8
IM 701957-01E
3
Connecting the Strain Gauge
The bridge head can support six types of connection methods: single-gauge, single-
gauge three-wire, adjacent-side two-gauge, opposed-side two-gauge, opposed-side two-
gauge three-wire, and four-gauge.
Do not connect the strain gauge terminal to any items with electric potential.
CAUTION
Do not connect the strain gauge terminal to any items with electric potential.
Use the lead wires included with the strain gauge or wires meeting the following
specifications to connect the strain gauge and the bridge head.
• Usable wire: single wire
φ
0.14 to 1.5 mm
2
, or stranded wire 0.14 to 1.5 mm
2
(AWG26
to 16)
• Normal length of bare wire : 6 mm
Note
• Isolate the strain gauge before use.
• Make the wires between the strain gauge and bridge head as short as possible.
• Proper measurements may not be possible in an environment where electromagnetic
interference exists.
• If you are shielding the strain gauge, connect the shield wire to the floating common
terminal of the bridge head.
• For the handling of the strain gauge, see the instruction manual that came with the shield
gauge.
Single-gauge Method
ON
OFF
1
2
3
4
5
6
1 2 3 4 5
(Sense+)
Input- (Shuntcal-)
Bridge- (Sense-)
Input+
1
2
3
4
5
6
9
8
7
Sense+
Bridge-
Sense-
Input+
Input-
Shuntcal-
Shuntcal
ON/OFF
S
Bridge head terminal
Strain gauge
Strain gauge
Shunt
resistor
Switch setting of
the bridge head
Single-gauge Three-wire Method
ON
OFF
1
2
3
4
5
6
1 2 3 4 5
1
2
3
4
5
6
(Sense+)
Input- (Shuntcal-)
Bridge- (Sense-)
Input+
9
8
7
Sense+
Bridge-
Sense-
Input+
Input-
Shuntcal-
S
Shuntcal
ON/OFF
Bridge head terminal
Strain gauge
Strain gauge
Shunt
resistor
Switch setting of
the bridge head
