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Thermotron S-8C +155*/-55*C Environmental Chamber 8 Cubic Feet Water Cooled 230V

$1,999.99 $1,799.99
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Product Description

Manufacturer: Thermotron

Model: S-8C

Condition: Used. This chamber is in Fair cosmetic condition. The inside looks clean but has lots of scratches.  The outside is also scratched up and it looks like it may have been repainted  Several places where there were labels, the first layer of paint is peeled off, and several places are chipped through 2 layers of white and some places all the way down to metal (see photo #5).  There is lots of condensation and/or water spot residue in the viewing window.  The door is held very firmly closed by the magnet latch, but the bottom has a gap (top/left photo #5) where you can look in and see the orange of the interior light shine through.  This leaks a little air.  The silicone foam plugs in the side ports are torn and falling apart but still block their holes. The original label from 1995 lists R23 and AZ50 refrigerants, and a label from 2015 says the refrigerant was changed to R-508B, we suspect in the secondary (colder) stage. The photos show the exact item(s) the buyer will receive.

Notes: This chamber is in PARTIAL working condition, it does NOT cool as fast as it should.  The controller is rather confusing because the temperature can be set to a wider range than the over/under temperature limit will allow.  From ambient to -55º took 3 and a half hours.  At -55º the low temperature warning went off.  We set the temperature as high as it would go (180) and the chamber heated very quickly to 175º indicated on the controller - and the 155º alarm went off as the chamber continued heating (see photo #4).  We found that, when changing to intermediate temperatures, the last couple of degrees were only attained after a very slow ramp, and we suspect the tuning of the PID controller could be changed to fix this.  During cooling operations, the outlet water was warm, as expected.  All four of the refrigeration gauges show pressure; we are not sure if the numbers are good. No other testing was done. No manuals, cords/cables, or additional items are included if not listed or shown.


  • (1) Thermotron S-8C Chamber


  • Manufacturer: Thermotron Industries
  • Model: S-8C
  • Environmental chamber
  • Usable volume: 24" x 24" x 24"
  • Temperature range: 155ºC to -55ºC (please read notes)
  • Dual-stage R-23 and R-508B (please read note) Copeland refrigeration
  • Water-cooled refrigeration
  • Stainless steel interior
  • Honeywell DP4200 circular temperature chart recorder
  • Magnetic door lock (no mechanical latch)
  • Power: 208V 3phase 60Hz 22.1A
  • Manufactured: 1995

Works with issues, please read!

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