4 Operation
Model 3300
TA
4-4
Teledyne Analytical Instruments
until the display reads the desired percent concentration. (if
within 5 seconds no key is pressed, the instrument will return to
the sample mode and display oxygen concentration).
After setting the value wait for the unit to time out of this mode (ap-
proximately 5 seconds) and return to displaying oxygen concentration.
4.4.2 Set Alarm 2
Alarm 2 can be set either as a high or low alarm. To configure this
alarm to your preferences:
1. Press the SET ALARM 2 function button once.
2. The display will flash either HI or LO depending on what the
alarm was configured in the last time. If the alarm configuration
must be changed, use the Up or Down keys to toggle the alarm
from HI to LO or viceversa (if within 5 seconds no key is
pressed, the instrument will return to the sample mode and
display oxygen concentration).
3. To change the setting at which the alarm will be actuated, press
the SET ALARM 2 function button once more. The alarm
setpoint will flash on the LED display. Press either the Up or
Down keys to raise or lower the displayed value, as required,
until the display reads the desired percent concentration. (if
within 5 seconds no key is pressed, the instrument will return to
the sample mode and display oxygen concentration)
After setting the value wait for the unit to time out of this mode (ap-
proximately 5 seconds) and return to displaying oxygen concentration.
4.4.3 Power Failure Alarm
This Analyzer does not have the ability to check for cell failure. These
contacts are instead used to check for Power Failure. The sensor fails when
it’s offset in a Oxygen free gas starts rising quickly over a period of a few
days.
