How does it work?
• The density is determined by emitting gamma radiation into the material.
     The radiation collides with particles and the Geiger-Mueller detector monitors the amount that has
     rebounded back to the counter. The counts are then converted via a microprocessor into a density.
     Higher density materials result in a greater amount of rebounds.

• The moisture is determined by emitting neutron radiation into the test material.
     The high energy neutrons are moderated by the collision with hydrogen atoms in the moisture and only
     the low energy neutrons are detected by the Helium 3 detector.

The moisture readings directly off the gauge may be incorrect if other hydrogen atoms are present e.g. Lime or cement present. A bias may be stored in the gauge to correct for the true moisture content by taking six correlation tests.

Nuclear Density / Moisture meter:

What are the benefits?
• Curators know when they have achieved their maximum compaction.
• Wickets can be replicated knowing what the current wicket conditions are and were the target density
  should be.
• Evidence can be provided to players, clubs and umpires on the condition of the wicket . (maximum
  compaction, moisture and bounce, or variability within the wicket).
• Top dressing and other surface treatments can be monitored by changes in maximum compaction
  achieved.
• Soft spots may be determined and concentrated treatment applied, particularly if over-watering occurred
  on a central position.
• Tests are quick (1 minute per reading) with information available for remedial action to occur immediately.
• Tests are non destructive and leave no impressions or holes.
• There is no residue radiation.

Fields of use
• May be used on Cricket wickets, Tennis courts, Bowling greens, or other turf fields

Other Soil testing available
• Particle size analysis
• Atterberg Limits
• pH & Ec
• Hydrometer (clay content)
• Hydraulic conductivity
• Visual assessment of core samples
• Pitch profile information
• Water holding capacity,
• Moisture release curves

Coffey’s can tailor a data collection package to suit your needs and budget. For further information contact;

Melbourne :

Ernie Gmehling – Ph 03 9853 3396 Fax 03 9853 0189 Mob 0403 24 24 79
Email: ernie_gmehling@coffey.com.au

Sydney :

James Russell – Ph 02 9888 7444 Fax 02 9888 9977
Email: james_russell@coffey.com.au