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Author Question: What type of sensor is most often used to detect very low parts per million for toxic refrigerants? ... (Read 57 times)

danielfitts88

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on: Jul 24, 2018
What type of sensor is most often used to detect very low parts per million for toxic refrigerants?
 
  A) Photoacoustic infrared (PIR) B) Nondispersive infrared (NDIR)
  C) Electrochemical (EC) sensors D) Ceramic metal oxide semiconductor (CMOS)

Question 2

Why are a hammer and chisel used on a DOT 39 cylinder?
 
  A) To break open the cylinder
  B) To lessen refrigerant pressure
  C) To remove the nozzle
  D) To open the rupture disk when disposing an empty cylinder


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nhea

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Reply #1 on: Jul 24, 2018
Answer to Question 1

C

Answer to Question 2

D


danielfitts88

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Reply 2 on: Jul 24, 2018
Wow, this really help

robbielu01

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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