Linear Strain Gauges for Bending Beam Force Transducers

Transcription

1 Linear Strain s 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-face according to the requirement. The karma gauges can be manufactured with effective modulus compensation (EMC). The EMC gauges are mostly for manufacturing low-cost force transducers, because with the EMC 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,..., ". 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, please find its available creep code below its dimensions at the " on the following pages. For customized creep code, consult BCM SENSOR. For more information on self-temperature compensation (STC), creep compensation, and EMC of strain gauges, please refer to the corresponding articles respectively on the website of BCM SENSOR. Ordering Information gauge length in mm gauge resistance in Ohm backing layer metal foil gauge type gauge pattern number of gauges (1) center distance between two grids creep code of gauges solder-pads ordering code example: C: constantan K: karma gauge gauge material titanium martensitic SS, mild steel austenitic SS, copper aluminum magnesium plexiglass STC EMC N.A. M11 M16 M23 N.A. N.A. creep code N10, N9, N8, N7, N6, N5, N4, N3, N2, N1, O, P1, P2, P3, P4, F: modified phenolic resin I: modified polyimide resin B: laminated polyether-ketone A: advanced laminated polyimide L: laminated polyimide solder-pads finishing SD: tined solder dot, available only for karma gauges (2) RL: silver-coated round copper leads (30mm) (3) (2) CW : enamel insulated (30mm) Notes: (1) The center distance of two grids only applies to the half-bridge and full-bridge strain gauges. (2) The length of the leads and wires can be customized on request. (3) The highest operating temperature of enamel insulated (CW) is 150 C. 1/7

2 Linear Strain s Technical Data AA Pattern Single Linear Strain s: Karma, 0.8mm, 350Ω EKF AA-(11)-O-SD EKF AA-(23)-O-SD Variants: *1K* AA-(*7)-*9-*10 0 Material O AA Pattern Single Linear Strain s: Karma, 1.1mm, 350Ω EKF AA-(11)-O-SD EKF AA-(23)-O-SD Variants: *1K* AA-(*7)-*9-*10 0 Material N7 2/7

3 Linear Strain s AA Pattern Single Linear Strain s: 1.5mm, 350Ω and 1000Ω ECF AA-(11)-O-SP ECF AA-(23)-O-SP EKF AA-(11)-N5-SD EKF AA-(23)-N5-SD Variants: *1C* AA-(*7)-*9-*10, and *1K* AA-(*7)-*9-*10 0 Material 350 Ω: N10, N9, N8, N7, N6, N5, N4, N3, N2, N1, O, P1, P2, P3, P4, P6; 1000 Ω: N7, N5 AA Pattern Single Linear Strain s: 2.5mm, 350Ω and 1000Ω ECF AA-(11)-O-SP ECF AA-(23)-O-SP ECF AA-(11)-O-SP ECF AA-(23)-O-SP EKF AA-(11)-O-SD EKF AA-(23)-O-SD Variants: *1C* AA-(*7)-*9-*10, and *1K* AA-(*7)-*9-*10 0 Material N10, N9, N8, 700 Ω: O 3/7

4 Linear Strain s AA Pattern Single Linear Strain s: 3.2mm, 350Ω, 700Ω and 1000Ω ECF AA-(11)-O-SP ECF AA-(23)-O-SP ECF AA-(11)-O-SP ECF AA-(23)-O-SP EKF AA-(11)-O-SD EKF AA-(23)-O-SD 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 AA-(11)-O-SP Variants: *1C* AA-(*7)-*9-*10, *1C* AA-(*7)-*9-*10, and *1K* AA-(*7)-*9-*10 0 Material 4/7

5 Linear Strain s AA Pattern Single Linear Strain s: Karma, 3.2mm, 2000Ω EKF AA-(11)-O-SD EKF AA-(23)-O-SD Variants: *1K* AA-(*7)-*9-*10 Material AA Pattern Single Linear Strain s: 3.2mm, 1000Ω, 5000Ω ECF AA-(11)-O-SD ECF AA-(23)-O-SD EKF AA-(11)-O-SD EKF AA-(23)-O-SD Variants: *1C* AA-(*7)-*9-*10, and *1K* AA-(*7)-*9-*10 Material O 5/7

6 Linear Strain s AA Pattern Single Linear Strain s: 3.8mm, 350Ω, 700Ω, and 1000Ω ECF AA-(11)-O-SP ECF AA-(23)-O-SP ECF AA-(11)-O-SP ECF AA-(23)-O-SP EKF AA-(11)-O-SD EKF AA-(23)-O-SD Variants: *1C* AA-(*7)-*9-*10, *1C* AA-(*7)-*9-*10, and *1K* AA-(*7)-*9-*10 Material AA Pattern Dual- Linear Strain s: 5.0mm, 350Ω and 1000Ω ECF-350-5AA-(11)-O-SP ECF-350-5AA-(23)-O-SP ECF AA-(11)-O-SP ECF AA-(23)-O-SP EKF AA-(11)-O-SD EKF AA-(23)-O-SD Variants: *1C* AA-(*7)-*9-*10, *1C* AA-(*7)-*9-*10, and *1K* AA-(*7)-*9-*10 Material N4, N3, N2, O, P1, P2, P3, P4 6/7

7 Linear Strain s FB Pattern Dual- Linear Strain s: 2.1mm, 350Ω and 1000Ω ECF FB-(11)-O-SP ECF FB-(23)-O-SP EKF FB-(11)-O-SD EKF FB-(23)-O-SD Variants: *1C* FB-(*7)-*9-*10, and *1K* FB-(*7)-*9-*10 Material N3, O FB Pattern Dual- Linear Strain s: 3.2mm, 350Ω, 1000Ω ECF FB-(11)-O-SP ECF FB-(23)-O-SP EKF FB-(11)-O-SD EKF FB-(23)-O-SD Variants: *1C* FB-(*7)-*9-*10, and *1K* FB-(*7)-*9-*10 Material Note: The listed specifications and dimensions are subject to change without prior notice. 7/7