Red Lion Controls APLCL400 Current Loop Indicator

The Red Lion Controls APLCL400 Apollo Current Loop Indicator is a rugged, panel‑mount readout that converts standard current‑loop signals into a visible numeric value on a 3.5‑digit LED display. It accepts 4–20 mA signals (and 10–50 mA) and can be adapted to additional ranges such as 0–50 mA, 0–20 mA, or 0–10 mA, enabling readouts for process variables like pressure, flow, temperature, and level in industrial applications. Powered from 115 V AC with no internal excitation (W/O EXC), the unit features a sealed metal front bezel that meets NEMA 4/IP65 when properly installed for use in dirty or wash‑down environments. The APLCL400 is designed for panel mounting in a 92 × 45 mm cutout, with overall exterior dimensions about 4.5 in wide, 2.0 in high, and 6.5 in deep and a weight near 1.25 lb. Its Apollo architecture combines a digital voltmeter with an analog scaling circuit to translate loop current into a clear red‑digit readout, making it a straightforward solution for monitoring current‑loop signals across plant instrumentation, from panels to remote monitoring sites.