Gas Analyzers

Question 1

define analyzer

Answer 1

device which separates gases into parts in order to determine the nature of the whole

single sample, single moment in time

Question 2

define monitor

Answer 2

device which is used for continuous analysis and provides a warning if values change, constant sampling with alarms

Question 3

types of gas monitors

Answer 3

1. o2 analyzer/monitor
2. transcutaneous o2 monitor
3. o2 saturation monitor
4. he analyzer
5. no/n2o monitors
6. capnometer
7. mass spectrometry
8. arterial blood gas analyzer

Question 4

gas analyzer principles

Answer 4

1. electrochemical
   - galvanic & polarographic cells
2. physical
   - paramagnetism
3. electrical
   - thermal conductivity
4. chemical
   - volumetric or manometric
5. chemi-luminescence

Question 5

Galvanic and Polarographic components

Answer 5

• anode (lead/silver)
• cathode (gold/platinum)
• electrolyte gel (KOH or KCl)
• semipermeable membrane (exclusive to o2)
• ammeter
• polarizing circuit for polarographic

Question 6

accuracy of electrochemical analysis affected by

Answer 6

1. extreme temperatures
2. system pressure changes
3. moisture on membrane