direct
is not practical due,
s are provided to
valve
irect
nection