Loop-powered 4–20 mA displays allow you to see the value of the 4–20 mA analog signal without the need to provide additional power.
They can be ATEX or IECEx, intrinsically safe Ex i, certified. They can be supplied inside an Ex d flameproof housing or for free installation to be mounted inside a transmitter housing.
More info: https://www.officineorobiche.it/en/product/st0028/
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