G3 Tools and Testing Instruments 2

Question 1

What instrument measures gas pressure at an appliance gas valve?

Accepted Answer

Manometer or digital pressure gauge

Answer

Thermometer

Answer

Ammeter

Answer

Tachometer

Question 2

What does a combustion analyzer measure?

Accepted Answer

Flue gas components including CO, CO2, O2, and temperature

Answer

Gas pipe diameter

Answer

Gas flow rate

Answer

Electrical voltage at gas valve

Question 3

What is a combustible gas detector used for?

Accepted Answer

Detecting the presence and location of gas leaks

Answer

Measuring BTU content

Answer

Controlling gas pressure

Answer

Measuring pipe temperature

Question 4

When should a CO detector be used during service work?

Accepted Answer

Every time a gas appliance is serviced as standard practice

Answer

Only when homeowner requests

Answer

Only for commercial

Answer

Only during new installations

Question 5

What is a pipe wrench used for in gas installation?

Accepted Answer

Gripping and turning threaded pipe and fittings

Answer

Cutting pipe to length

Answer

Measuring pipe diameter

Answer

Deburring cut ends

Question 6

What is a draft gauge used for?

Accepted Answer

Measuring draft (pressure difference) in the vent system

Answer

Measuring gas pressure at burner

Answer

Checking gas valve electrical signal

Answer

Testing vent pipe material strength