current transducer 4 to 20ma output factory

#Current transducer 4 to 20ma output factory series

We have succeeded in making a proportional copy of the current we want to measure but we still need to have the measured data translated into a readable signal. The sensing of the magnetic field was accomplished through induction. And finally, when the wire is run through the aperture of a current transducer, the magnetic field is picked up by a sensor within the instrument. The current flowing through that wire is giving off a proportional magnetic field all around itself. We started with a process wire that is carrying an electrical current something that we want to measure. Let’s retrace our discussion up to this point so we can clearly understand the steps of how a current transducer works. That’s a lot to take in so we’ll discuss this in more detail over here at “What Types of Sensors are in a Current Transducer? ” Each type of sensor uses induction to detect a magnetic field in its own special way, but all of them essentially produce their own separate, proportional copy of the magnetic field within the current transducer. Hall-effect sensors Rogowski coils and toroid transducers are all types of current sensors that use induction to detect the magnetic field of a process wire. This hands-free sensing method is called induction and it turns out to be an excellent way to measure current.

Since the magnetic field is manifesting into the surrounding empty space, it can be sensed without touching the wire itself. The closer to the wire, the stronger the effect. The size, or strength, of the electromagnetic field around the wire, is a reflection of the current that is flowing through it. When electricity flows through the process wire it actually generates an electromagnetic field all around the wire itself.įigure 3: Process wire and magnetic field When the electrical input of an operation must be monitored the process wire that is carrying the electrical current is passed through the aperture in the center of a current transducer. These components are housed within a non-conductive casing.įigure 2: Diagram of a solid core current transducer Whether it’s a split core or solid core, current transducers all have the same two basic components a sensor and a signal converter. Ready to find out how this contact-free capability works? Let’s unravel the mystery inside the current transducer.įigure 1: Enercorp current transducers split core (left) and solid core (right) versions. Current transducers allow this sort of measurement just like thermometers tell us the temperature but how does a current transducer work.įor a more general overview, be sure to read through “ What is a Current Transducer” for a basic understanding of this instrument. Just like other measurable environment variables, such as pressure, the monitoring or measuring of electrical current can be vital to an operation. One would be hard-pressed to name a product that doesn’t require an electrical input somewhere within its manufacturing process. F = Ferrite and S = Silicon steel.Home | Blog | Current | Current Transducer: How does it work? Current Transducer: How does it work?Įlectricity is the lifeblood of modern industry computers, pumps, lights, motors, conveyors, and machinery all require power to run. Unless you would like to special order the product, we have chosen the combinations for you that we recommend for typical usage. Silicon steel is longer lasting, and its accuracy is less sensitive to temperature. Ferrite is less expensive, and picks up low current better.

In the 24 mm size, this product can be ordered with either a ferrite or silicon steel core.

Accuracy: <2% of nominal primary current.

Choice of standard output types: 4-20mA.Choice of primary current ranges: 250A RMS.Current transformer and RMS circuit in a single case.Sensing aperture : 21mm(for non-contact measurement).Isolation test voltage : 3kV RMS / 50Hz / 1min.High isolation between primary and secondary circuits.It has a 4-20mA DC output proportional to the RMS value of the primary current.

#Current transducer 4 to 20ma output factory series

The JS24S-RMS is a current transducer 4-20mA output series designed for the electronic measurement of AC waveform currents, with galvanic isolation between the primary circuit (power) and the secondary circuit (measurement).