Calibration Overview - Ametek OXYvisor Installation, Operation & Maintenance Manual

Installation, Operation & Maintenance Manual
OXYvisor Optical Oxygen Analyzer

5.12.1 - Calibration Overview

The Calibration sub-menu is used to calibrate the sensor. For highest accuracy and performance validation the
factory recommends a two-point calibration with an appropriate Zero and Span gas. The two-point calibrations
can be performed manually or via AutoCal routine (the latter requires an AutoCal panel with solenoids). The
analyzer also allows for single-point calibrations of either the zero or span gas. This allows flexibility if only one
calibration gas is available or for special case applications. A Factory O
for the case when no gases are available and a sensor has been sent from the factory with calibration data.
Calibration Gas - The Zero Gas should be high quality Nitrogen or any other , non-reactive gas with
zero oxygen content. Depending on the sensor selection, the range and the application, the nitrogen should
be of high purity. The Span Gas should be selected based on the sensor type and the customer requirements.
See Tables X and Y for general factory recommendations.
Sensor
Low Limit of
Type Detection
BOS2 300 ppm
20 ppm
BOS1
BOS3 0.5 ppm
Table 11 - Zero Calibration Gas by Sensor Type
5.12.2 - Calibration - Last Cal Status
Last Cal Status
The Last Cal Status shows the value recorder during the last successful calibration:
Date, Time, Phase Angle, Pressure, Temperature, Amplitude and Stability (during AutoCal).
If a single point calibration is performed, the previous data of the non-calibrated Span or Zero
stays the same.
USEFUL INFORMATION
5.12.3 - Calibration - Factory O
Factory O Sensor Calibration
2
This calibration routine allows for entry of the factory calibration data for the sensor without performing a
field calibration. This is convenient for start-ups or new sensors, however it is always recommended for field
calibration via two-point method with certified test gases for highest accuracy.
Enter the Factory Calibration Information from the Sensor Calibration Sheet.
Once the data is entered Send Factory Cal Data will implement the newly entered information.
Zero Gas Purity
Recommendation
99.99% Nitrogen
99.999% Nitrogen
99.9999% Nitrogen
Sensor Calibration
2
Sensor Calibration is also available
2
Sensor
Zero Gas Purity
Full Range
Type Recommendation
BOS2 0 to 25% O 20.95% O
2
1 to 2% O
BOS1 0 to 5% O
80 - 100% Critical Value
2
BOS3 0 to 300 ppm O 80 - 100% of Critical Value
2
Table 12 - Span Calibration Gas by Sensor Type
Calibration
2
or
2
55