Appendix

Model 356WA

 

 

 

 

Calibration Data

Range

The ranges of this analyzer are:

Range Switch Position No. 1

 

 

 

PPM O2

 

 

Range Switch Position No. 2

 

 

 

PPM O2

 

 

Range Switch Position No. 3

 

 

 

PPM O2

 

 

 

Output Signal

 

 

 

 

The output signal is

 

D.C.

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:

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

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.

A-4

Teledyne Analytical Instruments

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Teledyne 356WA instruction manual Calibration Data, Calibration Considerations