Section 1 - DESCRIPTION
1
1. DESCRIPTION
GENERAL
The DC-LVDT (LVDT) transducer used with Bently Nevada Corporation (BNC)
instruments provides a linear dc output voltage over a specific range of core
movement. This output, connected to the BNC Case Expansion Indicator, is used
to measure the expansion of a machine case as operating conditions vary. The
LVDT is connected mechanically between a reference point on the machine
foundation and a point on the machine that exhibits the measured expansion.
Input power to the LVDT is supplied from the BNC instrument to which it is
connected. Circuitry within the LVDT body converts the machine expansion
measurement (core position) to the required output signal. The BNC instrument
accepts the signal and produces a meter indication of expansion measurement.
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