Servometer PMG LLC, a manufacturer of precision engineering components, has introduced a new temperature-sensitive bellows assembly. These lightweight assemblies are thin-walled, electro-deposited nickel bellows that are soldered to custom end pieces filled with a working fluid (with a known coefficient of thermal expansion) and then sealed.
By sealing a specific volume of fluid within the bellows, the volumetric thermal expansion characteristic of the fluid is transformed into a precise, measurable linear movement, the company says. This movement, used as an actuator or calibrated to be read as control data, is completely reversible due to the extremely low hysteresis of the bellows material. The response of the bellows ensures that the targeting image is not distorted by environmental changes in temperature, from sub-zero to extreme desert-heat conditions.
These athermalization bellows assemblies can be designed, manufactured and assembled to customers' specifications.
Servometer: (973) 785-4630