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RMTXX1 Series - IntelliPoint RF™ Instruction Manual
3.3.4 Recalibration (Continued)
3.3.5 Calibration of Adjustable Differential Units (HLFS and LLFS)
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.
1. Put Fail-Safe switch in HLFS position.
See Section 2.5.3.
2. Turn SetPoint adjustor to full counter clockwise position.
3. Turn Differential adjustor to full counter clockwise
position as well.
4. Adjust material level to lower point of desired control
band.
5. Slowly turn SetPoint adjustor clockwise until instrument
just operates (Red LED changes state).
6. Turn Differential adjustor to full clockwise position
(maximum differential).
7. Raise material level to upper point of desired control
band.
8. Slowly turn the Differential adjustor counter-clockwise
until the Red LED changes state.
9. Select desired Fail-Safe position.
Calibration is Complete
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