KM Embedded Strain Gages

These strain gages are for measuring internal stress in materials such as mortar and concrete. They are used embedded in measuring objects. They feature special surface treatment to improve adhesion with materials such as mortar, and have been designed with various factors such as waterproofing and elastic coefficients taken into consideration.

Description

Major Properties

Materials Resistive element	CuNi alloy
Materials Base	Acrylate
Operating temperature in combination with major adhesives after curing (°C)	(Embedment) -10 to 70ºC
Operating temperature in combination with major leadwire cables (°C)	Vinyl-coated flat cable: -10 to 70ºC
Self-temperature-compensation (°C)	0 to 50ºC
Applicable linear expansion coefficients (×10-6/℃)	11
Strain limits at normal temp. (approx. %)	0.2
Fatigue lives at normal temp. (times)	–

Types, lengths and codes of lead-wire cables pre-attached to KM

Model	KM-30 Vinyl-coated flat 2-wire cable	KM-120 Vinyl-coated flat 3-wire cable
Gage Pattern	H1	H2
1 m	Y1M2	W1M3
3 m	Y3M2	W3M3
5 m	Y5M2	W5M3
Operating Temperature	-10 to 70°C

*For other lead-wire cable lengths, contact us.

How to order

When ordering, suffix the lead-wire cable code to the model number with a space in between.

E.g.
For the gage with a vinyl-coated ﬂat 3-wire cable 5 m long
→ KM-120-120-H2-11 W5M3