Design Guide for Hazardous / Industrial
Self-regulating trace heating systems
21-5400-7D0001/-
05/2023-EHT-466854
Notice Technical data subject to change without notice.
No claims for damage arising from alternations, errors or misprints shall be allowed.
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Step 4: Determine the required power rating
Since the power output of self-regulating trace heaters depends on the pipe temperature. the conditions within your application must be consid-
ered when choosing the trace heater:
Determine the maintain temperature (= pipe temperature) of your application and the effective heat loss as calculated in Step 2.
Find the required power output in the graph that contains the trace heater type and voltage you use (see tables on pages 13 to 13).
If the required power output is between 2 trace heater types. choose the one with the higher rating.
If the required power output exceeds the output of the trace heater with the highest rating. you may:
Use 2 or more trace heaters on the same pipe.
Use a thicker insulation or insulation material with a lower thermal conductivity.
Contact your local BARTEC distributor for further assistance.
→ Example
Trace heater family as determined in Step 3: PSB
Power supply voltage: 230 V
Maintain temperature: 25 °C
Effective heat loss: 20.4 W/m
Trace heater that meets the required power output: 10PSB2
25 °C
20.4 W/m
