LAUREL LAUREATE LW20201SG1, Owner'S Manual

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low input value, and the desired low reading is entered. A known high signal is
then applied, such the output of a transducer for a know weight or pressure.
That signal is captured as the high input value, and the desired high reading is
entered. The meter then applies straight line fit. This scaling method has the
advantage of calibrating the transducer and meter as a system. The actual
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 .