loop-powered digital panel meters have a large, easy to read
display, and require no external power source. The 9.4 mm digits
exhibit uniform intensity over the entire 4-20 mA operating range.
Additionally the total maximum loop voltage drop is only 5V.
(span) and offset (zero) adjustments are performed with on-board precision,
20 turn potentiometers. All decimal-point and range-change selections are
made on a six-position DIP switch featuring vibration-resistant, gold-plated
contacts. There are no jumpers or solder gaps to close. Connections to the
current loop are made via a reliable, two-position, screw-type terminal