Oxygen Analyzer
- Introduction...
- 1. What is oxygen ...
- 2. What is its pri...
- 3. How to calibrat...
- 4. How to use?...
- 5. What precaution...
Introduction
DR. SANDEEP KADAM
MD, DM (Neonatology)
Associate Consultant Neonatologist
Department of Pediatrics
KEM Hospital
Pune
1. What is oxygen analyzer?
► An equipment which analyses oxygen concentration being
delivered to the neonate
► Small cylindrical device consisting of a galvanic cell with
sensor
► Galvanic sensor has two dissimilar electrodes in aqueous
electrolyte KOH
2. What is its principle?
► Oxygen diffuses from one side of sensor through
semi - permeable membrane
► Oxidation – reduction reaction generates electric current
proportional to oxygen concentration
► Current generated is measured and conditioned with
external electronics and displayed on digital meter
3. How to calibrate?
► Switch on the analyzer and expose the sensor to the
atmosphere
► Displayed value should be 21%
► If it does not, control knob is rotated till it reads 21%
► The instrument has an accuracy of ± 2%
4. How to use?
► After calibration, place the sensor inside oxygen hood
away from the oxygen inflow end of the tubing
► Wait for 5-20 seconds as this is the usual time between
placement and detection of the reading (Response time)
► Displayed value is the concentration of oxygen
5. What precautions should be taken?
► Do not pull or bend the sensor
► Always calibrate before measurement
► Do not leave oxygen monitor stored with power switch on
► Avoid high or low temperature to prevent damage to the
sensor fluid