Instrumentation cable yog qhov tsawg-voltage cable tshwj xeeb uas siv los xa cov cim ntsuas tsis muaj zog hauv kev lag luam automation. Nws lub luag haujlwm tseem ceeb tsis yog xa cov hluav taws xob siab - lub zog hluav taws xob, tab sis kom ntseeg tau cov teeb liab kev ncaj ncees thiab tiv thaiv - cuam tshuam. Nws txuas lub teb sensors, transmitters rau DCS thiab PLC tswj systems.
Cov ntawv thov tseem ceeb
Nws xa 4-20mA analog tam sim no signals, millivolt-theem kub signals thiab digital discrete signals. Nws yog dav siv rau siab, ntws, theem thiab kub transmitters, RTDs thiab thermocouple them circuits hauv tshuaj, fais fab, roj & roj, tshuaj thiab lwm yam kev lag luam. Rated voltage: feem ntau 300/500V lossis 450/750V.
Hom Kev Tsim Kho (los ntawm sab hauv mus rau sab nrauv)
- Tus neeg xyuas pib: siab -purity tooj liab. Cov khoom siv tooj liab rau kev txhim kho ruaj khov, stranded saj zawg zog tooj liab rau kev txav mus los; tinned tooj liab rau corrosive ib puag ncig.
- Rwb thaiv tsev: PE (tsawg capacitance, nyiam rau ntev - kis tau tus mob), PVC, LSZH, fluoropolymer, thiab lwm yam.
- Twisted khub: ob conductors twisted ua ke los tiv thaiv electromagnetic suab nrov, kos npe tsim ntawm instrumentation cables.
- Shielding (qhov tseem ceeb): aluminium ntawv ci, tooj liab braid. Hom muaj xws li ib tug khub daim thaiv npog, tag nrho cov ntaub thaiv npog, ib tug khub ntxiv rau tag nrho ob daim ntaub thaiv npog. Ib qho dej xaim yog nruab rau cov ntaub thaiv npog av.
- Sheath: PVC / LSZH / PE. Lub teeb xiav sheath feem ntau yog siv rau intrinsically muaj kev nyab xeeb circuits nyob rau hauv tej qhov chaw txaus ntshai. Steel daim kab xev armouring yog muaj rau kev tiv thaiv - tsoo, tiv thaiv - nas los yog faus ncaj qha installation.
Qhov txawv ntawm Ordinary Control Cable
- Instrumentation cable: muab qhov tseem ceeb rau lub teeb liab kev ncaj ncees, feem ntau twisted khub qauv, tsom rau kev tiv thaiv thiab qis capacitance kom tsis txhob crosstalk, rau qis - theem teeb liab.
- Tswj cable: feem ntau yog rau ntawm -tawm tswj, ntau ntau- cov qauv tseem ceeb nrog kev xaiv tiv thaiv, siv rau relay, contactor thiab lwm yam siab - fais fab hloov circuits.
Hom Hom
- General twisted khub shielded instrumentation cable (KJYVP): dav siv rau 4-20mA loops.
- Intrinsically ruaj ntseg instrumentation cable (IA): rau qhov chaw muaj phom sij tawg, lub teeb xiav sheath.
- Thermocouple extension / them cable & RTD cable: nplooj siab rau kub teeb liab kis tau tus mob.
- Armored instrumentation cable: rau cable tais lossis faus ncaj qha, tiv thaiv kev puas tsuaj.
