Imperialism in the U.S. Essay ... DBQ 15 Imperialism is the policy of extending the role of authority of a nation over a foreign country, usually in material gain, Military expansion and Economical reasons. In the late 1800âs and early 1900âs, the United States went through an era of imperialism.
Portable gas detector. A gas detector is a device that detects the presence of gases in an area, often as part of a safety system. This type of equipment is used to detect a gas leak or other emissions and can interface with a control system so a process can be automatically shut down.
Re: DETECTOR: Propane or Combustible Gas. A CO detector does not normally detect natural or propane gas leaks. CO is a byproduct produced from burning these gases. To detect gas leaks in the piping, you need a combustible gas sniffer. Maybe some detectors do both, but not many, and it would say it does.