Medium sensitivity transmitter of photocurrent to 4-20 mA current loop.

Transmitter (current amplifier) with output current of 4-20 mA to include photodiodes into an industrial 4-20 mA data bus

Maximum photocurrent: 2,5 µA


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The AMPCON converts a photocurrent into an output current between 4 and 20 mA. The module is designed for integration into 4-20 mA databusses.

The present module works with a medium gain factor and converts a photocurrent of 2,5μA (adjustable +/-35%) to an output of 20 mA. This means, a current higher than 2,5 μA will cause saturation.

Other modules with low gain (AMPCON_LO, up to 250 μA) and high gain (AMPCON_HI, up to 18 nA) are available. Alternatively, please refer to the below instruction for changing the gain.


The datasheet for the AMPCON_MED is available in pdf format:

AMPCON_MED datasheet