Page 284 - Mechanical Engineer's Data Handbook

272 MECHANICAL ENGINEER’S DATA HANDBOOK

Tension or compression (one active gauge, one Bending vour active gauges: two in tension, two
dummy gauge) in compression)

V P=2F8eV; I,=- V
Galvanometer voltage P= F e-
82 24
V
Gauge current I, = -
24

Tension or compression (two active gauges and
two dummy gauges in series)
Bending (two active gauges: one in tension, one
in compression) This arrangement eliminates the effect of bending

- V
V=F,e V; lg=-
2%

5
, (tension)
m rn
Dummy gauges