RADIOMETER ABL90 FLEX User Manual

ABL90 FLEX reference manual Contents
Sample measurements............................................................... 5-8
Corrections............................................................................... 5-8
Quality Management.......................................................................... 5-9
Introduction.............................................................................. 5-9
System/ analysis checks............................................................. 5-9
Calibration...............................................................................5-12
Measurement...........................................................................5-12
Reference electrode..........................................................................5-13
Background information about the reference electrode ..........................5-14
Purpose...................................................................................5-14
Fixed potential .........................................................................5-14
Use.........................................................................................5-14
Construction of the reference electrode ...............................................5-15
Diagram..................................................................................5-15
Parts and functions ...................................................................5-15
pH and electrolyte sensors ................................................................5-16
Construction of the pH and electrolyte sensors .....................................5-17
Diagram..................................................................................5-17
Parts and description.................................................................5-17
Measuring principle of the pH and electrolyte sensors............................5-18
Potentiometric measuring principle..............................................5-18
Electrode chain.........................................................................5-18
Parts and description.................................................................5-18
Electrode chain potential............................................................5-18
Unknown potential....................................................................5-19
Ion-sensitive membrane............................................................5-19
Nernst equation........................................................................5-19
Activity and concentration..........................................................5-19
Calibration of the pH and electrolyte sensors........................................5-20
Introduction.............................................................................5-20
2-point calibration ....................................................................5-20
Calibration levels......................................................................5-20
Calibration...............................................................................5-20
Measurement – pH and electrolytes ....................................................5-21
Measurement...........................................................................5-21
Checks....................................................................................5-21
pCO
2
sensor....................................................................................5-22
Construction of the pCO
2
sensor.........................................................5-23
Diagram..................................................................................5-23
Parts and description.................................................................5-23
Measuring principle of the pCO
2
sensor ...............................................5-24
Electrode chain.........................................................................5-24
Parts and description.................................................................5-24
Electrode chain potential............................................................5-24
Measuring process ....................................................................5-25
Calibration of the pCO
2
sensor ...........................................................5-26
Introduction.............................................................................5-26
Calibration levels......................................................................5-26
Sensitivity ...............................................................................5-26
Measurement – pCO
2
........................................................................5-27
Measurement...........................................................................5-27
Checks....................................................................................5-27
pO
2
sensor......................................................................................5-28
Measuring principle of the pO
2
sensor .................................................5-29
Optical system for pO
2
...............................................................5-29

RADIOMETER ABL90 FLEX Specifications

General

Type	Blood Gas Analyzer
Analysis Time	35 seconds
Parameters Measured	pH, pCO2, pO2
Sample Volume	65 μL
Connectivity	Ethernet, USB
Calibration	Automatic
Data Management	Integrated data management system
Sample Type	Whole blood, plasma, serum
Power Requirements	100-240 V AC, 50-60 Hz, 150VA
Operating Temperature	15-32 °C (59-90 °F)
Operating Humidity	20-85% relative humidity, non-condensing