Tools and Testing Instruments Flashcards
6 cards from real G3 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Tools and Testing Instruments flashcards as text
What instrument measures gas pressure at an appliance gas valve?
Answer: Manometer or digital pressure gauge
A manometer measures gas pressure in inches of water column.
What does a combustion analyzer measure?
Answer: Flue gas components including CO, CO2, O2, and temperature
It measures flue gas components to evaluate combustion efficiency and safety.
What is a combustible gas detector used for?
Answer: Detecting the presence and location of gas leaks
It senses combustible gases in air to help locate leaks.
When should a CO detector be used during service work?
Answer: Every time a gas appliance is serviced as standard practice
A personal CO detector should be used during every gas service call.
What is a pipe wrench used for in gas installation?
Answer: Gripping and turning threaded pipe and fittings
Serrated jaws grip round pipe for tightening and loosening threaded connections.
What is a draft gauge used for?
Answer: Measuring draft (pressure difference) in the vent system
A draft gauge measures the negative pressure that draws combustion products through the vent.