Macro Sensors LVDTs: GHSER-750-A DC-LVDT, Single-Ended Air Extend/Spring Retract Spring-Loaded Probe

Description

The Macro Sensors GHSER 750-A Series of 3/4 inch diameter air-extend/spring-retract DC-LVDTs are designed for a wide range of cycled position measurement and automated dimensional gaging applications where it is necessary or desirable to move the probe out of the way between readings. 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. Electrical termination is through a radially mounted sealed connector, which results in a much reduced installed length. The mating connector plug is supplied with the unit.

The sensor consists of an air-extend/spring-retract shaft running in a precision sleeve bearing and connected to the core of an LVDT. The shaft is extended by introduction of a low-pressure (10-30 psi), clean, dry air supply, with a regulated flow, through a barbed fitting on the end of the unit for 1/4 inch I.D. hose. With the release of pressure, an internal spring returns the probe to its retracted position. The use of a precision sleeve bearing results in measurement repeatability of 0.0001 inches (2.5 ìm) or better. 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. The combination of air actuation and a through-bore design allows for repeated purging of the sensor's bearings to remove potential contaminants.

Built-in electronics result in position sensors that operate from a DC input and generate a precalibrated DC output with a true 0 V reference. The output from the GHSER 750-A Series is designed to operate in conjunction with many PLCs, digital indicators, A/D converters, computer based data processors, and QC data collection systems. Available in measurement ranges of 0.100 inch (2.5 mm) to 4.00 inches (100 mm), the maximum linearity error for a GHSER 750-A Series sensor is ±0.1% of full range output using a statistically best-fit straight line derived by the least squares method.

For simplified mounting the GHSER 750-A 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.

For additional information and important installation considerations, we strongly urge you to visit www.macrosensors.com/lvdt_macro_sensors/
lvdt_products/air_extend/


click the image for an enlarged view General Specifications Unit Specifications Mechanical Drawing & Wiring Diagram Ordering Information Tech Bulletin	Description The Macro Sensors GHSER 750-A Series of 3/4 inch diameter air-extend/spring-retract DC-LVDTs are designed for a wide range of cycled position measurement and automated dimensional gaging applications where it is necessary or desirable to move the probe out of the way between readings. 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. Electrical termination is through a radially mounted sealed connector, which results in a much reduced installed length. The mating connector plug is supplied with the unit. The sensor consists of an air-extend/spring-retract shaft running in a precision sleeve bearing and connected to the core of an LVDT. The shaft is extended by introduction of a low-pressure (10-30 psi), clean, dry air supply, with a regulated flow, through a barbed fitting on the end of the unit for 1/4 inch I.D. hose. With the release of pressure, an internal spring returns the probe to its retracted position. The use of a precision sleeve bearing results in measurement repeatability of 0.0001 inches (2.5 ìm) or better. 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. The combination of air actuation and a through-bore design allows for repeated purging of the sensor's bearings to remove potential contaminants. Built-in electronics result in position sensors that operate from a DC input and generate a precalibrated DC output with a true 0 V reference. The output from the GHSER 750-A Series is designed to operate in conjunction with many PLCs, digital indicators, A/D converters, computer based data processors, and QC data collection systems. Available in measurement ranges of 0.100 inch (2.5 mm) to 4.00 inches (100 mm), the maximum linearity error for a GHSER 750-A Series sensor is ±0.1% of full range output using a statistically best-fit straight line derived by the least squares method. For simplified mounting the GHSER 750-A 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. For additional information and important installation considerations, we strongly urge you to visit www.macrosensors.com/lvdt_macro_sensors/ lvdt_products/air_extend/	Features Low pressure air-extend / spring-retract plunger Full scale ranges of 0.100 inch to 4.00 inches 24 V DC input, precalibrated 0 to 10 V DC output with true 0 V reference. Non-linearity less than or equal to ±0.1% of FSO Repeatability of 0.0001 inch Radial connector with mating plug included Coil environmentally sealed to IEC IP-68 Applications Cycled measurement functions Industrial gaging systems Fabricated metal products gaging Large shaft TIR measurements