Laurel Electronics LAUREATE SERIES SCALE-WEIGHT METER User Manual
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voltage or current at either point does not need to be known. The decimal point
is set by the separate dEC.Pt menu item.
Setpoint
A value compared to the reading to determine the state of a relay. Term often
used interchangeably with “alarm setpoint.” The relay action can by latching or
non-latching, utilize a hysteresis band, or utilize a deviation band. Hysteresis
bands and deviation bands are specified by two symmetrical limits around the
setpoint.
Span
The number of counts corresponding to a given signal range.
Tare
A rear panel input which causes the display to be set to zero when the input is
momentarily tied to logic ground by a switch or is held at 0V (logic level true) for
a minimum of 50 ms. When the input is allowed to float or is held at +5V (logic
level false), the meter displays readings relative to this new zero. A common
application is in weighing, where an external Tare button is pressed to read the
weight of an empty scale (tare), and tare is then automatically subtracted as a
constant from gross weight for display of net weight. Tare can also be used for
other applications where a reading relative to starting point is desired.
Zero
When used with process meters, zero is an adjustment so that a given low
transducer output reads zero on the meter. Zero is adjusted by programming
offset.
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