Frequency to V/I Converter ( Microcontroller Based Unit)

Now measure the Speed of an object such a Turbine rotor, Motor shaft, Flywheel accurately with Canopus Instruments microcontroller based system. The frequency to voltage converter can also be interfaced with Proximity Switch sensors. Canopus Instruments is one of the biggest manufacturer of microcontroller based system, frequency to voltage converter or f to v converter in India. Get in touch with us to know the details of the products.

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The F to V/mA Converter (Model No. XF101) is a Microcontroller based unit, designed to accurately measure the Speed of an object such a Turbine rotor, Motor shaft, Flywheel, etc. The converter interfaces with Magnetic Pick-up (MPU) sensors used widely in such applications and has full scale frequency measurement range of 20 KHz, which allows usage even in very high speed rotary measurement applications. The unit can also be interfaced with Proximity Switch sensors.

Typical analog type Frequency – mA converters suffer the drawback of slow response time and excessive ripple in the output analog value in the lower 10% of the measurement range. This limitation is overcome in XF101 converters, which operate on the principle of time interval measurement of frequency input waveforms. Frequency measurement result is available within two complete cycles of the input waveform. This results in extremely fast response to any variation in measured frequency value.

Measurement accuracy better than +/- 0.1% is achieved due to high frequency timing clock used internally for time interval measurement. The measurement accuracy is maintained over the entire frequency input range of 0-20KHz.

Analog Output 0-10V/4-20mADC is available, proportional to input frequency range of 0 to 20 KHz.

Ordering Information

Order Code Input Output
XF101-mA420 0-20KHz 4-20mA
XF101-V10 0-20KHz 0-10V

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  • Magnetic Pick Up (MPU) input
  • Input frequency Range: 0-20 KHz Microcontroller based S/W approach eliminates output ripple at low freq.
  • Response Time: 2 Clock cycles of Input Freq.
  • Accuracy better than ±0.1% achieved due to internal high frequency timing clock.
  • Input : 0.5V-28Vac rms (Wide Variation accepted)


  • The fast response and high accuracy of these converters makes them an ideal choice in Turbine speed monitoring applications, where quick corrective action is desirable from the control electronics.


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Input Frequency Range 0-20KHz
Input Signal Waveform
Factory Set
Sine Wave
Minimum Measurable Frequency 3Hz
Input Voltage
Max. Limit of input Signal
0.5V-28VAC rms 30VAC Continuous. 50VAC for 1 Min.
Output Range 0-10VDC/4-20mADC, Factory Set
Resolution : 4-20mA, 0-10V 1µA / Hz
0.5mV / Hz
Load Resistance across output
For Voltage Output
For Current Output
<500 Ohms
Performance Accuracy ±0.1% at 25°C
±0.25% Over Operating Temp. Range.
Response Time(2 Cycles of Input waveform ) At 5Hz – 400mSec
At 20KHz -100uSec


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Isolation 2KV-Between Input & Output.
2KV-Between Input, Output & AC Supply.
Power Supply Voltage 90-270Vac, 50Hz ± 3Hz.
Current 100mA Max.
Enclosure ABS Plastic, 35 mm DIN Rail Mounted. IP40 Protection class. Single Output W – 100mm
H – 75mm
D – 110mm
Operating temp. range 0 – 55°C
Storage temp. range 0 – 80°C
Relative Humidity 0 – 90%
RH Non-Condensing
Max. Altitude 3000 mts above MSL


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Single input & Single output Converter

Pin Details Pin Details
11 NC
2 NC 12 +Output
3 NC 13 -Output
14 NC
5 NC 15 Phase (AC Supply)
6 NC 16 NC
7 NC 17 Neutral (AC Supply)
8 NC 18 NC
9 NC 19 Earth
10 NC 20-38 Not Connected (NC)


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Additional information

Input Types

Magnetic Pick Up (MPU) Sensor

Output Signal

Current 0-20/4-20mA (4 Wire), DC Voltage (+/-10V)



Isolation Level

2 KV


ABS Plastic

Product Type



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