A popular material in metal strain gauge manufacture is a copper−nickel−manganese alloy, which is known by the trade name of "Advance." Semiconductor types have piezoresistive elements, which are considered in greater detail in the next section. Compared with metal gauges, semiconductor types have a much superior gauge factor (up to 100 times better) but are more expensive. Also, while metal gauges have an almost zero temperature coefficient, semiconductor types have a relatively high temperature coefficient.
In use, strain gauges are bonded to the object whose displacement is to be measured. The process of bonding presents a certain amount of difficulty, particularly for semiconductor types. The resistance of the gauge is usually measured by a d.c. bridge circuit, and the displacement is inferred from the bridge output measured. The maximum current that can be allowed to flow in a strain gauge is in the region of 5 to 50 mA depending on the type. Thus, the maximum voltage that can be applied is limited and, consequently, as the resistance change in a strain gauge is typically small, the bridge output voltage is also small and amplification has to be carried out. This adds to the cost of using strain gauges.
25 Doa Melimpah2 Rezeki 1. DIAMALKAN SETELAH SHALAT ISYA, Sebelum membaca amalan yang akan disampaikan di bawah ini, terlebih dulu lakukan : Setelah shalat isya lakukan shalat sunat ba’diyah 2 rakaat, Shalat tobat 2 rakaat , setelah selesai shalat tobat bacalah : Istighfar /astaghfirullahal adhim 1000x Laa ilaaha illa anta subhanaka inni kuntu minadhdholimin 100x Terus Shalat hajat 2 rakaat , setelah selesai shalat hajat bacalah: Sholawat : asholaatu wassalaamu ‘alaika yaa sayyidi rasullallah, hud bi yadii qolat hillati, adrikni (1000x) Yaa latif, yaa latif, yaa latif, sampai subuh (usahakan jangan kurang dari 41.000 x) Catatan : amalan di atas cukup diamalkan sekali saja (tapi tiap malam lebih bagus) bila anda sedang benar-benar mendapat kesulitan yang sudah tidak bisa diselesaikan lagi dengan cara biasa. 2. BARANG SIAPA SETIAP SELESAI SOLAT SUBUH DAN MAGRIB MAU MEMBACA : LAA ILAHA ILLA LLOOH AL MALIKUL HAQQUL MUBIIN. MUHAMMADUN RASULLULAH. SHODIQUL WA’DUL AMIIN 100x Maka All...
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