: Air content in fresh concrete is commonly measured in the field using the pressure method. The pressure method is practical for field-testing most concretes.

• Original volume of Air in the sample is determined by the principle of Boyle's Law.
• This Meter (DY-300) quickly determines the percentage of entrained air in freshly mixed concrete. And it as a multi-range feature to accurately measure entrained air up to 9.9% by Digital Measuring System.

1.Technology : Digital Measuring System

• Measuring Target : Air content in freshly mixed concrete
• Measuring Method : Digital Measuring System by Micom(Water filled/Waterless)
• The principle of Measurement: Boyle's Law
• Air pressure sensor : Ceramic pressure cell, Max.200.0kPa
• Air pressure Resolution : 0.1kPa
• Measuring Range(Air content) : 1>0.0%∼9.9% 2>0.00%∼9.99%(Selectable)
• Accuracy(Air content) : (@20°C) 1>±0.1% 2>±0.01%
• Resolution(Air content) : 0.1% / 0.01%
• Measuring Temperature : 0°C∼70°C
• Temp accuracy : ±0.1°C
• Operating Temp/Humidity : 0°C∼50°C / 80% RH (Relative Humidity)
• Air content Calibration : 2 points (0%-Zero / 4.5%-Span)
• I.P Line : 1>Case A : Water filled-100kPa 2>Case B: Waterless-98kPa
• Air meter Bowl : 7L,Lightweight cast aluminum alloy,6.7kg
• Compressor(compressed air pressure): Automatic pump up the air pressure
  (Compressed air pressure system by motor-operating: Max.110.0kPa/30 Sec.)
• Display: 128 x 64 LCD Graphic Display
  1>Air pressure: 4 digit
  2>Air content: 2 digit(3 digit:Selectable)
  3>Temperature: 3 digit
• Power Supply: Ni-MH x 8Pcs, rechargeable
• Battery Life: 20 consecutive times use
• Adapter: DC12V/500mA
• Interface: Standard IrDA V1.0 (9,600 BAUD.8 data bit,No parity,1 stop bit)
• DIMS(LxWxH) / Weight: 120x110x 125mm / Abt.8.0kg
• Printer(Thermal): (Option)

2.Accessories :
Strike-off-Toll / Tamping Rod(?16x600mm) / Straight Edge / Rubber Gasket / Syringe for water / Plastic Graduated Cylinder(100ml) / Clamp (C type:4Pcs)/ Tube