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Bucan Electric Heating Devices, Inc.
  • Bucan Electric Heating Devices, Inc. Resistance Temperature Detector (RTD) RTD 元件

    热电偶是由两种不同的金属连接在一起构成的。该接头通过一个毫伏输出信号产生一个正温度系数,该信号由温度控制器或高限装置进行解释。Bucan热电偶遵循标准ISA校准,其中J\和K\型校准是工业过程加热最常见的额定值。对于其他校准,请检查工厂。,这两种热电偶结构是矿物绝缘(MI)和管和线,每种结构都具有适合特定工艺应用的特点。,矿物绝缘热电偶(MI):,氧化镁填充物使这种结构具有很大的强度,在苛刻的工艺热环境中需要耐久性和韧性。MI热电偶可以焊接或钎焊在加热元件的护套上;它们可以现场弯曲以适合特殊的安装;它们可以与压缩配件一起工作,并且在法兰或螺旋塞浸入式加热器中使用时能够承受工作压力。,管和线:,这些通常用于塑料工业,可以利用压缩配件或卡口适配器,以便于安装。许多可选的安装配置可满足您的设计需要;这些配置包括卡口安装、可调深度、喷嘴熔化和环形或垫片安装。,电阻温度检测器(RTD),电阻式温度检测器(RTD)有一个电阻,它能随温度改变电阻,并提供比热电偶更好的精度。RTD’还具有更好的稳定性。对于工业过程加热,电阻式温度检测器传感器插入一个管子,看起来像一个管和线热电偶。RTD通常有3根引线;2根红色和1根白色。这使它能够抵消导线电阻和电阻式温度检测器,并在不损失温度精度的情况下延长导线长度。
  • Bucan Electric Heating Devices, Inc. Thermocouples RTD 元件

    A thermocouple is made of two dissimilar metals joined together. This joint creates a positive temperature coefficient with a millivolt output signal that is interpreted by a temperature control, or a high limit device. Bucan thermocouples follow the standard ISA calibration with types J\" and K\" calibrations being the most common ratings for Industrial Process Heating. For other calibrations, please check the factory.","The two thermocouple constructions are mineral insulates (MI) and tube and wire, each having features suited to specific process applications."," Mineral insulated thermocouples (MI):","The magnesium oxide filling gives this construction great strength, durability and a toughness needed in demanding process heat environments. MI thermocouples can be welded or brazed onto the sheath of the heating elements; they can be field-bent to suit specialized mountings; they can work well with compression fittings, and withstand the operating pressures when used in flanged or screw-plug immersion heaters."," Tube and Wire:","These are commonly used in the plastics industry and can utilize compression fittings or bayonet adaptors for mounting ease. Many optional mounting arrangements are available to suit your design needs; these include bayonet mount, adjustable depth, nozzle melt, and ring or shim mounting."," Resistance Temperature Detector (RTD)","An RTD has a resistor that changes resistance with temperature and offers better accuracy than thermocouples. RTD’s also have better stability over time. For Industrial Process Heating the RTD sensor is inserted into a tube and looks like a tube-and-wire thermocouple. The RTD usually has 3 lead wires; 2 red and 1 white. This gives it the ability to negate the lead wire resistance and the RTD and offer you extended lead lengths without loss of temperature accuracy.

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