10105/2/1

10105/2/1

流量儀表的選型對儀表能否成功使用往往起著很重要的作用，由于被測對象的復(fù)雜狀況以及儀表品種繁多、性能指標(biāo)各異，使得技術(shù)人員對儀表的選型感到困難。沒有一種十全十美的流量計(jì)，各類儀表都有各自的特點(diǎn)，選型的目的就是在眾多的品種中揚(yáng)長避短，選擇自己zui合適的儀表。

　　一般選型可以從五個(gè)方面進(jìn)行考慮，這五個(gè)方面為儀表性能方面、流體特性方面、安裝條件方面、環(huán)境條件方面和經(jīng)濟(jì)因素方面。五個(gè)方面的詳細(xì)分析如下：

　　1、儀表性能方面：準(zhǔn)確度、重復(fù)性、線性度、范圍度、流量范圍、信號輸出特性、響應(yīng)時(shí)間、壓力損失等；

　　2、流體特性方面：溫度、壓力、密度、粘度、化學(xué)腐蝕、磨蝕性、結(jié)垢、混相、相變、電導(dǎo)率、聲速、導(dǎo)熱系數(shù)、比熱容，等指數(shù)；

　　3、安裝條件方面：管道布置方向，流動(dòng)方向，檢測件上下游側(cè)直管段長度、管道口徑、維修空間、電源、接地、輔助設(shè)備（過濾器、消氣器）、安裝、等；

　　4、環(huán)境條件方面：環(huán)境溫度、濕度、電磁干擾、安全性、防爆、管道振動(dòng)等；

　　5、經(jīng)濟(jì)因素方面：儀表購置費(fèi)、安裝費(fèi)、運(yùn)行費(fèi)、校驗(yàn)費(fèi)、維修費(fèi)、儀表使用壽命、備品備件等。

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MITSUBISHI ELECTRIC 3-PHASE 111V 1.4A 200W AC SERVO MOTOR HF-KP23K *CHIPPED*
 
ELAU SM-070/60/010/P?1/45/M1/B0 SERVO MOTOR, NIB
 
REXROTH SERVO MOTOR MAC112B-0-LD-3-?C/130-A-0/S005 W/ ALLEN BRADLEY ENCODER
 
INDRAMAT 3-PHASE INDUCTION SERVO MOTOR 2AD132D-B05OB2-?AS03-B2N1 *MISSING FAN*
 
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ABB ROBOTICS PS 60/4-75-P
 
MITSUBISHI ELECTRIC 3-PHASE 51V 0.9A 50W AC SERVO MOTOR HC-KFS053K
 
YASKAWA ELECTRIC 400W 200V 3000R/MIN INS.B AC SERVO MOTOR SGMAH-04AAA2C-Y?2*
 
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REXROTH INDRAMAT 3-PHASE INDUCTION SERVO MOTOR 2AD132D-B350A1-?AS03-A2N1 / 237805
 
INDRAMAT PERMANENT MAGNET SERVO MOTOR MDD112D-N-030-N?2M-130PA2 / 255570
 
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MITSUBISHI 3000R/MIN 400W AC SERVO MOTOR HA-FF43BG1
 
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INDRAMAT BRUSHLESS AC SERVO MOTOR MAC112C-0-ED-4-?C/130-A-0/WI520?LX/S005 *PAINT*
 
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MITSUBISHI ELECTRIC 3-PHASE 106V 0.8A 100W AC SERVO MOTOR HF-KP13K
 
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