Veris Verabar V400D Installation Instructions - Manual

Verabar V400D (Double Rod)
INSTALLATION INSTRUCTIONS
1.0 SCOPE
These instructions provide procedures for installing the
V400 (Double 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.
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.
Table 1. Straight Run Requirements
Piping Configuration