V1.15
Liquid Level Display
Datasheet
A-A. Tiimanni 1, 21004 Narva, Estonia.
Tel.: +372 3569590, Fax: +372 3566292 , e-mail: info@omnicomm-online.com
www.omnicomm-online.com
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TABLE OF CONTENTS
INTRODUCTION. .................................................................................................................................................... 2
USEABILITY. ........................................................................................................................................................... 3
SPECIFICATIONS. .................................................................................................................................................... 4
GENERAL VIEW. ..................................................................................................................................................... 5
LLD DIMENSIONS. .................................................................................................................................................. 6
CONNECTION SCHEME OF ONE OR MORE LLD VIA EIA-485 TO TWO (OR MORE) SENSORS LLS AND GPS/GPRS. .... 7
CONNECTION SCHEME OF LLD VIA RS-232 TO GPS/GPRS. ...................................................................................... 7
CONNECTION SCHEME OF LIQUID LEVEL SENSOR LLS WORKING OUTSIDE OF THE MONITORING SYSTEM. ........... 8
CONNECTION SCHEME OF LLD TO TWO SENSORS LLS (20160 AND 20230), CONNECTED TO DALCON. ................... 8
TECHNOLOGICAL CONNECTOR OF PRODUCT. ........................................................................................................ 9
CONNECTION SCHEME OF CONNECTION TO PC. .................................................................................................... 9
REVISION HISTORY............................................................................................................................................... 10
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INTRODUCTION.
Liquid Level Display hereafter referred to as “LLD”, is designed to display the information about current level of
the fuel in the fuel tank of the motor vehicle, or motor fuel storage/transportation tank. It is possible to display
one of the following values:

fuel level in the first fuel tank (liters) by the first liquid level sensor (LLS);
 fuel level in the second fuel tank (liters) by the liquid level second (LLS);

total fuel level in both fuel tanks (liters).
LLD perceived data about the fuel level from the liquid level sensor (LLS), converts received data to the volume
using the loaded calibration tables and displays the value of volume.
No more than two liquid level sensors (LLS) can be connected to the LLD. Both sensors can be installed in one tank,
this installation can be used for improving the measuring accuracy of the fuel level in the tank and compensate the
slope of the tank.
In the case if liquid level sensor LLS is adjusted to send data by symbol protocol, LLD will work only
with one sensor LLS.
There is a possibility adjust the LLD for displaying the fuel level in the tank in the metric units of length look at
(“LLD installation manual”).
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USEABILITY.
LLD can be used with:

one or two liquid level sensors (LLS), connected via EIA-485 interface;

one liquid level sensor (LLS), which connected with GPS/GPRS device via RS-232 interface;

one liquid level sensor (LLS), which is not used conjunction with monitoring systems, connected via EIA485 and in the mode of periodical send data;

one or two liquid level sensors (LLS), which is(are) included in the monitoring systems of other producers
and connected via EIA-485 interface;

one liquid level sensor (LLS), which is included in the monitoring systems of other producers;

one or two liquid level sensors (LLS), which is(are) included in the monitoring systems of other producers
and connected with DALCON.
LLD can be used only with liquid level sensors (LLS), produced by OMNICOMM OU, has digital
serial interface RS-232 and/or EIA-485, destined for sending data of measurement results.
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SPECIFICATIONS.
Characteristic
Value
Comment
Power supply, Volts DC
+8,0 …..+45,0
Power, W
No more 2
Dimensions, mm
137x61x23
Ingress protection
IP41
Operation temperature, C
-40,0 ….+70,0
Indication on the front panel
light emitting diodes
a seven segment indicator on four
ranks and three LEDs
Brightness
Maximum/Minimum/Off
3 levels
Displays volume
0 ….9999*
Physical level
EIA-485
for connection to PC (through
REUSABLE TOOL -UNU) and for
connection liquid level sensors LLS
20160 and LLS 20230
Speed of data transmission, bit per
second
1200,2400,4800,9600,19200,
default value is 19200
Weight, kg
No more 0,2
Mode of operation
continuous
without connected cables
38400,76800,115200
*) If the volume of the fuel tank is more than 9999 liters we recommend to fill in the calibration table in dekaliters,
so the value of volume, displayed on the LLD should be multiplied by ten, and the maximum volume will be 99990
liters (look at “LLD installation manual”).
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GENERAL VIEW.
Figure 1.
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LLD DIMENSIONS.
Figure 2.
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CONNECTION SCHEME OF ONE OR MORE LLD VIA EIA-485 TO TWO (OR MORE)
SENSORS LLS AND GPS/GPRS.
Figure 3.
CONNECTION SCHEME OF LLD VIA RS-232 TO GPS/GPRS.
Figure 4.
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CONNECTION SCHEME OF LIQUID LEVEL SENSOR LLS WORKING OUTSIDE OF THE
MONITORING SYSTEM.
Figure 5.
CONNECTION SCHEME OF LLD TO TWO SENSORS LLS (20160 AND 20230),
CONNECTED TO DALCON.
Figure 6.
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TECHNOLOGICAL CONNECTOR OF PRODUCT.
Figure 7.
CONNECTION SCHEME OF CONNECTION TO PC.
Figure 7.
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REVISION HISTORY.
Date
02.03.12
11.09.13
14.09.15
Version
1.12
2.13
1.15
Description
Initial Release
Changed logo
Changed company name
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