Signal Conditioning FAQ - Current Loop Inputs

1. Are the API LPI-1 and the API LPI-2 UL recognized or listed?
No. These should not be required for UL listing since the operating current and voltage are below the covered standards.

2. We have an API DPI-2. Can we have an input of 0-20 mA and an output of 0-20 mA?
No. The loop powered device requires a minimum of 4 mA to supply power to the module.

3. For the API DPI-2, what is the maximum voltage we can use with the 4-20 mA input loop?
60 VDC is the maximum voltage that can be used to power the input loop.