Red Lion Controls APLCL400 Current Loop Indicator

Red Lion Controls APLCL400 Apollo Current Loop Indicator is a rugged, 115V, without-excitation panel display that reads current-loop signals from process instrumentation and presents them on a digital voltmeter-style readout. As part of the Apollo Series, it is designed for high-sensitivity, programmable readouts of variables like pressure, flow, temperature, and level conveyed by a current loop. The unit is passive (no loop excitation); its input terminals 3 and 4 are connected in series with 10–50 mA current loops and it displays the loop signal on its front panel. Its front bezel is sealed metal and designed to meet NEMA 4/IP65 when installed properly, enabling use in dirty, wash-down, or harsh environments. With dimensions of roughly 4.5 in x 2.0 in x 6.5 in, it fits standard panel cutouts. Some catalogs list the APLCL400 as obsolete and no longer manufactured.