5707070-A Installation and Operation 2-3
Sono-Trak™ Doppler Ultrasonic Flow Meter
4
If the reading on the display panel appears to be accurate, continue to the next
step.
4
If you do not see a flow reading on the LCD screen at all, or if the flow reading
is much lower or higher than expected, try repositioning the transducers. If this
does not help, see “Determining if Your Process/Installation is Right for a
Doppler Flow Meter” on page 2-3 and consult “Troubleshooting the Unit” on
page 3-1.
7. Observe the yellow Echo LED on the display panel.
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If the Echo LED is on steady, and the flow reading appears to be accurate, your
Doppler flow meter is ready for operation. See “Normal Operation” on
page 2-25 to configure the flow meter for operation with your system.
4
If the Echo LED is flashing or not illuminated, see “Determining if Your
Process/Installation is Right for a Doppler Flow Meter” on page 2-3 and
consult “Troubleshooting the Unit” on page 3-1.
DETERMINING IF YOUR PROCESS/
INSTALLATION IS RIGHT FOR A DOPPLER
FLOW METER
Accurate operation of a Doppler flow meter depends upon your application and
installation site. Doppler flow meters offer many advantages over other flow meter
models when flows are viscous, turbulence is minimal, and piping materials are
appropriate. When conditions are adverse to Sono-Trak™ Doppler ultrasonic flow
meter operation, the Sonotrak™ Transit Time flow meter may offer an excellent
alternative. Contact “EMCO Flow Systems Support” on page 3-11 for more
information about this transit time meter.
To determine which flow meter is appropriate for your process and specific
installation, consider the following:
• The presence of reflective particles in the flow
• The pipe material and condition of pipe housing the flow
• The flow profile, meaning that you are able to provide acceptable straight run
requirements to ensure more accurate readings
The following sections discuss these considerations.
