Page 5 of 10
LS-MC
Date of Issue: 19/09/2013
Issue Number: 5.2
Tel:
+44 (0) 1732 861200 -
E-mail:
Web:
www.sontay.com
© 2012 Sontay Limited. All rights reserved
20/4
4/20
B.rEF
Liquid
level
Connections & Dimensions:
With the LS-MC installed and display units selected, the display will now be showing what the instrument thinks is the liquid level. This
is a value calculated by the microprocessor, being the difference between the distance to target being measured and the default value
for the datum or bottom reference (b.rEF).
Before changing any of the default values, use blue button
to scroll along to the next piece of information, which is the distance to
target as measured by the LS-MC from the front (transmit) face. This value is shown alternately with the text “diSt” to remind the user
the LS-MC display is in distance mode. You can now quickly check correct operation against a manual measurement if required.
Tip: A feature of the LS-MC useful at this stage is that it can be used as an electronic tape measure. With an empty tank or vessel, the
LS-MC will read the distance to the bottom of the tank. This can be noted and used when setting b.rEF later.
Press blue button
again to scroll the display to show the echo size on a scale of 0-100. (It is possible to record a value greater than
100, but do not worry about this!). With the display in this mode, the central “:” cursor will flash once for every echo received, which
under normal circumstances will be approximately once per second.
Tip: It is useful at this point to check that the maximum echo size available is being received. Adjust the position of the instrument until
the highest echo size is shown continually. In most applications, the signal strength will vary over a wide range : 20 – 80.
Press blue button
now to return to the original level reading and to start the calibration routine.
Note that the output of the LS-MC will vary during programming as the various default values are changed. The display will
automatically revert to the level or distance reading from any other display after a period of 4 minutes.
+
24Vdc Supply
4-20mA Output
First Measurements:
2” BSPT
202mm
96mm
106mm
140mm
158mm
