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Strain gauges

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Strain gauge - 1/8", 2 000 mbar | ASG2 series

The Edwards Active Strain Gauge (ASG2) provides precision measurement values between 2000 mbar to 1 mbar and also 1000 mbar to 1 mbar indepedent of gas. The product comprises of a rugged, corrosion proof diaphragm which uses a stand free transducer to allow OEMs. It also aids in the development of system builders for lower costs and high er flexibility in needs of vacuum instrumentation. Besides, it can also be linked to the TIC controller in order to work with various sensor types; this provides an absolute solution for vacuum instrumentation.

Note: ASG Adaptor cable is provided individually. Cable is recommended to be used with TIC, AGC, ADC and ADD. For accurate atmospheric measurements RoHS66 is a commendable choice specifically for load locks. Also used as a detachable transducer to allow effective and cheap operations for OEMs and system builders.

Strain gauge - type AA & FB

To choose true SG strain gauges, it is recommended to refer to the Strain Gauge Ordering Code regulations to have a clear conception about the ordering code of BCM strain gauges. In the gauge classification for class-A, all the SG are customized for detector or transducer operations, so they are concealed gauges by the cover layer to avoid moisture effecting the gauges. The ECF-version SG are suggested for accurate transducer utilization. In case, the electric resistance is not adequate for the available ECF version, the Karma gauges of EKF version can be replaced for accurate transducers. But the EKF-version of gauges has to be furnished nearly with tinned sold-dot, otherwise it is tough to weld the electric linking leads on to the karma gauges. All the BCM class-A strain gauges have both satisfying temperatures for zero drift (STC) and creep for detector bodies creep (creep code).

Shear strain gauge - type AB & AC

All the BCM class-A strain gauges are both temperature compensated for zero drift (STC) and creep-compensated to sensor body’s creep (creep code) Nevertheless, some particular EKF-series karma gauges possess the creep-compensation and temperature-compensation...

Shear strain gauge - type AB & AC

Biaxial strain gauge - type BB-A & BB-B

Dual-grid biaxial strain gauge - type HA-A & HA-B

All the BCM class-A strain gauges are both temperature compensated for zero drift (STC) and creep-compensated to sensor body’s creep (creep code) Nevertheless, some EKF-series karma gauges possess the creep-compensation and temperature-compensation...

Dual-grid biaxial strain gauge - type HA-A & HA-B

Half-bridge strain gauge - type GB

Encapsulated strain gauge - TSM

The suitability of a strain gauge pattern for a specific application will be dependent on the gauge resistance and type of stress analysis required. Gauge resistances are typically 120ohms, 350ohms and 1000ohms. Higher resistance gauges can use higher bridge voltages, generate higher output signals and reduce heat generation rates and lead wire effects. Single grid gauges are used in circumstances where uni-axial stress states exist and the principle axes are known. Two element grids are used in a bi-axial stress state where the principle axes are known, and three element grids are used in a bi-axial stress state where the principle axes are unknown. Gauge length is the length of the gauge grid that is sensitive to strain and which measures the average strain over the area of the grid. If an average value is required then a long strain gauge should be utilized. For homogeneous materials, the length of the gauge is determined by the available space, ease of handling and application.

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Strain gauges

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Strain gauge - 1/8", 2 000 mbar | ASG2 series