Kaman digiVIT - Manual (Page 8)

www.kamansensors.com PART NO: 860525-001
Last Revised 9/16/2013
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4.1 Volt Out Setup
This option allows selection of the voltage output range from the system.
The actual voltage will go 1% above or below the voltage output range selected if the sensor is
above or below the calibrated range.
4.2 mA Out Setup
This option allows selection of the current output range from the system.
The actual current will go 5% above or below the current output range selected if the sensor is
above or below the calibrated range. In the case of 0-20mA output, it will not go below zero.
4.3 Cal Setup
This selection allows linearization calibration and temperature compensation. With the
exception of the 2 Pt. or 3 Pt. Adjust (reference 4.8) all other calibration methods will zero out
the temperature compensation coefficients and any offset.
4.4 Linearization Options
3 options are available for linearization calibration, 2 point, 6 point and 21 point.
Note: Performing a linearization calibration after a temperature compensation calibration will
void the temperature compensation calibration. All linearization calibrations begin by locating
the sensor at the maximum distance it will be from the target during operation. This is typically
the sum of the offset distance and full scale range.
4.4.1 2 Pt. Cal
The 2 point calibration is useful if either linearity of the output is not a concern or if the sensor is
operated over a very short range. Ranges less than 10% of the standard range (a standard
range is normally 33% of the sensor diameter) typically will result in good linearity. For ranges
below 5% of the standard range; this is the recommended method.
To perform a 2 Pt calibration, the sensor needs to be position at MAX distance from the sensor
face (i.e. full scale) so that it can optimize for a given sensor. After that, the sensor needs to be
positioned at only the offset (MIN) and full range (MAX) positions.
Note: Any previous temperature compensation calibration will be voided when a 2 Pt. calibration
is performed.