LVDT Position Sensors by

Description

The Macro Sensors GHSIR 750 Series of 3/4 inch diameter spring-loaded, loop-powered LVDTs are designed for a wide range of position monitoring, feedback, and dimensional gaging applications. These rugged hermetically sealed sensors are constructed entirely of stainless steel and intended for general industrial use. The coil windings are sealed against hostile environments to IEC standard IP-68. The input/output connections are made through a radially mounted sealed connector, which results in a much reduced installed length. A mating connector plug is supplied with each unit. The through-bore design allows for air purging of the sensor’s bearings to remove potential contaminants.

The sensor consists of a spring loaded shaft running in a precision sleeve bearing and connected to the core of an LVDT. The use of a precision sleeve bearing results in measurement repeatability of 0.0001 inches (2.5 ìm) or better. The probe shaft is fully extended by a spring exerting a nominal force of 6 to 20 ounces depending upon total range. The contact tip supplied is an AGD standard number 9 made from black oxide hardened tool steel. It is fully interchangeable with other 4-48-threaded AGD contact tips.

GHSIR 750 Series transmitters offer the frictionless operation, high resolution, excellent repeatability, and low hysteresis associated with LVDT technology, along with the convenience and simplicity of a precalibrated 4-20 mA current loop operation. The unit can be operated as either 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.

Available in ranges of 0.100 inch (2.5 mm) to 4.00 inches (100 mm), the maximum linearity error for a GHSIR 750 Series sensor is ±0.10% of full range output using a statistically best-fit straight line derived by the least squares method.

For simplified mounting the GHSIR 750 Series has a 1/2-20 UNF-2A thread on the front of the housing, permitting the user to install the LVDT in a mating threaded part or by using the two hex nuts furnished with the sensor. This results in a ready-to-use package for position measurements and longer range gaging applications.

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