Haibo Sensor Foil BF350-AA linear Strain Gauge
The BF350-3AA-23-TO is a high-performance foil strain gauge engineered for design engineers and application technicians who require dependable, accurate strain measurement in demanding environments. Its precision uniaxial sensing capability makes it an ideal, off-the-shelf solution for integrating into load cells, pressure transducers, and force sensors—especially where consistent performance under varying conditions is critical.
Metal foil resistance strain gauges are the core sensing elements of various strain sensors. A foil strain gauge is a thin, flexible sensor that measures strain on an object. It consists of a metallic foil pattern mounted on a backing material. When the object deforms, the foil’s electrical resistance changes proportionally, allowing precise measurement of stress, load, or pressure.
Key Features & Advantages
- Gauge Type: Linear/Signal Alex
- Foil Material
- Operating Temperature Range: -50°C to +200°C.
- Grid Dimensions: The sensitive grid length is typically 3mm x 2mm
- Resistance: 350 Ohms (±0.35%).
The FB strain gauge is a strain gauge designed with two strain gauges. Unlike the BB strain gauge series, the FB strain gauges are parallel and are oriented in the same axis. Options are available for three or four terminal output.
The FG strain gauge is a strain gauge designed with four individual strain gauges arranged in Wheatstone bridge configuration.
Model: HB-BF
Technical parameters of the BF series
Resistance 120/350/1000
Sensitivity coefficient 2.08±1% (A level)
Dispersion scope ±1%
Average output coefficient
Model: HBF-GB-E
Resistance: 120-2000 (ohm)
Material: Foil
The EB strain gauge is a special strain gauge that incorporates 4 individual strain gauges oriented 90° apart and configured in a full bridge configuration. The full bridge configuration means the strain gauges are pre-wired internally so no additional connections are required. Only 4 terminals are available: 2 for input and 2 for output making it easy to install. Wiring options are available to accommodate different applications.
Model: HB-FB
Resistance: 120-2000 (ohm)
Material: Foil
Model: HBF-EB
Resistance: 120-2000 (ohm)
Material: Foil
Payment Terms: FOB OR EXW Shenzhen OR GUANGZHOU
4 Lead Wires
The BB strain gauge is a strain gauge designed with two strain gauges. The two strain gauges are oriented 90 degrees apart (or in a TEE configuration) and are designed to work in tandem in Half-Bridge configuration. Multiple configurations are available to address different mounting configurations with three or four terminal outputs.
The CA strain gauge is a strain gauge designed with 3 linear strain gauges. Unlike BB strain gauges, CA strain gauges are oriented in 45° to help simplify installation in special applications.
Model: HBBF-AA
Resistance: 120-2000 (ohm)
Material: Foil
Model: HBF-GB-D
Resistance: 120-2000 (ohm)
Material: Foil
The AB strain gauge is designed for Torsion and Shear applications. This type is in 1/4 Bridge configuration must be paired with other strain gauges for Shear and Torsional strain measurements.















