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Opposing two-gauge method, Opposing two-gauge three-wire method – Yokogawa PC-Based MX100 User Manual

Page 59

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2-14

IM MX100-01E

Opposing Two-Gauge Method

ON

OFF

No.1

No.2

No.3

No.4

No.5

A(+V)

B( L)

C(-V)

D( H)

No.1

ON

No.2

OFF

No.3

ON

No.4

OFF

No.5

ON

Rg1

Rg2

R

R

Rg2

Rg1

E

e

Rg1

Rg2

Setting switch

-B12, -B35

R: fixed resistance

r: resistance value of lead wire

Rg: resistance value of strain

gauge

e: output voltage from bridge

E: voltage applied to bridge

-NDI

Setting switch

Rg1

Rg2

ON

1 2 3 4 5

1

2

3

4

5

6

7

8

OFF
SW

Bridge head

(701955 or 701956)

SW1

ON

SW2

OFF

SW3

ON

SW4

ON

SW5

OFF

Opposing Two-Gauge Three-Wire Method

R

R

Rg2

Rg1

E

e

Rg1

Rg2

Cannot be connected. Use -NDI.

r

r

r

r

r

r

-B12, -B35

R: fixed resistance

r: resistance value of lead wire

Rg: resistance value of strain gauge

e: output voltage from bridge

E: voltage applied to bridge

-NDI

Setting switch

Rg1

ON

1 2 3 4 5

1

2

3

4

5

6

7

8

OFF
SW

Bridge head

(701955 or 701956)

SW1

OFF

SW2

OFF

SW3

OFF

SW4

ON

SW5

OFF

Rg2

2.4 Connecting the Signal Wires