Z
Zero Adjustments: Used when 'setting up' a transducer
to adjust the output signal to zero when zero load/pressure
is applied.
Zero Balance: The output signal of the transducer
with rated excitation and with no-load applied, usually
expressed as a percent of rated output.
Zero Offset: 1. The difference expressed in
degrees between true zero and an indication given by
a measuring instrument. 2. See Zero Suppression
Zero Point: The electrical zero point where
zero millivolts would be displayed. Used in conjunction
with the slope control to provide a narrower range calibration.
Zero Power Resistance: The resistance of a thermistor
or RTD element with no power being dissipated.
Zero Return: The difference in zero balance
measured immediately before rated load application of
specified duration and measured after removal of the
load, and when the output has stabilized.
Zero Suppression: The span of an indicator or
chart recorder may be offset from zero (zero suppressed)
such that neither limit of the span will be zero. For
example, a temperature recorder which records a 100°
span from 400° to 500° is said to have 400°
zero suppression.
Zero Voltage Switching: The making or breaking
of circuit timed such that the transition occurs when
the voltage wave form crosses zero voltage; typically
only found in solid state switching devices.
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