Veris V400S Installation Instructions

Verabar V400S (Single Rod)

1.0 SCOPE

These instructions provide procedures for installing the
V400 (Single Rod) 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 number,

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 packing from
sealing properly.

3.0 SAFETY PRECAUTIONS

Prior to installation of 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.

INSTALLATION INSTRUCTIONS

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. For
additional piping configurations, see Drawing SUB -4521.

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 name plate. Verify that
the flow arrow stamped on the instrument head is
pointing downstream in the direction of flow.

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.

Piping Configuration

Table 1. Straight Run Requirements

4.2.2 Vertical Piping

The Verabar may be mounted in any location around the
circumference of the pipe for vertical piping applications
(Figure 1).

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.

4.5 Piping Support

For sensors that extend more than 36” (915mm) beyond
the pipe wall or for sensors mounted in thin-walled pipes,
external support of the Verabar is recommended. This
will reduc e stresses on the pipe wall.

5.0 INSTALLATION PROCEDURE

5.1 Assemble the Verabar

Your Verabar is shipped loosely assembled and is not
properly tightened for proper pressure retention. Follow
all assembly steps to ensure a safe installation (see
Figure 2).

5.2 Install Instrument Valves or Manifold

5.2.1 Valves

If the Verabar does not have a valve head, install
instrument valves using proper thread sealant. Be sure
instrument shut-off valves are installed and shut prior to
repressurizing the pipe.

5.2.2 Manifold

If the Verabar has a direct or integral manifold, be sure
the high and low pressure block valves are shut off prior
to repressurizing the pipe.

Figure 2. Verabar Model V400S (Single Rod)