Doppler Flow Meter - Simple, Non-Contacting
Flow Meter for Accurate
from Outside a Pipe
Isolated 4-20mA Output
2 Control Relays
Digital Signal Processing
Optional Intrinsic Safety
Doppler Flow Meters monitor the flow rate of
dirty or aerated liquids including: wastewater,
chemicals, acids, slurries, abrasives and
viscous liquids. Recommended for full pipes
and any fluid that contains solids or bubbles.
The UF D5000 strap-on sensor is mounted on
the outside of a plastic or metal pipe 12.7 mm
diameter or larger. To measure flow an acoustic
signal is reflected back to the sensor from
moving particles or gas bubbles suspended
in the fluid. Installation is easy - without
shutting down the flow system. No contact
is made with the moving fluid and no pipe
cutting or drilling is required. There is no
fouling or scale build-up on the sensor.
The UF D5000 Doppler Flow Meter includes an
ultrasonic sensor, a simple 5-key calibration
system, a large digital flow rate display with
totalizer, isolated 4-20mA output and two
programmable control relays. Data logger and
intrinsically safe sensor are optional.
Designed for “Difficult” Liquids - The UF D5000 Doppler Flow Meter works best in applications
that would defeat regular contacting flow meters. Because the
Sensor is mounted on the outside of the pipe, it is unaffected by
abrasives or harsh chemicals. There is no obstruction to flow
and no pressure drop.
Easy to Install - Each UF D5000 Doppler Flow Meter includes a strap-on ultrasonic
sensor, an adjustable stainless steel mounting clamp and
sensor coupling compound. The sensor fits on the outside of any
pipe diameter 12.7 mm or larger. It takes just a few minutes to
install. There is no need to shut down flow.
Simple, Single-Head Sensor Design - Ultrasonic signals are transmitted and received from a
single-head sensor. The mounting clamp (included) ensures
correct sensor alignment on horizontal or vertical pipes. The
UF D5000 automatically self-tunes to the cable length up to
150 m (500 ft).
Works on Most Pipes - The UF D5000 Doppler Flow Meter measures flow in PVC,
carbon steel, stainless steel, cast iron, fiberglass and lined
pipes... any pipe material that conducts ultrasound. Doppler
signals cannot transmit through pipe walls which contain air
pockets (e.g. concrete or wood), or loose pipe liners (with an air
gap between the liner and pipe wall).
NEW - Backlit Matrix Display with Simple, 5-key Menu System - Calibration is easy with the new UF D5000 user-friendly menu
system. Press the arrow keys to scroll through menus, change
settings and enter calibration values. You can select English,
French or Spanish menus, enable a password to protect settings
and control brightness of the digital display.
NEW - Reverse Flow Measurement - The UF D5000 measures flow in either direction and displays
positive or negative values. You can control the Totalizer to
subtract reverse flow, or to totalize forward flow only. The 4mA
setting can also be adjusted to a negative flow setting.
NEW - Optional Data Logger with USB Thumb Drive Support - Order your UF D5000 Doppler Flow Meter with an optional built-in
2 million point data logger. It includes Windows software to display
flow charts and tables and to create dynamic flow reports. Just plug
in a standard USB flash drive and log files are downloaded
automatically - and fast!
Principle of Operation - The UF D5000 Sensor transmits continuous high frequency sound
through the pipe wall into the flowing liquid.
Sound is reflected back to the Sensor from particles or gas bubbles
in the liquid. If the liquid is flowing, the reflected sound returns at an
altered frequency (the Doppler effect). The UF D5000 continuously
measures this frequency shift to accurately measure flow.
Enhanced Signal Processing for Reliable Accuracy - The UF D5000 Doppler flow algorithm filters out background noise
and interference. The digital signal processor discriminates against
weak and distorted signals. When the processor cannot measure
accurately the meter will display zero flow and indicate low