Dry sampling - Auger specification

Sampler description

• This sampler enables the extraction of a sample while maintaining the discharge screw rotation speed.

• The PREC 100 sampler has minimal dimensions, presenting a relatively small "footprint" within the process line. It is manufactured parallel to fit exactly each installation. The rugged body has been tested in industries for many years.
  
  

Process line conditions

• Gravity chute for cement, typically at exit from separator

• Flowrate: 50 to 150 tons per hour

• Line diameter: 300 - 800 mm (ø12 - 32" BSP). The section can be circular or rectangular.
  
  

Sampling

• The auger is installed in the centerline of pipe majority of particle sizes are present in the centerline. The variable pitch accelerates the cement caught between slot ends, thus enabling the auger to catch material over the entire slot length.

• The variable auger speed is used to adjust the sample rate to achieve 45 - 65% transmission (reported by size analyzer). Transmission level can then be held constant by varying the speed of auger.

• Pressure balancing standard on all installations (specifically adjusted to suit each individual application)
  
  

Gear motor power

0.250 -1.1 KW / 220 / 380 VAC - 50 Hz, IP 55

Sample volume

724.30cm³ per revolution (100% filling)

Sample flow

• 16660cm³ / minute if N motor = 23rpm

• 39836cm³ / minute if N motor = 55rpm
  
  

Particle size

1-1000 µm measured (Maximum inlet particle is 20 mm)

Diametrical play

1-2 mm for the diameter between the screw and the body

Additional equipment

• Sample container

• Control panel for automatic operation

• Complete sampling system (samples transport, preparation and analysis)
  
  

Options

• Stainless steel for additional anti-abrasive construction

• Variable frequency drive (as shown on picture)

Auger Slot

• Width: 40 mm or 1" 37/64

• Length: Process line specific
  
  

Auger "wetted" parts

• DN 100 (4'') sampler body with opening to extract sample

• ISO / PN 10 flange for fixation on the material vertical tube

• Archimedean variable flight screw with bearing at one end

• Tubular junction at 90° for sample outlet through DN 100 or 4'' pipe