Digital Absolute Permmeter

Model 42105

The Digital Absolute Permmeter is a fully automatic system which measures the permeability of porous sand masses, both in compacted and loose states. Simply place your specimen on the rubber pedestal and press start. With the addition of specifically designed accessories, the Permmeter can also measure the permeability of raw foundry sand, shell coated foundry sand, and refractory coatings that are used in the foundry industry.

Key Advantages:

  • Uses highly sensitive and accurate electronic sensors and digital timers to measure the controlled air volume.
  • The permeability function has been corrected to compensate for any fluctuations in air pressure and eliminate the unit’s own resistance to air passage.
  • Easy to operate and very repeatable; only requires a single touch operation.
  • Can be digitally calibrated by the operator with the purchase of the 42132 permeability standard.
  • Single piece cast aluminum housing, which makes it extremely durable.

 

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When the Permmeter is in the “exploration mode”, the microprocessor determines and compensates for parasitic resistance to the pneumatic circuit created by other measuring devices, such as the Mold Permeability Accessory (Model 42105B) and the Base Permeability Accessory (Model 42105C). This feature enables the identification of permeability of a porous body attached to another porous body, provided that it is possible to previously determine the permeability of one of them. This is the case of permeability of a wash applied to a permeable substrate, for instance, a washed core. The final results are shown in the display, with no need for calculations.

The unit includes an Electro-valve that controls the compressed air flow which fills and therefore raises the gasometric chamber up to a certain height, after which the inlet flow is stopped, and the measuring stage starts.

The absolute determination of permeability is done by measuring the time required for a specific air volume at constant pressure to flow through the specimen or body being tested.

The permeability of either a standard 2 in.  x 2 in. AFS or 50mm x 50mm metric foundry sand specimen can automatically be measured.

COMPONENTS INCLUDED
• Pneumatic Regulator/Filter
• Pneumatic Tubing (Approximately 1 m (3’)
• Pneumatic Fitting (Connects pneumatic tubing to the pneumatic regulator/filter outlet)

ACCESSORIES

Shell Permeability Accessory - Model 42105A
Mold Permeability Accessory - Model 42105B
Base Permeability Accessory - Model 42105C
Additional Permeability Accessory - Model 42105D

FULL DESCRIPTION

AFS: Part # 0042105-ASM
Metric: Part # 0042105-M-ASM
   

SAND CASTING PROCESS

Process: Clay Bonded Sand
  Cold Box
  Core Oil
  Hotbox/Warmbox

Nobake/Air-set
  Shell/Croning

 

REPLACEMENT PARTS

Rubber Pedestal Part Number: 0046034

CALIBRATION

Permeability Standard

Calibration Services

SPECIFICATIONS

    
 Part Number:  0042105-ASM 0042105-M-ASM
 Compressed Air:  6 bar (90 psi) 6 bar (90 psi)
 Power Requirements:  100-240 Volts, 50/60 Hz 100-240 Volts, 50/60 Hz
 Length:  10.25" / 260mm 10.25" / 260mm
 Width:  14.25" / 362mm 14.25" / 362mm
 Height:   20.5" / 521mm 20.5" / 521mm
 Weight:  48lb / 21.8kg 48lb / 21.8kg

 

MANUAL

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