4-20mA Signal Isolators

Acromag offers the industry’s best selection of 4-20mA signal isolators. Select from single, dual, and quad-channel models with AC, DC, or loop-powered operation. Signal splitters deliver dual outputs from a single source. And whether you need a unit that sinks or sources current, Acromag has the right solution for you. Optical or galvanic isolation eliminate ground loop errors, reduce noise, and block high voltage transient surges. All Acromag isolators will withstand 1500V AC for 60 seconds and provide continuous 250V AC or 354V DC common-mode protection of your precious equipment. Acromag features solve many tough problems. Our multi-channel modules reduce costs and save space. Models with push-button calibration simplify installation and maintenance tasks. Units with trim pots ship preset for 4-20mA input/output so field calibration is not required. To learn about the benefits of different models, watch our signal conditioning guide videos.

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    TT236: Current/milliVolt Input 2-wire/3-wire Transmitter

    • Multi-range ±20mA or ±500mV input
    • 4-20mA ouput (sink/source)
    • 12-32 V DC loop/local power
    The TT236 model is a space-saving two-wire transmitter that isolates and converts a DC current or low voltage input to a proportional 4-20mA control signal. A single unit supports both voltage and current input for extra flexibility.
    $195
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    TT336: Transmitter; Current/milliVolt Input, DC Power

    • Multi-range ±20mA or ±500mV input
    • Universal current/voltage output
    • 12-32V DC power
    The TT336 model is a space-saving four-wire transmitter that isolates and converts a DC current or low voltage input to a proportional control signal.
    $265
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    Agility Config Tool (Tethered)

    • Tethered Agility Config Tool mobile application
    • For Acromag SP Series Signal Splitters and most TT Series Transmitters
    • Download available on Google Play for free.
    • Download Windows configuration software from the software tab below.
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    Agility™ Config Tool (Wireless)

    • Wireless Agility™ Config Tool mobile application
    • For Acromag microBlox I/O Modules and Limit Alarms
    • Download available on Google Play and iTunes for free
    • Download Windows configuration software from the software tab below
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Signal Conditioning Selection Guide Videos

Welcome to our Signal Conditioning Selection Guide Videos. As a business with many helpful products to offer, we know it can be difficult to find which one you need. This quick selection guide should help point you in the right direction. Choose which video corresponds to your power needs, and the guide will show you which Acromag modules will work with your input.

Output Loop Powered Transmitters Video

DC Powered Transmitters Options Video

AC Powered Transmitters

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