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.
A. The design and location of the gas detector has much to do with the maximum area one detector can properly cover. A correctly positioned and mounted Brasch gas detector is designed to provide coverage over an area of 7000 to 9000 square feet when placed in a building with a ceiling height of 13 feet or less.