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FL 100: Strain Gauge Training System

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Strain Gauge Training System

Strain Gauge Training System Strain Gauge Training System Strain Gauge Training System

Product Details

Technical Description 
Strain gauges are used extensively in sensor systems to detect forces, moments and deformations. The FL 100 experimentation system provides a comprehensive introduction to the fundamentals of strain gauges. Three test specimens for tension, bending and torsion are each fitted with three strain gauges. The strain gauges are wired into a full bridge configuration. A defined load is generated with the aid of weights, and the elongations can then be recorded.
The specimens under test can be inserted quickly and precisely into the mounting frame. The strain gauge application area is protected by a Plexiglas cover, which also makes it clearly visible for inspection purposes. The measuring amplifier unit delivers the bridge supply voltage, and displays the load-dependent output voltage. The digital display is programmable, to provide readouts conforming to the variables being measured. It also features a tare function to exclude the influence of preloads.
All detachable test components are clearly laid-out and well-protected inside a storage box.
The well-structured instructional material outlines the technological fundamentals and provides a step-by-step guide through the experiments.

Three additional tensile test rods, in aluminium, copper and brass, are available as accessories, in order to obtain material-specific values from experiments.
Learning Objectives / Experiments

- Familiarisation with the fundamentals of measuring
  with strain gauges
- Familiarisation with strain gauge types and
  application techniques
- Calculation of the mechanical deformations under
  tension, bending and torsion
- Correlation between mechanical deformation and
  electrical response in a strain gauge
- Programming a digital display
* Basic introduction to measurement with strain
* Electronic measurement of mechanical variables1
* Test rods for tension, bending and torsion1
* Universal 1-channel measuring amplifier


[1] Experimentation system demonstrating the fundamentals of strain gauges
[2] Tensile, bending and torsion experiments using strain gauges in a full bridge configuration
[3] Test deformation of steel specimens
[4] Measuring amplifier unit with 4-digit digital display
[5] Programmable digital display
[6] Loading frame for mounting of measurement objects
[7] Frame opening wxh 480x450mm
[8] 230V, 50/60Hz, 1 phase or 120V, 50/60Hz, 1 phase

Technical Data

Tensile test rod:
- cross-section: 2x10mm
- measuring length: 50mm

Bending bar:
- length: 385mm
- cross-section: 5x20mm
Torsion test rod:
- length: 500mm
- D=10mm
Set of weights, small: 10x 0.5N, 1x 1N (hanger)
Set of weights, large: 1x 5N, 2x 10N, 1x 20N, 1x 5N (hanger)
Strain gauge application: full bridge, 350 Ohm
Amplifier unit:
- measuring range: +/-2mV/V
- resolution: 1µV/V
- zero balancing adjustment range: +/-1mV
- supply voltage: 10VDC

Dimensions and Weight

l x w x h : 560 x 410 x 610 mm (loading frame)
Weight : approx. 20 kg


230V, 50/60Hz, 1 phase or 120V, 50/60Hz, 1 phase

Scope of Delivery

1 frame
1 storage box with 3 strain gauge test objects, 2 sets
   of weights, 2 Allen keys
1 measuring amplifier with strain gauge connecting
1 set of instructional material

Order Details

021.10000  FL 100  Strain Gauge Training System

Available accessories
FL 100.01 -- Tension Rod, Brass
FL 100.02 -- Tension Rod, Copper
FL 100.03 -- Tension Rod, Aluminum
Alternative products
FL 102 -- Strain Gauge Calibration Apparatus

SELKA GmbH, Hamburg
Grindelallee 188, 20144 Hamburg / Germany
Tel.: + 49 (0) 40 343453 |  Fax: +49 (0) 40 63657075
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