Sentry FLR Sample Cooler

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Configure Your FLR
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The Sentry FLR sample cooler cools a sample from a process stream. It may seem simple, but it is a uniquely designed small tube in a shell heat exchanger. The sample cooler is compact and provides broad application flexibility through the use of a variety of sample tube materials. The sample to be cooled flows through the tube side of the cooler, and the cooling fluid, usually water, flows through the shell side. The cooled sample then is taken to a laboratory for analysis or piped to in-line process instrumentation for continuous monitoring of properties such as conductivity, pH or other chemical constituents.

The Sentry FLR sample cooler is designed for efficient and cost-effective sample cooling where higher flow or low pressure drop is required. It offers optimal service for flows below 3500 cc per minute for single phase and 2000 cc per minute for condensing heat transfer. Standard materials are 316/316L or Alloy 625 for high chloride cooling water applications. Optimized for steam condensing service.


  • Double-wound helical coil design
  • Minimizes cooling water needs
  • Wide variety of exotic alloys for corrosion resistance
  • Retained shellside gasket reduces reassembly time
  • Formed shell eliminates top shell flange weld interfaces
  • Mounting bracket can be installed without removing flange bolts
  • All 316 SS construction available where higher corrosive resistance is desired
More Information
Tube Diameter 3/8 in OD
Process Connections 3/8 in OD Tube
Cooling Water Connections 3/4 in FNPT
Heat Transfer Area 3.5 ft² (0.33 m²)
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