Teledyne OXYGEN DETECTOR 319R - Manual (Page 10)

6
2.0 Installation & Operation 319R
TELEDYNE BROWN ENGINEERING
Analytical Instruments
Setting Alarms
The alarms can be adjusted over the full scale range, and they are set
as a percent of full scale. Thus, an alarm set to indicate 192 on the display
while on the 200 PPM O
2
range will activate at 192 PPM O
2
on the 200
PPM O
2
range and at 1920 O
2
on the 2000 O
2
range (96% of full scale). To
set the alarms:
1. Place the range switch located below the front panel display in
the 2000 PPM range position (or highest range available).
2. Place the power switch in the ON position.
3. To set the high alarm, hold down the SET HI ALARM button
while turning the potentiometer to the right of the button until
the display reads the desired concentration.
4. To set the low alarm, hold down the SET LO ALARM button
while turning the potentiometer to the right of the button until
the display reads the desired concentration.
5. Remember, the System/Cell Failure alarm is factory set at 2%
of full scale; should this alarm trigger, the LED to the left of the
front panel display will blink.