Application

Rpm& Speed


These are some system configurations of our products. If you need more information or support for our products, please feel free to contact your nearest distributors or us by e-mail at overseas@ONO SOKKI.co.jp.

Measurement of rotational speed by rotating shaft

Handheld Digital Tachometer

A-1-1 : Rotational and line speed measurement with Contact type
Handheld Digital Tachometer



It can measure rotational speed simply by pressing KS-300 (contact tip: standard accessory) the provided contact tip) into center hole at the end of rotating shaft. It can measure line speed simply by pressing KS-200(circumferential ring: standard accessory) to belt conveyor etc. Measurement range: 0.5 to 10,000 r/min (measurement of rotational speed), 0.05 to 1000.0 m/min( measurement of line speed) Memory function: with up to 10 memory numbers Large-sized liquid crystal display (5-light LCD)

A-1-2 :  Rotational speed measurement with Non-contact type 
     Handheld Digital Tachometer



It can measure rotational speed simply by affixing 12mm-square reflective mark (dedicated) on the surface or edge of rotating shaft. It detects the reflected light of a visible red light from the reflective mark on the rotating body and displays the rotational speed. Measurement can be performed safely at a distance ranging form 20 to 300 mm. Measurement can be performed at the range from 4 r/min to 50,000r/min. (Enable to measure at a lower speed by affixing multiple reflective marks. 1 to 8 pieces.) Memory function: with up to 10 memory numbers Large-sized liquid crystal display (5-light LCD)

A-1-3 : Rotational speed measurement with Contact/Non-contact type
     Handheld Digital Tachometer



Capable of both contact and non-contact measurement in one unit. As non-contact type digital tachometer, affixing the 12mm-square reflective mark to the surface or edge of rotating shaft, which measures revolution with the visible light reflection system. When it is used together with the supplied contact adapter (HT-0502: standard accessory) and contact tip (KS-300: standard accessory), it can be used as a contact type tachometer. It measures the rotational speed by pressing the contact tip (KS-300) against the center of concaved surface of the rotating shaft. Besides the line speed can be measured by pressing the supplied circumferential ring (KS-200: standard accessory) to the object surface such as belt conveyer. Both analog and pulse signal output are provided as standard function. Analog output is used for recording the fluctuation of rotational speed by pen-recorder etc. and pulse output is used as external sampling signal of tracking analysis at FFT Analyzer. Maximum 20 data can be saved with built-in memory function. Large-sized liquid crystal display (5-light LCD)

A-1-4 :  Measuring the rotational speed of the motor by its magnetic flux leakage 
     (FFT calculations)



This Example shows how to measure the rotational speed of DC motors that built in the home appliances. Even if the DC motor has been installed deeply inside at an appliance such as an electric toothbrush, the rotational speed can be measured by the magnetic flux leakage from the outside of the case with the Magnetic flux leakage sensor (FT-0501). And then, it performs the frequency analysis by FFT calculations in order to display the rotational speed by inputting the number of pole in the DC motor rotor. Analog signal output and sensor signal monitor output are provided as standard function. Analog signal output can be used for recording the fluctuation of rotational speed by pen-recorder and so on, sensor signal monitor output can be used in order to check the signal waveform. Compact sized handheld type tachometer which performs frequency analysis by FFT calculation. Suitable algorithm can be selected among four measurement mode algorithms to suit your measurement application. Provided with an analog signal output and an averaging processing function

A-1-5 : Using a microphone to measure the rotational speed of an engine from 
     the muffler noise (FFT calculation)



This example shows how to measure the rotational speed of an engine from an automobile's muffler noise using a measurement microphone. Since the component of pulsation relating to the engine rotation is included in the muffler noise, the engine's rotational speed can be obtained by this pulsation frequency component. By setting the number of ignition firings per one crankshaft rotation, the rotational speed can be measured to perform frequency analysis through FFT calculation. Please note, however, that depending on muffler performance, there may be cases when measurement cannot be performed. Analog signal output and sensor signal monitor output are provided as standard function. Analog signal output can be used for recording the fluctuation of rotational speed by pen-recorder and so on, and sensor signal monitor output can be used in order to check the shape of signal waveform.

A-1-6 : Using a microphone or accelerometer to measure the rotational speed
     of an engine (FFT calculation)



The FT-7100 can measure the rotational engine speed by the sound and vibration related to the movement of the pistons. It is effective to measure when the engine rotational sensor cannot be attached because the engine compartment is covered. By setting the number of ignition firings per one crankshaft rotation, it can be measured rotational speed to perform frequency analysis through FFT calculation. (ex. Set at 2 P/R in a four-cylinder engine with four-cycle) Analog output and sensor signal monitor output are provided as standard. Analog output can be used as recording the fluctuation of rotational speed to data recorder and so on, and sensor signal monitor output can be used in order to check the shape of signal waveform.

A-1-7 : Using a accelerometer to measure the rotational speed of a compressor
     (FFT calculation)



This example shows how to measure the rotational speed of a compressor built into an air conditioner and similar equipments. The FT-7200, used in combination with accelerometer, enables to measure the rotational speed of compressor to perform frequency analysis through FFT calculation even if the rotational shaft is not come out. Analog signal output and sensor signal monitor output are provided as standard function. Analog signal output can be used for recording the fluctuation of rotational speed by pen-recorder and so on, and sensor signal monitor output can be used in order to check the shape of signal waveform.

A-1-8 : Measuring the high-speed rotation (maximum to 999,990 r/min) with
     Non-contact method



In addition to the rotational objects including the dental hand piece and yarn texturizing machine, the rotational speed of motor itself and machine tools such as cutting drill and end mill are having a large increase in speed. Because of those industrial backgrounds, the measurement of high rotational speed over 100,000 r/min is required in wide area of industry in these days. The HR-6800, employed electromagnetic sensor in the detection section, enables to measure the high-speed rotation in the wide range up to a maximum of 999,990r/min with non-contact measurement by closing the magnetic-electro detector with magnetizing the rotating object or figure of the drill. Both analog and pulse signal output are provided as standard function. Analog output is used for recording the fluctuation of rotational speed by pen-recorder etc. and pulse output is used as external sampling signal of tracking analysis at FFT Analyzer. Built-in memory function up to a maximum of 20 data can be saved to memory.

A-1-9 : Measuring rotation speed of a DC motor in an EV (FFT calculation)


This application shows how to measure rotation speed of a DC motor. In recent years, the more precise rotation measurement is necessary in usage of DC motors for electric vehicles. In this application, magnetic flux leakage from a DC motor is detected by mounting the OM-1200 electromagnetic type ignition pulse detector parallel to the rotating shaft of the DC motor. And then the FT-7200 advanced handheld tachometer performs FFT calculation processing of the detected magnetic flux leakage and displays the rotation speed. The FT-7200 provides analog output for signal and monitoring as standard. They can be used for recording the fluctuation of rotation speed by a pen-recorder or the like, and for checking the waveform signal on a monitor.

Measurement with optical detector

A-2-1 : Measuring the rotational speed with Non-contact type optical detector-1


The LG-916, non-contact type optical detector, can measure the rotational speed simply by affixing a 12mm-quare reflective mark to rotating shaft of the object such as motor. Detection distance: max. 20mm (when a reflective mark of 12mm-square is used.)

A-2-2 : Measuring the rotational speed with Non-contact type optical detector-2


The LG-930, non-contact type optical detector, can measure the rotational speed by simply affixing a 12mm-square reflective mark to rotating shaft of the object such as motor. Detection distance: approx.70 to 200mm (when a reflective mark of 12mm-square is used.)

A-2-3 : Measuring the rotational speed of thin shaft at 2mm diameter with
    Non-contact type detector



Quantity of reflective light of optical fiber sensor might change periodically when there is unevenness or black line on a rotational shaft. The FT-1500 measures rotational speed by using this periodic change. It allows to measure rotation which rotational shaft is too thin to affix reflective mark, or such as fan motor even though the light might not be reflected straight. Two staged, upper-/lower-limit comparator output function is provided as standard which is useful to make OK, LOWER, or UPPER decision in production line use. Enable to control data management by RS-232C

A-2-4 : Measuring the rotational speed of thin shaft at 2mm diameter with
    Non-contact type detector



Quantity of reflective light of optical fiber sensor might change periodically when there is unevenness or black line on a rotational shaft. The FT-1500 measures rotational speed by using this periodic change. It allows to measure rotation which rotational shaft is too thin to affix reflective mark, or such as fan motor even though the light might not be reflected straight. Applicable rotational shaft of diameter: approx. 5mm or more Two staged, upper-/lower-limit comparator output function is provided as standard which is useful to make OK, LOWER, or UPPER decision in production line use. Enable to control data management by RS-232C

Measurement in specific environment

A-3-1 : Non-contact measurement of rotational speed using oil and
    heat proof detector



Measurement range: approx. 300 r/min to 3500 r/min Operating temperature range : -10 to +150°C Please prepare gear teeth for rotational detection and its attachment.

Detection of rotational speed from rotational shaft

A-4-1 : Rotational speed measurement of load side from the side of driving gears


This example shows how to measure and indicate for rotational speed from rotating shaft of motors etc. The TM-2110 can indicate rotational speed or speed of roller shaft with its direct reading calculation function even though it is away from detection position. For example, when you set the TM-2110 for the number of detection gear A/ number of detection gear B = 60/36=1.667, it calculates and indicates the rotational speed of gear shaft B. Measurement range: approx. 1 r/min to 2000 r/min

A-4-2 : Measuring and indicating rotational speed of shaft, outputting the
    measurement results to printer or sequencer



The TM-3120 can print measured results and export data being connected to sequencer with BCD output, as well as measuring and indicating rotational speed from a shaft including motor. The TM-3120 can also calculate and indicate the rotational speed of gear shaft B by setting the number of detection gear A/ number of detection gears B = 40/80=0.500. Measurement range: approx. 1r/min to 10000 r/min

A-4-3 : Measuring and indicating the rotational speed of shaft, recording
    its rotational fluctuation



By attaching a rotational detector to gear on a main rotational shaft of stirrer, blender, centrifuge and so on, the TM-3130 can output an analog signal to recorder in order to see the rotational fluctuation as well as measuring and indicating rotational speed of shaft. Measurement range: approx. 1 r/min to 20,000 r/min Rotation from low-speed at 1 r/min or less can be measured with rotary encoder as a rotational detector.

A-4-4 : Measuring the rotational speed at low-speed


The TM-3110 indicates rotational speed or shaft speed with 0000.0 and 000.00 by attaching rotary encoder to a roll shaft of conveyer. Measurement range : approx. 0.1 r/min to 5,000 r/min The price for coupling to fit with connection shaft needs to be quoted separately. We have several types of rotary encoder to meet various requirements.

Measurement of rotational fluctuation

A-5-1 : Recording the fluctuation of rotational speed


This example shows how to detect circumferential or rotational speed of roller in order to convert frequency to voltage/current, and then output those signals.

A-5-2 : Analyzing the fluctuation of rotational speed ( High response type)


The FV-1500 calculates a rotational speed or speed by time of pulse signal in a period from rotary encoder, and then converts the signal into analog signal to obtain 10V/full-scale. (Setting for full-scale is user selectable.) Since the FV-1500 can output voltage or current with high-response of the time in a period of input signal+3.5μs, it enables to analyze fluctuation of transient phenomena with high-accuracy that occurs in startup of motor and so on. The FV-1500 is equipped with deflection output function of center frequency at ±5V. Measurement range : 0.2 Hz to 320 kHz

A-5-3 : Measuring the status of automobile in acceleration and stop


This example shows how to measure the various conditions in acceleration, deceleration and stop of vehicles including truck, car and train of every each wheel. This system allows to measure how the ABS* works by means of recording its condition in rotation and stop of every each tire with graphic on recorder, using signals from the ABS sensor which is equipped with vehicles.

Measurement of rotational speed when the rotating shaft is not come out.

Rotational detection from sound & vibration

B-1-1 : Measuring the rotational speed of a pump from sound (noise)


This example shows how to measure the rotational speed of built-in pump and similar equipments. The rotational speed of pump can be measured by capturing the exhaust sound with microphone, and performing frequency calculation in the periodic change of sound pressure even though the rotating shaft is not come out. Two staged, upper- / lower-limit comparator output function is provided as standard which is useful to make OK, LOWER, or UPPER decision in production line use. Enable to control data management by RS-232C

B-1-2 : Measuring the rotational speed of DC motors built-in products


This example shows how to measure the rotational speed of built-in pump and similar equipments. The rotational speed of pump can be measured by capturing the exhaust sound with microphone, and performing frequency calculation in the periodic change of sound pressure even though the rotating shaft is not come out. Two staged, upper- / lower-limit comparator output function is provided as standard which is useful to make OK, LOWER, or UPPER decision in production line use. Enable to control data management by RS-232C

B-1-3 : Simultaneous measurement of rotating speed and direction of a fuel pump


This example shows how to make rotating speed measurement and rotation direction determination of a finished fuel pump simultaneously, which is widely used such as in a vehicle. Since the rotating shaft is not come out, it is difficult to make direct measurement by attaching a sensor to the rotating shaft. The rotating speed and direction of the motor built in a fuel pump can be measured by the FT-2500 advanced tachometer with the FT-0501 magnetic flux leakage sensor. The FT-0501 attached to the fuel pump detects the magnetic flux leakage, and the FT-2500 performs frequency calculation of the magnetic flux changing periodically.
Upper- / lower-limit comparator output function is provided as standard to make OK, LOWER, or UPPER decision in production line use. Enables data transfer by RS-232C.

Measurement of rotational speed on production line

Roller encoder

C-1-1 : Measuring the line speed at low-speed
      (measurement range 0.01 to 200 m/min)


It measures and indicates the line speed of belt conveyor and similar equipment at the unit of m/min. The compensating function of the Digital Tachometer (TM-3110) enables to set the decimal point as 00.000 or 000.00. Measurement range: 0.01 to 200 m/min (for use at low-speed line)

C-1-2 : Measuring the line speed at medium-speed and alarming when the line
     speed exceeds the set range (measurement range 0.1 to 200 m/min)


This example shows how to measure and indicate the line speed of belt conveyor and similar equipment at the unit of m/min. This configuration can also make an alarm when the speed is over its set value, or even stop the movement of machine itself using comparator output function. The compensating function of Digital Tachometer (TM-3140) enables to set the decimal point as 000.000, 0000.0. Measurement range: 0.1 to 200 m/min (for the use at medium speed)

C-1-3 : Measuring the line speed at medium and high-speed (measurement range 0.1 to 400 m/min)


This example shows how to measure and indicate the line speed of belt conveyor and similar equipment at the unit of m/min. The compensating function of Digital Tachometer (TM-3110) enables to set the decimal point as 0000.0 or 000.00. Measurement range: 0.1 to 400 m/min (for the use at medium or high speed)

C-1-4 : Measuring the line speed and recording the fluctuation of line speed


This example shows how to measure and indicate the line speed of belt conveyor and similar equipment at the unit of m/min. This configuration also can record the fluctuation of line speed to the recorder using analog output function of the Digital Tachometer (TM-3130). The RP-721-120 P/R, the roller encoder for medium-speed, is applicable.

C-1-5 : Analyzing the fluctuated speed (high-speed response type)


The FV-1500 calculates a rotational speed or speed by the time of pulse signal in a period from rotary encoder, and then converts this signal into analog signal to obtain 10V/full-scale. (Setting for full-scale is user selectable.) Since the FV-1500 can output voltage or current with high-speed response of the time in a period of input signal+3.5μs, it enables to analyze the fluctuated speed with high-accuracy that occurs in startup. The FV-1500 is equipped with deflection output function of center frequency at ±5V. Measurement range: 0.2 Hz to 320 kHz

Others

Signal amplification

E-1-1 : Transmitting a signal from rotational detector (electromagnetic
     type/magnetoelectric type) over long distance more than 30m


The isolated amplifier PA-150, which isolates and amplifies input-output circuit, is optimal when the minute signal measured by electromagnetic / magnetoelectric type detector needs to be transmitted for a long-distance more than 30m. Input frequency range:1Hz to 50kHz Input waveform: sine-wave or square-wave Operating voltage: sine wave at the range of 1 to 30 Vrms / square wave at the rage of 0.3 to 30 Vp-p

Rotational speed measurement of a railroad vehicle

E-1-2 : Speed test of a railroad vehicle in actual running


The TM-3100 series digital tachometer can measure speed of a railroad vehicle by using signals from tachometer dynamo equipped on the vehicle. Rotation speed (r/min), kilometers per hour (km/h), kilometers per minute (km/min) can be displayed on the TM-3100. Adding the TM-0330 analog output card (option) enables voltage/current output of the measured values, and recording them to a data logger etc. The measured data also can be stored to a PC using the TM-0350 RS-232C card (option). The speed signal from tachometer dynamo has noise content in many cases. The low pass filter setting of the TM-3100 and condenser (set between speed signal output of the tachometer dynamo and the TM-3100) enable noise reduction and stable measurement.

 

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