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316 SS Inline Duct Heater up to 1000°F and .75 kW Power

T Type air Process Heaters For In-Line Air and Gas Heating

$130.07

Item# AHP-3741

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $130.07
5-9 $123.57
10-24 $120.97
25-49 $115.76
50-99 $113.16
100+ $110.56

In stock

Lead Time (If not in stock): 9 weeks
T Type air Process Heaters For In-Line Air and Gas Heating AHP-3741 AHP-3741
  • 3 /8 ', 1 /2 ' or 3 /4 ' Diameters
  • Exit Air or Gas Temperatures to 1000°F (540°C)
  • Inlet Air or Gas Temperatures to 250°F (121°C)
  • For Horizontal Mounting

AHP-3741 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Power
Power Density
Supply Voltage
Mounting Size
Maximum Outlet Air Temperature
Mounting Style
Sheath Material
Features


APPLICATIONS
The AHP series in-line air heaters are used to heat clean, dry air or gas for baking, drying, laminating, metal working, packaging, plastic welding, preheating, sealing, soldering, shrink fitting and synthetic fabric sewing. AHP series air process heaters provide hot air and gas up to 1000°F (540°C) with infinite control by varying the voltage and/or the air flow. Closed loop control can also be achieved with temperature controllers (section P) and 'T' fittings to mount thermocouples.

MOST POPULAR MODELS HIGHLIGHTED!
Model
Number
Volts Watts Heated Length
in (mm)
Watts/
Inch†
Maximum
CFM
Diameter
in (mm)
NPT
Fitting
Weight
lb (g)
120 VAC Models
AHP-37411202003 1/2 (89)5783/8 (10)1/4'0.18 (82)
AHP-50511204004 1/2 (114)88101/2 (13)3/8'0.25 (113)
AHP-75611207505 1/2 (140)136203/4 (19)3/4'0.68 (308)
120/240 VAC Models*
AHP-3742120
240
50
200
3 1/2 (89)
3 1/2 (89)
14
57
8
8
3/8 (10)1/4'0.18 (82)
AHP-5052120
240
100
400
4 1/2 (114)
4 1/2 (114)
22
80
10
10
1/2 (13)3/8'0.25 (113)
AHP-7562120
240
190
750
5 1/2 (140)
5 1/2 (140)
34
136
20
20
3/4 (19)3/4'0.68 (308)
*These air heaters can be operated on either 120 or 240 Volts. Specifications are shown for operation on
both 120 and 240 Volts.
†Indicates Watts per inch of heated length. Use the table above to determine minimum required flow rates.
The Watts per inch of heated length can be changed by reducing the operating voltage or by ordering a custom
made heater.




Dimensions in Inches (mm)
SeriesDiameterHeated
Length
LAB
AHP-3743/8 (9.5)3 1/2 (88.9)4 (101.6)5/16 (7.9)1 5/16 (33.3)
AHP-5051/2 (12.7)4 1/2 (114.3)5 (127.0)13/8 (34.9)1 3/4 (19.)
AHP-7563/4 (19.1)5 1/2 (139.7)6 (152.4)27/16 (61.9)1 5/8 (41.3)

Maximum Watts Per Linear Inch of Heated Length
Minimum CFM Required3/8' Dia.1/2' Dia.3/4' Dia.
16080120
26080120
4100100120
6150150150
8200200200
10-250250
15--375
20--500

SPECIFICATIONS
Pressure Rating: 80 PSIG
Wattage Tolerance: +5, -10% or better at the voltage specified
Leads: 12 inch long fiberglass insulated leads

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Rated 5 out of 5 by from High Efficiency and great design I've bought several of these because for heating any type of non-reactive gas there really is no substitute or better product available. These have convenient NPT threads on each end (which can be complicated if you want to go to high temperatures which would melt PTFE tape) and are relatively open to allow high flow rate gas streams to pass through. Highly recommended. One tip, don't heat them when there is no flow through them. They tend to burn out easily if you aren't providing cooling power.
Date published: 2016-02-05
Rated 5 out of 5 by from Simple to use and install I purchased one of these for a project a month ago. It was for a piece of test equipment that will require at least three units in parallel. This first unit worked exactly as I expected.
Date published: 2017-11-18
Rated 5 out of 5 by from On time every time Excellent product and outstanding customer service
Date published: 2024-04-12
Rated 5 out of 5 by from Shipped quickly, and just what we needed! Great Product, Shipped quickly, and just what we needed!
Date published: 2023-12-07
Rated 5 out of 5 by from Works as advertised Bought this line heater to heat nitrogen when purging refrigerant systems on aircraft. At 200w I had to use a snubber to slow the flow, but it heats sufficiently for what it is
Date published: 2022-03-12
Rated 5 out of 5 by from Works as expected Works reliably for our process with good heat output
Date published: 2021-05-17
Rated 5 out of 5 by from Well-made heating tube Really nice air heater tube that is very adjustable via voltage input. Very well made. Will use this at lower voltage to heat air going into a microscope environmental chamber. Not what they made it for, but because adjusting voltage works so well, it works fine for me for this purpose.
Date published: 2021-03-01
Rated 4 out of 5 by from Well made but needs a pressure drop spec. Well made heater unit per specs. It would help to add at least one data point at ambient temperature for the pressure drop thru the heater at X SCFM. Everyone knows the dP will go up when the heat is turned on so you do not need to cover this unless you want to. As my application was compressed air and I was using a few in parallel it was not a problem. The linlet max temperature told me I had to run these in parallel to get high a temperature exhaust and that worked out fine.
Date published: 2018-11-02
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loading all QA

How to install Inline heater with Temperature controller?

Asked by: vicky77
Thanks for your question. The AHP-3741 is an in-line air heater with a resistive heating element - powered by 120 vac, and puts out 200 watts of power. A separate controller or thermostat is needed to maintain a constant temperature output. We offer a panel mount controller with built-in relay that can be set at a specific setpoint - part number CNi833. Along with a thermocouple for feedback, this controller can be used to limit the output temperature from the AHP series heater. Our Tech Support engineer has emailed you reference doc with more information on the controller.
Answered by: Jane
Date published: 2022-03-07

What is the pressure rating for this heater? I am looking for something like this for 2500psi N2 gas.

Asked by: A Nony Mouse
Thank you for the inquiry. This heater is rated for 80 psi. Unfortunately we do not offer 2500 psi rated heater. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2023-12-24

Hi, I need something like your inline heater (please see Item# AHP-3741) to heat argon gas to 200 C-- I'm dealing with low flow rates though from 0.5 to 1 L/min Is this something you can help with, particularly off-shelf. Thank you John

Asked by: JB101
Hi John, Thank you for the inquiry. The lowest flow rate for this family of heaters is 1 CFM. These are not compatible with the low flow range you have. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2023-01-13

What is the wire gauge of the leads?

Asked by: Ant1
Thank you for your inquiry Ant1. The wire gauge of the leads is 20 AWG.
Answered by: Application Engineer SP
Date published: 2022-08-04

We plan to use the model AHP-7562 with 208Vac, instead of 240Vac. Would it work correctly? I estimated the output power, the wattage, at 208V to be 560 W, and the current 2.7 A. Is that correct? Do you have technical information with voltage 208V?

Asked by: EHSG
The AHP-7562 can be powered with 208 VAC with a reduced Heat Wattage output. In this case the 560 Watts is what would be expected but Omega does not have any data using the Heater at lower Voltages.
Answered by: Applications Engineer AB
Date published: 2022-01-13

What is the resistance element made of? Is it exposed to the gas flow?

Asked by: extra123
Thank you for your inquiry. The Exposed Resistance Element is (80%Nickel vs. 20%Chromium).
Answered by: Application Engineer CB
Date published: 2022-05-03

Is the AHP-7561 clean enough to use on U.H.V. systems

Asked by: Bubba 12
Thank you for the inquiry. The AHP-7561 is not rated clean for U.H.V. systems. Best regards, OMEGA
Answered by: NORWALKAE_RS
Date published: 2021-08-13

Hello, I am purchasing items to install Inline heater AHP-5051. Please point me in the right direction if I am wrong. Besides the compression fittings, all I need is the temperature controller? I was thinking of the CN32PT-305

Asked by: Anonymous
Thank you for your inquiry. You will also need a thermocouple sensor (i.e TC-K-NPT-U-72), CN32PT-145 controller, SSRDIN280DC10 solid state relay. Fuses are recommended.
Answered by: Application Engineer CB
Date published: 2023-02-24
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Thermocouple T-Fitting
$225.34
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