Revolution counter sensor

) around a fixed axis. Mar 23, 2018 · The Hall effect sensor works on the principle of the Hall effect, which states that whenever a magnetic field is applied in a direction perpendicular to the flow of electric current in a conductor, a potential difference is induced. precision as well as improved measuring speed and sensor In interaction with digital or analog sensors, these instruments U 410 – Revolution counter  min, m, m/hr, m/min, mph, rph, rpm, Total Revolutions, yd. Typical applications include winding and spooling equipment, position  26 Jun 2019 But now we are using counter having more sophisticated and highly precise sensors and electronics. Counting revolutions per minute (RPM) of rotating shaft (tachometer applications); Counting parts passing through the production  Figure 4-6 Revolution counter with prediction mode disabled/enabled . Based on a CAPTHOS sensor, CAP8533 is providing accuracy and extended features. Revolution counters count the number of rotations in a variety of equipment. REVOLUTION COUNTER. SomeIslandBoy · Registered. This counter may be connected to mechanical equipment directly via the shaft or using gears and pulleys that can change the ratio of the count. Mechanical Resettable 5 Digits Display Rotary Counter Up Down+Hall Proximity Switch Sensor 4. (Model ELCr 5 / ELCR6) Direct drive-Suitable for 6000 RPM. Preset Counters with tachometer functions are also available. | Add to Compare Hall Effect Speed Sender 12V 4Pulse/Rev M18x1. 02 H6 A/C Revolution Sensor. Stroke or ratchet counters increment by a reciprocating 40° to 45° movement to the shaft. 00 / Piece DROK Auto Digital Counter, 0-999999 Tally Counter Panel Gauge, 6 Digits Mini Customer Traffic Counter, Electronic Totalizer with Photoelectric Switch 4. com ,the Leading Trading Marketplace from China Tachometers (Revolution Counters) Tachometers (also known as revolution-counter sensors) are highly recommendedfor rotor-wing frames because they allow the autopilot to detect stall or another rotor failure (for rotor-flight it is the rotation of blades that guarantees lift not airspeed or ground speed). The interaction generates voltage spikes in the reed magnetic sensors that are used as input signal to an electronic non-volatile counter, as well as its sole power source. They measures and indicates current Rotating Speed of Motor. 9Hz, 9999Hz, and 35KHz. 3. Revolutions per minute – a unit of measurement of rotational speed: the number of complete rotations made by the body (fidget spinner, wheel etc. Display Digits: 4 Digits; Display Type: Digital Concrete Mixer Supply offers quality low-priced replacement mixer parts and accessories, as well as a number of fabrication and repair services to keep your business moving forward. The Trumeter range of totalising counters incorporates Electronic, Electro-Mechanical, Mechanical and Electronic Preset types. (This does not  Tutorial: Rev Counter. This part works with other components   Revolution Counter model LB-80-5 offers highly visible 5 digits, small footprint and long mechanical life. 1 to activate the … Shop for electrical counter and mechanical counter options at Grainger. (CW) and the value of the digital parallel-output velocity is positive. The rev counter is designed for installation in a dashboard (panel montage). Hall Effect Sensor based non-contact tachometer for electrical motors speed measurement The purpose of this project is to design and construct a non-contact type of Tachometer. introduces the RFC4800 Series of touchless angle sensors measuring angular position up to 360°, revolution counter and speed-without wear. 00. This equation shows the relationship between frequency and period as: Frequency = 1/Period. Generator Sender with Odometer/Revolution Counter 7/8-18, 4 Pulse; Instruments, Displays and Clusters. RFC4800 Series has a resolution of 14 Wiegand sensor products from POSITAL reflect the knowledge from a full decade of experience using Wiegand-effect base revolution counters. 100" or 1 mm lead screws. to/2zjmkx3 so 16 pulses per revolution: 8,000 RPM would be roughly 2200 pulses per second). In motion control systems the signal is often provided by a feedback device, such as an encoder or linear scale. Backorder Available. The word comes from Greek τάχος ( táchos "speed") and μέτρον ( métron "measure"). 25 over 8 weeks and get it now! QTY: May 20, 2017 · RPM = (Pulse Frequency in pulses/sec)×(60 sec/min)/(Sensor pulses/revolution) = Revolutions/Minute. 1-855-616-3827 info@rrs360. 2. REVOLUTION COUNTER SENSOR. Fast & Free shipping on many items! • Revolution Counters - Revolution counters are mechanical counters that record one count for each revolution of a shaft - used with material handling equipment, rapid transit vehicles, street sweepers, farm machinery, carts for recreational use • Rotary Counters - Rotary counters are designed to record a specified number of counts per rotation • Stroke Counters - Stroke counters record one count for each stroke –used for: copy machines, printing presses, cut-off machines, and part BY ED RAMSDEN Cherry Electrical Products Pleasant Prairie, WI. There are Maximum 34 kHz, suitable for all commonly used sensors Sensor wiring:brown---Power+;blue---Power-;black---signal. The TLE5012B GMR-based angle sensor is designed for angular position sensing in   Counting of quantities and events, display of position, speed and other measured values application possibilities by combination of counters & displays with rotary encoders and sensors Adding stroke, meter and revolution counters; Max. counter sensor and connect it to the temperature wire to get the air/fuel ratio  Counting the revolutions of a wheel. RPM meter with arduino DIY (IR sensor and 3D printed case) - Duration: 13:10. Genuine Audi Part # 4B0927807N - Speed sensor. Jun 16, 2019 · Mini Motor Speed Sensor -B from Amazon Motor speed sensor or work piece counting Using infrared detection, strong anti-jamming capability Schmidt trigger, high sensitivity, stable performance 5V Working voltage, black line output low level and white lines output high level 74HC14 Hex inverting high performance Schmitt trigger chip Preset Counters turn ON/OFF control outputs when the present value reach the preset value. It receives a signal from sensors and switches type "NPN" connected to his input. 4 Digital LED Tachometer RPM Speed Meter + Proximity Switch Sensor NPN COD. Revolution, Crankshaft or Camshaft Position Sensors are usually located on a gear wheel (phonic wheel), disks consisting of sectorized windows or rings of . (2 count intervals). If you have a 3-wire sensor, refer Counter Gear Speed display: 50 r/min D Position is warmed up,4th (O/D); Same as input shaft speed ← OK CHECK AND REPLACE ECM(See page 01–34) NG 2 INSPECT TRANSMISSION REVOLUTION SENSOR(NC) (a) Disconnect the transmission revolution sensor connector from the transaxle. Any information or recommendations will be most appreciated. Two output channels (wires) are needed to transmit its sensor data to the Vex. 13 Feb 2018 Up next. Just a simple means of counting the turns. 1 mm increments. S. Mechanical Revolution Counter Data sheet. , yd. Top-reading revolution counters are designed for use in most industrial applications. Oct 07, 2011 · Hi I have a coil winding machine that does not have a revolution counter. The latestdevelopments are sensors to detect speed, direction of rotation and bearing condition, which are now becoming standard for several modern train designs. that they function, it may be that they do not or wrongly so. I will require a method of counting the turns of my coils and I am looking for a digital 'Counter'. 4 out of 5 stars 23 $24. Fits A6, A6 Avant, A6 Quattro, RS6, S6. If the resolver sensor rotation is counter- . When using period measurement to monitor RPM, the RPM can be calculated by using the equation: RPM = 60/Pulse period x PPR Revolution Retail Systems provides cash recyclers and automated cash management solutions. Output Mar 03, 2016 · Some time we required to check the RPM of the motor while creating projects. Sensor Solutions offers a variety of products to measure a count with or without direction. Speed sensor and excitor (Fig. I am not only going to show how you can make your own, but also will mention the pros and cons of a few types of RPM sensors, mainly the IR October 18, 2014 By Ashutosh Bhatt. The device usually displays the revolutions per minute (RPM) on a calibrated analogue dial, but digital displays are increasingly common. 40) The speed sensor uses the variable reluctance magnetic sensing principle, whereby a cylindrical permanent magnetic core with a coil wire wound around it, mounted on the stationary hub carrier, axle casing or back plate, produces a magnetic field (flux) which overlaps the rotating excitor ring. 031. It's simple  Proximity Sensor Applications. 5. US $120. Input- Built in sensor. Inexperienced riders tend to pedal too slow which will put stress on their knees. Presented here is a simple rotation counter which helps you measure the revolutions per minute (rpm) of any rotating object. This voltage can be used to detect whether the sensor is in the proximity of a magnet or not. 0 of 1 people found the following Hi everyone, merry xmas and happy new year. Novotechnik, U. Counters & Count Controls • Model 48770-401 12mm proximity sensor Mechanical Revolution Counter Durant® Revolution Counters Revolution Counter (Model ELCr 5/ELCR6) Direct drive-Suitable for 6000 RPM 56 digit display, 8mm LED Supply-230V, 50Hz. DESCRIPTION: Mechanical Counter model LB-80-5 offers highly visible 5 digits, small footprint and long mechanical life. Counts precisely with 0. FFTQ-2121 Window Frame Fiber Sensor Free Fall Counting, 5*5mm Min. 5 of 5 Total Reviews: 26 Write a review. Our Tachometers, Process Meters, and Counters Provide a Range of Display Options for Industrial Processes. 7. The PM500 is a fully programmable process meter with two 4-20 mA sensor inputs that can be scaled to any user-selected units. 27 Apr 2017 0: Generated when a fault occurs in the counting signal of multi-revolution data while the encoder power supply (5 V) is ON. This type of sensing typically has options for 60, 120, or 240 PPR, and the pulses are relatively clearly defined and symmetrical. RRP $37. Average Customer Review: 4. Welcome to the premier industrial source for Revolution Counters. Aug 13, 2017 · It is a device which is used to measure the RPM (revolution per minutes) of rotating objects like a shafts or wheels etc. A Step by Step Tutorial on MotorVator programming. 2016 OBW 2. gas or water meters. , 5 VA / 12 to 24 V DC, 100 mA. Revolution Counter. 00-$130. This new counter is probably one of our most diverse counters. Features: - 4 values are displayed: rotation counter, RPM, max RPM and time of  24 May 2019 Hall Effect Sensor A3144: https://amzn. 99Hz, 999. VR: Which speed sensor  3 Sep 2015 The tachometer has a stopwatch attached to the revolution counter In the construction of variable reluctance sensor, we use ferromagnetic  11 Jan 2013 IN) # set our sensor pin to an input sample = 1000 # how many half revolutions to time count = 0 start = 0 end = 0 def set_start(): global start  1 Oct 2013 Cadence sensors allow cyclists to better control bike speed and effort for Pedal cadence is measured as pedal revolutions per minute. A little project I've been working on is a RPM display for my drill press using a A3144 hall effect sensor, an arduino uno and a 16x2 lcd display, I'm having some trouble getting the programming right so that the lcd display's a "0" rpm when drill is not running. Most scanners that are capable of reading a cam or crank sensor will generally allow you to see the values of the sensor in real time. The easiest to use counter in the S660 counter series, the S664 offers 12 DCV, 100mA sensor excitation and requires no programming to use. More info. A mechanical counter is extremely useful in high-speed automation, construction and retail. That way you can count the number of revolutions. Its price and features make it well suited for OEM equipment. If a gear is not available, a proximity sensor can be used to sense the head of a bolt attached to the shaft. Easy-to-read LCD/LED displays are provided. magnetic wrap, LED indicators, explosion proof sensors, target discs, circuits & enclosures. Genuine Audi Part # 8E0927807B - Speed sensor. 7 to 1327 In-lbs; Torque Sensor Type: Rotary. May 24, 2019 · Making a tachometer with arduino has never been so easy. e. In order to determine the required steering angle of the steered wheels the angle of rotation of the steering wheel is measured. Syst. The rpm value is calculated in this line: Another option is to add a magnet to the wheel, and a hall-effect sensor to the body. They are very essential in applications like Speed Control of Motors and close Loop Control System. Packaging include 4 Digit red counter x 1. many "ticks" counted by the wheel encoder represent one revolution of the wheel:. , the output device) after the Counter receives a signal for the third time. Supply-230V, 50Hz. Model : LC 62 These tachometers have a distinct advantage over revolution counter in that A light source is placed on one side of the disc and a light sensor on the other  This is how the sensor can count how many times the motor has rotated. ca: Tools & Home Improvement. The output pulses from Hall Effect Sensors, proximity switches, and gear tooth sensors can track count for each digital switching event using a Counter or PLC. This makes it perfect for: Counting how many times a door opens. The inductive position sensor is a rapidly growing technology to measure position. Measuring Speed, Angle, and Revolutions with Electronic Counters, Tachometers, and Digital Encoders. Using a simple test rig with a  9 Jan 1999 Rugged devices join the revolution in revolution · Hall vs. The OMDC-PU-E pick-up sensor operates at a 5 to 24 volt level producing a sharp square wave output, which may be fed into tachometer, closed-loop control, counter, or any If you are using a sensor configuation that produces multiple pulses per revolution this should be reflected in the NoSensors constant. A few days back when I was creating a project that time I required an RPM Tachometer to check the rotational speed of motor but did not have the RPM meter then I decided to make it myself as I know how to make it and I had all the equipment required. ◇ Gearless and batteryless revolution counter Evaluation of Pt1000 sensor output for high accuracy gas meter applications. The Length Counter displays the total length of cord in meters. Air Pressure; Sensor Repair Parts; Wiring/Harness per revolution. Cash recycling can help you reduce costs and cash on hand. 11. We can use an IR sensor module built into this project as an obstacle sensor instead of ultrasonic sensor. Rev counter does not move even when I press on the accelerator C1260 - Brake ABS/ESP > C1260 Steering Angle Sensor Circuit-Signal 5 Dec 2014 FEATURES. RESET & change direction switch (CB/DB) Direction-Auto-Add-Subtract. I used Hall-Effect Sensor - a3144. As the project requires measurement of very high rpm, a fast-switching device like a reed switch is used. Basically, this counter counts one digit every time the two  Digital counter tachometer to record and display speeds and revolutions and its counting. Operating temperature: 0 to 50¡ãC. Get Latest Price. The steering angle sensor as set forth in any claim 1, wherein the transmitter element is configured to output the transmitter field in the axial direction of the column. It counts once every time the two magnetic sensors are pulled apart or pass near each other. Rotary or direct drive counters increment ten (10) counts per each 360° rotation of its shaft. Counting a sliding object. Only has  22 Dec 2018 Maybe a faster sensor would be better for over 1000 rpm, but I rarely do any counter, // but it works all right with the input from the IR sensor. The high performace sensors are assembled using SMD mounting technology and can be used for revolution counters in absolute rotary encoders as well as in other applications, e. 5i Premium w/EyeSight Joined Oct 16, 2005 · 91 Posts A new digital revolution counter CAP8533 series is being released. The 4-Digit LED Display RPM comes with a magnetic proximity sensor switch. Make 4 payments of $9. A tachometer (revolution-counter, tach, rev-counter, RPM gauge) is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine. Revolution counters increment one count per each 360° rotation of its shaft. The ability to detect, convert, and display the input signal makes the PM500 an inexpensive solution to many industrial applications. 3. Once the system is installed properly and the sensor is adjusted the counter will only count if the drum spins in the mix direction, and will only count MIX revolutions if the drum is spinning at 6-18 RPM. (b) Measure the resistance between terminals of transmis-sion revolution Shopping for Cheap Counter at Manufacturer - Shande Electric Factory and more from counter house,digital timer counter,digit counter,encoder counter,counter digital,digital counter on Aliexpress. Please note: Zero position is at the counter end of the UniSlide and is not re-settable. A tachometer ( revolution-counter, tach, rev-counter, RPM gauge) is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine. A photoelectric sensor must sense a reflective  The Hall-Effect based sensor system is the singleturn stage of the absolute encoders. First find out if your sensor is using 2 wires or 3 wires. 57 $ 24 . Same is true for aftermarket Tachometers other than MMB. Find out more about some of the most common Get the best deals on Genuine OEM Instrument Clusters for Volkswagen Corrado when you shop the largest online selection at eBay. Expand your options of fun home activities with the largest online selection at eBay. Counting the movements of a lever. If the counter counts improperly after sensor ad justment then refer to the troubleshooting section. Install an electronic counter, totalizer or an hour meter on your machines and you'll always know where you stand with productivity or voltage use. 40. Technologies; Analog; 11 Myths About Inductive Position Sensors. Using existing Sensor with Sysdyne’s MRC-PRO counter If your existing sensor is still working but the counter is not, you can replace your counter with Sysdyne’s MRC-PRO counter. 033. com Revolution Counters; UniSlide® Revolution Counter (-RC) – Readouts in either 0. Its unique design provides ease of installation in otherwise difficult to reach areas. Counters. Mechanical counters require no power since they are incremented by movement alone. Sensors and Actuators A: Physical A revolution counter using a magnetic bubble device and permanent magnets has been developed that can count up/ down  In the case the resolver sensor rotation is clockwise. This revolution counter increments 1 count per revolution, is bi-directional and resets with the push of a button Very Easy Cadence Meter for Your Bike <$12: Cadence is the speed at which the pedals turn, measured in Revolutions Per Minute. 18 Jun 2020 Tachometers (also known as revolution-counter sensors) are highly recommended for rotor-wing frames because they allow the autopilot to  Generator Sender with Odometer/Revolution Counter M22X1. Sep 16, 2005 · The sensor signals are also used for positioning detection for the ETCS and the Italian SCMT (Sistema controllo movimentazione treno) automatic train control systems. Motors are used on a variety of projects. , 5 VA / 12 to 24 V DC, 100 mA RESET & change direction switch (CB/DB) Direction-Auto-Add-Subtract Input-Built in sensor Memory-Last count 72 hours. Detectable, optic counter sensor, vibration plate usage. 56 digit display, 8mm LED. Some read as a revolution count, some read by way of an output voltage (PCM input from the sensor) while some can only show you the input voltage or percentage of output signal. A small round magnet is mounted on the blade as shown in Fig. Counters can be scaled to track and display a number of event cycles, track a position, measure the amount of linear feed, or track a position within rotation. RPM (Revolutions per minute) – the number of revolutions per minute. 5, 4 Pulse. The sensor generates one pulse per revolution of the measuring wheel. Features include programmable zero point offset, measurement averaging and sign of rotational direction. This invention relates to a steering angle sensor, particularly for yawing moment control in automotive vehicles. It can easily display any production variable such as temperature, position, or rate. Fits A4, A4 Avant, A4 Cabriolet, A4 Quattro, A4 Quattro Avant, S4, S4 Avant, S4 Cabriolet. Hence, to make line follower robot I needed line follower module and to make obstacle avoiding robot I needed ultrasonic sensor. Description: This counter offers a wide input frequency range from 1Hz to 35KHz, and four display ranges of 99. Electronoobs 55,278 views · 13:10  27 Aug 2017 A3144 Hall effect sensor - Neodymium magnet for spinner. You can attach it easily to the master display console to count the RPM. By Type. RPM rev counter sensors play an integral role in helping drivers to monitor the overall speed and function of their vehicle. Submitted by superadmin on Fri, 06/15/2012 - 14:54. The P1725 TOYOTA Description This sensor detects the rotation speed of the input turbine. A revolution counter using a magnetic bubble device and permanent magnets has been developed that can count up/down and maintain shaft revolutions without using electrical energy. Mar 23, 2017 · 6. The digital revolution counter CMD6-1/220V is a microprocessor device with a 6-digit display and serves for measuring revolutions in the range from 3 to 600000 rpm. Other screws require additional calculations. This can be in relationship to individual, intermittent signals from a sensor, switch or similar. By comparing the input turbine speed signal (NT) and the counter gear speed sensor signal (NC), the ECM detects the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure in response to various conditions, thus performing smooth gear shifting. The current code is below. Jump to Latest Follow 1 - 9 of 9 Posts. com. (Though you probably want higher resolution than once per revolution). GPS units that allow cyclists to monitor their heart rate, count calories and track stats. 01" or 0. 3 and it was gaining 1 revolution every 20 so its just not good The Counter will then count the number of signals from the Photoelectric Sensor and sends a signal to the Pusher (i. Replacement Rev Counter Board for FM350/352, 500/502, FM600. It consists of a newly developed dedicated magnetic bubble chip, a pair of bias magnets, a ring magnet, a pair of coils wound around the chip, and a signal processing circuit. 0 for Lambretta DL/GP/LI/SX /TV - 140 with the inclusion of the, separately available, electronic wheel revolution sensor kit. g. To determine performance and efficiency, or for purposes of timing, it helps to have a tool that can measure or calculate the speed, angle, or count of a rotating object. For a 2-wire sensor, the wiring is the same as shown above in Fig. In any The OMDC-PU-E pick-up sensor is an economical and reliable way to monitor motor speed. ASR, Rpm, Spin. PPR describes the number of high pulses an encoder will have on either of its square wave outputs A or B over a single revolution. Great deals on Rc Tachometer. Open the Banggood app and find the product(s) in the cart or wishlist. However, it does not enable the encoder to count revolutions if the external  DIGITEN LCD Digital 0-99999 Counter 5 Digit Plus UP Gauge + Proximity Switch Sensor with Magnetic: Amazon. The all new rev counter bar design is adjustable, so you could adjust the rev. Wire these counters/ratemeters to an electrical pulse-emitting switch, sensor, or encoder to count  Photoelectric sensors usually provide low resolution, due to the low number of pulses measured per revolution. Ships from Jim Ellis Volkswagen, Atlanta GA Hall-Effect Sensor Revolution Counter with OLED and IR Sensor I am working on a project to count revolutions of a mouse wheel using a hall-effect sensor and magnet. Time is measured in milliseconds and the desired output value is in rpm so the TimeBase constant is set to 60 (s/min)*1000 (ms/s)=60000. 8 Jul 2018 It is also known as revolution-counter, and its operating principle can be An optical encoder or magnetic sensor can also be attached to this  360 counts per revolution. A tachometer (also called a revolution-counter, rev-counter, or RPM gauge) is an instrument that measures the rotation speed of a shaft or disk, as in a motor or other The speed sensor uses a disc with holes (encoder disc) to block the infrared beam, thus by counting the number of times the sensors goes from Low to High we can calculate the number of revolution for a given time period. Ships from Jim Ellis Audi Parts, Atlanta GA Stock revolution counters possibly existing on various motorcyclescan normally NOTbe driven with signals from our systems. Timer is an electronic element that is able to  Speedometer/Rev Counter SIP 2. This project differ from other projects present around web as it uses a Hall Effect sensor rather an IR LED sensor which means it can be used in any prevailing ambient conditions. Sep 30, 2003 · A shaft revolution counter including one or more reed magnetic sensors interacting with one or more magnets attached to the shaft. RPM counters are used to measure Speed of Motors (AC/DC) or any Rotating Object. But I did not have any of these so I thought of building my own line follower and obstacle sensor using ir leds. The steering angle sensor as set forth in claim 1, wherein the measuring sensor and the counting element are disposed one above the other when viewed in the axial Dusk to Dawn Outdoor Lights : Free Shipping on Everything* at Overstock - Your Online Security & Motion Sensor Lights Store! Get 5% in rewards with Club O! Encoder & resolvers are required for motor control whether the end system is an automobile, a satellite or factory floor machinery, the position feedback sensor is an intrinsic element in the total motor-control system. We can not tell and we do not know and therefore we can not offer any support on those materials. Original Shaft Encoder. To specify an appropriate sensor to measure rotation, it is important to understand the types of sensors that are available and to consider the entire system, including the properties of the intended sensing target and its environment. Genuine Volkswagen Part # 1J0927804 (1H0927808) - Speed sensor. With battery or vibration mode, CAP8533 can operate with all type of vehicles : automotive, two and three wheelers, heavy trucks. Ships from Jim Ellis Audi Parts, Atlanta GA Pulses Per Revolution (PPR) CUI Devices uses the term PPR, or Pulses per Revolution, to represent encoder resolution. The best method of using a proximity sensor is to sense the teeth on a gear. Free shipping on many items | Browse your favorite brands | affordable prices. They cover a wide range of applications including the manufacturing and production of textiles, plastics and paper, packaging, printing, medical and lab equipment. MS102B is usually mounted by two screws, but depending on the installation they may also be seated on an elastic pad. 57 An electronic counter is a device that stores (and often displays) the number of times a particular event or process has occurred. Hall proximity sensor x  Cheap counter display, Buy Directly from China Suppliers:Revolution counter with alarm buzzer adjustable photoelectric switch sensor distance 5 meters. 00 Backorder Available. Find Revolution Counter related suppliers, manufacturers, products and specifications on Maximum Torque: 17. Speed, RPM and Rotational Sensors Using the expertise we’ve gained in developing specialized solutions for many of the world’s leading marine manufacturers, we offer a large portfolio of Speed, RPM and Rotational Sensors for the marine market. revolution counter sensor

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