Step 2 - Measure The Tank - FlowLine EchoWave LG10 Series Manual

Configuration

STEP 2 - MEASURE THE TANK

Measuring the tank is one of the most important aspects in
configuring the sensor. When measuring the tank, take
into account the location of the sensor with respect to
fittings, risers, dome tops and bottoms, and identify where
the measurements are taken from the sensor. The Sensor
Height is influenced by the installation location. Sensors
mounted along the sloped portion of the tank will result in a
lower (HEIGHT) value.
installed in risers/nozzles will result in a higher (HEIGHT)
value.
The basic measurements (Sensor Height, Probe Length, Max. Fill-H and Man. Fill-H) for configuration are
described below:
1. SENSOR HEIGHT - Distance from the Top of Sensor's
Threads (sensor's measurement location) to the bottom
of the tank.
a. The Sensor Height is typically set to the bottom
of the tank.
b. This setting determines the 4mA location.
2. PROBE LENGTH – Actual physical length of probe.
a. The Probe Length is measured from the bottom
of the threads to the end of the probe.
3. MAX. FILL-H - Distance from the bottom of the tank to
the level of liquid where the tank is full.
a. This setting determines the 20 mA location.
b. The MAX. FILL-H is typically set to the liquid full
level.
c. 20mA cannot be set within the sensor's upper
dead band [4" (10cm) from top of the threads].
d. Largest MAX. FILL-H value will be as follows:
Largest MAX. FILL-H = SENSOR HEIGHT – 4" (10cm)
4. MIN. FILL-H - Distance from the bottom of the tank to the lowest portion of the probe when level can be
detected.
a. This setting determines the 4 mA location.
b. The MIN. FILL-H is automatically calculated by WebCal
c. 4mA cannot be set within the sensor's lower dead band [2" (5cm) from end of the probe].
d. Smallest MIN. FILL-H value will be as follows:
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On the other hand, sensors
Smallest MIN. FILL-H = SENSOR HEIGHT – Probe Length - 2" (5cm)
®
.
Section Five
MN300840 REV A8