Teledyne MX300 - Manual (Page 11)

Portable Oxygen Monitor Introduction
Teledyne Analytical Instruments 3
NOTE: IF THE LOW ALARM CONDITION IS TRIGGERED WITH
THE OXYGEN LEVEL STAYING ABOVE THE SAFETY LIMIT
OF 18%, THE ALARM BUZZER CAN BE DEACTIVATED BY
PRESSING THE ALARM SILENCE KEY. IF ALARM CONDI-
TION IS NOT CORRECTED WITHIN ABOUT 115 SECONDS,
THE ALARM BUZZER WILL REACTIVATE. PRESSING THE
ALARM SILENCE KEY AGAIN WILL SILENCE THE ALARM
BUZZER ONCE AGAIN FOR ABOUT 115 SECONDS, WITH
THE BUZZER REAACTIVATING IF THE ALARM CONDI-
TIONS PERSIST.
NOTE: IF THE LOW ALARM CONDITION IS TRIGGERED WITH
THE OXYGEN LEVEL FALLING BELOW 18%, THE
√
SENSOR SIGN WILL FLASH ALONG WITH THE GREEN
LIGHT, AND THE BUZZER WILL ACTIVATE. IN THIS CON-
DITION, THE ALARM BUZZER CANNOT BE SILENCED.
WHILE HOLDING DOWN THE ALARM SILENCE KEY MAY
MOMENTARILY SILENCE THE ALARM BUZZER, AUDIBLE
ALARM WILL RETURN UPON DISENGAGING THE ALARM
SILENCE KEY. HOLDING THE KEY FOR LONGER DURA-
TIONS WILL INITIATE THE “STUCK KEY” ALARM, WHICH
CAN BE DEACTIVATED ONLY VIA REMOVING THE BAT-
TERIES FROM THE ANALYZER. ANALYZER SHOULD BE
RECALIBRATED UP ON REPOWERING.
1.1 Features
The following features are standard on the MX300 Monitor:
 Large easy to read 3½-digit LCD (see options)
 Automatic LCD back lighting upon key press
 Microprocessor controlled
 Up/Down control keys on the front panel
 Sensor fail/disconnect alarm indicator (audible and visual)
 Two adjustable concentration alarms with user-defined set
points
 Alarm Silence key
 2000 operating hours from 3 AA alkaline batteries
 Battery status indicator
 Battery test function
 Stand for upright tabletop deployment