Watlow Electric Heating System Freeflex User Manual

F R E E F L E X ®  
Assures Reliable,  
Efficient Heating and  
Transport of Liquids  
and Gases  
Watlow’s miniature heated polymeric tubing assemblies  
provide a flexible heat-up and transport system for moving  
fluids in tubing as small as 132 inch (0.792 mm) inside  
diameter. FREEFLEX® heats fluids up to 100˚C (212˚F) and  
maintains temperature during transfer from a reservoir to a  
point of use. In some applications, the tubing can actually  
serve as the reservoir for limited volumes of fluid, helping to  
reduce start-up times. For higher temperatures consult the  
factory.  
Features and Benefits  
Flexible heat-up and transport system  
Eliminates the need for heated reservoir systems in  
many applications  
Heating element directly contacts tubing  
Provides fast, efficient more responsive heating  
Three configurations available  
FREEFLEX design - allows tubing to flex, coil or bend  
Watlow’s innovative design places the heating element and  
sensor directly in contact with the perimeter of the tubing to  
produce efficient, responsive heating and temperature control  
of the tube contents. The element is evenly wound to ensure  
reliable, close contact for uniform heating along a portion or  
the entire length of the line. A flexible, durable jacket covers  
the wound element and lets the tubing flex and move in a  
dynamic system. This allows for fluid delivery to multiple  
locations from a single supply source. In stationary  
around system components  
Pre-formed design - allows longer tube length in  
smaller volume  
Molded design - provides a compact heating assembly  
for easy installation  
Integral sensors  
Maintains close control of heater and fluid temperatures  
Low voltage design  
applications, the FREEFLEX heated tubing is conveniently  
routed through available space or around other system  
components. This saves space and provides for an  
Promotes safety  
1
Miniature sizes as small as 32 inch (0.792 mm) inside  
diameter  
Transports and heats fluids in even the smallest spaces  
uncomplicated retrofit in existing systems.  
The superior construction employs an efficient heating  
element design with the ability to incorporate optional  
thermocouple, thermistor or RTD temperature sensors into  
the thermal package. Users can select leads to exit one or  
Convenient retrofit  
Allows for routing flexible tubing around system  
components and using existing control system  
UL® recognition  
®
both ends of the assembly. Typical standard Teflon tubing  
comes in 132-, 116-, 18- or 316-inch (0.792, 1.59, 3.18, 4.76 mm)  
inside diameters, although other sizes and materials  
are available.  
Available on qualified designs by request  
Applications  
Medical: automated clinical analyzers, tissue processing  
equipment  
Analytical: sample preheating for LC and HPLC systems,  
breathalyzers  
Semiconductor processing: wafer drying equipment,  
DI water heating  
COL-FFLX-0505  
2101 Pennsylvania Drive  
Columbia, Missouri 65202 USA  
Phone: +1 (573) 474-9402  
FAX: +1 (573) 474-5859  
Printing: ink jet printers, rapid prototyping systems,  
photolithography  
General Process: wax/paraffin processing and  
non-combustible gas heating  
Water purification systems  
Precision cleaning equipment  
Aerospace  
Teflon® is a registered trademark of E.I. du Pont de Nemours & Company.  
UL® is a registered trademark of Underwriter’s Laboratories, Inc.  
Military  
© 2007 Watlow Electric Manufacturing Company  
 

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