Nhau dzeZvigadzirwa
Chii Chinoitika Kana Ukadarika Maitiro Ekutevedzera Matambo Ekushandisa Instrumentation?
Tambo dzezvishandiso zvisingatevedzere mitemo dzinokonzera kurasikirwa kwechiratidzo, kutadza kwemidziyo, uye njodzi dzekuchengetedza.
Ruzivo rweindasitiri runoratidza kuti 80% yenzvimbo dzisingatevedzeri mitemo yekuisa zvinhu dzinosangana nematambudziko mukati memwedzi gumi nemisere.
Dzidza mhedzisiro chaiyo yekusvetuka zvinodiwa zveEN 50288-7, IEC 60332, kana NEC - uye kuti sei kutevedzera mitemo kuchidzivirira chirimwa chako.
Ungasarudza Sei Cable Yekushandisa Zvishandiso Zvakawanda Yakakodzera Yepurojekiti Yako?
Kusarudza tambo dzezvishandiso zvemapeya akawanda kunoda kuziva huwandu hwemapeya (1-100+), saizi yemuchina (18-24 AWG / 0.5-2.5mm²), rudzi rwekudzivirira (foil/braid/composite), uye zvinhu zvejaketi (PVC/LSZH/PUR).
Gwaro iri rinobata kutevedzera EN 50288-7 uye hurongwa hwekusarudza nhanho nhanho hwemasaini eanalog needhijitari.
EN 50288-7 Standard Yakatsanangurwa: Zvinofanira Kuzivikanwa Nevatengi Vematambo Ekushandisa Zvishandiso
EN 50288-7 ndiyo chiyero cheEurope chetambo dzemidziyo nedzekudzora, ichitsanangura maparamita emagetsi (impedance, capacitance, attenuation), hunhu hwemakanika, kunonoka kwemurazvo, uye chiyero chekupisa.
Vatengi vanofanirwa kuona kuti CE marking inotevedzera zvinodiwa uye zvinodiwa papurojekiti.
Twisted Pair vs Coaxial vs BS5308: Ndeipi Cable Yekushandisa Yaunofanira Kusarudza?
Kusarudza pakati pe twisted pair (crosstalk reduction), coaxial (high-frequency), uye BS5308 (oiri & gas spec) zvinoenderana nerudzi rwechiratidzo chako, daro, uye nharaunda.
Twisted pair inobudirira zvikuru pa 4-20mA ne RS485. Coaxial ye high-frequency uye vhidhiyo.
BS5308 inowedzera dziviriro yemakanika uye IS rating yezvirimwa zve petrochemical.
Chii chinonzi Shielded Instrumentation Cable uye Nei Shielding Ichikosha?
Tambo dzakachengeteka mukati dzinofanira kunge dzakapfava sebhuruu (RAL 5015) zvichienderana neIEC 60079-14 kuti dzionekwe nzvimbo ine njodzi.
Kodhi iyi yemavara inosungirwa inobvumira mainjiniya emagetsi kusiyanisa ipapo ipapo macircuit eIS kubva kune tambo dzemagetsi dzisiri dzeIS, zvichidzivirira kubatana kwesimba rine njodzi netsaona.
Cable Yakachengeteka Mukati Inofanira Kuva Yebhuruu Here?
Ehe, maererano neIEC 60079-14, tambo dzakachengeteka dzinofanira kunge dziine sheath yekunze yebhuruu (RAL 5015) kuti dzionekwe nzvimbo ine njodzi.
Kodhi iyi yemavara inosungirwa inobvumira kuona nekukasika macircuit eIS, zvichidzivirira kubatana netsaona kwesimba risiri reIS.
Pane zvisizvo zvishoma zviripo kune tambo diki kwazvo uye magadzirirwo aripo.
Chii chinonzi Intrinsically Safe SWA Armored Cable?
Waya yeSWA (Steel Wire Armour) yakachengeteka zvikuru inosanganisa simba rekudzivirira (IS) nekudzivirira kwemuchina (simbi wire armour). Kudzivirira kupwanya kusvika 4,000 N/10cm, dziviriro yemakonzo/zvipembenene, uye simba guru rekusunga nzvimbo dzine njodzi. LSZH sheath yebhuruu-yakajeka inochengetedza IS ichitevedzera ukuwo kudzivirira kunowedzera kugara kwenguva refu.
Chii chinonzi Cable yeAlarm yeMoto Yakachengeteka?
Waya yekunyevera moto yakachengeteka inosanganisa kuganhurirwa kwesimba (inodzivirira kupisa) nekuvimbika kwedunhu (inochengetedza kushanda panguva yemoto).
Yakatenderwa kunzvimbo dzine njodzi (Zone 0/1/2) ine mareti akaita seFE180 (180 minutes fire survival) uye LSZH sheathing.
Dzidza kuti tambo dzemoto dzeIS dzinoona sei moto dzisingaukonzere.
Sei Makabati Akachengeteka Mukati Ari Bhuruu?
Tambo dzakachengeteka mukati memuviri ndedzebhuruu (RAL 5015) zvichienderana neIEC 60079-14 kuti dzionekwe nekukasika munzvimbo dzine njodzi. Iyi kodhi yemavara inosungirwa inobvumira mainjiniya emagetsi kusiyanisa maseketi eIS kubva kune asiri eIS—zvichidzivirira kubatana kwesimba rine njodzi netsaona. Dzidzai zvinodiwa, zvisingabvumirwe, uye zvinodiwa pakusarudza.