Texmate, Inc. Tel. (760) 598-9899 • www.texmate.com
FL-B101Q-DCA _ FL-B01Q-DCV (d0084)
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Meters with QuICkSET PROgRAMMINg feature a unique, easy-to-use, two point scaling and calibration system.
Scaling or calibration is accomplished simply, by applying a zero or low input signal and adjusting the bar to the desired
reading, using the ZERO button. A higher input signal is then applied, and the bar is adjusted to the desired reading for
that input value, using the SPAN button.
IMPORTANT DETAILS THAT MAkE QuICkSET PROgRAMMINg EASY TO uSE AND uNDERSTAND
1. The zero and span buttons are functionally the same, except as follows: The ZERO button can initiate a scaling with
input signals from zero to 95% of fullscale.The Span button can initiate a scaling with input signals from 5% of fullscale
to 105% of fullscale.
2. When a Zero or Span button is pressed, the Up or Down indicator LED will immediately light up to show the direction,
in which the Bar will move, after a 0.5 second delay. If the button is released and pressed again, the opposite Up
or
D
own indicator will light up, and 0.5 seconds later the Bar will begin to move in that direction until the button is
released. When the bar is being adjusted to zero or fullscale, the bar will automatically stop at the zero or fullscale
position, and will not overshoot these positions, even if the button continues to be pressed.
3. While the bar is being adjusted, a new offset and scale factor is continuously being calculated. At the moment the
button is released, and the scaling is accepted, the calculation data is memorized and implemented. The Scaling cal
-
culation is based on the new position of the Bar, the input signal being applied at that moment, and the previously
memorized position of the Bar and the input signal that was being applied, when the other button was last released.
4. Positive and negative signals maybe integrated into a two point scaling. However when either a ZERO or SPAN but
-
ton is pressed the input signal being applied, must be more than 5% higher or lower than the previously memorized
value of the input signal, that was being applied when the other button was last released. If not, the bar will flash, the
scaling will not be accepted, and the previous scaling will still be retained in memory.
5. Because of the requirement, that a new scaling input signal must be 5% higher or lower than the previously stored
value, it can sometimes be difficult to implement a desired scaling, particularly when using a calibrator that only has
fixed output values. In this case Reset the Scaling by pressing the ZERO and SPAN buttons simultaneously for two
seconds. Both scaling memories will be erased and an internal default scale factor will be loaded. This provides a
display of zero to fullscale on the bar for an input of approximately 0 to 100% of the range selected on the input signal
conditioning module. After Resetting the Scaling a new calibration, using either button, can be implemented with new
input signal values. It is good practice to always use the
z
ero button for lower input signals and the Span button for
higher input signals, even when the bar display scale is inversed.
6. The larger the difference between two points used for calibration, the better the accuracy. However if the difference is
too high, and the output from the input signal conditioning module is greater than +2.1VDC, or less than -1.05VDC,
the bar will flash over range. The calibration will not then be accepted and, the previous scaling will still be retained
in memory. In this case, either a lower input signal must be used, or a higher range on the input module should be
selected to recalibrate the meter.
Note: Most input signal conditioners have provisions for analog calibration and scaling. If the meter’s scale factor is
set to read zero with a zero input (shorted input), and to read 10 Bars fullscale with a 2.000 V input, any pre-calibrated
signal conditioner with an output that does not exceed – 1 V to + 2 V, will read correctly in the meter without any further
calibration.
Two Point Quickset Scaling and Calibration
