Heat tracing engineering and control panels
Engineering and Design
From heat-loss calculation to the control panel: Pro Therm designs electric heat tracing around your process data and coordinates heating circuits, controls and monitoring for operation.
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Engineering input data
Key inputs include pipe or vessel dimensions, product, maintain temperature, minimum ambient temperature, insulation type and thickness, material, supply voltage, …
Key inputs include pipe or vessel dimensions, product, maintain temperature, minimum ambient temperature, insulation type and thickness, material, supply voltage, hazardous-area classification and project-specific requirements. Heat-up duties additionally require mass, heat capacity and target heat-up time.
Missing input data is identified as an open issue. Assumptions about insulation, minimum ambient temperature or supply voltage directly affect the result and must be confirmed before execution. For existing plants, checking drawings against the actual pipe routing can be as important as the heat loss calculation.
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Circuit and electrical design
Depending on scope, engineering includes circuit grouping, heater lengths, electrical loads, protection devices, sensing, control and connection concepts. Starting …
Depending on scope, engineering includes circuit grouping, heater lengths, electrical loads, protection devices, sensing, control and connection concepts. Starting currents, maximum circuit lengths and practical installation requirements must be considered together.
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Documentation
Deliverables can include heat tracing schedules, technical calculations, connection information, drawings, material summaries, test requirements and project …
Deliverables can include heat tracing schedules, technical calculations, connection information, drawings, material summaries, test requirements and project documentation so engineering, installation and future maintenance share the same information base. Clear circuit identifiers, setpoints, sensor positions and electrical circuit assignments also support future testing. Installation changes should be carried into the final as-built documentation.
A circuit schedule should show which pipe section belongs to each power feed, sensor and control channel. Changes in pipe length, insulation thickness or temperature target are linked to the affected circuit. This keeps the design basis traceable and retains the information needed for future replacement components.
If thermal insulation is to be included, we coordinate its scope with our partner companies. Planning for cabling between our control panels and the power-feed and control boxes includes existing cable routes and connection locations. We can undertake that cabling where cable routes are already available, with the scope clearly described in the quotation.
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Control panels and electrical distribution
Control panels and heating-circuit distribution are designed for each project. Connected loads, protective devices, circuits, identification and documentation are …
Control panels and heating-circuit distribution are designed for each project. Connected loads, protective devices, circuits, identification and documentation are coordinated together. The design and scope of supply are agreed for the project.
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Frequently asked questions
What information is needed for heat tracing design? Typically geometry, process medium, maintain temperature, minimum ambient temperature, insulation and electrical …
What information is needed for heat tracing design?
Typically geometry, process medium, maintain temperature, minimum ambient temperature, insulation and electrical conditions; hazardous-area and heat-up applications require additional data.
Is heat tracing power based only on pipe length?
No. Pipe length alone is insufficient. Diameter, temperatures, insulation, material, environment and other thermal factors determine required output.
Can Pro Therm design for practical field installation?
Yes. Pro Therm deliberately connects engineering with experience from its own installation teams to create field-ready systems.
Can existing heating equipment be reused?
This depends on its condition, electrical data, temperature limits and the revised heating task. A new setpoint or different pipe route can require a new design.
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Related topics
Heat loss and insulation → Controls and monitoring → Control panels →
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Heat loss and required heater output
The first step is to determine the power needed to compensate for heat loss under defined conditions. A suitable heating technology is then selected. The objective is …
The first step is to determine the power needed to compensate for heat loss under defined conditions. A suitable heating technology is then selected. The objective is not maximum installed wattage but a reliable, controllable and technically appropriate system.
Independent manufacturer selection: we take account of your technical specification, preferred manufacturers and budget. Suitable materials may come from Pro Therm's own range or from eltherm, BARTEC, RAYCHEM/Chemelex and Thermon. We agree the construction, scope and budget with you transparently.
04
Hazardous-area engineering
Area classification, temperature class, maximum surface temperatures and suitable system components must align. Project standards and customer specifications are …
Area classification, temperature class, maximum surface temperatures and suitable system components must align. Project standards and customer specifications are integrated into equipment selection and design.
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Control and monitoring
Measurement points, controllers and limiters depend on the heating duty and operating conditions. We agree sensor positions, setpoints, alarms and plant interfaces with …
Measurement points, controllers and limiters depend on the heating duty and operating conditions. We agree sensor positions, setpoints, alarms and plant interfaces with you. Existing systems and the required operator interface inform the design.
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Standards and technical basis
Our knowledge section explains how the standards relate to the heating task, product selection and project design. Open the standards overview →
Our knowledge section explains how the standards relate to the heating task, product selection and project design.
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Clarify the design inputs
Send isometrics, pipe lists, fluid and temperature data, insulation details and power supply information. An incomplete enquiry is also welcome: we identify missing …
Send isometrics, pipe lists, fluid and temperature data, insulation details and power supply information. An incomplete enquiry is also welcome: we identify missing inputs and agree the next design step.
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References & projects
Explore our project reports for electric heat tracing and frost heave protection. View references & projects →
Explore our project reports for electric heat tracing and frost heave protection.
Heat loss and required heater output
The first step is to determine the power needed to compensate for heat loss under defined conditions. A suitable heating technology is then selected. The objective is not maximum installed wattage but a reliable, controllable and technically appropriate system.
Independent manufacturer selection: we take account of your technical specification, preferred manufacturers and budget. Suitable materials may come from Pro Therm's own range or from eltherm, BARTEC, RAYCHEM/Chemelex and Thermon. We agree the construction, scope and budget with you transparently.
Standards reference (checked 14 October 2026): ISO 12241:2022, adopted in Germany as DIN EN ISO 12241:2022-09, provides thermal-insulation calculation rules primarily for steady-state conditions. Heat-up assessment additionally considers stored energy and heat transfer over time.
Circuit and electrical design
Depending on scope, engineering includes circuit grouping, heater lengths, electrical loads, protection devices, sensing, control and connection concepts. Starting currents, maximum circuit lengths and practical installation requirements must be considered together.
Standards reference (checked 14 October 2026): IEC/IEEE 62395-2:2024 addresses system design, installation, maintenance and repair outside hazardous areas. DIN EN 62395-2:2014-12 remains the current German national edition. Record the agreed edition in the project documentation.
Hazardous-area engineering
Area classification, temperature class, maximum surface temperatures and suitable system components must align. Project standards and customer specifications are integrated into equipment selection and design.
Standards reference (checked 14 October 2026): IEC 60079-14:2024 addresses design, selection, installation and initial inspection of electrical Ex installations. Its German adoption is DIN EN IEC 60079-14:2026-02. It supplements general electrical-installation requirements. IEC/IEEE 60079-30-1:2025 and IEC/IEEE 60079-30-2:2025 are international references for resistance trace heating in hazardous areas. Germany still lists DIN EN 60079-30-1:2018-04 and DIN EN 60079-30-2:2018-04 as current national editions. Equipment group, permitted EPL, protection concept and evidence for the actual assembly determine suitability.
Documentation
Deliverables can include heat tracing schedules, technical calculations, connection information, drawings, material summaries, test requirements and project documentation so engineering, installation and future maintenance share the same information base. Clear circuit identifiers, setpoints, sensor positions and electrical circuit assignments also support future testing. Installation changes should be carried into the final as-built documentation.
A circuit schedule should show which pipe section belongs to each power feed, sensor and control channel. Changes in pipe length, insulation thickness or temperature target are linked to the affected circuit. This keeps the design basis traceable and retains the information needed for future replacement components.
If thermal insulation is to be included, we coordinate its scope with our partner companies. Planning for cabling between our control panels and the power-feed and control boxes includes existing cable routes and connection locations. We can undertake that cabling where cable routes are already available, with the scope clearly described in the quotation.