Your Professional Single Bridge Strain Gauge Supplier
Xian Baochen Information Technology Co., Ltd. is located in high-tech Zone, Xi 'an, Shaanxi Province, China, is a focus on sensors, transmitters, inverters, power semiconductor devices and supporting instruments R & D, manufacturing, sales and service enterprises. The company invests in research and development team, cooperates with excellent universities, integrates industry resources, and provides the best quality solutions for domestic and foreign users. Enterprise mission: to meet user needs and create value for customers.
Why choose us
Sales Market
We Products are exported to Europe, America, Southeast Asia, West Asia, Central Asia and other countries around the world. Our products are well received in these markets.
Our Service
Able to quickly respond to customer needs, to provide personalized customization, timely delivery, professional technical support and perfect after-sales service.
Strict Quality Control System
Able to efficiently produce large quantities of products, advanced production processes and stable supply chains, the implementation of strict quality control system. Constantly introduce new technologies and new materials to improve product performance and production efficiency.
Wide Range of Applications
Through the EU CE, RoHs testing, products are widely used in petrochemical, water conservancy and hydrology, machinery and equipment, automobile manufacturing, industrial process control, weighing measurement, people's livelihood applications and other fields.
Single Bridge Strain Gauge
A single-bridge strain gauge is the most basic bridge configuration for strain measurement.The default construction of a strain gauge transducer uses a full Wheatstone bridge often with multiple backings distributed around the transducer hardware. This offers the best accuracy and insensitivity to off-axis loading, but for lower-cost sensors a single full-bridge pattern can be used. This represents several advantages over two or more backings, the most obvious is the reduced labour to install the strain gauge. The single backing and foil offers better temperature response not just due to the locality of the sensing elements but also because thermal output scatter is virtually eliminated.
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Parameters |
BF Series |
BF Series |
BA Series |
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Backing material |
Phenolic |
Modified phenolic |
Polyimide |
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Grid material |
Constantan |
Karma |
Constantan(Karma) |
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Typical resistance |
120/350/1000 |
350 /1000/2000 |
350 / 1000 |
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Average resistance tolerance |
≤ ±0.1% |
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Typical sensitivity |
2.00~2.20 |
1.80~2.20 |
1.86~2.20 |
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Sensitivity coefficient dispersion |
≤ ±0.1% |
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Strain limit |
2% |
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Fatigue life |
≥ 107(±1000) |
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Operating temp. range |
-30~+80 |
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Temp. self-compensation coefficient |
9, 11,16,23,27 |
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Advantages of Single Bridge Strain Gauge
Low Hardware Cost
Requiring only one strain gauge and three fixed resistors to form a bridge, hardware costs are reduced by 50%-75% compared to full-bridge (four strain gauges) or half-bridge (two strain gauges) configurations.
Low Maintenance Cost
The simple structure reduces failure points. Repairs require only a single strain gauge replacement, resulting in efficient and cost-effective maintenance.
High Installation Flexibility
The single strain gauge is compact (typically 3×5mm) and can be easily attached to curved surfaces or confined spaces (such as pipes and mechanical joints).
Low Operational Requirement
Basic operation requires no specialized training, making it suitable for teaching experiments or temporary measurement tasks.
Excellent Fatigue Resistance
The single strain gauge's simple structure and limited mechanical stress concentration points make it less susceptible to fatigue fracture under long-term dynamic loads.
Environmental Adaptability
Rated up to IP67, it can withstand temperatures ranging from -40°C to +125°C, making it suitable for outdoor and harsh industrial environments.
Applications of Single Bridge Strain Gauge
Bridges
Monitor deformation and stress accumulation over time to prevent accidents.
Tunnels
Detect rock mass strain and implement timely support measures.
Buildings
Measure stress changes in concrete or steel structures to assess safety.
Pressure equipment
Monitor load changes to prevent overload.
Printed circuit boards
Test strength and strain to optimize design.
Experimentation and R&D
Test material mechanical properties (such as tension and compression). Measure mold deformation to improve production processes.
Wheatstone Bridge Structure
The bridge consists of four resistor arms. In a single-bridge configuration:
One arm is a strain gauge (variable resistor R + ΔR), and the remaining three arms are fixed resistors (R).
When the strain gauge's resistance changes due to deformation (ΔR ≪ R), the bridge's output voltage, V out,is linearly related to the strain:
Where $K$ is the strain gauge sensitivity coefficient, and $\varepsilon$ is the strain.
Signal Conversion
When the strain gauge deforms with the object being measured, the resistance of its metal foil grid changes (due to cross-sectional contraction, length change, or a change in material resistivity). The bridge detects the output voltage and calculates the strain value.
Setting of Single Bridge Strain Gauge
Choosing the Right Strain Gauge
Select a strain gauge that matches the material and surface to which it will be applied. Consider factors such as gauge factor, temperature coefficient, and size.
Precision Resistors
Use precision resistors for the remaining three resistors in the bridge to ensure stability and accuracy. These resistors should have a low temperature coefficient to minimize temperature-induced errors.
Voltage Supply
Provide a stable and precise voltage supply to the bridge. The voltage level influences the sensitivity of the measurement, so choose an appropriate level that balances sensitivity with power consumption.
Calibration and Measurement of Single Bridge Strain Gauge
Calibration is a critical step in ensuring the accuracy of strain gauge measurements. This involves applying known levels of strain to the gauge and recording the corresponding output voltage. Use this data to create a calibration curve, which will help translate voltage readings into meaningful strain values.
Temperature Compensation
Strain gauges are sensitive to temperature changes, which can affect resistance. Implementing temperature compensation techniques, such as using a dummy gauge or half-bridge configurations, can improve measurement accuracy.
Data Acquisition
Use a high-quality data acquisition system to record the output voltage from the bridge. The system should have high resolution and low noise characteristics to capture small changes in resistance accurately.
FAQ
As one of the leading single bridge strain gauge manufacturers and suppliers in China, we warmly welcome you to wholesale cheap single bridge strain gauge in stock here from our factory. All customized products are with high quality and competitive price.
single bridge strain gauge