7/27/2023 0 Comments Heating tracingTake a look at the images below to see the variety of options and configurations available. In addition to the cables, these systems allow for customized solutions that incorporate junction boxes, thermostats, temperature controllers, light indicators, and insulation. This AHT cable can be cut-to-length in the field and offers a flexible aluminum jacketed design. Typically, the MI cable is made to order and cannot be cut-to-length in the field.īartec, the premier heat trace manufacturer in Europe who is now in the US market, also offers a medium temperature AHT cable that is capable of reaching 797F. For higher temperatures, most manufacturers offer a Mineral Insulated (MI) Cable that can exceed 1200F. These lower temperature cables (PSB and HSB) are capable of reaching maximum temperatures of 392F. For lower temperatures, a highly flexible cable that appears similar to residential 12-2 wiring is used. For the UTC line of controls, the factory default deadband is 1☌ (1.8☏).ĭifferent controlling parameters are used depending on the piping system involved i.e.: only a control sensor is required on metal pipe whereas an additional high limit sensor is required for plastic pipe protection (see the program code section).Ĭontact Urecon for more info and help with custom design/calculations.įrançais | Español | Site Map | Privacy Policy | | © 2009 Urecon Ltd.Once sized, the proper heat trace cables are selected with the desired wattage outputs and jacketing for the application. Typically, heat will be turned "on" at the setpoint and it will be turned "off" at setpoint + deadband. This temperature range is a function of the controller's deadband. The temperature controller monitors the pipe temperature and ensures that no energy is wasted by maintaining a temperature very close to the setpoint. The installed power capacity must compensate for heat loss through the pipe insulation and include a safety factor. The electric heat tracing must maintain the pipe temperature above 0☌ (32☏) when exposed to the lowest design ambient temperature while at no flow conditions. Further details of this long line tracing system may be found here. Each tracing system is custom designed to suit the application. In the case of long pre-insulated pipelines, it may be advantageous to consider a single or three phase 600V system using fluoropolymer jacketed series type heating cables. All THERMOCABLE® tracing cables and related accessories are rated at 90☌ (194☏) and are CSA certified for wet locations to standard C22.2 number 130. Maximum circuit lengths vary according to the specific cable used and are indicated in Table 3. THERMOCABLE® produces a constant watt output throughout its length and can be conveniently cut to the desired length in the field. A wide variety of cables are available for the tracing of pre-insulated pipes. Their fluoropolymer jacket is moisture proof and its slippery texture lends itself to conduit pulling. ![]() THERMOCABLE® constant watt or “parallel zone” type heat tracing cables are ideally suited for the electric tracing of pre-insulated piping systems. At Ross & Pethtel, we have an inventory of Chromalox heat tracing systems, heating cables, and control packages that can help you keep your operation running. Each system must be specifically designed to suit the parameters at hand. Such systems require substantially more capacity to thaw out pipes within a reasonable time limit. Systems may also be designed for thawing frozen pipes. Heat tracing cables may be installed continuously on water and sewer lines, or only at specific locations which are susceptible to freezing such as road crossings, fire hydrants, shallow bury locations, etc.īecause of the relatively high cost of electrical energy, these systems are usually installed for freeze protection in the event of a prolonged no flow condition. The choice of cable and controls is dependent on the type of pipe being used. THERMOCABLE® heat tracing cables are easily installed and controlled. ![]() These trace conduits are factory applied to the pipes prior to insulating and are tested to ensure that no foam has entered into the conduits during the foaming process. In most cases, a THERMOCABLE® heat tracing cable is pulled into trace conduits in long circuit lengths, after the pipes have been field assembled. ![]() ![]() to prevent freezing), an electric heat tracing system can be used. To compensate for heat losses and to maintain a minimum temperature (i.e.
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