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Operation 3000TA- EU
Teledyne Analytical Instruments 48
Use the ▲/▼ keys to toggle between AUTO and MAN span
settling. Stop when MAN appears, blinking, on the display. Press Enter
to move to the next screen.
Press Enter to move to the next screen.
Calib. Holding time
Cal hold: 5 min
This menu allows the operator to set the time the analyzer should
be held in the auto span mode. It does not affect anything in Manual
Mode. Just press Enter to continue.
Span Val: 000008.00
<ENT>Span <UP>Mod #
Press ▲ (<UP>) to permit modification (Mod #) of span value.
Use the arrow keys to enter the oxygen concentration of the span
gas you are using (209000.00 if you are using air). The ◄►arrows
choose the digit, and the ▲/▼ arrows choose the value of the digit.
Press Enter to enter the span value into the system and begin the
span calibration.
Once the span has begun, the microprocessor samples the output at
a predetermined rate. It calculates the difference between successive
samplings and displays this difference as Slope on the screen. It takes
several seconds for the first Slope value to display. Slope indicates rate
of change of the Span reading. It is a sensitive indicator of stability.
#### % Span
Slope=#### ppm/s
When the Span value displayed on the screen is sufficiently stable,
press Enter. (Generally, when the Span reading changes by 1% or less
of the full scale of the range being calibrated for a period of ten minutes
it is sufficiently stable.) Once Enter is pressed, the Span reading
changes to the correct value. The instrument then automatically enters
the Analyze function.