User manual
Contents
1. 6 UpenaxHo e OTBEPCTHE 5 i i Bi Y a aJ 35 J i d b HaaktuaKas JOHA Matamme A Cuman AYT ranybodr KENTO Sene HR IF Duran 1 1 ropa ese 006821061 AMP Guparsea sopnye wtiqped J animar STO al 4504102. Pulse count in packet is over 380 Hz The signal format is meander 50 pulse height is equal to the half of supply voltage normal mode 500 4500 pulses 200 4500 pulses self diagnostic mode 420 pulses 420 pulses 420 pulses 420 pulses 0 15 30 45 time sec Fig 1 Format of output signal of FLS Strela PP Strela D232 D485 FLS Strela D 232 D485 with digital interface RS232 RS48 is used with recording or monitoring systems that have the same input interface Some compatible AVL devices are Intellitrac Teltonika DaisyTrack Digital interface can work with MODBUS protocols or with Omnicom compatible protocol Protocol parameters 19200 bit per second 8 bit 1 stop bit Resolution is arbitrary up to 63535 points per length Main advantages High resistance to external pickups poor ground and other interfering signals due to great pulse height No loss of data quality on terminal compared with analog output Frequency and digital sensors have almost similar protection against interference Fuel level sensors Strela User manual Marking There are the following signs and notes on the sensor Trademark of the manufacturer Full name of the sensor Serial number Manufacturing date State register mark according to GOST 8 383 The front face of the explosion protected sensors body is additionally marked with explosion protection OExiaIIBT6X and the range of ambient temperatures according to GOST
3. 12V vehicle electrical systems In this case sensor will not be able fo form a signal of a full tank signal will be limited by onboard voltage We recommend using sensors with 0 5 7V output for 12V vehicles Table 2 Working temperature C 40 65 Average time before malfunction Tay hours Not less than y percentile storageability time at y 95 years 12 Protection class IP66 Mass kg Failure criteria are functional failure or mismatch to declared measurement error L the length of sensor sensing element Fuel level sensors Strela User manual Short description of sensor product range Strela AO is a widely used fuel level sensor with analog voltage output They can be connected to most of monitoring terminals with analog input up to 5 V Lokarus SKAUT Autograph etc Strela A1 is connected to terminals with analog input up to 24 30 V Autograph Teltonika many other AVL terminals Note The voltage drop below 10 V is possible on the vehicles with 12 V electrical systems In that case the sensor is not able to produce signal of full tank level The signal will be limited by supply voltage We recommend to order sensors with maximal output signal up to 7V for vehicle with 12 V electrical system Strela A3 should be used in combination with standard fuel level indicators Sensor Strela A3 can e Determinate fuel level and produce signal equal to the fuel amount in the tank e Produce signal of minimal f
4. control ene Value at zero al uncut Frequency 500 1500 702 7 cuttable 30 Frequency 500 1500 197 6 cuttalbe short 5090 10 03 Dn F Z 00 20 60 80 00 20 40 Averaging time sec Analog cuttable 0 7 V Analog cuttable 1 7 V 1 Analog cuttable 0 10 V Fuel level sensors Strela User manual Table 8 Description of diagnostic codes of sensor errors MER Working i Description oscillator is stopped Works Error Oscillator frequency equal to 0 Reading error EEPROM Breakthrough at upper range F gt Fmax 10 sensor doesn t measure fuel level Type of failure error is of sporadic water short out when vehicle is in motion or permanent when mechanical short circuit occur nature After cause is eliminated the sensor passes into work mode Cause Sensing element pipes are short out water in the fuel mechanical short circuit Description set sensor calibration parameters failed Type error appears at once when you switch sensor on and has permanent nature i e fuel immersion wire short circuits doesn t effect on sensor output signal Cause possible static electricity impact by static electricity due to sensor cutting Description sensor stands by zero if fuel level is low than gives an error Type error occurs on dry sensor If you submerse sensor into fuel it works properly after it passes dead zone Cause more than 10 of non cutt
5. the tank see Fig 3 Truck level sensor is usually mounted not in the center 2 FLS Strela has no output for vehicle fuel indicator you will need FLS gauge unit to connect it to gauge Fuel level sensors Strela User manual Truck level sensor flange FLS place Fig 3 Recommended installation scheme Installation steps 1 Drill holes for FLS flange see fig 4 Usually bi metall drill head with 35mm diameter is used Fig 4 Bi metall bore HAWERA Before drilling a hole in a tank with diesel fuel you should refuel it until full In this case explosive vapor will not be produced If you drill a hole in tank with petroleum you should load it with water instead of petroleum or demount the tank and evaporate the fuel rests 2 Cut a FLS to desired length with a hacksaw see fig 5 You should leave about 10 20 mm for water on a bottom of the tank Remove carefully the aluminum rasping between tubes Fuel level sensors Strela User manual For water 5 10 mm Cut this length Initial length Fig 5 Sensor cutting 3 Calibrate a sensor see section sensor calibration Drill a central hole for sensor installation according to fig 3 It is better to start from central hole after that insert sensor in a hole and mark places for 5 screws The screws are placed asymmetrically We use standard size SAE 5 PIN see dimensions in Appendix 1 4 Place a gasket under the sensor it is recommended to sp
6. with that of a full tank There are different kinds of output signal You can choose among Analog output 0 5 4 5 V 0 5 3V 0 5 10V 0 5 12V Strela A Frequency output 500 1500 Hz Strela F Digital output serial interface RS232 of 485 with 1024 or 4096 points resolution Strela D232 Strela D485 Custom interfaces by demand current 4 20 mA MODBUS CAN Electronic components of a sensor are immersed into elastic compound that provides maximum protection IP66 and safety under any operation conditions Measuring tubes are made of the material that doesn t react with fuel components Sensors are adjustable for desired tank height you may cut them according to your tank height The sensors should be recalibrated after cutting If you cut less than 50 of initial length of the fuel level sensors Strela A and Strela F you mustn t recalibrate the sensor but we would recommend doing that The available lengths of sensors are the following 350 400 500 600 700 1000 1400 and 2000 mm It s possible to produce sensors with any length that is so called composite sensors sensors that consist of 2 or more parts Sensors have built in supply voltage stabilizer and sensor output doesn t depend on onboard voltage Sensors have built in algorithm of data filtration and averaging that allows us to receive smooth fuel data You can change averaging settings in Strela D232 and Strela D485 sensors Data averaging in Strela A
7. Fuel level sensors Strela User manual 12 01 2012 Sapsan Control Co Ltd www skontrol ru Russia Chelyabinsk 2012 Fuel level sensors Strela User manual Content Description of fuel level sensors Strela css eee e eee e eee eee 3 Rennes fee EE E E 4 Short description of sensor product eiii ie 6 MAIN 8 PN NN 9 Installation of fuel level SENSOF cccccavssecececcuseeuarsnesecuauseesecuaraeesearaeseeeueeseauareneseauarsneseaeasues 9 NSA SHC OS srta reis 10 CallDravlOn Oh a TANK eines ads 13 Sensor Strela performance testi 14 Savice NA application MOUC iaa 17 Transportation and Storage ararananrnrnenennnrnnnnnnnnnnnnrnrnrnrnnnnnnnnnneneneneneneueuennnnnnnrnnunnnnnen unne 18 Manufacturer s warranty x xe ee ee e e e e e ee Keene 18 Appendix A DIMENSION Samira agree 19 Fuel level sensors Strela User manual Description of fuel level sensors Fuel level sensors STRELA are used for petroleum oil and lubricants They enjoy wide application in automotive telematic systems for fuel level measurement and recording such as Intellitrac GoSafe Enfora Teltonika Various interfaces provide a suitable solution for all telematic systems Fuel level sensor FLS for short Strela is a capacitive fuel level sensor without movable parts Two aluminum tubes create a capacitor plate its capacity depends on level inside tubes FLS Strela is not intended for water measuring with water inside tubes the output signal coincides
8. P 51330 10 99 is specified Marking method is labeling by means of double sided sealing tape of a sign plate executed on a film by a silk screening method providing marking safety during all term of operation Sensors are marked the following Stela X L Z P where X sensor type type of output signal A F PP D232 D 485 etc L length of measuring part mm Z firmware version optional parameter P version marker without electric coupling of sensor body with galvanic isolation optional parameter Example Strela D232 500 PMY sensor with RS 232 interface initial length 500 mm carbon plastic body with isolated ground Fuel level sensors Strela User manual Delivery set In the set there are sensor 4 m cable gasket screws and passport Fig 2 Delivery set Installation of fuel level sensor It is recommended to install FLS Strela in the center of a tank in addition to vehicle level sensor In some cases when vehicles are used on rugged terrain and tank shape is symmetric the installation of TWO FLS is recommended In this case you need to place them diagonally by opposite side walls of a tank FLS Strela can be installed instead of truck level sensor with the same flange SAE 5 pin standard fastening for float fuel level sensors in CIS countries But in this case you should take into account that 1 For better measurement the best place for FLS installation is geometric center of
9. able sensors or more than 40 of cuttable sensor was cut The problem may also be caused by damage of sensing element doesn t work Dead zone below 1 Dry sensor drain water from the tank Eliminate mechanical short Circuit Check resistance between sensing element pipes when sensor is off by circuit analyzer Resistance value must range from 460 to 500 k Ohm Replacement Check close sensing element electrodes by metallic object if sensor output signal doesnt change then sensor is out of work Replacement Check Submerse sensor into fuel it works properly after it passes dead zone Fuel level sensors Strela User manual Breakthrough Description fuel level is over Check by lowest range real value sensor gives error submersion of F lt Fmin from time to time sensor into the fuel 1090 Type error occurs at sensor the output signal is immersion on the level close proportional to to maximal one or on any sinkage other level by water short out If error changes to error Oscillator frequency equal to 0 then the problem is caused by water in the fuel Cause measurement fluid is different from diesel fuel or petroleum Circuit shot of measuring element by water in tank Sporadic from time to time Service and application note Sensor operation requirements are stated in sensors certificate To avoid sensor breakdown do not expose sensors to aggressive env
10. and Strela F must be defined while making an order before production Sensors have self diagnostic capabilities There are sensor series electrically not connected to ground Such sensors with carbon fiber body are marked PMY and can be powered directly from battery Fuel level sensors Strela User manual Technical data Table 1 Sensor model N P m 00 A Y D A lt lt d d i i NN Strela PP Resistance equivalent Ohm Serial interface Protocols Omnicom Modbus frequency Hz bok lt Y Type of output signal gt gt O O o o MO MO c c lt lt L Fuel level 0 0 5 2 5 Fuel level 100 4 5 Upto 10 ele Oni et 0 01 0 01 1 1 1 10 measuring scale not above DC supply voltage V 12 24 Range of low measurement values of fuel level from immersion depth of FLS measuring part mm 1500 1500 According to GOST 37 003 002 85 Range 800 Ohm 3500hm 90 Range of upper measurement values of fuel level from immersion 200 4000 depth of FLS measuring part mm Limits of permissible basic reduced measuring uncertainties of level to the measuring part of FLS Not above 0 5 Limits of permissible additional relative measurement error caused by ambient temperature change for every 10 C Not above 0 5 Setting time of working mode sec not above Self diagnostic feature Allowed cutting value Voltage can sometimes drop below 10V on
11. by min and max tank volume greater value by half empty tank Get new proper values of sensor output signal and write them down into the table Fuel level sensors Strela User manual Sensor Strela performance test Resistance between pipes works out about 500 kOhm If value is a sequence less you should check whether there is a contamination between pipes Strela AO Without fuel immersion working sensor voltage at the output in reference to gound must range from 0 1 to 1 2 V depending on cutting Full tank output voltage may be 3 4 4 5 V depending on cutting Strela A1 Without fuel immersion working sensor voltage at the output in reference to ground must range from 0 1 to 2 5 V depending on cutting Full tank output voltage may be 8 10 V depending on cutting When sensor touches water diagnostic code is 1 4 V It is possible to produce versions with decreased output voltage under order Strela F Without fuel immersion working sensor frequency at the output in reference to ground must range from 600 to 798 Hz depending on cutting Full tank frequency may be equal to 1300 1600 Hz depending on cutting When sensor touches water the diagnostic code is 340 Hz Averaging time of frequency cuttable short sensors is 24 seconds 16 seconds for frequency cuttable sensors Strela PP Without fuel immersion working sensor pulse packet at the output in reference to ground must be 600 750 pulses depending on cutting Full ta
12. ironments electromagnetic fields as well as mechanical and weather loads that exceed determined parameters in the present guide Do not connect sensor to devices which have interface that fails to meet the specification indicated in present performance specification and detailed engineering drawings After sensor installation on vehicle or equipment it is recommended to seal all electrical connections Sensors repair must be done by qualified staff that has repair certificate An exterior check is essential before introduction sensors into service If there are mechanical damages cracks shears dents etc on the sensor than sensors introduction into service is not allowed Sensors service must be done by staff that studied the device its mode of functioning and all instruction indicated in sensor certificate It is recommended to use proper grade diesel fuel that matches the range of temperature summer winter arctic according to GOST 305 Maintenance support Product does not need maintenance support Maintenance repair Product is repairable The manufacturer provides repair kits Fuel level sensors Strela User manual Transportation and storage Transportation The sensors transportation must be done in enclosed transport of any type that can provide protection for sensor against mechanic damage and exclude impact of atmospheric fallout onto package During air transport sensors are places in heated press
13. nk pulse packet must be equal to 1300 1600 pulses depending on cutting When sensor touches water the diagnostic code is 340 pulses packet Packet communication frequency is one minute for work mode and 15 seconds for test mode see fig 1 Diagnostic error codes coincide with the codes of Strela F Tab 6 Strela D232 and D485 The error codes are transferred with standard protocol see Tab 6 The values of output signal of sensor not immersed into fuel are listed in the table 7 See error diagnostic codes in table 8 If you experience any problems with fuel level sensor work you need to fill in the reclamation on the website www skontrol ru en and send it to the manufacturer 7 Fuel level sensors Strela User manual Table 6 Errors diagnostic code No A F 227 Fout 485 Error description Error code H 1 Sensor is not calibrated ERROR NO CALIBRATION at lovvest and upper point 2 Sensor is not calibrated ERROR NO UP CALIBRATION at upper point 3 Oscillator frequency is ERROR_NO GENERATOR equal to 0 5 4 Divided by zero sensoris ERROR_ZERO_DIVIDE calibrated at one and the same point 5 Reading error EEPROM ERROR EEPROM___________ Breakthrough upper range ERROR FREQUENCY ABOVE F gt Fmax 10 KA Ted F lt Fmin 10 ter are NNN short out CIRCUIT Table 7 Values of output signal of sensor not immersed into fuel CUTTABLE SENSORS Level of output signal of sensor not immersed into fuel Output
14. read some silicone sealant on the gasket Fix a sensor with screws or with bolts in case of standard mount structure According to wiring diagram in the passport connect minus side to ground plus side to power 6 30V FLS output to monitoring system input Be aware of incorrect connection FLS may be burned out Y Q Please follow sensor connection circuit into vehicle electrical system Don t mix up cables Wrong connection may bring sensor out of operation Don t apply supply voltage over 30V Power 7 brown Output signal yellow green or black Power blue Fig 6 Strela A Strela F Strela PP connector and wiring Fig 7 Strela D232 Strela D485 connector and wiring Table 1 StrelaD232 Strela D485 a brown S 2 4 blue gt O 3 Rx RSA gt Yellow green 4 IM RSB Bak Fuel level sensors Strela User manual Calibration of a tank The following table is an example of tank calibration table The tank calibration consists in recording in the ROM of terminal or AVL software the conversion table of sensor output signal voltage frequency pulses and others to fuel volume value Tank calibration 1 Stop vehicle on the flat part of the road road angularity must be minimized 2 Discharge tank completely 3 Add fuel till sensor will begin to change indication Write added fuel value into the table 4 Add fuel into tank by 10 50 liters lovvest value
15. uel rest The sensor may be used in combination with standard fuel level indicators Equivalent of sensor resistance corresponds to the range 800 Ohm 350 Ohm 90 Ohm As a part of GPS monitoring system sensor has one fail the voltage of analog input depends not only on sensor output but also on standard indicator resistance and vehicle electrical system voltage The accuracy of this sensor type is in between standard sensor minimal accuracy and FLS Strela A1 or Strela AO Strela F The fuel level sensors Strela F have greater accuracy and indication stability in comparison with Strela A The tank fuel level is coded by frequency that linearly varies by changing of fuel level The signal format is meander 50 pulse height is equal to half of supply voltage Currently such terminals as for example GOSAFE support these sensors Main advantages v High resistance to external pickups poor ground and other interfering signals due to great pulse height v No loss of data quality on terminal in compartment with analog output Fuel level sensors Strela User manual Strela PP The fuel level sensors Strela PP have greater accuracy and indication stability in comparison with Strela A The output signal extends with pulse packet Packet communication frequency is 1 Minute for working mode and 15 seconds for test mode Pulse count in working mode codes measurable value from 500 to 1500 pulses Pulse count in test mode codes error type
16. urized modules The air in vehicles should not contain acid alkaline and others aggressive addictive agents Transport package with packed sensor must be sealed Sealing method should exclude access to packed sensor without removal of the seal Storage Sensors have to be stored in closed or other rooms with natural ventilation without artificially adjustable climatic conditions not heated rooms It is recommended to store sensors in the original package Storage conditions of sensors in original package correspond to category C according to GOST 15150 Storage of sensors in the same facility with metal corrosive materials or materials containing aggressive addictive agents is not allowed Storage of unpacked sensors isn t allowed Manufacturer s warranty 1 Guarantee period is 18 month from manufacture date The manufacture date is indicated in product certificate 2 Manufacturer guarantees product working ability under keeping of service rules transportation and storage rules by customer 3 Sensors with damage cracks and shears dents impact marks chamber choking etc that occurred through customer s fault due to violation of service storing and transportation terms are not covered under warranty Group of companies SAPSAN Rossiyskaya str 194 Chelyaninsk 454091 Russia office skontrol ru www skontrol ru Fuel level sensors Strela Users manual Appendix 1 Dimensions d RAT ae Fo P h
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