Sensor Fail Alarm; Selecting A Fixed Range Or Autoranging - Teledyne 3300TB Operating Instructions Manual

Operation
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
(approximately 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
(approximately 5 seconds) and return to displaying oxygen
concentration.

4.4.3 Sensor Fail Alarm

The SENSOR FAIL alarm has fail safe contacts that are triggered
only when power to instruments is turned off.

4.5 Selecting a Fixed Range or Autoranging

The Model 3300TB can operate in fixed high, fixed low, or
autoranging mode. To change modes:
Teledyne Analytical Instruments
Model 3300TB
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