wavetek calibrator switches  (Wavetek Inc)

Journal: Sensors (Basel, Switzerland)

Article Title: Applying Monte Carlo Method for Straight-Line Model Sensor Calibration

doi: 10.3390/s26092907

Figure Lengend Snippet: Measurement setup for the calibration of a LEM LV 25-P-based voltage sensor-box. The Wavetek 9100 calibrator supplies the input voltage at 60 Hz with voltages up to 300 V. The Agilent 34410A multimeter measures the sensor-box input voltage ( V 1 ) and an Agilent 3458A multimeter measures the sensor-box output voltage ( V 2 ). All instruments are controlled by IEEE 488.2 to set the input voltage and measure the input and output voltages.

Article Snippet: The last noteworthy aspect of these results is that the lowest slope uncertainty is not obtained using the two most extreme measured pairs of values but instead using V 1 = 4 V and V 1 = 104.975 V —which is immediately before the Wavetek calibrator switches from the 105 V to the 320 V range.

Techniques:

Journal: Sensors (Basel, Switzerland)

Article Title: Applying Monte Carlo Method for Straight-Line Model Sensor Calibration

doi: 10.3390/s26092907

Figure Lengend Snippet: Example of the proposed MCM-based calibration method using only four of the measured values in the 125 V to 126 V sensor-box input range. The crosses represent the measured input/output values, and for each of the four values, 200 realizations of the MCM are shown. Also shown are three examples of the resulting regression straight-lines. The sensor-box input values/uncertainties used correspond to the Wavetek 9100 calibrator. The histograms obtained with 10 7 realizations of the MCM sensor input and output are shown near both axes.

Article Snippet: The last noteworthy aspect of these results is that the lowest slope uncertainty is not obtained using the two most extreme measured pairs of values but instead using V 1 = 4 V and V 1 = 104.975 V —which is immediately before the Wavetek calibrator switches from the 105 V to the 320 V range.

Techniques:

Journal: Sensors (Basel, Switzerland)

Article Title: Applying Monte Carlo Method for Straight-Line Model Sensor Calibration

doi: 10.3390/s26092907

Figure Lengend Snippet: MCM relative uncertainty of the calibration slope m as a function of the number of measurement pairs used in the calibration. The results in blue were obtained using the x i values and corresponding uncertainties from the Wavetek 9100 calibrator. The results in red use the measurements and uncertainties from the Agilent 34410A, which is measuring the sensor-box input. The measurements always include the first and last sensor-box pairs of values and are equally spaced within this range.

Article Snippet: The last noteworthy aspect of these results is that the lowest slope uncertainty is not obtained using the two most extreme measured pairs of values but instead using V 1 = 4 V and V 1 = 104.975 V —which is immediately before the Wavetek calibrator switches from the 105 V to the 320 V range.

Techniques:

Journal: Sensors (Basel, Switzerland)

Article Title: Applying Monte Carlo Method for Straight-Line Model Sensor Calibration

doi: 10.3390/s26092907

Figure Lengend Snippet: Average value of the calibration slope m and corresponding interval estimated to have a 95 % level of confidence (shown as error bars) as a function of the number of measurement pairs, N , used in the MCM. These results were obtained using always the first and last sensor-box input values, with equally spaced measurements and using the calibrator measurements/uncertainties. The dashed line is the average value when N = 10 4 measurement pairs are used for the regression.

Article Snippet: The last noteworthy aspect of these results is that the lowest slope uncertainty is not obtained using the two most extreme measured pairs of values but instead using V 1 = 4 V and V 1 = 104.975 V —which is immediately before the Wavetek calibrator switches from the 105 V to the 320 V range.

Techniques: