Applications include AC line frequency, RPM or speed from proximity switch inputs, and flow from turbine flow meter inputs. Input frequencies can range from 0.005 Hz to 1 MHz. ![]() ![]() The Micron Meters 4-20 mA and RS232/RS485 transmitter for frequency, rate or period accepts two independently scalable input channels from a wide range of pulse sources, such as NPN or PNP proximity switches, contact closures, digital logic, magnetic pickups down to 12 mV, or AC voltages to 250 Vac.
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