Ectron 451, Instruction Manual

Page: 9 / 74

Section I
Description
GENERAL
The Model 451 LVDT signal-con-
ditioner produces an analog volt-
a g e t h a t r e p r e s e n t s t h e
displacement of the shaft of an
LVDT (linear variable displace-
ment transformer). This voltage
and the displacement, in either
milli-inches, millimeters, or de-
grees, are displayed on a backlit
front-panel display. There are three
independent modes of operation
making it the most versatile LVDT-
signal conditioner produced today.
MODES OF OPERATION
The Model 451 is always in one
of three modes of operation:
GAIN
,
EXAMPLE
, or
SCALE
.
To activate an inactive mode, the
user simply dials the the knob until
the desired mode is displayed and
answers
YES
to a screen prompt.
The unit then guides the user
through the setup for that particular
mode.
In the
GAIN
mode, the desired
gain of the Model 451 and the
transducer sensitivity are entered,
and it is ready for use.
In the
EXAMPLE
mode, the user places the shaft of the LVDT at a position and “ captures”
that point and assigns a voltage to it. This is done a second time for another position, and
after the transducer sensitivity is entered, the unit is ready for use.
In the
SCALE
mode, the user keys in two desired displacement points and corresponding
voltage points, and like the other two modes, after the transducer sensitivity is entered, the
unit is ready to use.
OTHER FEATURES
In addition to the mode of operation, the Model 451 offers complete control over a wide
variety of functions to truly make it unique.
Zero
Two means of controlling zero are provided: manual
and autozero. In manual zero, the user can dial in the
Model 451
LVDT Signal Conditioner
1-1