Teledyne OT-3 operating instructions Setting the Alarm Setpoints, HI Range, LO Range, Set Alarm

Trace Oxygen Analyzer Operation

4.3.1 HI Range

Setting the HI Range full-scale value defines the LEAST sensitive analysis range to be used. To set the HI Range:

1.Press the SET HI RANGE Function button once.

2.Immediately (within 5 seconds) press either the D or Ñ button to raise or lower the displayed value, as required, until the display reads the desired full-scale percent concentration.

4.3.2LO Range

Setting the LO Range full-scale value defines the MOST sensitive range to be used. To set the LO Range:

1.Press the SET LO RANGE Function button once.

2.Immediately (within 5 seconds) press either the UP or DOWN arrow button to raise or lower the displayed value, as required, until the display reads the desired full-scale percent concentration.

4.4Setting the Alarm Setpoints

The alarm setpoints can be adjusted over the full range of the analyzer (0-9999 ppm oxygen content). The set point values are expressed in ppm only.

4.4.1 Set Alarm 1

Alarm 1 can be set either as a high or low alarm. To configure this alarm to your preferences:

1.Press the SET ALARM 1 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 vice-versa (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 1 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,

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