Hermetically Sealed Frictionless Position Sensors
with Enhanced Stroke-to-Length Ratio

Macro Sensors’ LP 750 Series of 3/4 inch (19 mm) diameter potentiometer replacement position sensors have been designed for a wide range of position measurement applications. The compact design is made possible by its unique coil-winding configuration and digitally enhanced analog output. It is particularly suited for use where installation space is limited. These rugged, hermetically sealed sensors are constructed entirely of stainless steel, and are sealed against hostile environments to IEC standard IP-68.

Electrical termination is through a sealed radial connector and mating connector is supplied with the unit. The radial connection offers three important benefits. First, it permits access to either or both ends for better mechanical support and core guidance. Second, it is easier to cleanout the bore in dusty or dirty locations. Third, is a shorter installed length compared to units of the same range with an axial connection.

LP 750 Series sensors are available in standard ranges of 3.75 inches (95 mm) to 24.0 inches (600 mm). The LPER model is offered with a nominal 24 V DC input and a 0 to 10 V DC output, while the LPIR model provides the convenience and simplicity of precalibrated 4-20 mA current loop operation. LPIR units operate either as 2-wire loop-powered or 3-wire sourcing externally powered. The built-in electronics operate over a wide range of loop supply voltages and resistances, and are designed to operate with many PLCs, digital indicators, A/D converters, computer-based data processors, and QC data collection systems. The standard maximum linearity error for any of the LP Series sensors is ±0.25% of full-scale output (FSO). Optionally linearity error of less than or equal to ±0.10% FSO is available.

LP 750 Series sensors offer frictionless operation, enhanced stroke to length ratio, high resolution, excellent repeatability, and low hysteresis. Their exceptional reliability is the result of manufacturing processes and assembly techniques developed and optimized by Macro Sensors over decades of sensor manufacturing experience.