{"id":4498,"date":"2026-10-01T21:12:04","date_gmt":"2026-10-01T13:12:04","guid":{"rendered":"https:\/\/dzxmetals.com\/case-power-plant-temperature-2\/"},"modified":"2026-10-01T21:12:04","modified_gmt":"2026-10-01T13:12:04","slug":"case-power-plant-temperature-2","status":"publish","type":"post","link":"https:\/\/dzxmetals.com\/de\/case-power-plant-temperature-2\/","title":{"rendered":"Materialien zur Temperaturmessung in Kraftwerken"},"content":{"rendered":"<style>.dzx-case{--dc-blue:#1266b1;--dc-dark:#063d68;--dc-ink:#1e293b;--dc-body:#334155;--dc-pale:#f0f5fa;--dc-border:#d1d5db;--dc-orange:#f9960e;box-sizing:border-box;max-width:1140px;margin:0 auto;color:var(--dc-body);font-family:\"Golos Text\",Arial,sans-serif;font-size:16px;line-height:1.8;overflow-wrap:anywhere;text-align:left}\n.dzx-case *{box-sizing:border-box;min-width:0}\n.dzx-case p{margin:0 0 18px;line-height:inherit}\n.dzx-case p:last-child{margin-bottom:0}\n.dzx-case 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.dc-overview .dc-med-intro{padding:18px 20px}.dzx-case .dc-case-facts{padding:20px;margin-bottom:30px}.dzx-case .dc-gs-pics{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.dzx-case .dc-gs-pics img{height:190px}.dzx-case .dc-app-card{padding:20px}.dzx-case th,.dzx-case td{padding:11px 12px;font-size:13px}.dzx-case .dc-bottom-quote{padding:26px 22px}.dzx-case .dc-bottom-quote .dc-content{display:block}.dzx-case .dc-bottom-inquiry{margin-top:22px}.dzx-case .dc-js-gallery-wrap{padding:24px 20px}.dzx-case .dc-left-pic img{height:240px}.dzx-case .dc-stat-card{padding:18px 10px}.dzx-case .dc-stat-card strong{font-size:23px}}\n@media(max-width:479px){.dzx-case .dc-gs-pics{grid-template-columns:1fr}.dzx-case .dc-gs-pics img{height:230px}.dzx-case .dc-content-bg{padding:23px 17px}.dzx-case .dc-faq summary{padding:18px 4px}.dzx-case .dc-faq-answer{padding-left:18px}.dzx-case table{min-width:300px}.dzx-case .dc-overview tbody th{width:38%}.dzx-case .dc-media-stack table{min-width:460px}.dzx-case .dc-quote-title{font-size:22px}.dzx-case a.dc-bottom-inquiry{display:block;text-align:center}}<\/style>\n<article class=\"dzx-case\" aria-label=\"Temperature Measurement Materials for Power Plants\">\n<div class=\"dc-content-bg dc-overview\">\n<div class=\"dc-content\">\n<h2 class=\"dc-about-h2\"> Case Overview <\/h2>\n<div class=\"dc-med-intro\">\n<p class=\"dc-mb-3\"> During performance testing after a power-plant unit overhaul, the instrumentation team found several main-steam and reheat-steam temperature points reading a few degrees Celsius below the reference instrument. The thermocouples passed laboratory testing and new cables had been installed. Investigation ultimately identified the compensation wire: during maintenance, a section had temporarily been replaced with ordinary copper-core shielded cable. Type K thermocouples require KX compensation wire. The extra thermoelectric voltage produced by copper between the junction-box temperature and the field temperature directly shifted the readings. <\/p>\n<p class=\"dc-mb-3\"> These problems often arise from compatibility across the \u201cthermocouple + compensation wire + cold-junction treatment\u201d chain. DZX supplies matched compensation wire and sheathed thermocouples by thermocouple type, with tolerance-class and insulation-resistance data. Field checks for polarity, cold junctions and shielding are included in the handover checklist to bring measurement deviations under control. <\/p>\n<\/div>\n<section class=\"dc-case-facts\" aria-label=\"Project details\">\n<div class=\"dc-row dc-py-md-3 dc-justify-content-center\">\n<div class=\"dc-col-md-10\">\n<div class=\"dc-card-box\">\n<p class=\"dc-mb-2\"> This case summarizes the application requirements, materials supplied by DZX and delivery value. For case-specific technical data, please contact our engineering team. <\/p>\n<div class=\"dc-table-wrap\">\n<div class=\"dc-table-responsive\" role=\"region\" aria-label=\"Case study data table\" tabindex=\"0\">\n<table class=\"dc-table dc-table-striped dc-ke-zeroborder\">\n<tbody>\n<tr>\n<th scope=\"row\"> Client Profile <\/th>\n<td> Power-plant thermal instrumentation maintenance and service provider <\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"> Application <\/th>\n<td> Main-steam and reheat-steam temperature points; auxiliary bearing temperatures; flue-gas and air\/pulverized-fuel system measurement <\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"> Materials Supplied <\/th>\n<td> Type K\/N thermocouple wire, KX\/NX compensation wire and sheathed thermocouples <\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"> Supply Forms <\/th>\n<td> Coiled compensation wire, sheathed cable and alloy wire <\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"> Key Requirements <\/th>\n<td> Wire matched to the thermocouple type; correct polarity; compliant insulation resistance and tolerance class <\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"> Delivery Arrangement <\/th>\n<td> Standard sizes stocked; sheathed constructions and special protection tubes confirmed against the production schedule <\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"> Project Region <\/th>\n<td> Northwest China <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<\/div>\n<div class=\"dc-content-bg\">\n<div class=\"dc-content\">\n<h2 class=\"dc-about-h2\"> Our Solution <\/h2>\n<ul class=\"dc-item1\">\n<li><strong> Type matching<\/strong>: select KX, NX or other matching compensation wire according to the thermocouple type; do not extend with ordinary copper cable. Mark polarity at the junction box to prevent reversed connections after maintenance. <\/li>\n<li><strong> Cold junctions and shielding<\/strong>: place terminals in an isothermal zone where possible and ground the shield at one end. Check insulation resistance section by section on long runs to reduce drift from moisture and interference. <\/li>\n<li><strong> Sheathed construction selection<\/strong>: grounded (G2) junctions offer fast response and good interference resistance for most routine points. Ungrounded (U2) junctions suit locations with ground loops or interference from multiple ground connections. Recommend bending radius and insertion depth for each operating condition. <\/li>\n<li><strong> Acceptance support<\/strong>: supply thermocouple type, tolerance class and insulation-resistance data, together with pre- and post-calibration site records, to locate deviations within the measurement chain. <\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"dc-content-bg\">\n<div class=\"dc-content\">\n<div class=\"dc-row dc-py-md-2 dc-justify-content-center\">\n<div class=\"dc-col-md-10\">\n<div class=\"dc-gs-pics\">\n<figure><img alt=\"Thermocouple alloy wire\u2014Type K \/ N, Class 1 tolerance\" src=\"https:\/\/www.dzx-metal.com\/products\/1-12-1-thermocouple-wire_01b.webp\" loading=\"lazy\" title=\"Thermocouple alloy wire\u2014Type K \/ N, Class 1 tolerance\" decoding=\"async\"><figcaption> Thermocouple Alloy Wire <br \/> Type K \/ N, Class 1 tolerance <\/figcaption><\/figure>\n<figure><img alt=\"Thermocouple compensation wire\u2014matched KX \/ NX types\" src=\"https:\/\/www.dzx-metal.com\/products\/1-12-2-thermocouple-extension-wire_01b.webp\" loading=\"lazy\" title=\"Thermocouple compensation wire\u2014matched KX \/ NX types\" decoding=\"async\"><figcaption> Thermocouple Compensation Wire <br \/> Matched KX \/ NX types <\/figcaption><\/figure>\n<figure><img alt=\"Sheathed thermocouple cable\u2014G2 \/ U2 constructions\" src=\"https:\/\/www.dzx-metal.com\/products\/1-12-4-mineral-insulated-thermocouple-cable_01b.webp\" loading=\"lazy\" title=\"Sheathed thermocouple cable\u2014G2 \/ U2 constructions\" decoding=\"async\"><figcaption> Sheathed Thermocouple Cable <br \/> G2 \/ U2 constructions <\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"dc-about-h2\"> Technical Specifications <\/h2>\n<p class=\"dc-mb-2\"> Common compensation-wire and sheathed-thermocouple combinations: <\/p>\n<div class=\"dc-table-wrap\">\n<div class=\"dc-table-responsive\" role=\"region\" aria-label=\"Case study data table\" tabindex=\"0\">\n<table class=\"dc-table dc-table-striped dc-ke-zeroborder\">\n<thead>\n<tr>\n<th scope=\"col\"> Wire Type <\/th>\n<th scope=\"col\"> Matching Thermocouple <\/th>\n<th scope=\"col\"> Temperature Resistance <\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td> KX (for Type K) <\/td>\n<td> Thermoelectric characteristics matched to Type K thermocouples <\/td>\n<td> Generally \u2264400\u2103 (wire itself) <\/td>\n<\/tr>\n<tr>\n<td> NX (for Type N) <\/td>\n<td> Thermoelectric characteristics matched to Type N thermocouples <\/td>\n<td> Generally \u2264400\u2103 (wire itself) <\/td>\n<\/tr>\n<tr>\n<td> JX \/ EX and others <\/td>\n<td> Select for the corresponding thermocouple type <\/td>\n<td> Confirm by model <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p class=\"dc-mb-2\"> Common acceptance items (assessed against GB\/T 16839.1-2018 and product specifications): <\/p>\n<div class=\"dc-table-wrap\">\n<div class=\"dc-table-responsive\" role=\"region\" aria-label=\"Case study data table\" tabindex=\"0\">\n<table class=\"dc-table dc-table-striped dc-ke-zeroborder\">\n<thead>\n<tr>\n<th scope=\"col\"> Item <\/th>\n<th scope=\"col\"> Requirement <\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td> Tolerance class <\/td>\n<td> Class I \/ Class II (Type K Class I: \u00b11.5\u2103 or \u00b10.4%|t|, whichever is greater) <\/td>\n<\/tr>\n<tr>\n<td> Insulation resistance <\/td>\n<td> Sample inspection according to sheath and operating conditions; moisture-affected components require retesting <\/td>\n<\/tr>\n<tr>\n<td> Measuring-junction construction <\/td>\n<td> Grounded (G2) \/ ungrounded (U2), selected for operating conditions <\/td>\n<\/tr>\n<tr>\n<td> Sheath and protection tube <\/td>\n<td> Material, outside diameter and wall thickness to drawing; bending radius must meet installation requirements <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"dc-content-bg\">\n<div class=\"dc-content\">\n<h2 class=\"dc-about-h2\"> Delivery and Quality Support <\/h2>\n<ul class=\"dc-item1\">\n<li><strong> Supplied documentation<\/strong>: material certification and thermocouple type\/tolerance-class data; batch insulation-resistance sampling records available. <\/li>\n<li><strong> Site support<\/strong>: wiring polarity, cold-junction position and shield grounding can be checked individually during handover. <\/li>\n<li><strong> Deviation traceability<\/strong>: investigate abnormal readings section by section in this order: thermocouple body\u2014compensation wire\u2014cold junction and terminals\u2014instrument, to locate the cause quickly. <\/li>\n<li><strong> Spare-parts recommendation<\/strong>: retain same-batch spares for critical measurement points to support comparisons and checks after replacement. <\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"dc-content-bg\">\n<div class=\"dc-content\">\n<h2 class=\"dc-about-h2\"> Customer Feedback <\/h2>\n<p class=\"dc-mb-2\"> The instrumentation team focused on three practical issues: whether wire type and polarity were marked at delivery; whether sheathed assemblies could be installed immediately on arrival (bending radius and sheath dimensions); and whether deviations could quickly be identified as material or wiring problems. We incorporated these into supply and handover: marking type and polarity, confirming sheath and bend requirements to drawing, and recommending a sectional troubleshooting sequence to reduce repeated field disassembly. <\/p>\n<\/div>\n<\/div>\n<div class=\"dc-content-bg\">\n<div class=\"dc-content\">\n<h2 class=\"dc-about-h2\"> Our Capabilities <\/h2>\n<p class=\"dc-mb-2\"> Jiangsu DZX Technology Co., Ltd., based in Changzhou, operates a self-owned factory of 12000+ square meters with melting, wire drawing and finishing lines. Its core team has worked with precision alloys and thermocouple materials since 2002, serving 1500+ business customers. Products undergo incoming, in-process and final inspection under the ISO9001 system. Bring your measurement-point list to our engineering team for selection of thermocouple wire, compensation wire and sheathed assemblies. <\/p>\n<\/div>\n<\/div>\n<div class=\"dc-content-bg\">\n<div class=\"dc-content\">\n<h2 class=\"dc-about-h2\"> Related Products <\/h2>\n<ul class=\"dc-item1\">\n<li><a href=\"https:\/\/dzxmetals.com\/product\/extension-and-compensation-cable\/\"> Thermocouple Compensation Wire Product Page <\/a> (KX\/JX\/EX specifications and parameters) <\/li>\n<li><a href=\"https:\/\/dzxmetals.com\/product\/mineral-insulated-thermocouple-cable\/\"> Mineral-Insulated Thermocouple Cable (MI Cable) Product Page <\/a><\/li>\n<li><a href=\"https:\/\/dzxmetals.com\/product\/#Thermocouple-Alloys\"> Thermocouple Alloys Overview <\/a><\/li>\n<li><a href=\"https:\/\/dzxmetals.com\/category\/applications\/energy-power-generation\/\"> Alloys for Energy Applications <\/a><\/li>\n<li><a href=\"https:\/\/www.dzx-metal.com\/news-thermocouple-power-plant.html\" target=\"_blank\" rel=\"noopener\"> Further Reading: Matching Thermocouple Wire and Compensation Wire in Power-Plant Temperature Measurement <\/a><\/li>\n<li><a href=\"https:\/\/www.dzx-metal.com\/news-thermocouple-extension-wire.html\" target=\"_blank\" rel=\"noopener\"> Further Reading: Thermocouple Compensation Wire Selection Guide <\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"dc-content-bg dc-faq-sec\">\n<div class=\"dc-content\">\n<h2 class=\"dc-about-h2\"> Frequently Asked Questions <\/h2>\n<div class=\"dc-row dc-py-md-3 dc-justify-content-center\">\n<div class=\"dc-col-md-10\">\n<div class=\"dc-card-box\">\n<div class=\"dc-accordion\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/FAQPage\">\n<details class=\"dc-faq\" itemscope=\"\" itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary>\n<h3 itemprop=\"name\"> Can ordinary copper-core cable replace compensation wire? <\/h3>\n<\/summary>\n<div class=\"dc-faq-answer\" itemscope=\"\" itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<div itemprop=\"text\"> No. Compensation wire uses alloys matched to the thermocouple&#8217;s thermoelectric characteristics, such as KX for Type K. Ordinary copper cable generates additional thermoelectric voltage between the junction-box temperature and field temperature, directly adding to the measurement. One common field fault is temporary replacement with copper-core shielded cable during maintenance, followed by failure to restore the correct wire. <\/div>\n<\/div>\n<\/details>\n<details class=\"dc-faq\" itemscope=\"\" itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary>\n<h3 itemprop=\"name\"> What should be checked first when thermocouple readings are too low or too high? <\/h3>\n<\/summary>\n<div class=\"dc-faq-answer\" itemscope=\"\" itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<div itemprop=\"text\"> Follow the measurement chain. First verify that compensation-wire type and polarity match the thermocouple (reversed polarity produces twice the deviation). Next check that the terminal cold junction is in an isothermal zone and that terminals are neither oxidized nor loose. Finally check insulation resistance (moisture or sheath damage can cause drift) and whether the sheathed measuring junction is grounded in a loop. The thermocouple itself is often the last component to suspect. <\/div>\n<\/div>\n<\/details>\n<details class=\"dc-faq\" itemscope=\"\" itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary>\n<h3 itemprop=\"name\"> How should G2 and U2 sheathed thermocouples be selected? <\/h3>\n<\/summary>\n<div class=\"dc-faq-answer\" itemscope=\"\" itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<div itemprop=\"text\"> G2 has its measuring junction welded to the sheath (grounded), providing faster response and good interference resistance for most routine points. U2 keeps the measuring junction isolated from the sheath (ungrounded), avoiding ground-potential loops where ground loops or multiple grounding points cause interference. High-vibration points also require attention to sheath material and support arrangements. <\/div>\n<\/div>\n<\/details>\n<details class=\"dc-faq\" itemscope=\"\" itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary>\n<h3 itemprop=\"name\"> How are tolerance Classes I and II selected? <\/h3>\n<\/summary>\n<div class=\"dc-faq-answer\" itemscope=\"\" itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<div itemprop=\"text\"> Use GB\/T 16839.1-2018 (identical adoption of IEC 60584-1). For Type K, Class I tolerance is \u00b11.5\u2103 or \u00b10.4%|t|, whichever is greater; Class II is \u00b12.5\u2103 or \u00b10.75%|t|. Control loops and performance-assessment points generally use Class I; monitoring points can use Class II. Selection should also account for calibration intervals and field drift management. <\/div>\n<\/div>\n<\/details>\n<details class=\"dc-faq\" itemscope=\"\" itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary>\n<h3 itemprop=\"name\"> How are minimum order quantities, sampling lead times and acceptance arranged? <\/h3>\n<\/summary>\n<div class=\"dc-faq-answer\" itemscope=\"\" itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<div itemprop=\"text\"> Small trial batches are available. Minimum quantities are confirmed individually by model and form (compensation wire, sheathed cable or alloy wire). Sheathed constructions and special protection tubes should first be sampled for confirmation. Sampling typically takes one to two weeks depending on scheduling. Standard acceptance includes material certification and thermocouple type\/tolerance-class data. Batch insulation-resistance and visual sampling, or third-party testing, can be agreed. For pricing and delivery, please <a href=\"https:\/\/dzxmetals.com\/contact-us\/\"> contact the manufacturer <\/a> for a quotation based on the actual specifications. <\/div>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"dc-content-bg\">\n<div class=\"dc-content\">\n<h2 class=\"dc-about-h2\"> More Successful Cases <\/h2>\n<div class=\"dc-row dc-py-md-3 dc-justify-content-center\">\n<div class=\"dc-col-md-10\">\n<div class=\"dc-row\">\n<div class=\"dc-col-md-6 dc-col-lg-6 dc-mb-3\">\n<div class=\"dc-app-card\">\n<h3> Boiler Superheater Replacement <\/h3>\n<p> TP304H \/ TP347H and Incoloy 800H tubes <\/p>\n<p><a class=\"dc-more\" href=\"https:\/\/dzxmetals.com\/case-energy-industry\/\"> View Case \u2192 <\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"dc-col-md-6 dc-col-lg-6 dc-mb-3\">\n<div class=\"dc-app-card\">\n<h3> Qualification of Superheater Protection for Incinerators <\/h3>\n<p> Inconel 625 overlay welding and thermal-spray wire <\/p>\n<p><a class=\"dc-more\" href=\"https:\/\/dzxmetals.com\/case-waste-to-energy\/\"> View Case \u2192 <\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"dc-col-md-6 dc-col-lg-6 dc-mb-3\">\n<div class=\"dc-app-card\">\n<h3> Structural Materials for Precision Instruments <\/h3>\n<p> Invar36 strip and plate with measured CTE <\/p>\n<p><a class=\"dc-more\" href=\"https:\/\/dzxmetals.com\/case-precision-instruments\/\"> View Case \u2192 <\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"dc-col-md-6 dc-col-lg-6 dc-mb-3\">\n<div class=\"dc-app-card\">\n<h3> 4J29 Kovar Alloy for Glass Sealing in Vacuum Devices <\/h3>\n<p> Batch-measured expansion and wet-hydrogen annealing support <\/p>\n<p><a class=\"dc-more\" href=\"https:\/\/dzxmetals.com\/case-glass-sealing\/\"> View Case \u2192 <\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p class=\"dc-mb-0 dc-mt-2\"><a href=\"https:\/\/dzxmetals.com\/category\/case-studies\/\"> View All Successful Cases \u2192 <\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"dc-content-bg dc-ref-sec\">\n<div class=\"dc-content\">\n<div class=\"dc-content-box3\">\n<h2 class=\"dc-about-h2\"> References <\/h2>\n<\/div>\n<div class=\"dc-row dc-py-md-3 dc-justify-content-center\">\n<div class=\"dc-col-lg-10\">\n<div class=\"dc-ref-card\">\n<ol class=\"dc-ref-list\">\n<li><span class=\"dc-ref-name\">IEC 60584-1:2013\u201cThermocouples \u2014 Part 1: EMF specifications and tolerances\u201d<\/span><span class=\"dc-ref-desc\"> Specifies reference functions and tolerances for letter-designated thermocouples (Type K Class I: \u00b11.5\u2103 or \u00b10.4%|t|, whichever is greater). <\/span><a class=\"dc-ref-link\" href=\"https:\/\/webstore.iec.ch\/en\/publication\/2521\" target=\"_blank\" rel=\"nofollow noopener\"> View Source <\/a><\/li>\n<li><span class=\"dc-ref-name\"> GB\/T 16839.1-2018: Thermocouples\u2014Part 1: EMF Specifications and Tolerances <\/span><span class=\"dc-ref-desc\"> Adopts IEC 60584-1:2013 and specifies reference characteristics and tolerance classes; a principal basis for thermocouple incoming acceptance. <\/span><a class=\"dc-ref-link\" href=\"http:\/\/219.144.196.30\/Standard\/StdDetail.aspx?catalogid=2372528\" target=\"_blank\" rel=\"nofollow noopener\"> View Source <\/a><\/li>\n<li><span class=\"dc-ref-name\"> GB\/T 4989-2013: Extension and Compensating Cables for Thermocouples <\/span><span class=\"dc-ref-desc\"> Specifies compensation-wire classification, marking, tolerances, insulation, sheath and shielding requirements. <\/span><a class=\"dc-ref-link\" href=\"https:\/\/openstd.samr.gov.cn\/bzgk\/std\/newGbInfo?hcno=49CF403B21D1CCABBB329E434D6F8363\" target=\"_blank\" rel=\"nofollow noopener\"> View Source <\/a><\/li>\n<li><span class=\"dc-ref-name\"> GB\/T 4990-2010: Alloy Wires for Extension and Compensating Cables of Thermocouples <\/span><span class=\"dc-ref-desc\"> Specifies grade, chemistry and thermoelectric requirements for KX, NX, EX and other compensation-wire alloys. <\/span><a class=\"dc-ref-link\" href=\"https:\/\/openstd.samr.gov.cn\/bzgk\/std\/newGbInfo?hcno=E3C400470DB97F8A206532E619DF58F1\" target=\"_blank\" rel=\"nofollow noopener\"> View Source <\/a><\/li>\n<li><span class=\"dc-ref-name\">ASTM E230\/E230M\u201cStandard Specification for Temperature-Electromotive Force (emf) Tables for Standardized Thermocouples\u201d<\/span><span class=\"dc-ref-desc\"> EMF-temperature reference tables for thermocouple types, standard\/special tolerances, and extension- and compensation-wire tolerances. <\/span><a class=\"dc-ref-link\" href=\"https:\/\/store.astm.org\/e0230_e0230m-17.html\" target=\"_blank\" rel=\"nofollow noopener\"> View Source <\/a><\/li>\n<li><span class=\"dc-ref-name\">ASTM E235\/E235M-23\u201cStandard Specification for Type K and Type N Mineral-Insulated, Metal-Sheathed Thermocouples\u201d<\/span><span class=\"dc-ref-desc\"> Specifies sheath dimensional tolerances, grounded (G2)\/ungrounded (U2) measuring-junction construction and insulation-resistance requirements for Type K\/N sheathed thermocouples. <\/span><a class=\"dc-ref-link\" href=\"https:\/\/www.astm.org\/e0235_e0235m-23.html\" target=\"_blank\" rel=\"nofollow noopener\"> View Source <\/a><\/li>\n<\/ol>\n<div class=\"dc-ref-note\"> Data basis: thermocouple types, tolerance classes and insulation requirements come from Jiangsu DZX Technology Co., Ltd.&#8217;s thermocouple and compensation-wire specifications and batch inspection records. Standards are cited from the public documents listed above. Site deviations also depend on wiring, cold junctions and instrument configuration; final performance is governed by site calibration results. <\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<aside class=\"dc-bottom-quote\">\n<div class=\"dc-content\">\n<div class=\"dc-quote-text\">\n<div class=\"dc-quote-title\"> Looking for Reliable Alloy Materials? Get a Manufacturer&#8217;s Quote <\/div>\n<p><span> We provide customized alloy solutions to meet your demanding technical specifications. <\/span> <\/div>\n<p><a class=\"dc-bottom-inquiry\" href=\"https:\/\/dzxmetals.com\/contact-us\/\"> <span> Contact Us <\/span> <\/a><\/p>\n<\/div>\n<\/aside>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>Bei Leistungstests nach der \u00dcberholung eines Kraftwerksblocks stellte das Messteam fest, dass mehrere Hauptdampf- und Zwischen\u00fcberhitzungsdampf-Temperaturmesspunkte einige Grad Celsius unterhalb der Referenzwerte lagen. Die Thermoelemente hatten die Labortests bestanden, und neue Kabel waren verlegt worden. Die Untersuchung ergab schlie\u00dflich, dass der Kompensationsdraht die Ursache war: W\u00e4hrend der Wartungsarbeiten war ein Abschnitt vor\u00fcbergehend durch ein gew\u00f6hnliches, geschirmtes Kupferkabel ersetzt worden. Thermoelemente des Typs K ben\u00f6tigen jedoch einen KX-Kompensationsdraht. Die durch das Kupfer zwischen der Anschlusskastentemperatur und der Feldtemperatur erzeugte zus\u00e4tzliche thermoelektrische Spannung f\u00fchrte direkt zu einer Verschiebung der Messwerte.<\/p>","protected":false},"author":1,"featured_media":2781,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1027],"tags":[1029],"class_list":["post-4498","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-case-studies","tag-power-generationchina"],"acf":[],"_links":{"self":[{"href":"https:\/\/dzxmetals.com\/de\/wp-json\/wp\/v2\/posts\/4498","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dzxmetals.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dzxmetals.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dzxmetals.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dzxmetals.com\/de\/wp-json\/wp\/v2\/comments?post=4498"}],"version-history":[{"count":0,"href":"https:\/\/dzxmetals.com\/de\/wp-json\/wp\/v2\/posts\/4498\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dzxmetals.com\/de\/wp-json\/wp\/v2\/media\/2781"}],"wp:attachment":[{"href":"https:\/\/dzxmetals.com\/de\/wp-json\/wp\/v2\/media?parent=4498"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dzxmetals.com\/de\/wp-json\/wp\/v2\/categories?post=4498"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dzxmetals.com\/de\/wp-json\/wp\/v2\/tags?post=4498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}