What are 2Wire and 4Wire Transmitter Output Loops

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=Bk5bLrzwLII

▶ C'mon over to https://realpars.com where you can learn PLC programming faster and easier than you ever thought possible! • ============================= • ▶ Check out the full blog post over at • https://realpars.com/transmitter-wiring • ============================= • In this video, we’re going to take a close look at 2-wire and 4-wire transmitters and discuss where they are used and why. We’re also going explore wiring configurations and how transmitters are connected to a PLC. • Before we get started, you might want to review our video called PLC Analog Inputs and Signals ( • PLC Analog Inputs and Signals . • A transmitter is an instrument that converts the small signal from a sensor to a signal which represents the variable being measured. • Transmitters come in all different shapes and sizes and connect with several types of sensors. • The transmitter output signal representing the variable being measured can be voltage or current. • A transmitter analog output loop contains the transmitter, power supply, and the receiving device which could be a PLC or DCS. • Just like any other instrument, a transmitter needs a power supply to operate. But, is it a 2-wire or a 4-wire transmitter? • The actual wiring connection between the transmitter and the power supply depends upon which type it is. • A 4-wire transmitter has 2 wires connected to a power supply, and 2 signal wires connected to the PLC. • The power supply can be AC or DC depending upon the vendor and model. • As its name states, a 2-wire transmitter has only 2 wires. • In a 2-wire current loop, the transmitter, DC power supply, and PLC are connected in series. • Not only are the 2 wires providing power for the transmitter, but they are also the signal lines! • Earlier we said that the transmitter output can be either current or voltage. Current is by far the most common transmitter output signal for many reasons. • One reason is if the wires between the transmitter and the PLC are very long, there could be significant voltage losses across these wires. • Regardless of the length of wire in a current loop, basic electrical theory tells us that the current is the same in the circuit regardless of where that current is measured. • ============================= • Missed our most recent videos? Watch them here: • https://realpars.com/wireless-radio-m... • https://realpars.com/calibration/ • https://realpars.com/flow-rate/ • ============================= • To stay up to date with our last videos and more lessons, make sure to subscribe to this YouTube channel: • http://goo.gl/Y6DRiN • ============================= • TWEET THIS VIDEO https://ctt.ac/oEPnm • ============================= • Follow us on Facebook: / therealpars • Follow us on Twitter: / realpars • Follow us on LinkedIn / realpars • Follow us on Instagram / realparsdotcom • #Transmitter #RealPars #PLC

#############################

New on site