SKU: SENS-1600
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BF350 High Precision Resistance Strain Gauge / Pressure Sensor / Weighing Sensor 350 Ohm

₹24.00 (Inclusive of all taxes)
Out of Stock

The BF350 is a high-precision 350Ω foil strain gauge designed for direct strain measurement on components, offering excellent stability and accuracy for pressure and weighing sensor applications. It is suitable for integration into 0.02-level precision manufacturing systems and custom sensor builds.

Features

  • High-precision foil strain gauge with 350Ω nominal resistance and ≤±0.1% tolerance
  • Designed for 0.02-level manufacturing, ensuring minimal output deviation
  • Features automatic temperature and creep compensation for stable long-term performance
  • Robust construction with modified phenolic backing and Cuni gate wire
  • Compact dimensions of 7.4mm x 4.4mm for versatile mounting

Out of stock

Description

The BF350 is a precision metal foil strain gauge that converts mechanical strain into a proportional change in electrical resistance. Its fully-closed structure protects the sensitive grid, ensuring reliable data transmission and high immunity to environmental interference. The gauge is engineered for high-accuracy applications, including the manufacture of pressure transducers and load cells where output deviation must be tightly controlled.

With a strain limit of 2.0% and a fatigue life exceeding 1 million cycles, the BF350 offers durability for dynamic and static measurements. Its operating temperature range of -30°C to +80°C and built-in compensation mechanisms make it suitable for use in varied industrial environments, from laboratory test benches to embedded OEM sensor systems.

Key Features

  • High-precision 350Ω foil strain gauge with ≤±0.1% resistance tolerance
  • Optimized for 0.02-level sensor manufacturing with minimal output deviation
  • Automatic compensation for temperature and creep enhances long-term stability
  • Durable construction with modified phenolic backing and Cuni (copper-nickel) gate wire
  • Fully-closed protective structure ensures signal integrity and safety
  • High strain limit of 2.0% and fatigue life ≥1,000,000 cycles
  • Compact footprint (7.4mm x 4.4mm) for integration into tight spaces
  • Sensitivity coefficient (Gauge Factor) between 2.00 and 2.20

Applications

  • Precision load cell and weighing sensor construction for industrial scales
  • Embedded strain sensing in pressure transducers and manometers
  • Structural health monitoring and stress analysis in mechanical components
  • Force and torque measurement in automotive and aerospace testing rigs
  • OEM integration into high-accuracy 0.02-level manufacturing systems

Technical Specifications

Model SeriesBF Series
Resistance350 Ω
Resistance Tolerance≤ ±0.1%
Sensitivity Coefficient (Gauge Factor)2.00 – 2.20
Strain Limit2.0%
Fatigue Life≥ 1,000,000 cycles
Contrast Ratio (Min)800:1 (Transmission)
Operating Temperature-30°C to +80°C
Dimensions (L x W)7.4 mm x 4.4 mm
Backing MaterialModified Phenolic
Gate Wire MaterialCuni (Copper-Nickel Alloy)

Frequently Asked Questions

What is the nominal resistance and tolerance of the BF350 strain gauge?

The BF350 strain gauge has a nominal resistance of 350 ohms with a very tight tolerance of ≤ ±0.1%. This high precision is essential for constructing accurate load cells and pressure sensors where minimal output deviation is required.

What is the operating temperature range for this strain gauge?

The BF350 is rated for operation from -30°C to +80°C. It incorporates automatic temperature compensation to minimize the effect of thermal expansion on its resistance output, ensuring stable readings across this wide range.

How do I install and wire the BF350 strain gauge?

The BF350 is a passive sensor that must be bonded directly to the component under test using a suitable strain gauge adhesive. It is typically wired into a Wheatstone bridge circuit. The two solder tabs are for connecting the gauge's 350Ω element to your signal conditioning electronics.

What does a 'sensitivity coefficient' or 'gauge factor' of 2.00-2.20 mean?

The sensitivity coefficient, or gauge factor (GF), defines the strain gauge's sensitivity. A GF between 2.00 and 2.20 means that for every unit of mechanical strain (e.g., 1 microstrain), the electrical resistance changes by approximately 2.00 to 2.20 times that amount. This value is used to calculate the actual strain from the measured resistance change.

Package Includes

  • 1 x BF350 High-Precision Resistance Strain Gauge

Additional Information

Weight 0.005 kg
Dimensions 0.74 × 0.44 cm