Teledyne 3000PA - General purpose percent oxygen analyzer User Manual

Page 69

A-9

Percent Oxygen Analyzer

Appendix

Teledyne Analytical Instruments

to toggle between

AUTO and MAN zero settling. Stop when MAN appears,

blinking, on the display.

Zero:

Settling:

Man

To Begin

Press

Enter

to begin the zero calibration. After a few seconds the first

of five zeroing screens appears. The number in the upper left hand corner is
the first-stage zero offset. The microprocessor samples the output at a prede-
termined rate. It calculates the differences between successive samplings and
displays the rate of change as

Slope= a value in parts per million per second

(ppm/s).

#### % Zero

Slope=#### ppm/s

NOTE: It takes several seconds for the true

Slope

value to display. Wait about

10 seconds. Then, wait until

Slope

is sufficiently close to zero before

pressing

Enter to finish zeroing .

Generally, you have a good zero when

Slope is less than 0.05 ppm/s

for about 30 seconds. When

Slope is close enough to zero, press

Enter

. In a

few seconds, the screen will update.

Once span settling completes, the information is stored in the

microprocessor, and the instrument automatically returns to the

Analyze

mode.

NOTE:

The MSDS on this material is available upon request
through the Teledyne Environmental, Health and
Safety Coordinator. Contact at (626) 934-1592