Veris Verabar V250 Installation Instructions User Manual

Verabar v250 (hand insert), Installation instructions

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Verabar V250 (Hand Insert)

INSTALLATION INSTRUCTIONS

1.0

SCOPE

These instructions provide procedures for installing the
V250 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 installing the Verabar flow sensor, check maxi-
mum operating conditions on the 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.

Warning: The V250-10 can withstand a maximum
pressure of 30 psig (2 Bars) and the V250-15 can
withstand a maximum pressure of 10 psig (.7 Bar).
Do not insert the V250 in pipes with pressures
greater than 30 psig (2 Bars).

4.0

INSTALLATION PREPARATION

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.

















Table 1. Straight Run Requirements

Piping Configuration

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