Teledyne OT-3 Using the Function and Data Entry Buttons, Setting the Analysis Ranges

Operation OT-3

4.2Using the Function and Data Entry Buttons

When no buttons on the Analyzer are being pressed, the instrument is in the Analyze mode. It is monitoring the amount of oxygen in the sample gas that is flowing through the sampling system.

When one of the Function Buttons is being pressed, the Analyzer is in the Setup mode or the Calibration mode.

The 4 Setup function buttons on the analyzer are:

∙

∙

∙

∙

SET ALARM 1

SET ALARM 2

SET HI RANGE

SET LO RANGE

The Calibration mode button is:

∙SET SPAN

The Data Entry buttons (D and Ñ) increment the values displayed on the TRACE OXYGEN meter while one of the Function buttons is being held down.

D: UP arrow—increments the displayed value upwards.

Ñ: DOWN arrow—increments the displayed value downwards.

Any of the functions can be selected at any time by holding down the appropriate button.

Each function will be described in the following sections. Although the operator can use any function at any time, the order chosen in this manual is appropriate for an initial setup.

4.3Setting the Analysis Ranges

The two user definable analysis ranges are both capable of being adjusted for from 0-10ppm to 0-9999 ppm oxygen concentration. Whatever values are selected, the analyzer automatically switches from the LO range to the HI range when the oxygen concentration reaches the LO range full-scale value, and it switches back to the LO range when the oxygen concentration falls below of the LO range full-scale value

Note: The HI Range setpoint MUST be set at a higher concentration percentage than the LO Range setpoint.

Teledyne Analytical Instruments 24