Band and Strip Heaters
Rama®Band and Rama®Strip heaters are computer-designed and verified to Rama standards and customer specifications. Highest quality materials are used in manufacturing to assure long useful service life.
Clamping Rama®Band Heaters
Rama uses extra strength full band clamps, the standard, low-profile design utilizes a 22 gauge stainless steel with continuous strap and spot welded turnover. These provide full strength clamping with minimum heat distortion. In addition, Rama also provides a 90° facing clamp, which is an integral part of the heater sheath, and the pin and-screw clamp, which is spot welded to the heater sheath and does not require a clamping band. These latter two designs are available upon request. All standard designs are supplied with the standard full clamp band.
Clamping/Derating Rama®Strip Heaters
Strip heaters should be firmly clamped to the surface to be heated to prevent expansion or bowing away from the heated surface. Clamping bars 1/4” thick are recommended spaced 3” to 4” apart. When spacing heaters as close as 3/4”, or in close proximity to bright reflective surfaces, reduce wattage by 10%.
Rama® Band Heaters
- Uniform thickness with excellent electrical insulation
- Mica sheets with excellent resistance to moisture
- Precision wound by solid state turn counting winder for high repeat-ability and accuracy
- Uniform heat distribution
High Emissivity Sheath
- Aluminized steel
- Temperature range to 900°F
- Rust resistant
- Approximately .130” thick
- Rugged stainless steel construction
- Design holds heater tightly against cylinder wall to maximize heat transfer
- Standard gap is 1/4”
- UL recognized rating
- Continuous 450°C service
- Standard leadwires are 12”
- Do not bend 1 piece heaters
- To provide close contact with heating surface, tighten clamping bands while taping around the outside of band heaters. After heat-up, occasionally re-tighten the clamping band.
- Match the wattage of band and strip heaters as closely as possible to avoid excessive on/off cycling.
- To tighten post terminals, bottom nut should be held in place while tightening top nut (to avoid putting stress on terminal).
- Avoid spilling oils, grease, water or molten plastic on leadwires, post terminals or ends of heaters.
- Do not pull on leadwires with a force exceeding 15 lbs.
- Make sure strip heaters fit in close contact with surface to be heated, using clamping bars as required. After heat-up be sure heater has not expanded or bowed away from surface, retighten as required.
- Select the band heater whose diameter most closely approximates the diameter of your part.
|A||Metal Braid||Same side, each end 3/4” minimum width|
|B||3” Fiberglass Sleeving|
|C||Metal Braid||Single point of exit perpendicular to heater surface 1” minimum width|
|D||3” Fiberglass Sleeving|
|E||Flexible Metal Conduit|
|F||3” Fiberglass Sleeving||Each end of heater on opposite sides 3/4” minimum width|
|H||3” Fiberglass Sleeving||Leadwires exit each end of heater, perpendicular to heater surface 1-1/2” min width and 1-1/2” min dia|
|RAMA®BAND||POST TERMINALS RAMA®BAND RAMA ®STRIP|
|K||Each end 1” min width and 1-1/2” min diameter|
|L||Same end, adjacent; 2” min width|
|M||Same end, tandem, 1” min width and 2” min diameter|
|MOD||LEADWIRES OR POST TERMINALS RAMA®BAND||RAMA®STRIP|
|N||2-piece, identical halves; any leadwire or post terminal configuration min ID 3.0”||N/A|
|P||WYE 3Ø, any leadwire or post terminal except Type C,D, or E||Same|
|Q||1-piece, bendable; any leadwire or post terminal except Type L under 3-1/2” width||N/A|
|R||Dual voltage/wattage; any leadwire or post terminal except Type C,D, or E (consult factory)||Same|
|T||90° facing clamp; any leadwire or post terminal except A,B,F, or G||N/A|
- Standard leadwire length for all band and strip heaters is 12”
- Max ID for 1-piece Rama®Band is normally 14-1/2”; anything over 14-1/2” would be a 2-piece design. Consult factory for longer ID requirements.
- Min ID for 2-piece Rama®Band construction is 3”.
- Standard terminal box dimensions: 1-1/2” wide, 1-1/2” depth at centerline, length may vary based on configuration. Dimensions for heaters with terminal box: Min heater Dia is 3”, min width is 1-1/2” Min Dia for 2-piece construction is 6”.
- Note: The Min Dia may be grater depending on type of terminal used on heater.
- For welded barrel nut clamps the top metal outer sheath must be stainless steel.
- Select heaters with diameters closely matching your cylinder or barrel ; allow a .25” gap between ends to prevent touching when they are clamped.
- Strip heaters under 2” wide have a full fold over.
If your business works with products that require constant heat, it’s essential to find energy-efficient ways to maintain the appropriate temperatures. With different materials with various temperature requirements, it can be hard to choose a heating system that suits the needs of all the products that you’re storing. Fortunately, drum heater kits can help you heat materials in both small and large quantities.
Drum heaters are often used in industrial and commercial businesses to provide the necessary heat to various substances. As a product, drum heaters are used by hundreds of industries and companies around the world. They’re low-cost and lightweight, making them a premium option regardless of your budget.
If you want to learn more about drum heater kits, their applications, and how they may benefit you or your business, explore this product in more detail below!
What is a Drum Heater?
A drum heater is a heating device that provides constant heat to products stored in drums. A drum heater is built to fit around a barrel, and for this reason, they are also often referred to as barrel heaters. So, why do people need to use them?
Traditional forms of heating typically can’t guarantee that materials will remain at a certain temperature, especially if they need to stay at that heat for a significant amount of time. For example, the amount of energy used to keep an entire warehouse warm is much more expensive than what it takes to heat a small drum.
Also, if you own a business that must keep different materials at varying temperatures, it’s not feasible to do so with traditional heating. Drum heating is also often used to reduce viscosity in certain elements. It provides users with the ability to ensure materials remain at an optimum temperature and consistency.
Effective drum heaters will often fit tightly around the container that is being heated, ensuring that the right amount of heat transfers to the materials within it. Some drum heaters can wrap around a specific part of a drum, which means you can use multiple small belt heaters to heat different areas of a container. You can also stack containers on top of one another if you choose to use this type of heater.
Drum heaters can also be used to melt solids and certain types of liquids effectively, reducing their viscosity. This type of heater both melts and insulates materials. Keep in mind; because they provide consistent heat to your drum’s contents, you should not use certain heating conditions with flammable materials.
Fortunately, there isn’t just one type of drum heater. Heating manufacturing companies understand that business owners have different needs. There are several designs and features prevalent in the popular drum heating models available for purchase.
How do Drum Heaters Work?
The exact functions involved in your drum heater will depend on the manufacturer from whom you make your purchase. In most cases, a drum heater fits tightly around a drum or barrel and provides consistent heat to the external components, which then transfers to the materials or liquids held within.
The primary purpose of a drum heater is to provide non-stop heat to your container. In many cases, you can use an adjustable thermostat to control the internal temperature, and thus, the products within it.
Because drum heaters cover the barrel that is being heated, they require less energy to function. Some drum heaters can retain and insulate heat, which prevents unnecessary energy waste. The way that they work will depend on the type of heater that you’re using.
For example, an induction drum heater uses induction energy to heat the products within the drum. It does this by providing heat through currents to the external components of the drum. We’ll explore the different ways that drum heaters provide heat when we analyze the different types of drum heaters available on the market.
Different Types of Drum Heaters
There are various types of drum heaters available for purchase. If you’re looking for a heater that’s suitable for your business or personal needs, it’s essential to consider which one is best for the products that you’re trying to heat.
These are some of the different types of drum heaters available:
Drum Belt Heater
A drum belt heater wraps around a barrel. Its name derives from its appearance; a drum belt heater looks like a belt attached to a drum. It provides heat around the entire center of the unit.
This is a convenient product for those who have multiple small drums to stack on top of one another. You can attach a heater to each drum or connect many drum heaters to a single drum. Most drum belt heaters have a temperature control feature that lets you dictate the amount of heat provided.
Induction Drum Heater
An induction drum heater uses induction heating to provide direct heat to a container. The currents created by the induction heater generate heat on the side of the drum and control the temperature within.
Drum Base Heater
Depending on the type of drum and substance that you’re trying to heat, a drum base heater may be the best option for your circumstances, as it provides heat directly to the base of the drum that you’re using – it sits under the barrel.
Drum Heater Blankets
Insulated drum heater blankets wrap directly around drums to provide temperature-controlled heat. These blankets are extremely flexible and meant to increase heat retention and can fit around multiple container sizes and shapes.
Drum Heater Applications and Use
Drum heaters have a wide variety of applications and purposes. There is a broad range of industries that take advantage of this form of heating. As mentioned previously, drum heaters are typically used for materials stored in both small and massive drums.
Because drum heaters provide various levels of heat, the application possibilities are very extensive. There are hundreds of industries and materials that take advantage of drum heaters; most typically, those who are trying to reduce the viscosity of the substance stored in the drum or container.
Let’s look at a few of the different uses of drum heaters:
The primary purpose of a drum heater is to reduce the viscosity in liquid substances. At a certain temperature, many liquids develop a thickness that can create issues for application and use. Raising the liquid’s temperature can help you avoid associated problems.
This application is very prevalent in a wide variety of industries. For example, waste oil drum heaters and grease drum heaters are common.
Another popular usage of the drum heater involves maintaining the temperature of a specific substance or material. If you have a warehouse or storage facility that is not climate-controlled, a change in temperature may destroy the contents of a container, and thus, waste a lot of time and money. Using a drum heater can help you prevent the negative consequences associated with a temperature change.
Certain substances and resins can quickly become contaminated in the wrong conditions. To avoid contamination, many people use drum heaters to maintain the right temperature and prevent unwanted outside materials from entering and infecting the contents. Drum heaters are a small investment when you consider the costs associated with infected materials.
Many business or property owners use drum heaters to prevent hard freezing of certain liquids or substances. If you live in an area that often drops below zero, it’s essential to use a heating mechanism to prevent valuable fluids from freezing.
Not controlling the temperature of a barrel in cold climates may result in damage to your liquids, or the inability to use them when they’re needed. Freeze prevention is particularly critical in colder climates.
Multiple Container Management
If you’re operating a commercial facility that stores or uses multiple liquids that require different levels of heat, it’s essential to ensure that you can control the temperature of individual containers. Drum heater kits are one of the most cost-effective ways of securing your products at the right temperature.
Heating different storage rooms can quickly become expensive and impractical. You also may not be able to achieve the heat that you need to store a specific product properly. Drum heaters are small and lightweight, and they don’t interfere with your ability to store many containers.
You can hold multiple liquids at different temperatures. If you have several containers that need varying levels of heat, drum heaters are a reliable option.
Rama Corporation’s Drum Heaters
At Rama Corporation, we provide drum heaters that serve a variety of purposes and needs. Our products suit any drum, ranging from five gallons to 55 gallons. You can choose between a drum heater that contains an adjustable thermostat or opt for one that does not.
All our drum heaters come with SJOOW cords and the option of Hubbell plugs. At Rama Corporation, our drum heaters are fitted with eyelets and springs that guarantee a close fit to your drum or container, helping to reduce heat loss and providing you with greater control of the temperature applied to the exterior and interior elements of your drum or container.
At present, all our drum heater models are in stock. You won’t have to wait for weeks to obtain the perfect drum heater for your containers and materials!
Get in Touch with Our Team Today
If you’d like to speak with our team about the different types of adjustable temperature drum heaters we can offer, get in touch with us today. With over 70 years of experience in the heating industry, we can help you find the right drum heater for your needs. One of our team members will discuss your requirements and match you with the most appropriate kit for your liquid materials, your facility, and your climate conditions.
We maintain a constant supply of all our drum heater models. If you’re looking to get your hands on a heater soon, we’re an excellent partner to work with and are ready to take your call.
Rama®Band Engineering Guide
- Select heaters with diameters closely matching your cylinder or barrel, allow a gap between ends to prevent touching when they are clamped. Standard gap is 1/4”.
- Calculate the surface area of your cylinder to be heated.
- Using the curves shown, determine the recommended watt density for your operating temperatures. For heaters 2-1/2” or wider decrease watt density by 15%. Decrease watt density by 30% when using “on/off” thermostats instead of solid controllers.
- Multiply surface area by watt density to determine required wattage for your heater.
- Select correct combination of heaters from standard designs.
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