Sentry Model G Automatic Grain Sampler

Part #
Sentry G

The Sentry G automatic cross-cut sampler automates sampling of dry free-flowing materials such as grain, granules, powders, flakes or pellets in vertical or inclined chutes. A cross-cut sampler captures a cross section of an entire material stream and is used in situations where material segregation exists.

To obtain a sample, the Sentry G sampler's air-actuated pelican type head moves across the process flow in the chute and deposits it at the discharge. The material sampled is discharged through a flexible hose to a collection point. Material characteristics are not affected by the sampler because no moving parts convey the material to the sample container. Sample volume can be changed at the sampler controller.


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.


  • Customized to meet various application needs
  • Wetted components are 300 series stainless steel
  • White nitrile seals or gaskets
  • USDA, Canadian, FGIS and NOPA approved
  • Square or round gravity chutes; 2 or 3-inch diameter (51 or 76 mm) discharge tube
  • Designed to eliminate the degradation of sample material
  • No moving parts in conveyance from sampler to container, keeping material characteristics consistent
  • CE and ATEX compliant models available
  • Pneumatic, electric or hydraulic actuation for flexibility
  • Includes air filter, regulator and gauge where applicable
  • Adjustable pelican opening available
  • Optional wear lining in lower transition
  • Optional release coating to ensure a non-stick surface
  • QPQ hardening on contact surfaces available to protect against wear and abrasion
  • Explosion proof (XP) motor available
  • Pre-plumbed filter/regulator and solenoid valve available
More Information
Materials 300 series stainless, Aluminum Cylinder, UHMW-PE, White Nitrile
Particle Size 10 μm - ¼" (6 mm); larger sizes upon request
Process Temperature -10°F to 180°F (-23°C to 82°C)
Maximum Process Pressure ATM
Instrument Air Required 60 to 80 psi, 32 in³ per inch of stroke
The Beginner's Guide to Representative Sampling

Guide to Representative Sampling

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