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    Signal Isolator, Loop Powered, 4-20mA/0-20mA/0-5V/0-10V

    5 out of 5 based on 4 reviews | Write a review
    Analog signal isolator is composed of pluggable PCB power board and separable isolating circuit module. It can be input the loop powered sensor signal or the external powered sensor signal by the selector switch. Signal isolator is suitable for industrial field with severe signal interference. Signal isolator adopts digital calibration, automatic zero calibration, DIN rail installation way and no potentiometer, with strong input/output/power supply isolation, fast response, low-power dissipation, and good anti-interference performance.
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    Delivery date: 6-12 days

    Signal isolator with strong isolation can convert 4-20mA/0-20mA/0-5V/0-10V signal to standard signal or other customized signal.


    Model ATO-SINIR-502E
    Shipping weight 0.5kg
    Dimension 96*18*122mm
    Structure Pluggable PCB power board and separable isolating circuit module
    Type of signal * 4-20mA, 0-20mA, 0-5V, 0-10V
    Power supply DC 24V±10%
    Accuracy 0.1%FS
    Number of input & output channels * 1 input channel & 1 output channel, 1 input channel & 2 output channels, 2 input channels & 2 output channels
    Stability ≤0.2%/year
    Output load Current output: 0-350Ω, voltage output: ≥10kΩ
    Power supply mode of input signal Loop powered (switch up), external powered (switch down)
    Installation 35mm DIN rail

    Dimensional drawing:
    Loop powered signal isolator dimensional drawing

    Wiring terminal:
    Signal isolator wiring terminal

    Tips: What is external powered signal isolator and loop powered signal isolator?

    1. External powered signal isolator
      It need an independent DC 20-35V switching power supply. The signal isolator samples 4-wire current signal and outputs 4-wire current signal after isolation. The advantage of this approach is high accuracy of isolation transmission. Power, input and output are completely isolated. Multi channel system power supply does not need isolation, thus ensuring a high anti-interference performance. The input signal can be converted to other types of signal.
    2. Loop powered signal isolator
      In the actual industrial monitoring system, DCS, PLC or other display instruments adopt cards internal power supply, the cards have higher requirement on the signal isolation transmission accuracy, so does the distribution voltage of a 2-wire transmitter. However, the external powered isolator can't meet these conditions. Therefore, the loop powered isolator is selected. Such a signal isolator provides working power supply to the 2-wire transmitter and samples the 2-wire current signal output by the transmitter. It converts the 2-wire current signal to 4-wire current signal after isolation and then output. In this way, it not only retains the superior performance of the external powered signal isolator, but also meets the requirements of the output loop powered interface.
    Existing reviews of Signal Isolator, Loop Powered, 4-20mA/0-20mA/0-5V/0-10V
    Analog signal isolator can be input both loop powered signal and external powered signal
    The input signals of this analog signal isolator can be both loop powered signal and external powered signal. It's very powerful. In this case, I won't worry about buying a wrong one. And when installing in the site, it also saves the works of changing the lead wires and changing the PLC program. It's so great!
    From: Owen | Date: 25/07/2019
    Was this review helpful? Yes No (0/0)
    4-20mA signal isolator with high accuracy
    We use the FLUKE725 process calibrator to calibrate ATO 4-20mA signal isolator. When the calibrator displays a standard output of 12 mA, fine adjusting potentiometer for calibration. After finishing the calibration, the accuracy of full range is better than 0.1%, and the linearity is better than 0.1%. It is great!
    From: Eric | Date: 22/02/2019
    Was this review helpful? Yes No (0/0)
    Analog signal isolator is good for solving interference problem.
    The analog signal isolator is easy to use. I don't need to confirm whether to buy a loop powered isolator or external powered isolator, because it has both modes. I can use the switch to select the one I need. After measurement, the isolator accuracy is indeed very high and the stability is good. I'm so glad that the system's interference problem is solved. I hope to cooperate with you for a long time.
    From: Ryan | Date: 25/01/2019
    Was this review helpful? Yes No (0/0)
    Signal isolator for VFDs
    Signal isolator is specially used to manage all kinds of off-brand VFDs. As long as using the loop powered signal isolator, the VFD is not subject to any interference, and the working state is very stable.
    From: Diego | Date: 25/11/2018
    Was this review helpful? Yes No (0/0)
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    Signal isolator ATO-SIGNI-402E series is a universal signal isolator that can be customized with various active and passive input signals, such as thermocouple K/B/S/E type, RTD Pt100, current signal 4-20mA/0-20mA . The output signals can be 4-20mA and 0-20mA. Signal isolator has pluggable terminals, 12.5mm thickness, high accuracy 0.1%FS and protection class IP20.