Strain Gauge Displacement Sensor | Linear Position Sensor | AML/SGD

Highly Accurate, Long-Life, with a Low Power Consumption


Applied Measurements AML/SGD strain gauge displacement sensor utilises strain gauge technology to provide a linearly proportional voltage output in relation to the movement of a captivated spindle.

Available in ranges from 0-5mm up to 0-100mm, the strain gauge displacement transducer offers excellent accuracy of better than 0.1% on ranges up to 0-25mm and 0.2% on the 0-50mm and 0-100mm versions, coupled with high resolution and long-term stability.

The strain gauge bridge design operates using minimal current, making the AML/SGD suitable for use in battery-powered systems and equipment.

Common applications for Applied Measurements AML/SGD include Geotechnical Testing, R&D, Aerospace, Civil Engineering and Automotive.


  • Stroke Ranges: 0-5mm to 0-100mm
  • mV/V Output
  • Environmental Protection: IP54
  • Spring Loaded
  • High Accuracy
  • Ideal for Battery-Powered Systems – Thanks to its low power consumption.
  • High Accuracy Guaranteed – With its strain gauge based measuring system.
  • Long Life – The AML/SGD will still work reliably and accurately even after 10 million cycles.
  • Let Us Do The Hard Work For You – We can supply the AML/SGD with a wide range of standard analogue and digital equipment.


Stroke Length: 0-5 0-10 0-25 0-50 0-100 millimetres
Spring Force: 150-400 50-300 50-300 50-250 120-400 gf (progressive)
Rated Output: 4.2 5.1 6.7 9.0 7.5 mV/V (nominal)
Non-Linearity; Hysteresis + Repeatability
(Total Error):
<0.10 <0.20 ±% of Rated Output
Operating Temperature Range: -10 to +70 °C
Temperature Effect On Output: <0.010 ±% of Rated Output/°C
Temperature Effect On Zero: <0.010 ±% of Rated Output/°C
Safe Overload: See note 4 below
Excitation: 10 recommended (2-15 acceptable) Volts AC or DC
Current Consumption: <30 @ 10Vdc mA
Input Resistance: 350 Ohms (nominal)
Output Resistance: 350 Ohms (nominal)
Insulation Resistance: >2000 Megohms
Output Bandwidth: 100 Hz (nominal)
Construction: Stainless Steel/Aluminium
Environmental Protection: IP54
Cable: 2m, 4 core Screened (min bend radius 10mm)
Weight (excluding cable): 125 130 140 180 320 grams
Operational Notes:
1. The outer case must not be distorted when clamping the sensor. A full diameter clamp is advised.
2. The sensor is not recommended for use in hostile environments without additional protection.
3. Special tools are required to remove the plunger tip (anvil) to avoid damage to the spindle.
4. With the plunger tip (anvil) attached this forms a positive overload protection stop.
If the anvil is removed, the threaded end of the plunger must not be allowed to enter the case.

Product Dimensions

AML/SGD Strain Gauge Displacement Sensor Outline Drawing
Stroke Range ØA B C ØD*
5mm 17.4 88.8 6 4.8
10mm 17.4 88.8 11 4.8
25mm 17.4 104.5 26 4.8
50mm 17.4 157 51 4.8
100mm 25.4 264 102 4.8

AML/SGD Displacement Sensor Mounting Clamps:

Single End Clamp Types:
SMC17 Mounting Clamp (0-5 to 0-50mm Ranges)
SMC25 Mounting Clamp (0-100mm Range Only)

Materials Clamp Bar Anodised Aluminium
Ring & Fixings Stainless Steel

Note: Clamp bar can be machined to suit applications.

AML/SGD Strain Gauge Displacement Sensor Mounting Clamps Diagram
Type DIM A Sensor Diameter
SMC-17 110 Ø17.4
SMC-25 115 Ø25.4
AML/SGD Strain Gauge Displacement Sensor Wing Nut Diagram

Double End Clamp Types:
DMC17 Double End Mounting Clamp (0-5 to 0-50mm Ranges)
DMC25 Double End Mounting Clamp (0-100mm Range Only)

Materials Clamp Bar Anodised Aluminium
Ring and Fixings Stainless Steel

AML/SGD Strain Gauge Displacement Sensor Double End Clamps Diagram
AML/SGD Strain Gauge Displacement Sensor Mounting Post Diagram


AML/SGD-25mm-002-000 (example code) AML/SGD 25mm 002 000
Product Family
Stroke Range
0-5mm 5mm
0-10mm 10mm
0-25mm 25mm
0-50mm 50mm
0-100mm 100mm
Cable Length (in metres)
0.2 = 0.2 metres 0.2
002 = 2 metres 002
Specials Code
000 = Standard Product (as per datasheet) 000
Code Details
AML/SGD-DMC17 Double mounting clamp for AML/SGD 0-5mm to 0-50mm ranges
AML/SGD-DMC25 Double mounting clamp for AML/SGD-100mm
AML/SGD-SMC17 Mounting clamp for AML/SGD 0-5mm to 0-50mm ranges
AML/SGD-SMC25 Mounting clamp for AML/SGD-100mm


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