Sentry RB Automatic Strip Sampler

Part #
Sentry RB

The Sentry RB automatic strip sampler automates sampling of dry free-flowing and non-free-flowing materials such as granules, powders, flakes or pellets from gravity chutes and hoppers. The RB takes a sample when a solenoid-controlled air cylinder extends a slotted sampling tube into the process line. A sample collects by a gearmotor-driven auger to the discharge point.

With representative sampling, characteristics of each sample match that of the entire lot or batch—so samples are repeatable, leading to accurate sample analysis data. Automatic sampling ensures a sample can be easily and safely obtained with no need for direct human interface or interference. This ensures sample integrity as well as operator safety.


  • Discharges material during entire sample cycle
  • Sample probe retracts from the line to avoid any restriction in the product flow between sample cycles
  • Rugged Stainless Steel construction
  • Optional sample tube materials for abrasive or non-free-flowing product
  • Standard AC TEFC motor; DC and explosion-proof options available
  • Controllers and remote operating modules available in a variety of configurations 
  • Available in a model that is conformant to ATEX Standards (through third party verification)
More Information
Materials 300 series stainless, Aluminum Cylinder, PTFE, UHMW-PE, White Nitrile
Particle Size 10 μm - ¼" (6 mm)
Process Temperature -10°F to 175°F (-23°C to 79°C)
Motor 1/6 HP TEFC Gearmotor, 90 RPM at 60 Hz
Input Power 115-230 Vac, 1ph, 60 Hz or 110-220 Vac, 1ph, 50 Hz
Maximum Process Pressure Up to 30 psig
Instrument Air Required 60 to 80 psi, 32 in³ per inch of stroke
The Beginner's Guide to Representative Sampling

Guide to Representative Sampling

Learn the many benefits of representative sampling and get answers to your representative sampling questions

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