Depending on the thin film that is used, foil strain gauges (SG) are implemented which achieve a gauge factor of up to 30. Depending on the corresponding requirements, specific thin films can be quoted or developed to satisfy the needs of the particular application. Besides the gauge factor, the focus lies on stability, temperature-sensitivity and, of course, reproducibility.
The possible characteristics at a glance:
Our technical department will be glad to answer any of your questions. CeLaGo Sensors provides you SG for testing in your application field.
Depending on the requirements, a large diversity of SG is
|1 - X||-||SA||-||MA||-||XX||-||GG.GG||-||RR.RR||_||X|
thin film material/
|measuring grid arrangement||type||grid length||resistance||supplement (optional)|
The possible film characteristics at a glance:
|Code (S)||Thin film material||Properties*||Possible applications|
industrial transducer, weighing, etc.
||industrial transducer, etc.|
||dynamic measurements, short-term use|
*the gauge factor can variate up to 1 dependent on design and compensation
By compensating the apparent strain due to the thermal expansion of the transducer, the temperature sensitivity of the single resistor can already be decisively suppressed. Adjustments to the following coefficients of expansion of the transducer material are available:
**Due to the production the adjustment accurancy is 3 ppm/K.
In addition to a number of standardized layouts, customer-specific designs can also be supplied. The classification of the measuring grid arrangements is according to the table:
Type of strain gage
||Overview of the types***|
|See the overview of linear pattern|
|See the overview of shear pattern|
|TR||T-rosette||See the overview of T-rosette|
|VB||full bridge||only customized|
|MR||membrane rosette||only customized|
***Available as standard
|02.80||2.8 mm||50.00||50k ohms|
|R||right alignment (shear SG)|
|L||left alignment (shear SG)|
|RL||double-SG with right and left alignment (shear SG)|