Diaphragm Strain Gauges for Pressure Sensors and Force T ransducers
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Diaphragm Strain Gauges for Pressure Sensors and Force Transducers Description BCM SENSOR diaphragm KA-series strain gauges are specially developed for manufacturing precision pressure sensors, while the KC-series strain gauge are for manufacturing precision force transducers. For the purpose of the specific application, the full-bridge 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. Ordering Information backing outer diameter 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 F: modified phenolic resin E: glass-fiber reinforced epoxy B: laminated polyetherketone I: polyimide resin titanium martensitic SS, mild steel austenitic SS, copper aluminum magnesium plexiglass 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) (2) CW : enamel insulated copper wires (30 mm) Notes: (1) The center distance of two grids only applies to the half-bridge and full-bridge strain gauges. (2) The maximum operating temperature range of enamel insulated copper wires (CW) is 150°C. BCM SENSOR TECHNOLOGIES BVBA Industriepark Zone 4, Brechtsebaan 2 website: www.bcmsensor.com B-2900 Schoten - Antwerpen, BELGIUM email: sales@bcm

Diaphragm Strain Gauges for Force and Pressure Transducers Technical Data KA Pattern Diaphragm Strain Gauges: 6.0mm, 350Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Grid Diameter Backing Diameter Gauge Type Backing Material (Working Temp.) Creep Code Solder-pad Finishing E: encapsulated O: open faced 11: martensitic steel (e.g., mild steel, 17-4PH SS) 16: austenitic steel (e.g., 304 SS), or copper 23: aluminum SP: naked solder pads SD: solder dots RL: round copper leads FR: flat copper leads CW: enamel insulated copper wires KA Pattern Diaphragm Strain Gauges:...

Diaphragm Strain Gauges for Force and Pressure Transducers KA Pattern Diaphragm Strain Gauges: Karma, 13.2mm, 2000Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Grid Diameter Backing Diameter 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 insulated copper wires KA Pattern Diaphragm...

Diaphragm Strain Gauges for Force and Pressure Transducers KA Pattern Diaphragm Strain Gauges: 19.0mm, 350Ω, 700Ω and 1000Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Grid Diameter Backing Diameter 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 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:...

Diaphragm Strain Gauges for Force and Pressure Transducers KA-A Pattern Diaphragm Strain Gauges: 6.0mm, 350Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Grid Diameter Backing Diameter Gauge Type Backing Material (Working Temp.) Creep Code Solder-pad Finishing E: encapsulated O: open faced 11: martensitic steel (e.g., mild steel, 17-4PH SS) 16: austenitic steel (e.g., 304 SS), or copper 23: aluminum SP: naked solder pads SD: solder dots RL: round copper leads FR: flat copper leads CW: enamel insulated copper wires KA-A Pattern Diaphragm Strain Gauges: 12.8mm, 350Ω...

Diaphragm Strain Gauges for Force and Pressure Transducers KA-A Pattern Diaphragm Strain Gauges: Karma, 12.8mm, 2000Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Grid Diameter Backing Diameter 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 insulated copper wires KA-A Pattern Diaphragm...

Diaphragm Strain Gauges for Force and Pressure Transducers KA-A Pattern Diaphragm Strain Gauges: 19.0mm, 350Ω, 700Ω and 1000Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Grid Diameter Backing Diameter 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 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:...

Diaphragm Strain Gauges for Force and Pressure Transducers KA-B Pattern Diaphragm Strain Gauges: 6.0mm, 350Ω Suggested Ordering Codes Schematic Diagram: Dimensions in mm and inch Grid Diameter Backing Diameter Gauge Type Backing Material (Working Temp.) Creep Code Solder-pad Finishing E: encapsulated O: open faced 11: martensitic steel (e.g., mild steel, 17-4PH SS) 16: austenitic steel (e.g., 304 SS), or copper 23: aluminum SP: naked solder pads SD: solder dots RL: round copper leads FR: flat copper leads CW: enamel insulated copper wires KA-B Pattern Diaphragm Strain Gauges: 12.8mm, 350Ω...