Yokogawa PR10 Retractable Assembly - Manual (Page 7)

7
IM 12B6K3-01E-E
3. INSTALLATION
3.1 Unpacking and checking
When you receive the PR10 retractable
fitting it is packed in a cardboard box. Open
the box and check that the model code on
the fitting is the same as the one on the
packing list. Refer to paragraph 2.2 for the
model code. Also check that it is supplied
with the options you ordered. The options
can be delivered in separate boxes. If you
have any problems or questions, contact
your nearest Yokogawa service centre or
sales organization for support. The PR10
retractable fitting has an identification plate
on the protection ring with the full model
code and a serial number.
3.2 Installation site
The PR10 fitting is intended to be used for
in-line measurement. When it is delivered
with an optional ball valve or when it is used
in combination with a locally purchased
ball valve, the process does not need
to be interrupted for maintenance of the
sensor. Mounting location can be in a large
diameter pipeline or a vessel.
3.3 Safety precautions
The PR10 fitting is designed for maximum
safety in operation. For optimum safety
a flanged ball valve is recommended.
Yokogawa does not accept any claims
or penalties on possible damages or
accidents that occur in operation of the
PR10 fitting. The installation of the probe
is to be implemented under the local
safety regulations for pressurized vessels
or pipelines for retraction or insertion. The
instructions given in this manual must be
followed exactly.
3.4 Installation method
It is important to have the point of
measurement in a location that is truly
representing the process composition.
Check whether the specifications of the
sensor fulfill the maximum occurring
process conditions. The fitting has several
optional connection possibilities. Check
that you received the correct size and
type. Install the fitting in a convenient
location for maintenance and calibration.
For maintenance or calibration the probe
will need a space of about 2m for total
retraction (depending on probe length
and optional adapters and/or ball valves).
Installation in a bend of a pipe line is a good
measurement position. When inserting the
PR10 retractable fitting in a perpendicular
position to the process flow, the flow
velocity will put a mechanical force on the
probe. Take care that this force is not too
large. It is recommended to have the PR10
retractable fitting positioned at a 90° angle
into the process stream.
Note: Do not insert the fitting into the
process without the sensor mounted!
The sensor is delivered separately in
a box. Start with the assembly of the
sensor into the probe and follow the
instructions for the preparation of a
new sensor. Refer to paragraph 3.8.
3.5 Assembly of accessories
Optional accessories are (often) delivered in
separate boxes. When an optional ball valve
is ordered, it should be mounted to the
measuring position first. When the ball valve
is in place, the process line is secure.