Fuel level indicator User Guide

USER GUIDE
FUEL LEVEL INDICATOR
GPSM
Intelli LLC
Ukraine, 03035, Kyiv, Lva Tolstogo street, 63
tel.: +38 (044) 3622956
fax: +38 (044) 2494445
E-mail: info@fuel-sensor.com
www.fuel-sensor.com www.intelli.com.ua
Revision: 2.02i
Contents
1.
Display application .....................................................................................................................................3
2.
Specifications ..............................................................................................................................................3
3.
General view ...............................................................................................................................................3
3.1.
Dimensions .........................................................................................................................................4
3.2.
Wires description ...............................................................................................................................4
4.
Wiring diagram. Connection to the fuel sensor. ........................................................................................4
5.
Installation of the GPSM Indicator .............................................................................................................5
6.
Calibration of the device ............................................................................................................................5
7.
Operation concept......................................................................................................................................5
8.
Operating rules ...........................................................................................................................................5
9.
Component parts........................................................................................................................................6
10.
Servicing .................................................................................................................................................6
11.
Repair .....................................................................................................................................................6
12.
Warranty.................................................................................................................................................6
Attachment А. The unit calibration guide
1. Display application
GPSM Display is applied with Pro Sensor and used for indication of the fuel and lubrication
materials level (like diesel oil, petrol, paraffin oil), other dielectric liquids and electrically conducting
fluids (water, etc) keeping its physical character at the operating temperature range.
The given manual describes the operation and setting of GPSM Indicator, hereafter referred to
as “indicator”.
Observe job safety rules before installation of the fuel level sensor and GPSM indicator!
2. Specifications
Electrical specification
DC supply voltage, V
Input current (at 12V), mA
Serial interface
Level gauging
Indication discreteness, l
Averaging time, s
Display
Type
Screen Size
Number of segments
lv
Liquids to be indicated
Fuels
Oils
Bio fuel
Water
9 - 30
max 50
RS-485, RS-232 (optionally)
1
0 - 100
LED
22.5x14
3
2.4 mcd
petrol, diesel oil, paraffin oil
Engine oils, transmission lubricants, power
steering fluids and hydraulic oils
Ethanol Е100, Е85, Е50, Е20, Е10, methanol
Electrically conductive liquids
Operation conditions
IP Code
Operating temperature, ̊С
EMC Immunity Level
Operation conditions
IP 30
-20…+50
SAE J1113/2 1996
3. General view
Fig. 1. General view of the GPSM display.
3.1. Dimensions
Fig. 2. Dimensions of the GPSM display. Exact wire position can vary.
3.2. Wires description
Red – «+» 9-30 V
Green – «-» GND
Yellow – A (RS-485)
Blue – B (RS-485)
Red («+»)
Yellow (А)
Blue (B)
Green («-»)
Fig. 3. The layout of the pins of Pro Sensor fuel gauge unit.
The Display is protected against polarity reversal; the protection against polarity reversal will
protect the electronics from incorrect connection of the voltage. RS-485 circuits are protected from
overvoltage (up to 30V) and short circuit.
The improper connection of the unit results in termination of the warranty liabilities of the unit
supplier.
Regardless the unit modification, it is prohibited to connect the unit to the in vehicle network
without installing two additional fuses for “+” and “-” that come with the unit. The fuses should
have a capacity less than 500 mA.
4. Wiring diagram. Connection to the fuel sensor.
Indicator should be connected directly to the fuel level sensor’s power supply; signal wires should be
connected directly to the signal wires of the Pro Sensor according to the table below:
Pairing display with fuel level sensor
Display wires
Pro Sensor wires
Yellow wire – A (RS-485)
Yellow wire – A (RS-485)
Blue wire – B (RS-485)
Blue wire – B (RS-485)
Red wire – “+” (9-30 V)
Red wire – “+” (9-30 V)
Green wire – “-“ (GND)
Black wire – “-“ (GND)
Table 1. Connection of the display and Pro sensor.
5. Installation of the GPSM Indicator
GPSM fuel level indicator is a compact device and can be installed in any suitable place. Avoid
direct sunlight that can lead to overheating (>80 ˚C) of the display body. Do not install in a hot and
humid place.
6. Calibration of the device
Calibration test means obtaining a table of correspondence of the unit output signal (in
nominal units: 0,00% - 100,00%) to the fuel volume (in the litters, for example). The fastest way of
calibration is setting 0,00% of the fuel level as zero litters and 100,00% as X litters (for example,
X=1000 litters). When level sensor will show 50,00% the display will automatically indicate it as
500 litters. However, as much corresponding values between output signal and liquid volume in
the tank you will have the higher absolute values will be shown. Example of the calibration table
shown below:
Pro Sensor output signal (0-4095)
Corresponding volume in the fuel tank
10
5 litters
100
50 litters
200
95 litters
…
…
Table 2. Example of calibration table.
1. Before starting calibration, put the vehicle on the level ground.
2. Drain the fuel from the tank.
3. Fuel until the unit readings start changing. Write the unit readings and the used fuel
volume into a Table.
4. Fill the tank with 10-40 liters of fuel at a blow (depending on the tank volume) and each
time write the output signal values and the corresponding amount of fuel into a Table.
7. Operation concept
Fuel indicator – is a computing device, which indicates data from the fuel gauge (Pro Sensor),
calculate liquid volume or shows liquid level. Indicator with RS-485 interface can be connected up
to 6 Pro Sensors simultaneously.
8. Operating rules
The unit operating rules:
-
it is prohibited to expose the unit to aggressive influences, magnetic fields having the activity
exceeding the one specified in SAE J1113/2 1996, mechanical stresses, sudden alteration of
temperatures differing from the natural ones, also to operate the unit under conditions
differing from conditions described in this manual;
-
it is prohibited to connect the unit to devices having interface differing from the one
described in this manual;
-
the installation and setting of the unit should be performed by the staff who has studied the
occupation standards, the unit operation concept, its operating features and technical
specification.
9. Component parts
The supply package includes:
-
fuel level GPSM display (main body);
-
extension cable (up to 1 m);
-
a device for setting the fuel gauge unit (optional);
10. Servicing
The unit does not require servicing.
11. Repair
The unit is maintainable if there is no mechanical damage.
12. Warranty
Warranty period is 12 months since production date. The production date can be seen in the
unit datasheet.
Removing the device number from the unit leads to the cessation of the warranty.
The manufacturer guarantees the normal operation of the unit if the customer follows the
operating rules.