Blue-White Sonic-Pro S4 Ultrasonic Flowmeters - Manual (Page 3)

Page 1 Sonic-Pro
Safety Precautions
Thank you for purchasing the Sonic-Pro series S4 ultrasonic flowmeter.
This instruction manual provides important information regarding the safe installation,
operation and maintenance of the flowmeter. Please read it carefully before attempting to
install or operate the meter. A copy of this manual should be kept by the operator. Extra
copies of this manual are available from your supplier or directly from the manufacturer.
The following important symbols are used throughout this manual and on labeling affixed to
the flowmeter:
QUESTIONS REGARDING THE SAFE USE OF THIS PRODUCT AND OTHER TECHNICAL
ASSISTANCE MAY BE DIRECTED TO:
Blue-White Industries
714-893-8529
techsupport @blue-white.com
!
CAUTION
risk of electric shock
CAUTION
risk of danger
In all cases, when this symbol is used on labeling affixed to the flowmeter, the
documentation needs to be consulted to find out the nature of the potential
HAZARD and any actions which have to be taken.
!
If the equipment is used in a manner not specified by this instruction manual,
the protection provided by the equipment may be impaired.
!
CAUTION
risk of danger
This symbol identifies a risk of electric shock where the possibility of injury or
death is present.
This symbol identifies a risk of injury or death is present.
1.0 Product Overview
The Sonic-Pro series S4 Ultrasonic Flow Meter can measure fluid flow in water and many
other clean fluids with sound speeds that are similar to water. The meter measures fluid flow
using the Transit Time method. The S4 ultrasonic sound transducers do not touch the
process fluid and there are no moving parts. This method of flow measurement is safe, non-
intrusive and requires little to no maintenance.
The fluid being measured must be relatively “clean” to enable the sound waves to complete
their circuit. The maximum amount of particles should not exceed
. The 5% (50,000 ppm)
meter cannot measure through air. Air bubbles and excessive turbulence will disrupt the
sound beam.
The angle of the sound beam, as it travels through a material, is effected by the speed that
sound travels through that material. As the sound speed changes, the angle changes. Sound
O travels through 68 F clean water at a speed of 1,481 meters per sec. The S4 ultrasonic
sound transducers are factory positioned for a fluid sound speed of 1,500 m/sec +/- 100.
They cannot be adjusted in the field.
Water that contains concentrations of other chemicals, or other chemicals entirely, may be
acceptable provided the chemical does not change the sound speed (SOS) more than
approximately +/- 100 meters per second and provided the fluid allows the sound beam to
pass through unimpeded. Note that the speed that sound travels through the fluid is effected
by changes in the fluid’s density.
The S4 includes a 6-button user interface that can be used to configure the meter. The
optimum sound speed setpoint can be adjusted by the user within the range of 1,500 m/sec
+/- 100 m/sec.
During operation in the Transit Time measurement method, a short ultrasonic signal burst
passes first in one direction and then in the other between two transducers separated along
the length of the pipe. When traveling in the same direction as fluid flow, the burst is carried
along by the fluid and arrives earlier as a result. When traveling against fluid flow, the burst is
held back by the fluid and arrives later. The SPU (
measures this Signal Processing Unit)
difference in time-of-flight in the two directions. From this, the actual time-of-flights, the
distance traveled in the fluid and the angle of the ultrasonic signal path, it calculates the fluid
velocity.
Page 2 Sonic-Pro
TRANSIT TIME MEASUREMENT PRINCIPLE
Industries, Ltd. Industries, Ltd.
ProSeries
by Blue-White Ind.
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Industries, Ltd. Industries, Ltd.
ProSeries
by Blue-White Ind.
d