德國parker品牌概述:
parker派克是世界一流的工業(yè)企業(yè),制造流體傳動元器件及系統(tǒng),用于控制各種機(jī)械和其他設(shè)備的傳動、流量和壓力。parker派克提供1,400多條產(chǎn)品線,用于1,000多種工程機(jī)械、工業(yè)和航空航天領(lǐng)域內(nèi)的項目。parker派克是一家能夠給客戶提供計算機(jī)傳動控制解決方案的制造商。此外,在該領(lǐng)域parker派克擁有世界上較大的銷售網(wǎng)絡(luò),遍布全球的7,500多個銷售商為400,000多個用戶提供。
德國parker主要產(chǎn)品:
parker傳感器,parker壓力傳感器,parker溫度傳感器,parker流量計,parker渦輪流量計,parker齒輪流量計,parker壓力控制器。
parker產(chǎn)品特點(diǎn):
parker壓力傳感器的讀數(shù)盤和測量盤有間隔相同的縫隙。測量盤隨被測物體轉(zhuǎn)動,每轉(zhuǎn)過一條縫隙,從光源投射到光敏元件(見光電式傳感器)上的光線產(chǎn)生一次明暗變化,光敏元件即輸出電流脈沖信號。parker反射式光電傳感器在被測轉(zhuǎn)軸上設(shè)有反射記號,由光源發(fā)出的光線通過透鏡和半透膜入射到被測轉(zhuǎn)軸上。轉(zhuǎn)軸轉(zhuǎn)動時,反射記號對投射光點(diǎn)的反射率發(fā)生變化。反射率變大時,反射光線經(jīng)透鏡投射到光敏元件上即發(fā)出一個脈沖信號;反射率變小時,光敏元件無信號。在一定時間內(nèi)對信號計數(shù)便可測出轉(zhuǎn)軸的轉(zhuǎn)速值。
parker壓力傳感器的能源輸入及信號輸出是由兩組帶間隙的特殊環(huán)形旋轉(zhuǎn)變壓器承擔(dān)的,因此可實現(xiàn)能源及信號的無接觸傳遞。該應(yīng)變傳感器測量原理如圖2所示。 在一段特制的彈性軸上粘貼專用的測扭應(yīng)變片并組成電橋,以形成基礎(chǔ)扭矩傳感器,然后在軸上再固定能源環(huán)形旋轉(zhuǎn)變壓器的次級線圈、軸上印刷電路板和信號環(huán)旋轉(zhuǎn)變壓器的初級線圈。電路板上包含整流穩(wěn)壓電源、儀表放大電路及v/f變換電路。在傳感器的外殼上固定著激磁電路、能源環(huán)形旋轉(zhuǎn)變壓器的初級線圈、信號環(huán)形變壓器的次級線圈及信號處理電路。 傳感器電路部分在工作時,由外部電源向傳感器提供15v電源,激磁電路中的晶體振蕩器產(chǎn)生400hz的方波,經(jīng)過tda2003功率放大即產(chǎn)生交流激磁功率電源,通過能源環(huán)形旋轉(zhuǎn)變壓器從靜止的初級線圈t1傳遞至旋轉(zhuǎn)的次級線圈t2, 然后將得到的交流電源通過軸上的整流、濾波電路處理后變成%26;#177;5v的直流電源。按信號形式的不同,轉(zhuǎn)速傳感器可分為模轉(zhuǎn)速傳感器擬式和數(shù)字式兩種。前者的輸出信號值是轉(zhuǎn)速的線性函數(shù),后者的輸出信號頻率與轉(zhuǎn)速成正比,或其信號峰值間隔與轉(zhuǎn)速成反比。
parker壓力傳感器由兩塊固定金屬板和與轉(zhuǎn)動軸相連的可動金屬板構(gòu)成。可動金屬板處于電轉(zhuǎn)速傳感器容量*大的位置,當(dāng)轉(zhuǎn)動軸旋轉(zhuǎn)180°時則處于電容量*小的位置。電容量的周期變化速率即為轉(zhuǎn)速。可通過直流激勵、交流激勵和用可變電容構(gòu)成振蕩器的振蕩槽路等方式得到轉(zhuǎn)速的測量信號。介質(zhì)變化型是在電容器的兩個固定電極板之間嵌入一塊高介電常數(shù)的可動板而構(gòu)成的?蓜咏橘|(zhì)板與轉(zhuǎn)動軸相連,隨著轉(zhuǎn)動軸的旋轉(zhuǎn),電容器板間的介電常數(shù)發(fā)生周期性變化而引起電容量的周期性變化,其速率等于轉(zhuǎn)動軸的轉(zhuǎn)速。
parker傳感器 德國parker傳感器產(chǎn)品型號:
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parker peff62gssm sae female flange elbow bspp 6000 psi, 1/2", metric bolts
parker peff62gss sae female flange elbow bspp 6000 psi, size 1/2"
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parker peff38gss sae female flange elbow bspp 3000 psi, size 2"
parker peff38gsm sae female flange elbow bspp 3000 psi, 2", metric bolts