Table of contents
Introduction ........................................................... p. 1
Sensor Types and Size Selection ........................ p. 1
Mechanical Installation ......................................... p. 3
Electrical Installation ............................................ p. 5
Calibration ............................................................. p. 6
Impeller Assembly and Shaft Replacement ....... p. 7
Troubleshooting .................................................... p. 9
Specifications ........................................................ p. 11
Introduction
Used in conjunction with flow monitors or transmitters, Rain Bird non-magnetic flow sensors manufactured by Data
Industrial provide accurate readings of the rate of liquid flow as well as total
accumulated flow. A number of
sensor models are offered, which cover applications for a wide range of pipe sizes.
The flow sensors generate a frequency which is proportional to flow rate. An internal preamplifier allows the pulse
signal to travel up to 3000 feet without further amplification. Power to operate the sensor is provided by the flow
transmitter. The impeller, shaft, O-rings, and impeller bearings are replaceable in the field.
Data Industrial flow sensors feature a closed, six-bladed impeller design, using a proprietary, non- magnetic
sensing technology. The forward-swept impeller shape provides higher, more constant torque than other
impeller designs, and is less prone to fouling by water-borne debris. The forward-curved shape, coupled with the
absence of magnetic drag, provides improved operation and repeatability, even at lower flow rates. As the liquid
flow turns the impeller, a low impedance digital signal is transmitted with a frequency proportional to the flow rate.
Sensors of similar type are interchangeable, so there is no need for recalibration after servicing or replacement.
Sensor Types and Size Selection
Rain Bird provides several basic sensor configurations using the same impeller element. This allows for a wide
range of applications and pipe sizes. Sensors are supplied with two single conductor 18 AWG stranded copper
wire leads 48 inches in length with U.L. Style 1056 direct burial insulation. These sensors may be used in below
grade applications in meter pits of valve boxes. All sensor electrical components are self-contained. Pressure and
temperature ratings for the various models are contained in the Specifications section of this manual. These
models are further described one the following pages.
Owner's Manual
for Flow Sensors
by Data Industrial
