{"product_id":"cable-roll-j-type","title":"Maxwell J Type Thermocouple Compensation Cable Roll 2 x 7\/0.2mm Extension Wire","description":"\u003cp\u003eMaxwell J type thermocouple compensation cable, supplied on a roll. Compensation cable (also called thermocouple extension wire) carries the millivolt signal from a J type thermocouple back to a PID temperature controller, temperature indicator or data logger. It is made from alloys chosen to match the J type thermocouple's EMF characteristic over the ambient temperature range, so the measuring circuit stays accurate all the way to the instrument terminals.\u003c\/p\u003e\n\u003cp\u003eThis is why you cannot extend a thermocouple with ordinary copper wire: joining copper to the thermocouple leads creates an unwanted junction and a temperature reading error. Using J type compensation cable moves the cold junction to the controller's terminals, where the instrument's cold-junction compensation can correct for it. A J type sensor must always be extended with J type cable — K type or plain copper will give a wrong reading.\u003c\/p\u003e\n\u003cp\u003eThe 2 x 7\/0.2 mm construction means two cores, each made up of seven 0.2 mm strands, giving roughly 0.22 mm² per core. Stranded cores keep the cable flexible for pulling through trunking and conduit and for wiring inside control panels. J type is widely used on plastics machinery, so this cable is a common choice for connecting probes to Maxwell FT series PID controllers on extruders, injection moulding machines, ovens, dryers and process heating panels.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Specifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eJ thermocouple compensation wire\u003c\/li\u003e\n\u003cli\u003e0.2mm*7*2\u003c\/li\u003e\n\u003cli\u003e2 cores, 7 strands of 0.2 mm each (approx. 0.22 mm² per core)\u003c\/li\u003e\n\u003cli\u003eStranded conductors for flexible panel and conduit wiring\u003c\/li\u003e\n\u003cli\u003eFor use with J type thermocouples only\u003c\/li\u003e\n\u003cli\u003eSupplied as a cable roll\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDownload:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0790\/4952\/3518\/files\/Maxwell-Full-Product-Catalog.pdf?v=1789532659\" target=\"_blank\" rel=\"noopener\" download\u003eDownload Datasheet – PIDMaxwell Product Catalog (PDF)\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Maxwell","offers":[{"title":"Default Title","offer_id":54440474771774,"sku":"Cable Roll J Type","price":1.12,"currency_code":"USD","in_stock":true}],"url":"https:\/\/azargroup.org\/products\/cable-roll-j-type","provider":"Azar Group","version":"1.0","type":"link"}