Frequency divider DFD420

pulseindustrial

The DFD420 flow transmitter is a pulse / current converter that fits both Tecfluid’s Covol series oscillating piston flowmeters and TM series turbine flowmeters, as well as other pulse transmitters on the market. A pulse converter is an electronic device that is used to convert the pulses received from a sensor into another type of compatible signal for other devices such as flow controllers, in our case the DFD420 converts input pulses of a flowmeter into: Pulses per volume unit or configurable flow alarm 4-20 mA analog output The DFD420 has two outputs: 4-20 mA analog output in a 2-wire loop, that also powers the instrument, and optoisolated output that provides pulses proportional to the input pulses or configurable alarm. Why having a current output? In order to give flow rate information to an instrument with 4-20mA input, for example, to send information by cable in industrial environments. To do this, the frequency of the input pulses (flow rate) is measured and converted into an analog signal proportional to the flow rate and the parameters configured using the Winsmeter DFD software, which we will talk about later. The current output can be connected to any device that has a compatible current input being the values 4 and 20 mA programmable. Why having a pulse output? In order to give information on the amount of liquid passing through the flowmeter, ie volume. For this, the DFD420 converter counts the number of pulses at its input and divides them by the division factor programmed by the user. Thus they become a comfortable amount to quantify the volume (for example 1 pulse / liter).