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BF series Composite strain gauge

BF series composite strain gauges are developed for measurement on composite materials, and are designed with a proprietary special grid pattern to reduce the stiffening effect of the strain gauges. Models are available for materials with coefficients of thermal expansion of 3 × 10-6/℃, 5 × 10-6/℃、8 × 10-6/℃ allowing use with ceramics, carbon, composite materials, etc. 
A new series of strain gauges bearing the CE mark, GOBLET, has been added. This CE-compliant series of products is compliant with RoHS directives. These gauges exceed the capabilities of conventional strain gauges with lead-free soldering as well as a unique tab design. CE-compliant extension lead wires are also available.

Applicable specimen Composite material
Operationaltemperature BF GOBLET ：-30 to +200 ℃
BF：-20 to ＋200 ℃
Temperature compensation range +10 to +80 ℃
Applicable adhesive CN, NP-50B, EB-2
Backing Polyimide
Element Cu-Ni
Strain limit 3% (30000 x 10-6 strain)
Fatigue life at room temperature 1 x 106 (±1500 x 10-6 strain)

  • COMPOSITE MATERIALS USE　goblet_log_sCE

    Single-element / Plane type two-element / Plane type three-element

    Single-element 

    Gauge pattern Type Gauge
    length
    (mm)    		 Gauge
    width
    (mm)    		 Backing
    length
    (mm)    		 Backing
    width    		 Resistance
    (Ω)
    bflab_28 BFLAB-2-3
    BFLAB-2-5
    BFLAB-2-8    		 2 0.9 7.6 2.5 120
    BFLAB-5-3
    BFLAB-5-5
    BFLAB-5-8    		 5 1.5 12.3 3.3 120

    Each package contains 10 gauges.
    * Attachment of lead wiring can be performed (made-to-order).

     

    Stacked-type two-element

    Gauge pattern Type Gauge
    length
    (mm)    		 Gauge
    width
    (mm)    		 Backing
    length
    (mm)    		 Backing
    width
    (mm)    		 Resistance
    (Ω)
    bfcab_28 BFCAB-2-3
    BFCAB-2-5
    BFCAB-2-8    		 2 1.3 8.0 8.0 120
    BFCAB-5-3
    BFCAB-5-5
    BFCAB-5-8    		 5 1.5 11.5 11.5 120

    Each package contains 10 gauges.
    * Attachment of lead wiring can be performed (made-to-order).

     

    Stacked-type three-element

    Gauge pattern Type Gauge
    length
    (mm)    		 Gauge
    width
    (mm)    		 Backing
    length
    (mm)    		 Backing
    width
    (mm)    		 Resistance
    (Ω)
    bfrab_28 BFRAB-2-3
    BFRAB-2-5
    BFRAB-2-8    		 2 1.3 8.0 8.0 120
    BFRAB-5-3
    BFRAB-5-5
    BFRAB-5-8    		 5 1.5 11.5 11.5 120

    Each package contains 10 gauges.
    * Attachment of lead wiring can be performed (made-to-order).

  • COMPOSITE MATERIALS USE

    Single-element / Plane type two-element / Plane type three-element

    Single-element 

    Gauge pattern Type Gauge
    length
    (mm)    		 Gauge
    width
    (mm)    		 Backing
    length
    (mm)    		 Backing
    width
    (mm)    		 Resistance
    (Ω)
    bfla_23 BFLA-2-3
    BFLA-2-5
    BFLA-2-8    		 2 0.9 7.6 2.5 120
    BFLA-5-3
    BFLA-5-5
    BFLA-5-8    		 5 1.5 12.3 3.3 120

    Each package contains 10 gauges.
    * Attachment of lead wiring can be performed (made-to-order).

     

    Stacked-type two-element

    Gauge pattern Type Gauge
    length
    (mm)    		 Gauge
    width
    (mm)    		 Backing
    length
    (mm)    		 Backing
    width
    (mm)    		 Resistance
    (Ω)
    bfca_23 BFCA-2-3
    BFCA-2-5
    BFCA-2-8    		 2 1.3 8.0 8.0 120
    BFCA-5-3
    BFCA-5-5
    BFCA-5-8    		 5 1.5 11.5 11.5 120

    Each package contains 10 gauges.
    * Attachment of lead wiring can be performed (made-to-order).

     

    Stacked-type three-element

    Gauge pattern Type Gauge
    length
    (mm)    		 Gauge
    width
    (mm)    		 Backing
    length
    (mm)    		 Backing
    width
    (mm)    		 Resistance
    (Ω)
    bfra_23 BFRA-2-3
    BFRA-2-5
    BFRA-2-8    		 2 1.3 8.0 8.0 120
    BFRA-5-3
    BFRA-5-5
    BFRA-5-8    		 5 1.5 11.5 11.5 120

    Each package contains 10 gauges.
    * Attachment of lead wiring can be performed (made-to-order).

  • Lead wires recommended for BF series strain gauges (made-to-order)
    Purpose Lead wires Lead wire symbol Operating temperature range
    (℃ )    		 Gauge type exampled
    General measurement (no temperature change) 2-wire parallel vinyl wire LJB/LJB-F －20 to +80 BFLA-2-3-3LJB
    2-wire parallel vinyl wire LJC/LJC-F BFLA-2-3-3LJC
    General measurement 3-wire parallel vinyl wire LJBT/LJBT-F －20 to +80 BFLA-2-3-3LJBT
    3-wire parallel vinyl wire LJCT/LJCT-F BFLA-2-3-3LJCT
    Medium/high temperature 3-wire parallel special vinyl wire LXT/LXT-F －20 to +150 BFLA-2-3-3LXT
    3-strand twisted FEP single-core wire 6FB○LT/6FB○LT-F －269 to +200 BFLA-2-3-6FB3LT
    Temperature-integrated 3-wire parallel vinyl wire TLJBT/TLJBT-F －20 to +80 BFLA-2T-3-3TLJBT
    3-strand twisted FEP single-core wire 6FB♦TLT －269 to +200 BFLA-2T-3-6FB3TLT

    * "♦" indicates lead wire length
    * Only lead wires using lead-free solder are available for GOBLET series strain gauges with the CE marking.

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