ASR Technology. 1  ControlMaster Elite VFD + A-motor = ASR. 2  Intelligent speed control - the right speed at the right time! 3  Extended speed range at light loads (<40 4 %) Adjustable speed range at heavier loads (> 40 %) Rated speed at full load is half the rated speed of equivalent 2-speed hoist.
The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2. This mineral's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool's gold. The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal. Pyrite is the most common of the sulfide minerals. The name pyrite is derived from the Greek ÏÏÏÎ¯ÏÎ·Ï (pyritÄs), of fire or in fire, in turn from ÏÏÏ (pyr), fire.
The chemical formula for Pyrite is FeS2 (Iron sulphide). It is a naturally occurring mineral; it is the most abundant Sulphide mineral on the earth. Pyrite or iron pyrite is also used to name Iron sulphide.Also, Foolâs gold is another name for Pyrite. The word Pyrite is a Greek word; the word pyr means fire. In early days, this had been used to make fire by striking against metal or any other hard material.owever, when you closely monitor the color of these two materials, gold and pyrite, the difference between gold and pyrite can be understood easily. It is the first simple method of distinguishing one from another.