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Threaded Inline Air Heaters
Threaded Inline Heaters are ideal for demanding, high-pressure applications and processes requiring higher inlet temperatures. Serpentine™ heating elements are housed in a 304 stainless steel body that features threaded male NPT connections at both ends. It can achieve exhaust temperatures up to 1400º F and withstand pressures up to 150 PSI. TUTCO SureHeat offer two styles, Style “A” and Style “B” inline air heaters. Style “A” should be used when a leak-proof air system is required. Threaded inline air heaters are commonly connected to filtered compressed air supply lines and rapidly heat air for precise temperature control inline with heated industrial processes.
Product Specs
Maximum Inlet Pressure.........................................................................150 PSI (10 BAR)
Maximum Inlet Air Temperature - Body Style A...........................................900ºF (482ºC)
Maximum Inlet Air Temperature - Body Style B.............................................200ºF (93ºC)
Maximum Exit Air Temperature.................................................................1400ºF (760ºC)
Info
Make sure to properly mount the TC coupling so that the TC is slightly above the ceramic rod running through the center of the Serpentine™ heating element. The open end of the TC should be in the heated air stream.
The inlet side of the heater is located closest to the power feed throughs. Installation orientation is critical. Positioning the heater in the wrong direction will cause damage. Like all Tutco SureHeat heaters, do not operate without the air on.
Notes
- Threaded In-line thermocouple adapter material is 316 stainless steel
- Better resistance to oxidation at higher temperatures
- Type K thermocouple F206119 sold separately
- Use of other sensor types and mounting locations can result in heater damage
- Thermocouple mounting depth location is critical. Follow all mounting instructions.
- If replacing a Thermocouple, take note of the depth by measuring the distance to the compression fitting on the old Thermocouple.
- UL recognized, CE, RoHS
Resources
Additional Information
Closed-Loop (Feedback) Control
Closed-loop heater control systems use a power controller, temperature controller and thermocouple to monitor and provide a constant output temperature, regardless of changes in airflow. The typical temperature controller provides a convenient display of the air temperature. (not the element temperature)
Power Controller
SCR (Silicon Controlled Rectifier) power controls will provide the smoothest power regulation for electric air heaters. Please contact Tutco SureHeat before using other power controllers, such as SSR (Solid State Relays) or other fast-switching controllers.
Temperature Controller
Use only digital temperature controls with Type K thermocouple inputs. The temperature control output must match the input of the power control (i.e., 4-20mA or 0-10VDC). A standard PID-type control with a wide proportional band setting will work best to minimize temperature overshoot. PID parameters may be auto-tuned, but only at temperature specifications below the maximum of the heater. Monitor the heater temperature rise and turn power off immediately if it rises above the heater specification during the auto-tune cycle. Thermocouple Use only a fine wire (0.030” max. wire diameter), exposed junction, Type K thermocouple placed within 1” of the heater exit for accurate temperature readings. Other thermocouple styles, or varying the distance from the heater exit, will result in temperature measurement errors and thus the potential for heater failure