Weighing Sensor

The material of weighting sensor is as below: strain gauge material, elastomer material, patch adhesive material, sealant, sealing material lead and lead materials.
The base material of commonly used strain gauge is polymer thin film materials, generally the strain material is high purity constantan.
The strain gauge is bonded at the elastomer material, deformation of the elastomer will be the shape change of strain gauge, they will come to restore when the external force disappear. Normally the strain gauge is kinds of metal, such as the aluminum alloy, stainless steel and alloy steel.

Patch adhesive material
Patch adhesive material bonds the strain gauge and elastomer material together very well, it could ensure their deformation to be the same always, the adhesive material should be the two component epoxy adhesive series.

Adhesive material
The early weighting sensor is sealed by sealant, then as the developing of manufacturing technology, the stability and operating span is largely enhanced by welding technique.
In 21st century, though many adopting welding technique, these important parts need to use the sealant still. With the good stability, moisture-proof, anticorrosion and insulation performance, silicone sealant becomes the good alternative.

Four models recommended for the application:

Model	Industry	Material	Classify	Curing method	Property/Usage
SE2211	Electric	Epoxy	Two component	RTV	Patch adhesive
SP2018	Electric	Polyurethane	Two component	Room-temp cured	Low viscosity, potting
SI2715	Electric	Silicone	Two component	Room-temp cured	Gel, potting
SP2586	Electric	Polyurethane	Two component	Room-temp cured	Low viscosity, potting

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Weighing Sensor

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