Datasheet

BCM SENSOR TECHNOLOGIES BVBA
Brechtsebaan 2
B-2900 Schoten - Antwerpen, BELGIUM
Industriepark Zone 4,
Tel.: [phone]
Fax: [phone]
website: www.bcmsensor.com
email: [e-mail]
Linear Strain Gauges
for Bending Beam Force Transducers
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, ..., 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, please find its available creep code below its dimensions at the “Option *9" 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
Description
ordering code example:
gauge length in mm
gauge resistance in Ohm
backing layer
metal foil
gauge type
gauge pattern
STC or EMC number of gauges
(1)
center distance between two grids
creep code of gauges
solder-pads
C: constantan
K: karma
E: encapsulated gauge
O: open-face gauge
material
titanium
martensitic SS, mild steel
austenitic SS, copper
aluminum
magnesium
plexiglass
STC
9
11
16
23
27
65
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, P5, P6, P7
solder-pads finishing
SP: naked solder pads
SD: tined solder dot, available only for karma gauges
RL: silver-coated round copper leads (30mm)
(2)
FR: silver-coated flat copper leads (30mm)
(2)
(3)
CW : enamel insulated copper wires (30mm)
(2)
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 copper wires (CW) is 150°C.
1/7
F: phenolic resinmodified
B: laminated polyether-ketone
I: polyimide resinmodified
A: advanced laminated polyimide
L: laminated polyimide
EMC