Instron 2620-600 Series, Справочное руководство

Страница: 12 / 42

Chapter: Introduction
1-2 M26-16655-EN
to +200ºC (-100ºF to +400ºF). They are
immersible in a wide variety of non-
conductive / non-corrosive cooling or heating
fluids.
The flexural element is a special alloy
operating beam with fatigue-certified foil
gauges bonded to it and arranged in a fully
active four-arm Wheatstone Bridge circuit. It
is mounted in a light rigid frame and follows
accurately the strain amplitudes applied to it.
Positive mechanical stops limit overtravel
and an aluminium case protects the gauges
and the associated wiring from mechanical
damage.
A full kit of accessories is packed in a
protective box together with the
extensometer and includes all parts and
special tools necessary for use.
Apart from their use under closed-loop strain
control on all Instron servohydraulic testing
instruments, the extensometers are suitable
for direct measurement and readout of strain
on most Instron static testing instruments.
However only the Model 1121 table model
and the Model 1190 floor model instruments
can be fitted with the Instron Load/Strain
control necessary to permit strain-controlled
testing to be achieved.