Catalog excerpts
Linear Strain Gauges for Bending Beam Force Transducers Description BCM SENSOR linear strain gauges are specially developed for manufacturing precision force transducers which employ bending beam working principle. For the purpose of this specific application, the linear strain gauges are temperature and creep compensated, and they can be either encapsulated or open-faced according to the requirement. The karma gauges can be manufactured with effective modulus compensation (E.M.C.). The E.M.C. gauges are mostly for manufacturing low-cost force transducers, because with the E.M.C. gauges the manufacturers can eliminate the use of compensation resistors and achieve the sensitivity compensation. For creep compensation, there are 18 creep codes: “N10, N9, N8, ..., O, ..., P5, P6, P7". The “N10” is the most negative creep code, while the “P7" is the most positive one. The “O” stands for a moderate creep code. For a specific strain gauge, see its available creep code in the table below. For customized creep code, consult BCM SENSOR. For more information on temperature compensation (S.T.C.), creep compensation, and E.M.C. of strain gauges, please refer to the corresponding articles respectively on the website of BCM SENSOR. Listed in the following table is the linear gauges available in stock for quick delivery. Ordering Information gauge length gauge pattern S.T.C. or E.M.C. number of gauges center distance of two grids backing material foil alloy creep code of gauges solder-pads gauge type ordering code example: material C: constantan K: karma E: encapsulated gauge O: open-faced gauge titanium martensitic SS, mild steel austenitic SS, copper aluminum magnesium plexiglass F: modified phenolic resin E: glass-fiber reinforced epoxy B: laminated polyetherketone I: polyimide resin A: advanced polyimide G: glass-fiber reinforced polyimide solder-pads finishing SP: naked solder pads SD: tined solder pads (solder dot) RL: silver-coated round copper leads (30mm) FR: silver-coated flat copper leads (30mm) CW: enamel insulated copper wires (30 mm) Note: (1) The center distance of two grids only applies to the half-bridge and full-bridge strain gauges. BCM SENSOR TECHNOLOGIES BVBA Industriepark Zone 4, Brechtsebaan 2 website: www.bcmsensor.com B-2900 Schoten - Antwerpen, BELGIUM email: sales@bcms
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Linear Strain Gauges for Bending Beam Force Transducers Technical Data AA Pattern Single Grid Linear Strain Gauges: Karma, 0.8mm, 350Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Gauge Length Grid Width Backing Length Backing Width Gauge Type Backing Material (Working Temp.) Creep Code Solder-pad Finishing E: encapsulated O: open faced 11 or M11: martensitic steel (e.g., mild steel, 17-4PH SS) 16 or M16: austenitic steel (e.g., 304 SS), or copper 23 or M23: aluminum SP: naked solder pads SD: solder dots RL: round copper leads FR: flat copper leads CW: enamel...
Open the catalog to page 2
Linear Strain Gauges for Bending Beam Force Transducers AA Pattern Single Grid Linear Strain Gauges: 1.5mm, 350Ω and 1000Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Gauge Length Grid Width Backing Length Backing Width Gauge Type Backing Material (Working Temp.) Creep Code Solder-pad Finishing 11 or M11: martensitic steel (e.g., mild steel, 17-4PH SS) 16 or M16: austenitic steel (e.g., 304 SS), or copper 23 or M23: aluminum Note: E.M.C. is only for karma (K) gauges. SP: naked solder pads SD: solder dots RL: round copper leads FR: flat copper leads CW: enamel...
Open the catalog to page 3
Linear Strain Gauges for Bending Beam Force Transducers AA Pattern Single Grid Linear Strain Gauges: 3.2mm, 350Ω, 700Ω and 1000Ω Suggested Ordering Codes ECF-350-3.2AA-(11)-O-SP ECF-350-3.2AA-(23)-O-SP ECF-700-3.2AA-(11)-O-SP ECF-700-3.2AA-(23)-O-SP EKF-1000-3.2AA-(11)-O-SD EKF-1000-3.2AA-(23)-O-SD Schematic Diagram: Dimensions in mm and inch Gauge Length Grid Width Backing Length Backing Width Note: Previously the gauge length of these gauges were indicated as “3” instead of “3.2”. For instance, the ordering codes were: ECF-350-3AA-(11)-O-SP EKF-1000-3AA-(11)-O-SP Gauge Type Backing...
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Linear Strain Gauges for Bending Beam Force Transducers AA Pattern Single Grid Linear Strain Gauges: Karma, 3.2mm, 2000Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Gauge Length Grid Width Backing Length Backing Width Gauge Type Backing Material (Working Temp.) Creep Code Solder-pad Finishing 11 or M11: martensitic steel (e.g., mild steel, 17-4PH SS) 16 or M16: austenitic steel (e.g., 304 SS), or copper 23 or M23: aluminum SP: naked solder pads SD: solder dots RL: round copper leads FR: flat copper leads CW: enamel insulated copper wires E: encapsulated O: open...
Open the catalog to page 5
Linear Strain Gauges for Bending Beam Force Transducers AA Pattern Single Grid Linear Strain Gauges: 3.8mm, 350Ω, 700Ω, and 1000Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Gauge Length Grid Width Backing Length Backing Width Gauge Type Backing Material (Working Temp.) Creep Code Solder-pad Finishing 11 or M11: martensitic steel (e.g., mild steel, 17-4PH SS) 16 or M16: austenitic steel (e.g., 304 SS), or copper 23 or M23: aluminum Note: E.M.C. is only for karma (K) gauges. SP: naked solder pads SD: solder dots RL: round copper leads FR: flat copper leads CW:...
Open the catalog to page 6
Linear Strain Gauges for Bending Beam Force Transducers FB Pattern Dual-Grid Linear Strain Gauges: 2.1mm, 350Ω and 1000Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Gauge Length Grid Width Backing Length Backing Width Gauge Type Backing Material (Working Temp.) Creep Code Solder-pad Finishing 11 or M11: martensitic steel (e.g., mild steel, 17-4PH SS) 16 or M16: austenitic steel (e.g., 304 SS), or copper 23 or M23: aluminum Note: E.M.C. is only for karma (K) gauges. E: encapsulated O: open faced SP: naked solder pads SD: solder dots RL: round copper leads FR: flat...
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