Distance (Height Of Liquid) Vs. Volume Of Liquid - FlowLine EchoWave LG10 Series Manual

Getting Started

DISTANCE (HEIGHT OF LIQUID) VS. VOLUME OF LIQUID

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With WebCal , the LG10/LG11 series can be configured to operate as a device that reads the distance (height
of liquid) or volume of a liquid. The location of the empty current will adjust depending on which configuration
method is selected.
Note: The empty (4mA) location is placed at a different location based upon selecting distance (liquid height)
or liquid volume.
Linear Tank Example
Note: In the above illustration, 10" of liquid will
always be equal to 100 gallons of liquid (1" = 10
gallons).
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Distance (Height of Liquid): When the EchoWave
distance (height of the liquid), the default for the sensor Empty will be at the
bottom of the measurement range (end of the probe minus the bottom dead
band). This is where 4mA will be set. The default for sensor Full will be at the
top of the measurement range (Top Dead Band), where 20mA will be set. The
20mA can be set by the Maximum Fill-Height.
Volume of Liquid: When the LG10 series is configured to read the volume of
liquid, the output will track the volume of the tank as the level increases and
decreases. Like Distance, the Empty and Full settings will default to the low
and high end of the Measurement Range. The location of the 20 mA can be
adjusted with the Maximum Fill-Height settings. However, the shape of the
tank can influence the current output, depending upon the tank being linear or
non-linear (see below).
Non-Linear Tank Example
Note: In the above illustration, 1" of liquid does not
equal 10 gallons. The 10" at the bottom represents a
rise of 62.8 gallons. As a change between 10" and
20" represents an increase of 109.6 gallons (i.e.
172.4 gallons – 62.8 gallons).
Section Two
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is configured to read the
MN300840 REV A8