Precio FOB
Obtener el precio más reciente0.35 ~ 5 USD / Piece ( Negotiable )
|100 Piece Minimum Order
País:
China
N º de Modelo:
AA quarter bridge strain gauge
Precio FOB:
0.35 ~ 5 USD / Piece ( Negotiable )Obtener el precio más reciente
Lugar de origen:
China
Precio de pedido mínimo:
0.35 per Piece
Cantidad de pedido mínimo:
100 Piece
Detalle de embalaje:
carton
El tiempo de entrega:
15 days
Capacidad de suministro:
35000 Piece per Month
Tipo de pago:
T/T, L/C, D/A, D/P, Western Union, Money Gram, PayPal, Other
Grupo de productos :
Persona de contacto Judy Zhou
Xian, Shaanxi
Strain gauges are usually installed on a surface whether it is for stress analyses or sensor production,without any external force applied to the surface.When environmental temperature changes,the resistance of the strain gauge changes accordingly.This phenonmenon is called the strain gauges thermal output.This thermal output is the result of interactions and superposition of the resistance temperature coefficient of grid materials,the sensiitive grid materials and the linear expansion coefficient.
Common strain gauges often have a large thermal output . Thermal output is the biggest source of errors in static strain measurements,When temperature increases the dispersion and therefore the thermal output value increase.Ideally the thermal output of strain gauges should be zero.To meet this requirement a self-temperature compensating strain gauge is used.
y adjusting the composition ratio of the alloys of the strain gauge sensitivity grid material,and make used of cold rolling and proper heat treatment,the internal crystalline structure of gauge material can be altered in way it will compensate the changes of the material due to temperature change.This way the change in Thermal output can be kept very close to zero and standards for high-precision sensors and stress analysis can be met.
… Temp.
Self-compensation
The hypostasis
of Zero Output is the Potential Discrepancy of load cell between
two output
terminals, and
the Potential rest with the two Electric Bridges resistance. The
working Temp. of this
Electric
Bridges resistance change as well as the Zero Output of load
cell, so this change about the
Zero Output of
load cell called Zero Excursion(P).
Why the
Electric Bridges resistance will be change when the Temp. change?
To strain gauge, it is
affected by its
Heat Output. Heat Output is the strain gauge installed on the
unfettered specimen, no
force, when the
environmental Temp. Changes occur as a chance in its resistance.
So the ideal of strain
gauge is the
Heat Output approach Zero. This kind of strain gauge is Temp.
Self-Compensation Strain
Gauge. But it
is opposite speaking to Self-Compensation, this Temp.
Self-Compensation Strain Gauge
also have Heat
Output, just it is less than others.
We always
change the materials of Sensitive Grids and change the Resistance
Temp. Coefficients
by heat
treatment make to make the Heat Output of strain gauge to
approach Zero. We synthesize the
function
relations which among Elastomer linear expansion coefficient,
Foils linear expansion
coefficient,
Resistance Temp. Coefficient and Temperature, with suitable heat
treatment to produce
Self-Compensation strain
gauge which linear expansion coefficient is
9,*1,*6,*3.
Remark: *1 is
suit for alloy steel, Martensite stainless steel,
Precipitation
Hardening
stainless steel etc.. *6 is suit for Austenitic Stainless Steel
etc.. *3 is suit for
Aluminium alloy
etc...
…¡.Creep
Self-compensation
All metal will
bring spring aftereffect, it says when the metal have force in
its spring scope, it
distort and
will not balance with its load at once, but a little later; after
retract the force, it also will not
distort to
original state at once, but a little later, it will become the
same. So this will show by Positive
Creep that the
output signal of load cell increase as the time increase. The
output signal also will
Negative Creep, because the fundus and slice will slack (By
stated stress will decreased by time), and
the value can be adjusted by change the configuration of
Sensitive Grids, the materials of fundus and
produce technics. If the absolute value of Positive Creep is the
same as the Negative Creep, then the
Creep of the load cell can Self-compensate to the best. Our
company produces different Creep grade
strain gauge to satisfy our clients.
….Elastic
Modulus Self-compensation
In elastomer, elastic modulus decrease with the raise of the
ambient Temp., and the output of the
load cell increase with the raise of the Temp. We adjust the heat
treatment of Sensitive Grids to make
the Sensitive coefficient K decrease with the raise of the Temp.,
in order to counteract the increase
which brought by the elastic modulus decrease with the raise of
the Temp. at last to achieve
Self-compensation,this strain gauge is called Elastic Modulus
Self-compensation Strain Gauge. It
synthesize both effects about common strain gauge and
Self-compensation elastic modulus, good
stability, low cost, high sensitivity, easy to produce and work,
it is also suit for load cell which the
precision grade is 0.*5 or mass production and low cost.
País: | China |
N º de Modelo: | AA quarter bridge strain gauge |
Precio FOB: | 0.35 ~ 5 / Piece ( Negotiable ) Obtener el precio más reciente |
Lugar de origen: | China |
Precio de pedido mínimo: | 0.35 per Piece |
Cantidad de pedido mínimo: | 100 Piece |
Detalle de embalaje: | carton |
El tiempo de entrega: | 15 days |
Capacidad de suministro: | 35000 Piece per Month |
Tipo de pago: | T/T, L/C, D/A, D/P, Western Union, Money Gram, PayPal, Other |
Grupo de productos : | strain gauge |