• Integral type
• Heat-shrinkable tubing
• Connecting terminals joint type (CT)
• Insulation film type (TA)
• Direct type
• Single element strain gauge with different leadwire

 

Integral type

A vinyl leadwire is jointed to the polyimide sheathed gauge leads of a strain gauge. The solder joints are covered with the vinyl sheath of the leadwire. This is our standard method of integral leadwire attachment.

Leadwire
Constrution			Dimension (mm)
			a	b
2-wire paralleled	LJB/LJB-F	7/0.12	1.1	2.2
	LJC/LJC-F	10/0.12	1.4	2.8
2-wire twisted	LH	5/0.07	0.4	-
3-wire paralleled	LJBT/LJBT-F	7/0.12	1.1	3.3
	LJCT/LJCT-F	10/0.12	1.4	4.2

Heat-shrinkable tubing

The soldered joint between the gauge leads and the leadwire is protected with a heat shrinkable tube. The heat shrinkable tubes are available in three temperature ratings of 80℃, 200℃ and 260℃.

Leadwire					Heat-shrinkable tube
Constrution			Dimension (mm)		Dimension (mm)
			a	b	L	H	W
2-wire paralleled	LJD	12/0.18	1.9	3.8	11	3	6
3-wire paralleled	LJDT	12/0.18	1.9	5.7	11	3	7
3-wire twisted	LHT	5/0.07	0.4	-	5	0.8	1.6
Cross-linked vinyl 2-wire twisted	LJRA	7/0.16	0.9	-	11	2	4
Cross-linked vinyl 3-wire twisted	LJRTA	7/0.127	1.1	-	11	2	4
Cross-linked polyethylene 3-wire twisted	LJQTA	7/0.127	0.8	-	11	2	4
3-wire twisted	LTSA	7/0.12	Φ3.0		10	2	4
	LTSB	7/0.26	Φ5.0		12.5	3	6
FEP (Fluorinatedethylene-propylene) 3-wire twisted	6FB_LT	1/0.2	Φ1.1		11	2	2
	6FAS_LT	7/0.18	Φ2.0		11	3	4
PTFE (Polytetrafl uoroethylene) 3-wire twisted	4FB_LT	1/0.2	Φ1.1		11	2	2
	4FA_LT	7/0.16	Φ1.9		11	2.5	4

Connecting terminals joint type

The gauge leads and the leadwire are jointed using a foil shape connecting terminal. Measurement in high temperature is possible by using a high temperature solder with melting point of 300℃ or more for the joint.

Leadwire
Constrution			Dimension (mm)
PTFE(Polytetrafluoroethylene) 3-wire twisted	4FB_LT	1/0.2	Φ1.1

Insulation film type

The soldered joint between the gauge leads and the leadwire is covered with an insulation film of glass cloth base. The film is resistive to heat up to 300℃, so this method is suited to measurement in high temperature.

Leadwire				Film
Constrution			Dimension (mm)	Dimension (mm)
				L	H	W
PTFE (Polytetra-fluoroethylene) 3-wire twisted	4FA_LT	7/0.16	Φ1.9	13	1.5	4

Direct type

A vinyl leadwire is jointed directly to the gauge leads, which are made of nickel plated copper. The solder joints are covered with the vinyl sheath of the leadwire up to the end of the gauge base.

Leadwire
Constrution			Dimension (mm)
Vinyhl leadwire 2-wire twisted	LDA	7/0.12	Φ1.6

Single element strain gauge with different leadwire

Lead wires of different types can be combined for one strain gauge, such as a combination of heat-resistant wire and vinyl lead wire, or superfine lead wire and vinyl lead wire. It enables the use of heat-resistant wire or superfine wire in the vicinity of the strain gauge.