Teledyne MX300-I Manuale Utente

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Portable Oxygen Monitor  
Introduction 
 
 
 Teledyne 
Analytical 
Instruments 
13 
is illuminated on the LCD and the audible and visual alarms are 
activated whenever a fault is detected.   
1.5.1 Sensor 
The MX300-I uses the Teledyne Class R17MED disposable oxygen 
sensor. The sensor is made up of a sensing cathode and anode (fuel) 
immersed in electrolyte and packaged in a small plastic container. 
Oxygen entering the sensor reacts with the anode and a proportional 
current is collected at the sensing cathode, which is sent to the 
electronics where it is converted into a digital signal and displayed on 
the LCD Screen. 
Attached to the R17MED sensor is a removable plastic diverter. 
This diverter is used to facilitate the transport of gas mixtures through 
the sensor. The diverter, packaged separately when shipped, is necessary 
when the tee adapter is used to sample gas flowing through a tube.  
The diverter is not necessary and should not be used when the 
sensor is placed directly in a chamber, or when the sensor is used in 
confined volume monitoring, such as incubators and inhalation tents.   
 
CAUTION: 
THE R17MED SENSOR CONTIANS A CAUSTIC 
ELECTROLYTE AND LEAD. DO NOT TRY TO OPEN 
THE SENSOR ASSEMBLY. CHECK THE SENSOR 
REGULARLY FOR LEAKS. IF THE SENSOR IS 
LEAKING, REPLACE IT. DO NOT TRY TO REPAIR IT. 
CONTACT TELEDYNE FOR THE MATERIAL SAFETY 
DATA SHEET RELATED TO HANDLING AND 
DISPOSAL. 
CAUTION: 
REMOVE AND SAVE THE DIVERTER WHEN THE 
SENSOR IS USED IN CONFINED VOLUME 
APPLICATIONS. 
 
1.5.2 Signal Processing 
The electrical voltage developed in the sensor is sent to the electronics. 
Processing includes amplification, conversion to digits, and comparison to 
alarm set points if appropriate. Using a microprocessor allows for easier 
setting of alarms, automatic calibration, and self-diagnosis.