A(n) ______ analyzer is an oxygen analyzer that uses ...

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A(n) ______ analyzer is an oxygen analyzer that uses paramagnetism to measure oxygen concen-tration.
 
  a. Galvanic c. Paramagnetic
  b. Electrical d. Polarographic

Question 2

Which type of oxygen analyzer should not be used in the presence of anesthetic gases?
 
  a. Polarographic c. Electrical
  b. Paramagnetic d. Galvanic

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Answer to Question 1

ANS: C
The paramagnetic analyzer uses the physical principle of paramagnetism to measure oxygen con-centration. Galvanic and polarographic analyzers use chemical reactions to measure oxygen con-centration, and electrical analyzers use thermal conductivity.

Answer to Question 2

ANS: C
An electrical analyzer uses a Wheatstone bridge setup and monitors the changes in current flow as it relates to oxygen concentrations. The Wheatstone bridge can generate a significant amount of heat and therefore is dangerous to use in the presence of flammable gases, such as anesthetic gases.