Veris V550 Installation Instructions

1.0 SCOPE

These instructions provide procedures for installing the
V550 Verabar flow sensor. Procedures are given for all
industrial flow measurement applications including
liquid, steam and gas service for both horizontal and
vertical piping configurations.

2.0 RECEIVING INSPECTION

The following tasks should be performed as part of the
receiving inspection procedure:

• Check items received against the packing list.

• Check sensor nameplate for proper model num-

ber, serial number and customer number.

• Verify that the actual pipe diameter matches the
ID stated on the sensor nameplate.

• Check the bullet shaped sensor tube for any
signs of damage. Damage to the sensor tube
may result in erroneous flow readings.

• Check the round cover tube for any damage,
especially axial gouges or scratches. Damage to
the cover tube may prevent the ferrule from
sealing properly.

3.0 SAFETY PRECAUTIONS

The following tasks should be conducted prior to install­ing the Verabar flow sensor:

• Check maximum operating conditions on the flow
sensor nameplate and verify that they exceed the
maximum conditions of the installation. If any
pressure, temperature or flow limits will be
exceeded, consult the factory before proceeding.

• Check that the pipe is depressurized and drained
prior to installation.

Piping Configuration

Table 1. Straight Run Requirements

Verabar V550 (Flanged Spring-Lock)

INSTALLATION INSTRUCTIONS

• The Flanged Spring-Lock Model V550 is
designed for carbon and stainless steel pipes
with a schedule 10 or heavier wall thickness.
The V550 should not be used with PVC, copper,
aluminum, cast iron or thin-walled pipes or ducts.
If there is any question as to the proper
application for a model V550, consult the factory.

4.0 INSTALLATION PREPARATIONS

4.1 Location

For the most accurate flow measurement, a minimum
straight run of pipe is required. Table 1 shows the
minimum straight run requirements.

If longer straight runs are available, position the
Verabar such that the ratio of upstream straight run to
downstream straight run is approximately 4 to 1. If
straight run lengths are less than the values stated in
Table 1, consult the factory for additional accuracy and
location information.

Position straightening vanes such that the end closest
to the Verabar is half way between the Verabar and the
closest upstream configuration. For elbow installations,
mount the Verabar in the same plane as the closest
upstream elbow.

4.2 Orientation

Verify the proper sensor orientation by checking for an
“-H” (horizontal piping) or a “-V” (vertical piping) in the
model number on the Verabar nameplate.

4.2.1 Horizontal Piping

For air or gas installations, mount the Verabar in the
upper 160° of the pipe to allow any condensate to drain
into the pipe (Figure 1). For liquid or steam
installations, mount the Verabar in the lower 160° of the
pipe. This allows any entrained air to bleed back into
the pipe for liquid applications and allows condensate
to collect in the instrument piping for steam
applications.

4.2.2 Vertical Piping

The Verabar may be mounted in any location around
the circumference of the pipe for any vertical piping
applications.

Figure 1. Verabar Orientation in Horizontal Pipe

4.3 DP Transmitter/Local Indicator
Location

When choosing a Verabar location, consider the DP
transmitter/local indicator location:

• The transmitter must be mounted below the
Verabar for liquid and steam applications.

• The transmitter must be mounted above the
Verabar for air and gas applications.

4.4 Installation Drawings and Bill of
Materials

Additional information is available in the Installation
Drawings and Bill of Materials VB-7061 (also on the
VeraData CD). It contains standard and alternate
transmitter locations and a complete bill of materials
based on the fluid type and sensor orientation on the
pipe.

5.0 INSTALLATION PROCEDURE

5.1 Drill Hole in Pipe

• Completely depressurize and drain pipe prior to
installation of the Verabar.

• Mark the location of the hole through which the
Verabar will be mounted. Use a center punch to
mark the hole to prevent the drill bit from walking
on the pipe.

• Drill the pipe with the proper sized hole per the
following table:

Sensor Size Hole Dia

V550-05 1/2" (13mm)
V550-10 1” (25mm)
V550-15 1-1/2” (38mm)

• Deburr the hole on the inside of the pipe.

5.2 Weld Mounting Flange to Pipe

• With the follower and packing rings already in

place (factory assembled), insert the sensor into
the Spring-Lock body (Figure 3). Loosely bolt
together (hand tight) the sensor, gasket and
mounting flange. Insert the assembly until the tip
of the sensor hits the opposite side of the pipe.
Align the head of the sensor so that the arrow
labeled “flow” on the head is in the direction of
the flow to within 3°. The contour of the weld
coupling should match the contour of the pipe.
Check that the bottom of the weld coupling is in
contact with the pipe wall.