Strain Gauge Trainer | FortiTestX-28
Product Overview
The Strain Gauge Trainer FortiTestX-28 is a structural mechanics laboratory unit covering the fundamentals of strain gauge measurement under tension, bending, and torsion. This strain gauge trainer features three steel test specimens, each with four measurement sites in a complete bridge configuration, paired with a measuring amplifier offering +/- 2 mV/V range and 1 uV/V resolution. A Plexiglas cover protects and displays the measurement zones, while a digital multimeter and tare function support accurate, preload-compensated readings. Optional brass, copper, and aluminium tension bars extend the unit to modulus of elasticity experiments.
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Technical Specifications
Strain Gauge Trainer FortiTestX-28, Technical Specifications
| Parameter | Detail |
|---|---|
| Model Reference | FortiTestX-28 |
| Category | Strength of Materials and Structures |
| Test Specimens | Three steel test bodies: tension bar, bending bar, torsion bar |
| Strain Gauge Sites per Specimen | 4 |
| Bridge Configuration | Complete bridge |
| Plexiglas Cover | Yes, protects and displays measurement zones |
| Amplifier Measuring Range | +/- 2 mV/V |
| Amplifier Resolution | 1 uV/V |
| Tare Function | Yes, zeroing for preload compensation |
| Amplifier Supply Voltage | 10 V DC |
| Display | Digital multimeter (DMM) |
| Storage | Dedicated component box |
| Instruction Manual | Included |
| Optional Accessories | Tension bars in brass, copper, and aluminium |
Technical Data
Tension Bar
| Parameter | Value |
|---|---|
| Measuring Length | 65 mm |
| Cross-Section | 2 x 12 mm |
Bending Bar
| Parameter | Value |
|---|---|
| Length | 500 mm |
| Cross-Section | 5 x 20 mm |
Torsion Bar
| Parameter | Value |
|---|---|
| Length | 500 mm |
| Diameter | D = 10 mm |
Weights
| Weight | Quantity |
|---|---|
| 1 N hanger weight | 1 |
| 2 N weights | 2 |
| 1 kg weight | 1 |
| 2 kg weights | 4 |
Measuring Amplifier
| Parameter | Value |
|---|---|
| Measuring Range | +/- 2 mV/V |
| Resolution | 1 uV/V |
| Tare Function | Zeroing for preload error compensation |
| Supply Voltage | 10 V DC |
Key Features
Key Features
- Test Specimens: three steel test bodies covering tension, bending, and torsion loading
- Strain Gauge Sites: 4 measurement sites per specimen, complete bridge configuration
- Strain Gauge Trainer Loading: incremental specimen loading for sequential strain monitoring
- Specimen Mounting: quick and precise insertion into the experimental frame
- Measurement Protection: Plexiglas cover protects strain gauge zones and keeps them visible
- Amplifier Range: +/- 2 mV/V measuring range, 1 uV/V resolution
- Zero Balancing: tare function on digital display compensates for preloading
- Supply Voltage: 10 V DC via measuring amplifier
- Display: digital multimeter (DMM) for direct strain reading
- Storage: all components organised and stored in a dedicated component box
- Optional Accessories: brass, copper, and aluminium tension bars for modulus of elasticity determination
Experiments
- Fundamentals of measuring with strain gauges
- Strain gauge types and application techniques
- Calculation of mechanical deformations under tension, bending, and torsion
- Calculation of Poisson's ratio using tensile test
- Correlation between mechanical strain and electrical resistance in a strain gauge
- Determination of the modulus of elasticity from the measurement data of a tensile test
Construction and Design
The Strain Gauge Trainer FortiTestX-28 is constructed around three steel test specimens, each designed for a specific loading mode: tension, bending, and torsion. Each specimen carries four strain gauge measurement sites wired in a complete bridge configuration. The tension bar has a measuring length of 65 mm and a 2 x 12 mm cross-section. The bending bar is 500 mm long with a 5 x 20 mm cross-section. The torsion bar is 500 mm long with a 10 mm diameter. Specimens mount quickly and precisely into the frame for repeatable test setup. A Plexiglas cover shields the strain gauge zones from damage while maintaining clear visibility. The measuring amplifier provides 10 V DC bridge supply voltage and digitally displays bridge detuning in voltage units across a +/- 2 mV/V range at 1 uV/V resolution. A tare function zeroes out any preloading error before measurement begins. This strain gauge trainer stores all parts in a dedicated box for safe and organised transport and storage.
Scope of Delivery
- 1 experimental unit
- 1 instruction manual
- 3 sets of weights
- 1 digital multimeter
Optional Accessories
- Tension bars in brass, copper, and aluminium (for experimental determination of the modulus of elasticity)
Standards & Compliance
- Manufactured under ISO 9001:2015 Quality Management System
- CE Marking - European Conformity where applicable
- Supplied with calibration certificate, operation manual, and experiment guide
- 12-month manufacturer's warranty (parts & labour from installation)
Ordering & Delivery
- Incoterms: CIF to destination seaport, FOB Mundra/Nhava Sheva, or Ex-Works Ambala
- Lead time: 3–5 weeks production + sea transit to destination
- Payment: LC (Letter of Credit) or T/T bank transfer against proforma invoice
- Documentation: commercial invoice, packing list, bill of lading, certificate of origin, insurance certificate
Frequently Asked Questions
Q1: What loading modes does the Strain Gauge Trainer FortiTestX-28 cover?
The unit covers three loading modes: tension, bending, and torsion, each with a dedicated steel test specimen carrying four strain gauge measurement sites.
Q2: How are strain readings displayed on this strain gauge trainer?
The measuring amplifier digitally displays load-dependent bridge detuning in voltage values. A digital multimeter is also included for direct strain reading.
Q3: What is the resolution of the measuring amplifier?
The amplifier has a resolution of 1 uV/V across a measuring range of +/- 2 mV/V.
Q4: Can the FortiTestX-28 be used to determine the modulus of elasticity?
Yes. Optional tension bars in brass, copper, and aluminium are available as accessories to allow experimental determination of the modulus of elasticity.
Q5: Is there a way to compensate for preload errors before measurement?
Yes. The digital display includes a tare function that zeros out any preloading error before the experiment begins.