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1、柔性加热器简介 roduction to Flexible Heaters什么是柔性加热器? What is a Flexible Heater?带恒温器的加热带、绳式加热器、环绕式罐体加热器、气瓶加热器和定制加热器。 其柔性加热器是可适合加热对象表面的加热 设备。柔性加热器分为多种类型，包括硅 胶加热器、聚酰亚胺薄膜加热器、加热带、中硅胶柔性加热器具有坚固耐用、可靠精确 以及防潮、耐化学腐蚀等特点。 可轻松粘 合在其它系统零件上。 柔性加热元件具有 可靠、经济、轻薄、耐腐蚀及基本的柔性等 优势，广泛应用于工业、商业和军事领域。A flexible heater is a device whi
2、ch can conform to the surface which requires heating. There are many varieties of flexible heaters which include silicone rubber heaters, Polyimide Film heaters, heating tapes, heating tapes with thermostats, rope heaters,wrap around tank heaters, gas cylinder heaters and custom sizes. Silicone Flex
3、ible Heaters are rugged, reliable, accurate, and moisture and chemical-resistant. They can be easily bonded or adhered to other system parts. Flexible heating elements have a wide range of industrial, commercial, and military applictions where reliability, cost of effectiveness, minimum cross sectio
4、n, resistance to deterioration and basic flexibility are critical.需要了解的重要公式 Important Formulas To Know欧姆定律欧姆定律反映了电压、功率、电流和电阻之间的关系。 要计算恒温器或数字 控制器所控制的负载，有必要了解欧姆定律。 例如，如果选择额定功率为 200 W 的柔性加热器，并使用 120 Vac 电压，则电流为 1.6 AA等于 W/V,其中：A =电流；W =功率；V =电压对于上例， 200 W / 120 Vac = 1.6 A 欧姆定律的其它变体：电压 = 功率 /电流电压 = 电流
5、x 电阻电阻 = 电压 /电流电流 = 电压 /电阻功率 = 电压 x 电流千瓦功率要求要确定加热固体物质所需的功率 (kW)， 应使用以下公式。kW = (W x C x T)/3412 x hTp其中：WT = 材料重量，单位 lbsC = 比热，单位 BTU/lb-Fp T =温升，单位F3412 = 转换系数，单位 BTU/kWhh = 加热时间，单位小时Ohmss LawOhms law shows the relationship between voltage, wattage, amperage, and resistance. It is important to know
6、Ohms law in order to calculate the load you will be switching with your thermostat or digital controller. For example if you select a flexible heater which is rated 200 Watts and apply 120 Vac, the current will be 1.6 AmpsAis equal toW/Vwhere:A= Amperes; W = Wattage; V = VoltageUsing our example abo
7、ve 200 Watts/120 Vac = 1.6 AmpsSome other variation of Ohms Law:Volts = Watts/AmperesVolts = Amperes x OHMSOHMS = Volts/AmperesAmperes = Volts/OHMSWatts = Volts x AmperesKillowatt RequirementTo determine the kW required to be heat up a solid. The following formula is used.kW = (WT x CpX A T)/3412 x
8、hWhere:WT= Weight of Material, lbsCp=specific heat, BTU/lb-FA T = Temperature Rise, F3412= Conversion Factor, BTU/kWhh = heat-up time, hrs柔性加热器选型 FLEXIBLE HEATER SELECTION选择柔性加热器时需要考虑的主要问题包括：需要多大功率？采用多大电压？ 如果应用在平整表面，需要多大尺寸？ 需要多长的加热器导线？ 是否需要恒温器或带传感器的数字控制器？ 最高温度是多少？ 对于平整表面，是否需要绕线式设计或蚀刻金属薄片设计？ 达到所需温度需要
9、多长时间？ 环境温度是多少？ 是否需要绝缘？The key questions which need to be answered before selecting a flexible heater are: How much wattage is required? What voltage will be used? If it is a flat surface, what size will be needed? How long do the heater leads need to be? Will you require a thermostat or a digital co
10、ntroller with sensor? What is maximum temperature? For flat surfaces will require wire wound or etch foil? What is the time required to reach your temperature? What is the ambient temperature? Is insulation being used?用于柔性加热器的温控器和传感器TemperatureControllers and Sensors for Flexible Heaters根据具体应用，有多种温控
11、器和传感器可供选择。 在柔性加热器应用中，较 为常用的一类传感器是表面安装式温度传感器。热电偶、rtd或热敏电阻均 带有背胶或者可粘合到加热的表面。 此外，还有栓接式和磁性表面安装式温 度传感器可供选择。 数字温控器具有不同的规格尺寸，并提供多种输出和输 入选择。 对于热电偶和 RTD 输入，最常配合机械继电器或直流脉冲输出。 使 用直流脉冲输出时，用户可以利用较大的继电器来切换加热器负载。 此外， 还提供多种恒温器，可满足大多数基本应用的需求。There are a variety of temperature controllers and sensors one can use depe
12、nding on the application. One of the more popular sensor types for flexible heater applications are the surface mount temperature sensors. Thermocouple, RTD or Thermistors are available with an adhesive backing or the ability to be cemented to the surface being heated. There also bolt on andmagnetic
13、 surface mount type temperature sensors available. Digital temperature controllers come in many different sizes with many output and input choices. Thermcouple and RTD inputs are the most popular with a mechanical relay or dc pulse output. DC pulse ouputs allow the user to go to a larger relay to sw
14、itch the heater load. Thermostats are also available for the most basic applications.Here is a typical combination of products:以下为典型产品组合：SA IXL Surface TheriFioGoupfcsCNi32 1/32 DIN Programmable Tempcracu re/Proaess GontrolfersMiGA柔性加热器类型 Types of Flexible Heaters硅胶加热器OMEGALUX 硅胶玻璃纤维绝缘柔性加热器可提供更高的热传导
15、率和更快的加热速度，适用于需要 受控加热的狭小区域。 长宽超过 12 (305 mm) 的所有加热器均采用绕线式元件设计。 不同的功 率密度适用于不同的应用： 功率密度 2.5 W/in2 可实现最佳的徐缓加热效果； 对于较好的通用设 备，功率密度为 5 W/in2； 通过 10 W/in2 可实现快速加热和高温，但此时必须进行温度控制，否 则可能会超出 450F (232C) 的最大安全工作温度限值。Silicone Rubber HeatersOMEGALUX silicone rubber fiberglass insulated flexible heaters can improve heat transfer and speed warm-ups w here controlled heating is required in confined areas. =All heaters where both the length and the width dimensions exceed 12 (305 mm) use the wire-wound element design. Effect of power density: gentle w
