Intek 200 - Manual (Page 18)

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A message of ‘Flow Not Valid’ during calibration means either there is no flow, or flow is out
of the measurable range of the unit.
!! !! CAUTION: Although the calibration adjustments can be made at any
flow value it is recommended that the low and high flows be at least 10%
apart from each other. If the desired accuracy is not met with this
technique, a factory assisted recalibration may be required.
A separate feature of the SmartSpan is the ability to disable and re-enable the calibration adjustment
function. This is done by setting both the top and bottom display lines to the ‘DATE’ field, then
simultaneously pressing the TOP LINE SCROLL and BOTTOM LINE SCROLL buttons. The
message ‘Flow Calibration Disabled’ will be displayed when disabling, and ‘Flow Calibration
Enabled’ when re-enabling.
Restoring the factory calibration settings can be accomplished by setting both the top and bottom
display lines to the ‘Software Version’ field, then simultaneously pressing the TOP LINE SCROLL
and BOTTOM LINE SCROLL buttons. The message ‘Factory Calibration Restored’ will be
displayed when this is performed.
4. SELECTING DIFFERENT CALIBRATIONS
Use this feature to select one of four (A, B, C, or D) different calibrations. This can be done by
setting both the top and bottom display lines to the ‘S/N, Cal Selection,’ then simultaneously
pressing the TOP LINE SCROLL and the BOTTOM LINE SCROLL buttons. Each time the two
keys are pressed simultaneously the cal field will advance to the next calibration (A, B, C or D).
Check your model number and if it contains a “-SW-” suffix, you have ordered a special multi-
calibration option. This means that two or more calibrations have been custom configured at the
factory. In this case refer to the Special Instructions Section for more information.
In general, a unit with a single calibration (which is the standard), will be shipped from the factory
with the B, C and D calibrations as duplicates of the original ‘A’ calibration. This allows you to
custom calibrate up to three additional different calibration settings while preserving the original
factory calibration.
3.5 OUTPUT CURVE
Figure A-1 is the final linearized flow output curve for your unit. The instrument has been calibrated
over the actual flow rate range indicated on the ordinate (Y axis).