Model 3060e – Teledyne 3060e - Ultra Trace oxygen analyzer User Manual

Page 80

4-32

Model 3060E

Chapter 4

Teledyne Electronic Technologies

Analytical Instruments

10.

If you press

AUTO

, go to step 14. If you

press

MAN

, the screen displays the

oxygen concentration, and directs you
to press

ACK

when the oxygen level

stabilizes.

It may take up to 30 minutes for the oxygen level to reach a stable value. With
internal calibration, the noise level will be close to 1–2% of full scale. However,
if too much electrolyte is added, or the calibrator electrodes are covered with
electrolyte, the noise level may be higher and/or the signal may show some
spiking. The amplitude of the spikes is more pronounced at concentrations
above 1 PPM. If this occurs, stay in the Calibration mode. The electrolyte level
in the calibrator will slowly decrease, and the noise level will decrease
accordingly. Do not open the calibrator and attempt to remove excess electro-
lyte from the calibrator. If the amplitude of the spikes does not decrease, press
ACK at the base line of the calibration curve to minimize error in calibration.
See Figure 4-7.

It is recommended that you do not generate more than 6 ppm oxygen from the
internal calibrator for calibration. When monitoring PPB levels of oxygen, the
analyzer should be spanned around 500 PPB to achieve optimum performance.

11. After the output has stabilized, You can

press

ACK

to adjust the analyzer span.

When you press

ACK

, the screen indi-

cates that calibration is in progress and
displays the message:

PLEASE

WAIT

...

12. After the calibration process is complet-

ed, the screen displays the present
oxygen content. Press

ACK

to enter the

Analyze mode.

13. When you press

ACK

, the system auto-

matically shuts down the calibrator, and
the screen displays the time remaining
before the analyzer returns to the
Analyze mode main menu.

VALVES: CALIBRATO R SPAN
O XYG EN = 5.0 PPM O 2
FLO W = 150.0 CC/M IN
W HEN THE O2 READING STABILIZES
PRESS ACK FO R SPAN LEVEL
ADJUSTM ENT

ACK

ESC

VALVES: CALIBRATOR SPAN

T=25C

CALIBRATION IN PROGRESS
PLEASE WAIT . . .

VALVES: CALIBRATOR SPAN

- - PRESS ACK WHEN READY - -

OXYGEN = 5.0 PPM O2
PRESS ACK TO TURN OFF THE
CALIBRATOR AND START THE
ANALYZE MODE

ACK

VALVES: CALIBRATOR SPAN

- - CALIBRATION COMPLETE - -

CALIBRATOR OFF, CLOSING VALVES

TIME REMAINING 00 : 02 : 00

SKIP