Operating instructions RPM-8000-PRO
Contents
1. Telemetrie Messtechnik Schnorrenberg Th Operating instructions RPM 8000 PRO Board Net RPM 8000 PRO Cal Int KMT www kmt gmbh com TTLOut Analog Out Ext Cal In TMS e Telemetrie Messtechnik Schnorrenberg e Dipl Ing Werner Schnorrenberg Habichtweg 30 D 51429 Bergisch Gladbach Tel 02204 9815 52 Fax 02204 9815 53 Mobil 0171 8902387 Die gelieferte Ware bleibt bis zur vollst ndigen Bezahlung Eigentum des Lieferanten Bankverbindung Sparkasse K lnBonn Kto Nr 1900310663 BLZ 370 501 98 IBAN DE90 3705 0198 1900 3106 63 SWIFT BIC COLSD33 Operating principle Considering the simplest physical generator with a rotating The board net voltage ripple frequency can simply calculated wire winding inside a magnetic field produced by two magnetic by multiplying the alternator RPM with the number of poles poles one pole pair north and south the output voltage is a e g 12 2 24 and the number of phases 3 12 2 3 72 sine wave blue line with one cycle per revolution After rectification with diodes we get an alternating DC voltage with 2 pulses per revolution black line and a resulting average voltage brown line Alternator By connecting to an automotive cigarette lighter socket the measurement unit RPM 8000 PRO senses the small AC ripple of the vehicle board net DC supply voltage and generates on its outputs both a TTL digital pulse train and an analog voltage signal These signals are per desig2. DIV about 2000Hz Signal must be gt 200mV Version 2012 10 12 Technical Data are subject to change without notice 180 E ap i a Version 2012 10 Signal measure at 1300 RPM More noise but Signal i IS still OK and RPM8000PRO works a ay I i 4 ka an ee e e o E a detai oye 7 f e ae bomo nn 0 5V DIV connection on car cigarette lighter av VE oY r MASERT LEVEL Time 0 2ms DIV a P meas EIN y y HP A B TIME DIV AND DELAY TIME B D A A VARIABLE R i e TRACE DELAY TIME MULT N SEPARATION RN HORIZ DISPLAY AIN N ALT Boy D X Y ae a i 0 5V DIV x vorn DIV POSITION uncat jan PULLXS MAG g 13 Technical Data are subject to change without notice
3. red LED stops flashing and the green LED is permanently illuminated The calibration data is stored permanently in the device and therefore is not lost when power is turned off The data is only overwritten when the device is recalibrated The Cal Int button should not be pressed while using the external calibrated process The RPM 8000 PRO is now set to the actual speed of the shaft with reflector tag and is shown on the screen A DC voltage of 1V per 1000 rev min is applied to the analog output Version 2012 10 5 Technical Data are subject to change without notice RPM Laser CAL general function 2 1 OPERATING INSTRUCTIONS Ce Version 02 09 Laser Revolution Counter DT 10L Item No 12 26 24 Intended use This measuring equipment is an optical rev counter with a precise measuring laser for use in priva te and commercial fields The measurement is carried out via reflection Self adhesive reflective markers are provided and can be fixed to revolving objects The rev counter emits a red laser beam which is reflected by the reflective marker A photo diode inside the rev counter records the reflec ted laser light and analyses it Due to the precise laser beam even small objects with a large clea rance of 5 to 50cm can be measured The measured values can be read in RPM Revolutions Per Minute in the 5 diait display or as an event incremental counter The appliance can be operated with a 9V battery or with an optional mains sup
4. suitable Alkaline battery can be order with the following item number Item no 65 25 09 please order one Try to use only Alkaline batteries since they are powerful and durable gt gt Altematively the measuring device can also be operated with an optional mains supply adapter via the connector on the side 3 The DC plug of the mains adapter has to have the following characteristics Measurements Inside outside 2 1 5 5 mm Polarity Inside positive pole outside negative pole Output voltage 9 WDC stabilized Initial Operation By pressing the button MEAS 1 the rev counter is turned on and the laser is activated The measuring process starts and the device works as long as the button is held down Always point the measuring device with its laser outlet 5 away from the body and do not look directly into the outlet during the measuring measuring aj measunng preparation Cut off a piece of about 12mm length from the provided self adhesive reflective foil The surface has to be dry and free of dust and grease attach the piece to the spindle or similar to be measured A Ensure a good contrast light dark if necessary paint the objects to be measured black in the area of the rotating reflective marker The non reflecting part has always to be bigger than the reflective marker Revolving parts have to come to a halt before the reflective markers can be attached secure the machine against incidental activat
5. Internal calibration When the vehicle tachometer registers a constant speed of 2000 rev min keep the Cal Int button pressed until the red LED stops flashing and is permanently illuminated Cal Int ANT www kmt gmbh com Analog Out Ext Cal In N Connection for LASER RPM tachometer Don t press the CAL button during external calibration Self detection of EXT Cal input Dig output Analog output 0 5V TTL 0 10V 4 Technical Data are subject to change without notice External calibration with laser based tachometer 2a Board Met RPM 8000 PRO A TTL Div TTL Cal Int KMT www kmi gmbh com TTL Out Analog Out Ext Cal in d i re JE N Cigarette lighter plug External laser tachometer RPM LASER CAL LEMO BNC adapter cable Attach a reflector tag approximately 10 mm long to the calibration shaft crankshaft Plug the RPM 8000 PRO into the cigarette lighter socket outlet or connect directly to the battery Make sure polarity is correct when connecting to the battery Start engine turn on lights and rear window heater turn off the air conditioning system and other inductive loads run engine at constant no load speed connect TTL output from laser to Cal Ext In jack on the RPM 8000 PRO Point the laser beam at the reflector tag at an angle of about 90 The RPM 8000 PRO is calibrated when both the laser and the RPM 8000 PRO show the same speed the
6. d Last as the recent value REV Mode The most recent value is displayed The measuring results are kept in memory until the next measuring Disposal Electronic products are a raw material and do not belong in household waste When the device has reached the end of its service life dispose of it in accordance with the current statutory regulations at the communal collection points Disposal in the dome stic waste is not permitted Disposal of used batteries rechargeables You as end user are legal obliged Battery Regulation to return all used batteries and rechar geable batteries disposal of them in domestic waste is not permitted x x Technical data Contaminated batteries rechargeable batteries are labelled with these symbols to indicate that disposal in domestic waste is forbidden The symbols for dangerous heavy metal constituents are Cd Cadmium Hg Mercury Pb Lead You can retum your used batteries rechargeable batteries free of charge to the official collection points of your community in our stores or everywhere where batteries or rechargeable batteries are sold You thus fulfil your statutory obligations and contn bute to the protection of the environment Operating voltage 0000 4 WOC battery block or 9 WDC stabilised via extemal DC connector Power input APP AMA Display een TRETEN 5 digit LCD Display reload is Measuring range RPM 2 99 999 RPM REV 1 99 999 Display re
7. d RPM 8000 PRO signal successful calibration also shown by luminescent LED s The measuring range of the analog output can be varied on demand via jumpers e g to 0 5 1 0 or 2 0 Volt per 1000 rev min The TTL output can also be scaled with a frequency factor of 1 8 or 1 16 and therefore adapted to the resolution ability of attached measuring systems For software setting purposes the number of pulses per e g 80 120 revolution is indicated by pressing the yellow TTL button independently of the digital output divider TTL Div The instrument saves the calculated calibration data in non volatile memory until the next calibration Version 2012 10 3 Technical Data are subject to change without notice LCD screen Indicates the actual speed or the number of pulses per revolution is indicated by pressing the yellow TTL button SYNC OK LED Lights up when RPM8000Pro is synchronized with the engine speed Power ON LED Lights up when 12 42V is applied to the cigarette lighter TTL out output Divider for digital output 1 1 or 8 1 or 16 1 For example 4000 Hz TTL at div 1 position 500 Hz TTL at div 8 position 250 Hz TTL at div 16 position Version 2012 10 Functions and display To battery or cigarette lighter sockets 12 42V j ll H NE Lit Board Net RPM 8000 PRO TTL button Switches the screen to number of pulses per revolution as long as the button is pressed
8. d appears on the screen and the analog output returns 1V per 1000 rev min During calibration and during the entire test you should turn on all resistive loads such as lights and rear window heater and turn off all inductive loads such as the air conditioning system sliding roof power windows and ventilation You shouldn t use an external laser tachometer during internal calibration Version 2012 10 8 Technical Data are subject to change without notice Starting up the RPM 8000 PRO revolution counter The RPM 8000 PRO is designed to operate at 12 42V DC You can use our battery adaptor to connect directly to battery terminals Red Plus Black Minus A polarity mismatch will inevitably cause damage to the device and voids the warranty When connecting to the vehicle electrical distribution system instead of the cigarette lighter socket always make sure the polarity of the connection cable is correct If you have contact problems with some makes of cigarette lighters you should use an adapter cable from a different connector type to a standard socket to avoid inadvertently reversing the connection terminals To improve the signal to noise ratio additional resistive loads such as rear window heater and lights not gas discharge lamps should be turned on All inductive loads such as air conditioning system air blower light dimmer sliding roof and door opener should remain off This process increases the accuracy of
9. e vehicle electrical supply briefly switches to battery backup mode as the high Faraday capacity of the battery is not able to decay quickly enough To eliminate this effect switch on additional resistive loads lights window heater etc e Some diesel engines in higher class cars are equipped with overrunning alternators In cases of extremely high decelerations this may cause a short time rotational speed difference between engine and alternator This is important to know because the RPM 8000 PRO actually measures the number of revolutions per minute of the alternator e f the RPM 8000 PRO is operated from the vehicle electrical distribution system while the engine is off and the ignition is on it may synchronize with arbitrary noise signals from the vehicle electrical distribution system the reference signal from the residual ripple is not available In this case the green O K LED is energized before the engine is started and the system must be reset by removing the connector from the cigarette lighter socket for a short period The same applies if the engine is stopped and the green O K LED does not go out e Onsome luxury cars the RPM 8000 PRO may not work when plugged into the cigarette lighter socket This is caused by interference noise induced in the cable looms The interference noise is generated by the considerable amount of electronic hardware in these models and is within the synchronization spectrum of our RPM 8000 PRO To a
10. ensure a reliable record of the running events Avoid diffu sed light from other light sources Press the measuring button 1 once bnefly to turn on the display The display has to show REW If not you can switch the measuring function with the MODE button 6 Version 2012 10 Press the measuring button 1 and hold it down The display shows REV and the laser is active f Direct the laser beam with a maximum angle of 45 to the object to be measured The distance between rev counter and marker can be between 5 to 50 cm When correctly reflected the display show a target symbol ttl in the upper right comer which flashes in time with the measuring or remains visible at higher throughput speed The display 4 shows the number of recorded events If OL is displayed the measuring range has been exceeded After measuring just release the measuring button MEAS 1 The appliance tums of after ca 10s automatically Anew measuring always starts with 0 d Reading out the measurment memory The rev counter has a memory for the measuring values where the smalles value Min the most recent value Last and the highest value are stored To read out the memory proceed as fol lows Press the button MEM 2 briefly The display tums on Every further pressing switches to the next measuring memory value The following displays are possible RPM Mode Max as maximum value Min as minimum value an
11. inly due to the ignition system and is relatively straight forward to eliminate In Diesel engine vehicles however the main noise source is from the electronic injection system and due to the spectral content of the injection signals is very difficult to decouple from the relatively small signal of interest from the alternator This technical background helps to explain the different accuracies of the RPM signal which are achieved approx 0 5 for Petrol and approx 1 5 for Diesel engines To improve the signal to noise ratio additional resistive loads such as rear window heater and lights not gas discharge lamps should be turned on All inductive loads such as air conditioning NAMA A N MN Ki N All inductive loads such a system air blower light dimmer sliding roof and door opener should remain off This process increases the accuracy of the output signal in every case LANA VV VV VAY Version 2012 10 2 Technical Data are subject to change without notice General description RPM 8000 PRO offers a discerning solution for automotive RPM measurement without an additional sensor the practical instrument is simply connected via a standard jack to the cigarette lighter socket and the RPM is shown directly on the LCD display You even have the choice to output the data as an analog voltage 1 Volt per 1000 rev min or as a digital pulse sequence 1 1 ripple of the alternator TTL The smart measuring principle is based o
12. instructions The warranty is voided in these cases A tnangle containing an exclamation mark indicates important information in these ope rating instructions which is to be observed without fail A i The hand symbol is used to indicate where specific hints and information on hand ling should be given This device conforms to CE and meets the necessary european regulations Due to safety and license reasons CE it is not permitted to make alterations and or changes to the electrical appliances on one s own authority To ensure a safe operation the user must follow the safety instructions and waming notices that are included in these operating instructions The product is equipped with a laser of laser class 2 according to EN 60 825 1 1994 CAUTION LASER RADIATION DO NOT STARE INTO THE BEAM CLASS 2 LASER RPODUCT Output lt i Wavebongth 635 67 00m EN 60 525 1 1934 A1 2003 A2 2001 The laser outlet is marked with the triangular laser caution label Never look into the laser beam and never point it at people or animals Laser radiation can cause damage to eyes or skin Do not point the laser beam at mirrors or other reflecting areas Any inadvertent misdirecting of the beam may harm people or animals Therefore only the provided self adhesive reflective mar kers are to be used for measuring A If the laser caution label 7 placed on the device should not be printed in your language use the provided lase
13. ion b Measuring of Revolutions RPM mode Press the measuring button 1 once briefly to turn on the display The display has to show ARPM If not you can switch the measuring function with the MODE button 6 Press the measuring button 1 and hold it down The display shows RPM and the laser is active Direct the laser beam with a maximum angle of 45 to the reflective marker The distance between rev counter and marker can be between 5 to 50 cm When correctly reflected the display show a target symbol el in the upper right comer which flashes in time with the measuring or remains visible at higher revolution speed The disply 4 shows the revolutions in RPM Revolutions per minute If OL is displayed the measuring range has been exceeded Measuring failures can occur on very slow rotating objects this can be prevented by attaching more reflective markers evenly around the object The measuring result has to be divided by the number of reflective markers After measuring just release the measuring button MEAS 1 The appliance tums off after ca 10s automatically Anew measuring always starts with 0 0 c Measuring with counter REV mode The counter can be used to count items on conveyors etc With this each recording is counted consecutively as an event When using the counter the laser has to be directed to a black or non reflective area bet ween the objects in order to
14. n linear to the alternator RPM and by the linear drive belt relationship also to the engine RPM The scaling factor can determined by the relation between the effective diameters of the engine and the alternator pulleys To imagine a three phase generator we add two independent wire windings Now we have 3 sine wave voltages which are spaced about 120 out of phase After three way rectification with six diodes the result is an alternating DC voltage with 6 Accuracy pulses per revolution black line and an increased average Next diagram shows a part of a test measurement of a famous voltage against the generator with one winding German automobile manufacturer The RPM reference signal was obtained from the car internal CAN bus which will also used for the electronically engine management To verify the dynamical performance the RPM signal was provide with an additional scaling factor of 1 02 actually both curves are congruent In practice generators for automobiles have more than two poles In most cases here we find 12 poles 6 pole pairs and sometimes also 16 poles 8 pole pairs For the first one we get from every phase 6 cycles per revolution and after rectification an alternating DC voltage with 36 pulses L 1 L a In practice the generated alternator ripple also includes electrical noise and disturbances from other electrical devices and loads connected to the vehicle supply In petrol engine vehicles this is ma
15. n an analysis of the ripple balance of the supply system characteristic for all automotive alternators The frequency TTL of this ripple amounts to about 100 to 120 pulses per engine rotation and therefore delivers good dynamic measuring results Though the frequency is proportional to the engine RPM it also depends on the gear transmission ratio from crankshaft alternators and on the number of alternators poles and phases This makes the calibration of the input signal to the actual measured RPM necessary The latest version of the RPM 8000 PRO now offers two elegant options e Internal calibration The internal calibration assumes a steady engine RPM of 2000 rev min drive e g in the 2 gear and had hold 2000 RPM which can be monitored by the automotive tachometer By pushing the Cal Int button and keep the button pressed until the red LED stops flashing and is permanently illuminated e External calibration option A laser RPM RPM LASER CAL is needed for this option A reflector tag is mounted on the main belt disc and scanned by laser beam The TTL output of the laser instrument is connected via cable to the Ext Cal In input of the RPM 8000 PRO and delivers one pulse per rotation don t press the Cal Int Button for Ext By comparing the pulse sequence with the measured pulse frequency the instrument calculates automatically the relationship between ripple balance and speed Identical displays on laser an
16. onally It can be assumed that safe operation is no longer possible if the device is visibly damaged the device no longer works and the unit was stored under unfavourable conditions for a long period of time or ifit has been subjected to considerable stress in transit Technical Data are subject to change without notice RPM Laser CAL general function 2 2 Installing Replacing batteries A 9V battery block e g type IEC 6F22 is required for operation To insert replace the battery proceed as follows Unscrew the battery compartment lid on the back 8 and remove the lid Connect the new battery with the correct polarity to the battery clip and close the battery com partment in reverse order It is necessary to change the battery when the display can no longer be read properly or when the appliance cannot be switched on anymore In order to avoid damage to the appliance from leaking batteries remove the bat AN tery from the appliance when you do not use the appliance for a long time For the same reason empty batteries have to be removed immediately Do not leave batteries lying around carelessly They might be swallowed by children or pets If swallowed consult a doctor immediately Batteries must not be charged shorted or thrown into fire There is a danger of explosion Leaking or damaged batteries may cause alkali burns if they come in contact with the skin Use apropriate protective gloves in such case A
17. ply adapter of 9V DC output voltage No other use is permitted The device is to be operated solely with the sta ted voltages Never try to operate the device at different voltage or with other battery types Any usage other than described above is not permitted and can damage the appliance Beyond this there is the risk of injuries e g to the eyes No part of the product may be modified or rebuilt Observe the safety instructions absolutely Contents Laser Revolution Counter DT 10L 9V battery block NEDA 1604 IEC 6F22 3 self adhesive reflective markers 20cm Operating instructions Description of individual parts 5 N wo b 1 Button for measuring mode MEAS 2 Button for measuring memory MEM 3 DC connector for the mains supply adapter 4 illuminated LC Display gt laser outlet 6 button to choose the measuring mode MODE 7 laser caution label 8 battery compartment for 9V battery block 9 TTL output via LEMO plug Version 2012 10 Safety instructions Please read the entire operating instructions before using the product for the first time they contain important information regarding the correct operation The guarantee is rendered invalid when damage occurs as a result of non com pliance with the operating instructions Liability for any and all consequential damage is excluded We do not assume any liability for material and personal damage caused by improper use or non compliance with the safety
18. r caution labels in the respective language If operating devices other than the herein stated or other pro can result in dangerous beam exposure Keep measuring devices and accessories out of reach of children They are not toys On industrial sites the accident prevention regulations of the association of the industrial workers society for electrical equipment and utilities must be followed In schools training facilities hobby and self help workshops operating chargers and the acces sories should be supervised by qualified trained staff Avoid the operation under unfavourable ambient conditions This damages the sensitive electri city in the inside of the charger and thereby possibly leads to danger to life of the user Unfavourable ambient conditions are Excessively high humidity gt 90 rel condensation Moisture dust and flammable gases vapors or solvent petrol excessively high ambient temperature gt ca 50 C Strong vibrations Do not switch the measuring instrument on immediately after it has been taken from a cold to a warm environment Condensation that forms might destroy your device Leave the device switched off and wait until it has reached room temperature Do not leave packaging material unattended It may become a dangerous toy for children If you have a reason to believe that the device can no longer be operated safely disconnect it immediately and secure it against being operated unintenti
19. ses per revolution LED red Calibration OK frequency divider 1 1 1 8 or 1 16 TTL Div for TTL out start internal calibration show the number of pulses per revolution is indicated by pressing the yellow TTL button independently of the digital output divider TTL Div BNC for TTL output BNC for analog output BNC for external calibration input 3 pole Tuchel for connecting to vehicle electrical distribution system through cable with connector for cigarette lighter 150 x 75 x 40mm 450g without connection cable anodized aluminum 5 C to 70 C 20 to 80 C 20 80 5g military standard 810C curve C shock in all directions 100 g 10 Technical Data are subject to change without notice KMT Kraus Messtechnik GmbH Gewerbering 9 D 83624 Otterfing Germany 08024 48737 Fax 08024 5532 Home Page http www kmt gmbh com Email info kmt gmbh com RPM8000PRO Test signal output Connection Test cable Mini Lemo 2 pol to BNC You can use the same cable what delivered with LASER CAL co ee ee DE Test Point Version 2012 10 11 Technical Data are subject to change without notice Signal measure at 1300 RPM Direct connection on car Battery via adaptor LEGE f a N mes N l A B TIME DIV AND DeLay Time a A mien VARIABLE DELAY TIME MULT TRACE EF SEPARATION f ry Connection direct on battery Less noise Signal is very good and RPM8000PRO works Value 500mV DIV 0 5ms
20. solution RPM 0 1 2 999 9 RPM 1 gt 1000 RPM Ja E gt Ee acces 0 05 1 Digit Measuring time 0 5 s gt 120 RPM Measuring distance 5 50 em Automatic cut off Wwithout measuring after appr 10s Operating conditions 0 to 50 C 10 to 90 SorF not condensing ee Ss ses ca 1519 Dimensions LXWXH 2 2 0 160 x 58 x 39 mm Technical Data are subject to change without notice Internal calibration using the Cal button RPM 8000 PRO 2 000 When a constant speed of 2000 rev min is registered by the vehicle tachometer press the Cal Int button until the red LED stops flashing and remains constantly illuminated Cal Int KMT www kmt gmbh com TTLOut Analog Out Ext Cal In Internal calibration requires that the engine is running at a speed of 2000 rev min as shown on the tachometer in the vehicle ideally calibration should be carried out when the vehicle is being driven that is moving When this speed is reached press and hold Cal Int button until the red LED stops flashing and is permanently illuminated Calibration is than completed and the calibration value is stored permanently in the device even after power is turned off The calibration value is only deleted if the Cal Int button is pressed again the old calibration value is then replaced by the new value The same applies to external calibration The actual engine spee
21. the output signal in every case Start the engine connect the coiled cable to the Board Net socket and plug the other end into the cigarette lighter socket in the vehicle Make sure that the red Power LED on the RPM 8000PRO is illuminated After a short delay the device will detect the engine speed signal Successful synchronization is signaled by the green O K LED on the RPM 8000PRO The device is now in the ready state and all measuring signals are available at the output If synchronization has not taken place after a few seconds this means that strong noise signals from vehicle loads have been superimposed on the residual ripple from the vehicle electrical distribution system In which case briefly press the accelerator and synchronization will be achieved after returning to no load speed You can now carry out the first tests by increasing and reducing the engine speed in the idling state and by monitoring the LCD display and the voltage at the analog output If the voltage tracks the engine speed synchronously the device is functioning properly on your vehicle Trouble shooting e The use of cigarette lighter sockets in the rear seating area or in the car trunk in some vehicles can cause additional interference noise to be injected into the long line routes You should therefore repeat the test at the socket on the dashboard or on the driver s console e A loss of synchronization may occur when the engine speed drops In this case th
22. void this problem connect the device via the supplied adapter cable to the battery or to a plus terminal nearest the battery Make sure the polarity of the adapter cable is correct Should none of the above measures prove successful please contact us at Mr Plaksin plaksin kmt gmbh com Version 2012 10 9 Technical Data are subject to change without notice Supply voltage Power consumption Analog output Digital output Synchronization frequency range Synchronization time Calibration Displays Rotary switch Red button Yellow button Connectors Dimensions Weight Material Operating temperature Storage temperature Humidity Vibrations Version 2012 10 Technical details 12 42 V 80 mA maximum adjustable Plug in bride 0 5 V 1 V or 2 V per 1000 rev min Standard 1V max delay 70 ms accuracy gt 0 5 for petrol and 1 5 for Diesel engines output impedance 2 ohm 10 mA frequency range approximately 500 Hz 10 kHz set with frequency divider 1 1 1 8 1 16 TTL level 0 and 4 V output impedance 130 ohm Max delay 0 1 2 ms jitter 0 1 1 800 Hz 2 kHz 1 2 seconds internal based on 2000 rev min indicated on tachometer in vehicle external with laser RPM LASER CAL and reflector tag on crankshaft LCD screen 4 position for engine speed frequency or conversion factor frequency engine speed LED red Power LED green Synchronization OK LED yellow Number of pul
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