ULM-2.5 Ultrasonic fuel
Contents
1. The glue will stiffen in 24 hours Therefore it is recommended to fix the radiator with a steel tape of 16mm width not included in the set laid in the gap of the radiator For tighten the steel tape you can use the machine packing tool M4K not included in the set As well you can use the installation magnet not included in the set which should be taken away after the glue stiffened Remark Stiffening of the glue could be shortened till 1 hour by heating to 60 C using a heat gun 15 When the glue is stiffened completely check the voltage in the Test mode again It should be stable 7 9 6V and the greed LED should shine constantly 16 Put the fuel level meter in the Measurement mode put the micro switch 1 in position 2 and restart power 17 If the fuel level meter will be used in the autonomic mode ULM 0 8 modification without connection to a terminal GSM GPRS transmitter set the micro switch 4 in position 1 see Table 2 Thereby the built in battery will be switched on It provides nonvolatile timer for data and time Remark Current date and time should be set by a dialer or a service center If the fuel level meter will be connected to a GPS GPRS transmitter set the micro switch 4 in position 2 see Table 2 18 Put the seal label over the micro switched 19 Fix the processing box 1 by the 3M double side scotch or and 4 screws in the driver s cabin and connect the wires of the cable 6 according to the pic 6 Remark If2. range is 0 3 9 6V For better precision of the data displayed by the both outputs it is necessary to set the maximum of the fuel level This setting is made by micro switches See the description in the pic 4 and the Table 2 Additionally the analog output CD Out could be connected to the corresponding input of the transmitter In this case error diagnostic information see the Table 1 will be sent to the transmitter If the GPS GPRS terminal has digital inputs the fuel level meter could be connected via digital interfaces see pic 2 In this case the data will be transmitted via EIA485 or RS232 interface according to a specialized protocol The specification of this protocol could be supplied by a special request Connection of the fuel level meter to the GPS GPRS terminal should be made via a special cable not included in the set See the pin out description of the special cable in the pic 8 View A AS 232 Re RS 232 Tx GND shield black eitil a green ELA 485 A black Power 5v k Swrich een RTS red I while fae IX e Ore ELA 455 6 ELA 465 4 pranga black Pic 8 Operating in autonomic mode Ultrasonic fuel level meter can operate in autonomic mode In this mode the fuel level meter works as a black box saving up data of the fuel level changes throughout 30 days The following data is saved in the nonvolatile memory Current date Current time Fuel level mm or volume liter see more information o
3. socket contacts description in the pic 3 5 6 Settings o LOT Digit OUT A Analog UT Pic 3 Side view of the processing box CD Out analog signal output of the fuel level meter status in Self test mode See the analog signal description in the Table 1 Table 1 Digital Out Frequency output Frequency of pulses of this signal depends on the fuel level in the tank The frequency range is 500 1500Hz amplitude of the signal is 10V For better precision of the output data it is necessary to set the maximum of the fuel level This setting is to be made by micro switches See the description in the pic 4 and the Table 2 IGN ignition wire Analog Out Analog output Voltage of the signal linearly depends on the fuel level in the tank The voltage range is 0 3 9 6V For better precision of the output data it is necessary to set the maximum of the fuel level This setting is to be made by micro switches See the description in the pic 4 and the Table 2 GND ground 12 24 ACC power f the micro switches The processing box 1 has a group of micro switches pic 4 to set different modes of the fuel level meter Group of micro switches Pic 4 Table 2 Description of the micro switches positions Switch N Position Settings Test mode ON Test mode OFF Measurement Limit of effective range 1 0m Limit of effective range 1 5m Limit of effective range 2 5m Limit
4. ULM 2 5 Ultrasonic fuel level meter Technical parameters iterace Analog 0 3 9 6V frequency 500 1500Hz EIA 485 2 pcs half duplex RS232 IP67 Description Ultrasonic fuel level meter is used for fuel level measurement in tanks of auto tankers and any other tanks with a height up to 2 5 meters The measurements are realized by the ultrasonic radiator installed directly on the external bottom part of the tank and data processing box The ultrasonic fuel level meter can measure levels of diesel petrol liquefied gas or other liquid materials depending on software settings Kit Pic 1 ULM 2 5 includes 1 Data processing box 1 pcs 2 Ultrasonic radiator with cable 1m 3 Extension cable 6m 4 Fuse holder 2 pcs 5 Fuse 1A 2 pcs 6 Interface cable 1m 7 3M double side scotch for processing box 1 fixation 1 pcs 8 Cable yokes 4pcs 9 Screws for processing box 1 fixation 4 pcs 10 Covers 4uIT 11 Users manual 12 Metal yokes for fixation the cable of the ultrasonic radiator 4 pcs 13 Seal labels 2 pcs Accessories not included ULM extension cable 5 meters Installation kit Acoustic glue steel tape 4 meters ULM programmer reader Extension cable for the ULM programmer reader Cable for 485 232 ports Oe ONS Indication connection and tuning tools There are 3 LEDs on the top of the processing box pic 2 1 Red power supply indicator The LED is on when the power supp
5. a 3 Working surface p of the radiator Pic 7 Connect a voltmeter to the wires Analog Out and GND Coat the working surface of the radiator with some water Water should be between the working surface of the radiator and the tank every time you press the radiator to the tank Make sure that there no grains of sand If the installation is performed under subzero temperature use a lubricant instead of water In this case after the place for the installation is chosen the lubricant should be completely removed and the place should be defatted Attention Without an acoustic contact the ultrasonic radiator does not operate O 8 Set the Test mode put the micro switch 1 in position 1 see the Table 2 Put the power off then on to start the Test mode The green LED will start blinking 9 Press the radiator to the chosen 4 5 places of the tank one by one and check the signals level The green LED will blink with a frequency corresponding to the signal level As higher the signal level as faster the green LED will blink If the signal is maximum the blinking is almost invisible the LED will shine constantly or and The voltmeter will register the voltage that varies in the range 0 9 6V and directly proportional to the signal level 10 Set the Measurement mode put the micro switch 1 in position 2 see the Table 2 Put the power off then on to start the Measurement mode The green LED will be off 11 Press the r
6. adiator to the chosen 4 5 places of the tank one by one again and check the signals level The voltmeter will register the voltage that varies in the range 0 9 6V and directly proportional to the fuel level The green LED should not light as if it lights the fuel level is below 30mm 12 The best place for the radiator installation is the place where the signal was higher in the Test mode and the voltage is not less than 7V in the Measurement mode Example Test results Voltage in Test mode Voltage in Measurement mode V Comment V pT Good for installation o 2 o a2 00d for installation pS KOE cee lence for installation Fc 96 iss Not good for installation as low voltage in Measurement mode Po Not good for installation as low voltage in Measurement mode The 1 2 and 3 checked places give 6 9 6V in the Test mode and 7V 0 1V in the Measurement mode The 4 and 5 places give 9 6V in the Test mode and 0 15 1 5V in the Measurement mode This means that the 4 and 5 places have bad signals So you have to choose one of the first 3 places which has the highest voltage in the Test mode 13 Remove the paint from the chosen place completely till the metal and put a layer of an acoustic glue not included into the set The glue should be prepared according to its instruction Air bubbles in the glue are not acceptable 14 Press the working surface of the radiator to the glue
7. installed because this wire is used for procedure of searching of an optimal place for the ultrasonic radiator installation Installation of the ultrasonic radiator and the processing box Fill the tank fully or at least for 2 3 This will help you to install the ultrasonic radiation with the best precision Place the vehicle on a horizontal surface the tank should be in a horizontal position If the tank was installed incorrectly and its position differs from the horizontal for more than 2 degrees correct the installation of the tank to make its position as close to horizontal as possible Set the limit of the effective range by the micro switches 2 and 3 refer to the pic 4 and the Table 2 For example if the height of the tank is 1 8m choose the effective range 2 0m by putting the switch 2 in position 1 and switch 3 in position 2 Choose 4 5 places for the ultrasonic radiator installation on the bottom of the tank These places should be close to the center of the tank bottom and there should not be any partitions and other elements inside the tank over the chosen place Make sure that the working surface of the radiator installed in the chosen palaces will be horizontal as parallel to the fuel surface in the tank as possible and therefore the axis of the radiator should be close to vertical See pic 7 Clean the chosen place from the dirt and grains of sand Cable with a protection pipe Tank Bottom vier Axis OF ihe radialor b
8. ly is fed to the processing box 1 2 Green indicator of the fuel level in the tank The indicator has 2 modes a Measuring mode The indicator blinks when the fuel level in the tank is below 50mm b Tuning mode see chapter Installation item Installation of the ultrasonic radiator The indicator blinks with different frequency depending on the level of received signal 3 Yellow indicator of the battery level The indicator blinks when the level on the built in battery is below 1 5V In this case you should change the battery Red Green Yellow N Ultrasonic radiator socket Multi interface socket Port 1 EIA485 RS232 Port 2 EIA485 UART USB port for connection to PC Pic 2 Ultrasonic radiator socket for connection the ultrasonic radiator 2 to the processing box 1 via the extension cable 3 Port USB for connection to PC for the service only Port 1 EIA485 RS232 for connection the processing box 1 to external equipment via digital interface EIA485 or RS232 For example GSM GPS terminals Or for making settings and reading data from ULM 2 5 built in memory via ULM programmer reader Port 2 EIA485 UART for connection the processing box 1 to ULM programmer reader for service purposes only Multi interface socket for connection the processing box 1 to the vehicle power supply net and to external transmitters for online monitoring of the fuel level See the multi interface
9. n www ChinaUltrasound com Temperature mode of the ultrasonic radiator Status of the fuel level meter Ignition if IGN wire connected ID of the fuel level meter Noo Pah The fuel level meter has a built in battery for saving the current date and time Before the installation and usage check the micro switch 4 which should be set in position 1 see the Table 2 Attention If the power is cut off disconnected from the vehicle power supply net and the micro switch 4 is in position 2 the current date and time will be lost Correct date and time could be set only via a special equipment and software supplied separately After 30 days new data will be re written over the earliest data Saved data could be uploaded via ULM programmer reader and special software supplied separately If the yellow LED start blinking the built in battery is discharged and it should be substituted
10. of effective range 2 5m Power supply from battery ON Power supply from battery OFF Installation Connection to the power vehicle supply net 1 Connect the ultrasonic radiator 2 to the processing box 1 by the extension cable 3 Make sure that the extension cable 3 should be connected to the processing box 1 by the connector with 3 rubber rings refer to the pic 5 Rubber rings Pic 5 Put the extension cable into a protective corrugated pipe and lay along the chassis frame or electric wiring run The cable should be distanced for more than 20cm from heated and moving elements of the vehicle Fix the cable by the plastic yokes with an interval about 50cm If necessary the extension cable of the radiator could be enlarged by an accessory ULM extra extension cable of 5 meter length But the total length should not exceed 16 meters Connect the processing box 1 to the vehicle power supply net by the cable 6 Pin out of the cable 6 is presented in the pic 6 x82 2 00 000 412 96 ACE md GND black GN brawn GO gut blug Pic Connect the red wire of the power supply 12 24ACC to the corresponding wire of the vehicle electric net through the 1A fuse Connect the black wire of the power supply GND to the corresponding wire of the vehicle electric net through the 1A fuse Do not connect Analog Out wire to your transmitting equipment before the ultrasonic radiator is
11. the fuel level meter will be used in autonomic mode without connection to a terminal GSM GPRS transmitter the processing box should be good accessible for connecting the special uploading cable 20 Connect the wires 12 24 ACC and GND to the vehicle power supply net If the vehicle has a switch of GND the connection should be made after the switch Terminal navigation equipment should be connected after the GND switch as well If it is necessary to connect the devices before the GND switch the circuitry of the both devices should have a galvanic isolation not included in the set ATTENTION DISCONNECT THE MULTI INTERFAE CABLE FROM THE PORT 1 AND THE ULTRASONIC RADIATOR FROM THE PROCESSING BOX IN CASE OF ANY ELECTRICAL OR WELDING REPAIRS OF THE VEHICLE Operating in a system with GPS GPRS transmitters Ultrasonic fuel level meter can operate in a system of collecting and transmitting data such as GPS GPRS transmitters For the connection to the transmitter the fuel level meter has several analog and digital interfaces If the GPS GPRS terminal has analog to digital convertor the following outputs could be used 1 Digital Out Frequency output signal Frequency of pulses of this signal depends on the fuel level in the tank The frequency range is 500 1500Hz the amplitude of the signal is 10V 2 Analog Out Analog output signal Voltage of the signal linearly depends on the fuel level in the tank The voltage
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