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F2A3X Frequency to Analog Converter/Tachometer


Regular price $299.00 Sale


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The F2A3X Frequency to Analog Converter is a DIN rail module that converts a frequency input signal into a proportional analog voltage (0-5Vdc) or current (4-20mA) output. The output signal is electrically isolated from the input signal and input power source effectively eliminating troublesome ground loops. The input signal can be supplied from Monarch sensor (measuring RPM for example) or any source of digital signal not exceeding 12 volts. The F2A3X is completely user programmable using the free downloadable PM Remote Software (see downloads tab below). A NIST certificate of calibration is included.


  • Process monitoring over networks
  • Tachometer signal generator
  • QC and R&D
  • Engine performance
  • Signal conditioning
  • Data acquisition
  • Motor or pump monitoring


  • Standard DIN rail mounting
  • Ethernet communications available
  • 5 to 999,990 RPM range (0.083 to 150kHz)
  • Compatible with most speed sensors (TTL)
  • 12 to 24 Vdc input power
  • Alarm set point with optional relay output
  • Pulse repeater output
  • User configurable
  • View real-time data on PC
  • 4-20mA or 0-5 Vdc scalable output
  • 10 Vdc or 5 Vdc sensor excitation
  • Includes NIST calibration certificate



Input Range: 5-999,990 RPM speeds below 5 RPM possible with multiple pulses per revolution (0.083 Hz to 150 KHz)
Input Configuration and Voltage Range: 1 to 9,999 pulses per revolution or use a scale factor of 0.0001 to 99,999 - PC software programmable, TTL input and 1.1V to 25Vdc signals-Internal Jumper for : +/-1 to +/-25Vac
Analog Output: Voltage: 0-5Vdc, 5mA max load, Isolated or 4-20mA Isolated, 500 ohm max load, Internal 12V compliance voltage. 16 bit resolution. Full scale and offset RPM ranges PC programmable
Accuracy/Resolution: 0.005% of full scale output / 76 micro-volts or 30.5 Nano amps
Output Update: Software selectable up to 244 times/sec-dependent on input frequency
Memory: Maximum and minimum recall via PC software
Dimensions: 1/8 DIN by 3.94" (100mm) deep
Input Power: Standard 12-24Vdc 4.5W max or optional 12Vdc to 24Vdc isolated 4.5W max
Sensor Excitation: 10Vdc @ 60mA standard or optional 5Vdc @ 60mA
Pulse Repeater Output: 0-5V TTL compatible, one pulse out for each pulse in. Polarity is software selectable
Communications: Standard: serial-requires USB interface cable, Optional: Ethernet RJ45 or USB type B
Alarm Capability: Optional alarm with relay output - Set points: High or low alarm limit, latching or non-latching. PC Programmable
Alarm Outputs: 1 Form C relay contact, rated 1A at 115Vac or 230Vac
Alarm Reset: Automatic or manual reset. Front panel push button or remote reset via PM Remote Software
Environmental: Indoor use only, installation category II per IEC 664 Temperature: -10 deg. to 50 deg. C operating per IEC 61010-1 Humidity: 80% max for temps up to 31 deg. C, decreasing linearly to 50% RH at 40 deg. C
Electrical Safety: Meets EN61010-1:2001, EC low voltage directive 2006/95/EC





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