Teledyne OT-3 User Manual download pdf (Page 34)

Operation OT-3

Teledyne Analytical Instruments 26

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.

4.4.2 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 how the

alarm was last configured. 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 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 Power Failure Alarm

The power failure alarm provides a set of form C contacts and are

configured for failsafe operation. The contacts remain energized when

the whenever power is applied to the instrument.

4.5 Alarm Delay

The alarms have a user-settable delay feature which can delay the

onset of an alarm. The delay can be set from 0-20 minutes in 1 minute

increments.

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Teledyne OT-3 User Manual Page 34