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HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system. [1] Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken (e.g. start the ...
JB Marks Municipality (Tswana: Mmasepala wa JB Marks; Afrikaans: JB Marks Munisipaliteit) is a local municipality within the Dr Kenneth Kaunda District Municipality, in the North West province of South Africa. It was established after the August 2016 local elections by merging the Tlokwe and Ventersdorp municipalities. [5]
Central, "all-air" air-conditioning systems (or package systems) with a combined outdoor condenser/evaporator unit are often installed in North American residences, offices, and public buildings, but are difficult to retrofit (install in a building that was not designed to receive it) because of the bulky air ducts required. [32] (Minisplit ...
JB Hi-Fi was established in the Melbourne suburb of Keilor East by John Barbuto in 1974, selling music and specialist hi-fi equipment. [3] Barbuto sold the business in 1983 to Richard Bouris, David Rodd and Peter Caserta, who expanded JB Hi-Fi into a chain of ten stores in Melbourne and Sydney turning over $150 million by 2000, when they sold the majority of their holding to private equity.
Gauge block, (also known as a gage block, Johansson gauge, slip gauge, or Jo block) a precision ground and lapped length measuring standard. It is used as a reference for the setting of measuring equipment used in machine shops , such as micrometers , sine bars , calipers , and dial indicators (when used in an inspection role ).
Direct digital control is the automated control of a condition or process by a digital device (computer). [ 1 ] [ 2 ] Direct digital control takes a centralized network-oriented approach. All instrumentation is gathered by various analog and digital converters which use the network to transport these signals to the central controller.