化工专用隔爆热电阻WRE-621 厂家
产品概述
化工专用隔爆热电阻WRE-621是一款专为工业环境下温度测量与控制设计的传感器，适用于存在易燃易爆气体或蒸汽的场所。该产品通过与显示仪表配套使用，可精准测量气体、液体及蒸气的温度，为化工、石油、冶金等行业的自动化控制提供可靠数据支持。其核心部件采用镍铬-铜镍分度号材料，确保在-200℃至+600℃范围内稳定工作，满足不同工况需求。产品设计注重安全性与耐用性，外壳采用高强度铝合金压铸工艺，内部结构优化了热响应速度与绝缘性能，同时具备抗振、防腐蚀等特性。13
核心特点
WRE-621的突出优势在于其防爆设计与工艺可靠性。接线盒采用特殊密封结构，结合橡胶密封圈与精密压铸技术，有效防止内部火花或高温引发外部环境爆炸。热电阻感温元件通过多层绝缘处理，常温绝缘电阻值符合工业要求，即使在湿度较高的环境下也能保持稳定输出。产品支持多种安装方式，包括固定螺纹、法兰连接等，适配不同管道或设备接口，安装时需注意保持接线盒出线口向下以避免污物侵入。此外，其保护管材料可根据介质特性选配，如20号钢或耐腐蚀合金，以延长使用寿命。513
技术参数
该产品测温范围为0~500℃，热响应时间（T0.5）通过严格测试取平均值，确保动态响应快速准确。公称压力下保护管可承受静态外压，实际使用中需结合温度、插入深度及介质工况综合评估承压能力。通过热电阻的测量电流不超过5mA，避免因过载影响精度。外壳防护等级满足防尘防水需求，适合户内外安装。产品在出厂前经过多道工序检验，包括阶跃温度测试与绝缘性能验证，以保证交付质量。618
应用场景
WRE-621广泛应用于化肥、化纤、制药等行业的管道或反应釜温度监测，尤其适用于爆炸等级不高于Ⅱ类B级、引燃温度不低于T4组别的危险区域。其设计避免了强磁场干扰，并可通过接地钢管屏蔽信号传输线路，进一步降低环境干扰风险。用户安装时需遵循电气安全规程，确保外接地可靠，同时定期检查密封件与隔爆面状态，以维持长期性能稳定。1225
Introduction to WRE-621 Explosion-Proof Thermocouple for Chemical Industry
The WRE-621 is a specialized temperature sensor designed for hazardous environments where flammable gases or vapors may be present. It pairs with display instruments to measure and control temperatures of gases, liquids, and steam in industries such as chemical processing, petroleum, and metallurgy. Constructed with nickel-chromium/copper-nickel (Type E) sensing elements, it operates reliably within a range of -200°C to +600°C. Its robust housing, made of high-strength aluminum alloy, ensures durability while optimizing thermal response and electrical insulation. Safety features include a sealed junction box to prevent ignition risks. 24
Key Features
The WRE-621 excels in explosion-proof performance through its precision-engineered junction box with compression seals and corrosion-resistant materials. The thermocouple’s multi-layer insulation maintains stable resistance even in humid conditions. Flexible installation options (threaded or flanged connections) cater to diverse equipment setups. Users are advised to orient the cable entry downward during installation. Protective tubing materials (e.g., carbon steel or alloys) can be selected based on media compatibility for extended service life. 1622
Technical Specifications
With a measurement span of 0~500°C and tested thermal response time (T0.5), the WRE-621 delivers rapid and accurate readings. Its sheath withstands rated pressures under static conditions, though operational limits depend on temperature and insertion depth. The low signal current (<5mA) safeguards against measurement drift. The housing’s ingress protection rating suits both indoor and outdoor deployment. Rigorous factory tests, including step-temperature validation, ensure consistent performance. 2728
Applications
Ideal for pipelines or reactors in fertilizer, pharmaceutical, and chemical plants, the WRE-621 is rated for Zone 1/2 hazardous areas (Group IIB, T4). Its design minimizes electromagnetic interference, and shielded conduit installation is recommended for signal stability. Compliance with electrical safety protocols—such as proper grounding and routine seal inspections—is critical for sustained operation in explosive atmospheres. 1926
化工专用隔爆热电阻
WRR-131，WRR2-131，WRN-230D，WRE-210D，WRN-430D，WRNK-431，WRK-240，WRK-520，WRS-132，WRT-620，WRN-130，WRN-130，WRNK-231，WREK-232，WRE-621A，WZPK-133S，WRN-631，WRE2-235T，WRER2-13，WRPB-230，WRE-621，WRN2-621，WZPM-201S，WZPK2-306SA，WZP-205S，WREK-1315，WRET-01，WZPF-130 WZCF-130 WZPF-430，WRNT-11，WZCM、WZPM，SBW系列，WRR-120，WRR-121，WRP-120，WRP-121，WRN-122，WRN-123，
装配式不锈钢接线盒热电偶WRR-120B，WRR-121B，WRR2-120B，WRR2-121B，WRP-120B，WRP-121B，WRP2-120B，WRP2-121B，WRN-122B，WRN-123B，WRN2-123B，WRR-130B，WRR-131B，WRR2-130B，WRR2-131B，WRP-130B，WRP-131B，WRP2-130B，WRP2-131B，WRN-133B，WRN2-133B，WRN-130B，WRN2-130B，WRE-130B，WRE2-130B，WRN-230B，WRN2-230B，WRE-230B， 表面热电偶温度计WRE2-230B，WRN-220B，WRN-220AB，WRN2-220B，WRN2-220AB，WRE-220B，WRE-220AB，WRE2-220B，WRE2-220AB，WRN-230B，WRN2-230B，WRE-230B，WRE2-230B，WRN-330B,WRN2-330B，WRE-330B，WRE2-330B，WRN-430B，WRN2-430B，WRE-430B，WRE2-430B,WRN-420B，WRN-420AB，WRN2-420B，WRE-420B，WRE-420AB，WRE2-420B，WRN-430B,WRN2-430B，WRE-430B，WRE2-430B，WRN-530B，铠装热电偶WRN2-530B，WRE-530B，WRE2-530B，WRN-631B，WRN2-6310B，WRE-631B，WRE2-631B，WRN-620, WRN-621B，WRN-620A, WRN-621AB，WRN2-620, WRN2-621B，WRE-621B，WRE-621AB，WRE2-621B，WRN-631B，WRN2-631B，WRE-631B，表面热电偶WRE2-631B，WRN-624B，WRN-625B，WRE-624B，WRE-625B，WRN-420B，WRN-430B，WRN2-420B，WRN2-430B，WRE-420B，WRE-430B，WRE2-420B，WRE2-430B，WRN-420C，WRN-430C，WRN2-420C，WRN2-430C，WRE-420C，WRE-430C，WRE2-420C，WRE2-430C，WRN-420D，小接线盒铠装热电偶WRN-430D，WRN2-420D，WRN2-430D，WRE-420D,WRE-430D，WRE2-420D，WRE2-430D，WZP-420B，WZP-421B，WZP -430B，WZP-431B,WZP2-420B，WZP2-421B，WZP2-430B，WZP2-431B，WZC-420B，WZC-430B，WZP -420C,WZP -421C，WZP -430C，高温耐磨热电偶WZP -431C，WZP2-420C，WZP2-421C，WZP2-430C，WZP2-431C,WZC-420C，WZC-430C，WZP -420D，WZP -421D，WZP -430D，WZP -431D，WZP2-420D，WZP2-421D，WZP2-430D，WZP2-431D，WZC-420D，WZC-430D，WRE-892M，WRE-891M，WRE-890M，WREK-101，WREK-121，WREK-131，WREK-181，WREK-187，WREK-191，WREK-102，WREK-122，WREK-132，铂铑10-铂二等标准热电偶WREK-182，WREK-188，WREK-192，WREK2-121，WREK2-131，WREK2-122，WREK2-132，WRNK-101，WRNK-121，WRNK-131，WRNK-181，WRNK-187，WRNK-191，WRNK-102，WRNK-122，WRNK-132，WRNK-182，WRNK-188,WRNK-192，WRNK2-121，WRNK2-131，WRNK2-122，WRNK2-132，WRCK-101，WRCK-121，WRCK-131，WRCK-181，WRCK-187，吹气型热电偶WRCK-191，WRCK-102，WRCK-122，WRCK-132，WRCK-182，WRCK-188，WRCK-192，WRCK2-121，WRCK2-131，WRCK2-122，WRCK2-132，WREK-201，WREK-221，WREK-231，WREK-281，WREK-291，WREK-202，WREK-222,WREK-232，WREK-282，WREK-292，WREK2-221，WREK2-231，WREK2-222，WREK2-232，WRNK-201，WRNK-221，WRNK-231，WRNK-281，WRNK-291，WRNK-202，WRNK-222，WRNK-232，WRNK-282，WRNK-292，WRNK2-221，WRNK2-231，WRNK2-222，WRNK2-232，WRCK-201, WRCK-221, WRCK-231, 拱顶热电偶WRCK-281, WRCK-291, WRCK-202, WRCK-222, WRCK-232, WRCK-282, WRCK-292. WRCK2-221, WRCK2-231, WRCK2-222, WRCK2-232WREK-301, WREK-321, WREK-331, WREK-381, WREK-387, WREK-391, WREK-302, WREK-322, WREK-332, WREK-382, WREK-388, WREK2-321, WREK2-331, WREK2-322 WREK2-332 ,WRNK-301, 超临界电站用热电偶 WRNK-321, WRNK-331, WRNK-391, WRNK-381, WRNK-387, WRNK-302, WRNK-322, WRNK-332, WRNK-392, WRNK-382, WRNK-388, WRNK2-321, WRNK2-331, WRNK2-322, WRNK2-332, WRCK-301, WRCK-321, WRCK-331, WRCK-391,WRCK-381, WRCK-387, WRCK-302, WRCK-322, WRCK-392, WRCK-382, WRCK-388,WRCK2-321，WRCK2-331，WRCK2-322，WRCK2-332，WREK-401，WREK-421，WREK-431，WREK-481, WREK-491, WREK-402, 电站测温用热电偶WREK-422, WREK-432, WREK-482, WREK-492WREK2-421, WREK2-431, WREK2-422, WREK2-432, WRNK-401, WRNK-421, WRNK-431,WRNK-481, WRNK-491, WRNK-402, WRNK-422, WRNK-432, WRNK-482, WRNK-492,WRNK2-421, WRNK2-431, WRNK2-422, WRNK2-432, WRCK-401, WRCK-421, WRCK-431,WRCK-491, WRCK-481, WRCK-402, WRCK-422, WRCK-432, WRCK-492, WRCK-482,WRCK2-421, WRCK2-431, WRCK2-422, 隔爆型、本安型热电偶WRCK2-432, WREK-501, WREK-521, WREK-531,WREK-581, WREK-591, WREK-502, WREK-522, WREK-532, WREK-582, WREK-592. WREK2-521, WREK2-531, WREK2-522, WREK2-532, WRNK-501, WRNK-521, WRNK-531,WRNK-581，WRNK-591，WRNK-502，WRNK-522，WRNK-532，WRNK-592，WRNK-582，WRNK2-521，WRNK2-531，WRNK2-522，WRNK2-532，WRCK-501，WRCK-521，WRCK-531，WRCK-591，WRCK-581，化工专用隔爆型热电偶WRCK-502，WRCK-522，WRCK-532，WRCK-592，WRCK-582，WRCK2-521，WRCK2-531，WRCK2-522，WRCK2-532，WREK-1313，WREK-1314，WREK-1315，WREK-1316，WREK-1323，WREK-1324，WREK-1325，WREK-1326，WRNK-1313, WRNK-1314, WRNK-1315, WRNK-1316, WRNK-1323, WRNK-1324, WRNK-1325, WRNK-1326, WRFK-281A, WRFK-181A., WRCK-281A, WRCK-181A, WREK-281A, WREK-181A, WRNK-281A, WRNK-181A, WZPM-202U, WZPM-201U, WRNM-202A, WZPM-101U, WZPM-102U, 化工专用热电偶WREM-102A, WRNM-201A, WRNM-203A WRNN-436, WRNN2-436, WRN-420B, WRN-430B, WRN2-420B, WRN2-430B, WRE-420B, WRE-430B, WRE2-420B, WRE2-430B, WRN-420C, WRN-430C, WRN2-420C, WRN2-430C, WRE-420C, WRE-430C, WRE2-420C, WRE2-430C, WRN-420D, WRN-430D, WRN2-420D, WRN2-430D, WRE-420D, WRE-430D, WRE2-420D, 可动式热电偶WRE2-430D, WZP-420B, WZP-421B, WZP-430B, WZP-431B, WZP2-420B, WZP2-421B, WZP2-430B, WZP2-431B, WZC-420B, WZC-430B, WZP-420C, WZP-421C, WZP-430C, WZP-431C, WZP2-420C, WZP2-421C, WZP2-430C, WZP2-431C, WZC-420C, WZC-430C, WZP-420D, WZP-421D, WZP-430D, WZP-431D, WZP2-420D, WZP2-421D, WZP2-430D, WZP2-431D, WZC-420D, WZC-430D.WRR-433Q, WRNR-93UC, WRER-93UC, WRNR2-93UC, WRER2-93UC, WRNT-001, WRNT2-001, 耐腐、耐磨热电偶WRET-001, WRET2-001, WRNR-01, WRER-01, WRNR2-01, WRER2-01, WRNR-12, WRER-12, WRNR2-12, WRER2-12, WRNR-13, WRER-13, WRNR2-13. WRER2-13. WRNR-14, WRER-14, WRNR2-14, WRER2-14, WRNR-15, WRER-15, WRNR2-15, WRER2-15, WRN-15A, WRER-15A, WRNR2-15A, WRER2-15A, WRNT-31, WRET-31, WRNT2-31, WRET2-31, 套管式热电偶WRNK-841n﹡D, WRNK-842n﹡D, WREK-841n﹡D. WREK-842n﹡D, WRNK-841n﹡I, WRNK-842n﹡I, WREK-841n﹡I. WREK-842n﹡I, WREK-842n﹡I, WRN-240A, WRN2-240A, WRE-240A, WRE2-240A, WRN-640A,WRN2-640A,WRE-640A,WRE2-640A, WRN-440A,WRN2-440A, WRE-440A,WRE2-440A, WRNK-240, WRNK2-240, WREK-240, WREK2-240, WRNK-440, WRNK2-440, WREK-440, WREK2-440, WRN-74O,WRN2-74O, WRN-74O, WRN2-74O, WRNR-15, WRNR2-15, WRNR-15A, WRNR2-15A, WRER-15, WRER2-15, WRER-15A, WRER215A, WRN-624, WRN-625, WRE-624, WRE-625, WRNR-12, WRER-12, WRNR2-12, WRER2-12, WRNR-13, WRNR2-13, WRER-13, WRER2-13,WRNR-14, WRNR2-14, WRER14, WRER2-14, WRN-631, WRN2-631, WRNR-01, WRER-01, WRNR2-01, WRER2-01, WRN-130, WRN2-130, WRN-230, WRN2-230, WRN-330, WRN2-330, WRN2-430, WRN-430, WRE-130, WRE2-130,
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