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    856-662-8000

  sales@macrosensors.com

7300 US Route 130 North, Building 22, Pennsauken, NJ, 08110-1541 USA
Phone: 856-662-8000
Fax: 856-317-1005

Spring Loaded LVDT Position Sensors

GPA 750 General Specifications
Input Voltage 3.0 Vrms (nominal)
Input Frequency 2.5 kHz
Linearity Error < ±0.25% of FRO
Operating Temperature 0 °F to +220 °F
-18 °C to +105 °C
Vibration Tolerance 20 g to 2 kHz
Shock Survival 100 g, 11 ms
  • Cost sensitive industrial gaging systems
  • Process control monitoring
  • Electronic dial indicators
  • Motion control
  • Ranges of ±0.050" to ±2.00" [±1.25 mm to
    ±50.0 mm]
  • Integral 6 conductor, 3 foot shielded cable
  • Non-linearity of less than ±0.25%
  • Interchangeable chrome plated / hardened tool steel tip (#9 AGD)
  • Standard 3/4" [19 mm] diameter

Macro Sensors has successfully bridged the gap between price and performance in industrial gaging applications with the GPA 750 Series Spring-Loaded AC-LVDT!

Incorporating customer suggestions, along with the most sought after features of the highly successful GHSA 750 Series, the GPA 750 has been designed and packaged to deliver a lower cost gaging alternative, without sacrificing the traditional quality and performance expected from Macro Sensors.

Internally, the sensor consists of a spring loaded probe/shaft assembly (force of 6 to 20 ounces, model dependent), which runs along two precision sleeve bearings. The end of the shaft is connected to the core of an LVDT. The coil of the LVDT is located inside the body. As the probe is depressed, the relative position of the core to the coil changes, thereby increasing the output of the LVDT. The output can then be connected to any standard (differential input) LVDT signal conditioner to create a variety of analog or digital outputs, or directly to the customers own conditioning electronics/system.

Externally, all machined parts are constructed of stainless steel. The front end of the GPA 750 Series has a 1/2-20 UNF 2A thread on the housing, allowing the user to install the LVDT into a mating threaded part, or alternatively, can be ‘bulkhead’ mounted using the two furnished hex nuts. The supplied contact tip on the probe end is an AGD standard number 9 made from chrome plated hardened tool steel, and is fully interchangeable with other AGD contact tips.

The electrical interface is via a 3 foot long, 32AWG, 6 conductor, teflon insulated/shielded cable. The entire package meets IEC standard IP-61.

Designed specifically to meet the needs of the industrial gaging and OEM market place, the GPA 750 Series is available in a variety of ranges from ±0.050 inch (±1.25 mm) to ±2.00 inches (±50.0 mm), with a maximum linearity error of ±0.25% of full range output (best-fit / least squares method).

Macro Sensors also offers a full line of LVDT signal conditioners that will deliver optimum performance from any GPA 750 Series Spring Loaded LVDT.

GPA 750 Series
GPA 750 Series Specifications
Parameter Unit of Measure GPA 750-050 GPA 750-125 GPA 750-250 GPA 750-500 GPA 750-1000 GPA 750-2000
Nominal Range inches ± 0.050 ± 0.125 ± 0.25 ± 0.50 ± 1.00 ± 2.00
mm ± 1.25 ± 3.0 ± 6.3 ± 12.5 ± 25.0 ± 50.0
Sensitivity mV/V/.001 in 6.1 3.9 2.5 0.65 0.61 0.37
mV/V/mm 240 153 98 26 24 14
Primary Impedance ohms 326 735 890 1200 1250 2150
Dimension "A" inches 4.66 5.35 6.06 10.6 12.94 20.96
mm 118.4 138.4 153.9 269.2 328.5 532.3
Dimension "B" inches 3.56 4.24 4.95 9.1 10.56 16.40
mm 90.3 107.6 125.6 231.1 268.1 416.4
Dimension "C" inches 2.02 2.68 3.40 5.93 7.39 10.9
mm 51.2 68.2 86.2 150.5 187.6 277.2
Weight - Body ounces 2.9 3.4 4.0 6.0 6.3 10.2
grams 82 96 113 170 179 290
GPA 750 Series Mechanical Drawing and Wiring Diagram
GPA 750 Series Ordering Information
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