PNEG-2174
Sampler - Model GRA
15
4. General Information
System Description
The GRA Sampler is designed to collect a representative sample of granular, flake, pellet, slurry or other
materials in a vertical gravity conveying line.
Sample collection is initiated in response to either an operator’s manual command or a signal
automatically generated by controller logic, usually time-based but which could also be volume or quantity
based. A sample cycle begins when a double-acting pneumatic cylinder pivots the slotted sample cutter
through the product flow to collect a sample of the material. The sample flows through the sample cutter
and out the discharge as it swings through the material flow. The sample cutter, when at rest, is situated
under one of two dust seals that seal the sample cutter. The sample from the sample cutter falls down and
out the 3.00" (76 mm) O.D. discharge tube to the desired sample collection point, at which point an
InterSystems SCS Sample Collection System (optional) may be installed.
Figure 4A Typical Installation, Model GRA Sampling System
Ref #
Description
1
Electrical Conduits
2
Sampler Control Panel
3
Circuit Breaker
4
Directional Control Valve Coils (2)
5
Sample Discharge (Extend to desired collection point)
6
1/2'' NPT Compressed Air Line 80-100 PSI Compressed Air Supply. Requied (By others)
7
Filters/Regulator
8
Dual Coil Solenoid Control Valve
9
Material to be Sampled
