Teledyne TRACE OXYGEN ANALYZER 356WA - Manual (Page 38)

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Appendix Appendix Appendix Appendix Appendix Model 356W Model 356W Model 356W Model 356W Model 356WA A A A A
Teledyne Analytical Instruments
Calibration Data Calibration Data Calibration Data Calibration Data Calibration Data
Range Range Range Range Range
The ranges of this analyzer are:
Range Switch Position No. 1 PPM O
2
Range Switch Position No. 2 PPM O
2
Range Switch Position No. 3 PPM O
2
Output Signal Output Signal Output Signal Output Signal Output Signal
The output signal is D.C.
Background Gas Background Gas Background Gas Background Gas Background Gas
This analyzer is intended to measure oxygen in a background of:
The flowmeter has been set to indicate a flow of 150 cc/min. of this gas.
If any other type of gas is to be analyzed, the flowmeter must be reset for that
gas, using a displacement type flowmeter, when the flow is set to 150 cc/
min.
Cell Class Cell Class Cell Class Cell Class Cell Class:
Electrolyte Type Electrolyte Type Electrolyte Type Electrolyte Type Electrolyte Type
Type A: 10% potassium hydroxide in distilled water
Type B: 10% potassium carbonate in distilled water
Type C: 20% potassium bicarbonate in distilled water
Calibration Considerations Calibration Considerations Calibration Considerations Calibration Considerations Calibration Considerations
In order to calibrate the Model 356, all that is required is to center the
float of the flow tube in the target, add a known quantity of oxygen (0–100
PPM) via a calibrated span gas and adjust the span potentiometer to match
the known oxygen concentration of the span gas. It should not be necessary
to compensate for changes in altitude or ambient temperature.
The flow tube is a mass flow device and therefore automatically com-
pensates for altitude changes should the instrument be moved to a higher
elevation (in this instance a higher span setting will be required since the
sensing element is sensitive to the partial pressure of oxygen).
The ambient temperature does not affect the flow rate through the
analyzer since the flow tube is located in the same temperature controlled
compartment as the cell assembly.