b'Real-timeThe Fixed Head for Measuring Felt and Felt/Sheet Moisturepermeability profiles present opportunities for cost savings and process control that until now have not been possible.Figure 2. The microwave field generated by this sensor measures a high range of moisture-containing media.applications involve determining theThese instruments are also availablethe machines DCS. A portable version efficiency of uhle boxes and doingwith traversing scanning capability. of this felt scanning unit called the water balances to determine theThese units measure felt moisture,PermFlow DUO is used for manual felt relative contribution of each dewateringpermeability and temperature.traversing. Real-time permeability element. The most common applicationThese EasyScan units are equippedprofiles present opportunities for cost is in reducing vacuum consumption forwith sophisticated 3D felt mappingsavings and process control that until uhle boxes and suction rolls. capability and can be interfaced withnow have not been possible.SHEET CONSISTENCY MEASURING SENSORFor applications that need to measure sheet consistency with high accuracy in open draws or on fabrics such as TAD or Transfer fabrics, there is a third instrument, the SmartScan. This instrument, shown in Figure 3, measures lower moisture values with extreme accuracy. The unit will provide +/- 1 gsm resolution, so that even lightweight sheet consistencies can be measured accurately.In the past, only heavy weight sheets could be measured in open draws because the sensor head had to be in contact with the sheet, and only special cases could tolerate this without Figure 3. A new generation sensor that can measure sheet consistency contactless in openthe risk of sheet breaks. Our new draws with high accuracy. generation technology now allows theWORLD PULP&PAPER 69'