Heat Detector Capable of Very Cold Environment?

1/13/2021

Does anyone have experience installing a heat detector in a cold environment (~ -40 degrees C or F)?

I'm thinking a rate-of-rise detector would probably be the right type based on what I've read but having problems finding a cut-sheet that supports that operating environment. Normally this type of space would get a dry sprinkler but some things have led to trying to think "outside the box" for this project. Thanks in advance.

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7 Comments

Justin Harrison

1/13/2021 09:10:17 am

Hey there,

I've installed Safe heat detection cable along our branch lines for our Quell systems in a -40 blast freezer but have never done anything with heat detector.

Alex Jenness

1/13/2021 09:14:18 am

Protectowire has a UL and FM linear heat detector that's rated to -40F. System Sensor has their FAAST remote aspirating smoke detector.

Glenn Berger

1/13/2021 09:22:36 am

Depending on what the extreme low temperature you need, I belive that Fenwal "Detect-A-Fire" might work.

Franck

1/13/2021 11:04:07 am

Be careful with detection device (same possible issue with sprinkler heads): if you have some moisture in the air, it may collect at the device location and create an "ice crust" around the device that may prevent its quick and normal operation.

This issue is sometimes found near access doors to the area.

As indicated above, heat detection cables (linear heat detection systems) may be the most appropriate solution in that case.
Possible issue of obstructions of the small openings in the case of an air sampling system if moisture is present in the air, leading to recurrent technical alarms.

Chris D.

1/13/2021 12:22:50 pm

If spot is desired, I would suggest the "302" series by Edward. They are non-intelligent and rated down to -40F. Same concerns as raised by others regarding how linear/ASSD type detection would be acceptable (with ASSD be sure to run the pipe in a warm area with condensate consideration.)

Daniel Garcia

1/13/2021 04:12:25 pm

Just to clarify the temperature is -40 F (worst case). I had Celsius in the question by mistake. Thanks for the suggestions everyone!

Joe Meyer

1/13/2021 04:16:10 pm

I had to look twice when reviewing the question today... I believe -40 C / - 40 F is where the two temperature scales meet. I learn something new everyday.

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