H&L Instruments LLC products

The 531-8 Digital I/O replaces copper wire and galvanically isolates, protects, and monitors contacts remotely (such as close-coil, local, or remote trip) and supports telemeter revenue meter pulses over large distances. The Model 531-8 is simple to install due to its removable plugin screw terminals. The unit does not require a PC but only a screwdriver to connect the inputs and outputs.

The Model 900C Edge Profile Comparator is a compact, self-contained optical instrument for inspection of the leading and trailing edges of turbine fan and compression blades. The latest version of the Model 900 Edge Profile Comparator incorporates a high resolution, flat-screen, LED back lit LCD monitor. The upgraded display provides sharper image rendering and a longer screen life.