Teledyne TED-200 - Medical application oxygen monitor - Manual (Page 16)

2 Operations
Teledyne Analytical Instruments 2-6
NOTE:The HI alarm may be defeated by setting the limit one step above 100%.
The display will show HI ALARM OFF and flash ALARM DEFEATED.
2. To set the LO alarm: Press the SET LO ALARM key once. Within 5
seconds, use the yellow UP and DOWN arrow keys to select a value. A
safety feature will not allow you to select a LO alarm value less than 17.
NOTE:The TED 200-T is designed to prevent crossing of HI/LO alarm settings. If
you try to make the LO alarm higher than the HI alarm, it will push the HI
alarm setting up as you continue to raise the LO alarm setpoint. This
also applies when attempting to set the HI alarm lower than the LO
alarm.
3. To test the alarms, press the ALARM TEST key twice. The display will
show ALARM TEST. The oxygen reading on the display will sequence to
the HI alarm value and activate the audible/visible alarm for 1-2 seconds. It
will then sequence down to the LO alarm value and activate the audible/
visible alarm for 1-2 seconds.
4. To override the audible alarm, press the ALARM SILENCE key:
• once for 30 seconds of silence;
• twice for 90 seconds of silence;
• three times for 180 seconds of silence;
• four times to discontinue the override.
The display will flash ALARM SILENCE and then count down the remaining
alarm silence time. The unit will continue monitoring and displaying the oxygen concen-
tration.
NOTE: The accuracy of the alarm Set Points of the TED 200 is the same as
that of the O
2
reading as these are both derived mathematically from
the A/D converter reading.
NOTE: It is highly suggested not to set low alarm below 18%.
2.2 Use
2.2.1 Procedure
Note: Prior to use, always test the batteries and alarms; check calibration, the
sensor for leaks and damage, and the alarm settings.
The TED 200-T can be used to monitor gas mixtures for oxygen in two basic
modes:
1. In breathing circuits or other instances where gases are flowing in tubing
circuits.
2. In confined volumes such as incubators or tents.