Selecting an Immersion Heater
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Flow-Through Heaters for Air
Tackle high-temperature drying, shrink-wrapping, and plastic welding jobs with your everyday compressed air supply. These heaters connect to your air source on one end and to your process on the other. Control the output temperature by adjusting the incoming airflow or power sent to the heater. The outlet can point upwards, straight, or as much as 10° downwards. Be cautious when positioning it—pointing it further downwards may damage the heating element.
To calculate the wattage needed for your application, multiply your incoming airflow in CFM by the number of degrees you need to increase air temperature, then divide by three.
Thermocouple probes and thermocouple fittings (both sold separately) allow you to use a temperature controller to operate 240V AC heaters. The probe threads into the fitting to measure your air outlet temperature.
For technical drawings and 3-D models, click on a part number.
Heating Element | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wattage, W | Watt Density | Current, A  | Lg. | Wd. | No. of | Max. Air Input Temp., °F | Max. Air Output Temp., ° F | Max. Input Airflow, cfm | Pipe Size | Thread Type | Gender | Wire Connection Type | Each | |
Ceramic Heating Element with Copper Body | ||||||||||||||
120V AC, Single Phase | ||||||||||||||
| 400 | 89 W/linear in. | 10 | 5" | 1/2" | 1 | 250° | 1,000 | 10 | 1/8 | NPT | Female | Wire Leads | 0000000 | 0000000 |
| 650 | 87 W/linear in. | 10 | 8" | 1/2" | 1 | 250° | 1,000 | 10 | 1/8 | NPT | Female | Wire Leads | 0000000 | 000000 |
| 750 | 136 W/linear in. | 20 | 6" | 3/4" | 1 | 250° | 1,000 | 20 | 1/4 | NPT | Female | Wire Leads | 0000000 | 000000 |
| 1,250 | 132 W/linear in. | 20 | 10" | 3/4" | 1 | 250° | 1,000 | 20 | 1/4 | NPT | Female | Wire Leads | 0000000 | 000000 |
240V AC, Single Phase | ||||||||||||||
| 1,000 | 182 W/linear in. | 25 | 6" | 1 1/4" | 1 | 250° | 1,000 | 50 | 1/2 | NPT | Female | Wire Leads | 0000000 | 000000 |
| 2,500 | 333 W/linear in. | 25 | 8" | 1 1/4" | 1 | 250° | 1,000 | 50 | 1/2 | NPT | Female | Wire Leads | 0000000 | 000000 |
| 4,000 | 348 W/linear in. | 25 | 12" | 1 1/4" | 1 | 250° | 1,000 | 50 | 1/2 | NPT | Female | Wire Leads | 0000000 | 000000 |
Probe | Probe Connection | Cable | ||||||
|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Pipe Size | Thread Type | Gender | Lg., ft. | Material | Each | |
Type J | ||||||||
| 1" | 3/16" | 1/4 | NPT | Male | 6 | Fiberglass | 0000000 | 0000000 |
Air Inlet | Air Outlet | Thermocouple Probe Connection | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Gender | Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Each | |
| 1/2 | Male | 1/2 | NPT | Female | 1/4 | NPT | Female | 0000000 | 0000000 |