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RNLXX1 - IntelliPoint RF Series User's Manual
3.2
Re Calibration
CAUTION:
The IntelliPoint RF instrument must be
powered AFTER it is installed in application and with material
BELOW sensing element.
Do NOT push the Recal button without first
ensuring that the material being measured is below
the sensing element.
If the system is powered on the bench prior to installation, or
moved from one tank to another, RECAL is necessary to
allow the software to capture the air capacitance generated by
the sensing element in the tank.
After the Intellipoint is installed and with the with the measured
product press and hold RECAL for 5 seconds (See Figure 2-8).
The Green and Red LED's flash for 60 seconds before reset
occurs. [Remove power from the system while the LED's are
flashing and reset will occur immediately].
The system is now ready for installation.
Nonvolatile Memory
The IntelliPoint has nonvolatile memory which allows the unit
to re-start after power outages without recalibrating.
When the IntelliPoint is powered for the first time the internal
microprocessor records and stores the "Air" value.
This is the uncovered value of the sensor mounted in the vessel.
The IntelliPoint will also store the last covered value and the
last uncovered value.
Whenever the IntelliPoint is powered it uses these values as a
reference point to determine its current condition (normal or
alarm).
The IntelliPoint has nonvolatile memory which retains the
recorded values even if power is lost for months. When
the IntelliPoint regains power after a power outage, the
microprocessor compares the stored values to the current
measured value. It will then determine its current status based
on this.
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