Badger Meter Irrigation Sensors - 1/2 and larger" - Manual (Page 4)

Series 200 Flow Sensors
3 ¾”
2
03
4
5
Adjusting Nuts
Figure 1: Installation for 220BR and 220SS
3. Clean O-rings and flow sensor sleeve, and lightly
lubricate O-rings with silicone grease from the packet
provided or some other acceptable lubricant. Take
care not to get grease on the impeller or bearing.
4. Insert the flow sensor into the 2 inch NPT adapter so
that the mounting holes in the positioning collar fit
over the studs on the adapter. Lower the sensor onto
the previously adjusted nuts. Install the lock nuts on
top of the positioning collar and tighten. Now tighten
the lower jam nuts firmly against the upper adjusting
nuts to secure them for future removal of the sensor
for inspection or service.
Alignment of Flow Sensor
1. Loosen positioning collar set screws with a 3/32 inch
Allen wrench. Place the alignment rod through the
sight holes in the flow sensor. Refer to Figure 2. Using
the alignment rod as a guide, align the flow sensor so
that the flow label arrow matches pipe flow direction
and so that the alignment rod is exactly parallel to the
pipe. This procedure aligns the impeller directly into
the fluid flow.
SET SCREW
ALIGNMENT ROD
ALIGNMENT ROD
C C
Figure 2: Alignment of Flow Sensor in 220BR and
220SS
2. As a backup to the flow arrow label, there is a
small hole next to the larger sighting hole of the
upstream side. With a 3/32 inch Allen wrench, tighten
positioning collar set screws.
3. Double check that the sighting holes in the sleeve are
parallel down the pipe and that the flow arrow label
matches pipe liquid flow direction.
4. Cable routing: The positioning collar is threaded for
connection of a standard 1/2 inch electrical conduit
(flex cable) or a wire strain relief. Route cable as
required. Be sure to leave enough flex in cable or
conduit to allow future removal of sensor for service
or cleaning if necessary.
HOT TAP INSTALLATION FOR
225BR, 226BR, AND 226SS
Badger Meter Series 200 hot tap style liquid flow sensors
are designed for use in cases where pipelines will be in
continuous service and depressurizing or draining the
system for installation or service is not practical.
The Series 200 hot tap sensors are designed to be installed
either in a depressurized pipe by hand or “Hot Tapped”
into a pressurized pipeline. Both installation procedures
are listed in this installation and operation manual. If
there is the slightest possibility that the pipe could be
full or pressurized, FOLLOW THE INSTALLATION FOR
PRESSURIZED PIPE.
Refer to Figure 3 for location or identification of the
various parts described in the following procedures.
The insertion depth and alignment of the sensor assembly
are critical to the accuracy of the flow measurement. The
flat end of the sensor tube assembly MUST BE INSTALLED
1-1/2 inches from the inside wall of the pipe. In order to
allow for variations in wall thickness, lining or coatings
the depth adjustment is controlled by the position of the
hex nuts on the three threaded studs of the hex mounting
adapter. The hex mounting adapter is provided with a
2 inch male NPT connection. Both gate and ball valve
units are provided with 2 inch nipples for mounting onto
saddles, weld-o-lets, etc.
Depth setting is accomplished by positioning the hex
nuts 14-7/8 inches minus the thickness of the pipe, from
the outside diameter of the pipe. For example, measure
the wall thickness of the pipe from the coupon removed
when the 1-7/8 inch hole was cut into the pipe. If the pipe
was 1/8 inch thick, subtract 1/8 inch from 14-7/8 inch, or
position the nuts 14-3/4 inch from the outside diameter of
the pipe. This will allow the 16-3/8 inch sensor to protrude
1-1/2 inch into the pipe.
Apply anti-seize thread lubricant, supplied with the
sensor, to the threaded studs of the mounting adaptor.
Page 4 August 2012