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Coded panels were the earliest type of central fire alarm control, and were made during the 1800s to the 1970s. A coded panel is similar in many ways to a modern conventional panel (described below), except each zone was connected to its own code wheel, which, depending on the way the panel was set up, would either do sets of four rounds of code until the initiating pull station was reset ...
A motor control center (MCC) is an assembly to control some or all electric motors in a central location. It consists of multiple enclosed sections having a common power bus and with each section containing a combination starter, which in turn consists of motor starter , fuses or circuit breaker , and power disconnect . [ 1 ]
SPX Corporation is an American manufacturing company, headquartered in Charlotte, North Carolina. [2] [3] [4] The company operates within four markets: heating, ventilation, and air conditioning (), detection and measurement, power transmission and generation, and engineered solutions.
The common hand soap dispenser is such a pump. Radial piston pump – a form of hydraulic pump where pistons extend in a radial direction. Vibratory pump or vibration pump – a particularly low-cost form of plunger pump, popular in low-cost espresso machines. [15] [16] The only moving part is a spring-loaded piston, the armature of a solenoid.
The company was started in 1903 as Lee Stroyer, a joint venture by Jens Stroyer and Pelham Lee.In 1905, following the departure of Stroyer, it was relocated to Paynes Lane, Coventry, and renamed as Coventry Simplex by Horace Pelham Lee, [1] a former Daimler employee, who saw an opportunity in the nascent internal combustion engine market.
A pedestal sump pump with a float switch. A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float.
In mathematical optimization, Dantzig's simplex algorithm (or simplex method) is a popular algorithm for linear programming. [ 1 ] The name of the algorithm is derived from the concept of a simplex and was suggested by T. S. Motzkin . [ 2 ]
The Weil–Felix test is an agglutination test for the diagnosis of rickettsial infections. It was first described in 1916. It was first described in 1916. By virtue of its long history and of its simplicity, it has been one of the most widely employed tests for rickettsia on a global scale, despite being superseded in many settings by more ...