Sensor roller CPF with integrated amplifier

Series CPF sensor roller

The sensor roller of CPF series is recommended for the web tension reading during the web processing. An important feature during the web processing is to keep constant the tension of the web. The roller sensor CPF has an high precision in detecting the web tension also because the position of the material on the roller dosen´t affect the reading. The roller is fixed quickly and easily from one side only. The connector could be installed or inside the machine or outside. On request, it is available a version without integrated amplifier and display on the front of the roller.

Why choose CPF: 

  • toughness with overload protection 10 times the nominal load
  • wide range of measurement
  • linear signal even at very low loads
  • quick and easy installation
  • option axial cable output
  • high rollers’ rpm
  • no maintenance
  • the weight of the roll doesn’t affect the reading
  • wide range of table from 300 to 600mm
  • web tension viewing in Kg or Pounds

The sensor roller CPF is made up of a central shaft, that give stability to the cell, and two sensors, that are supportive through ball bearings for the central shaft on one side and for the roller on the other side. The sensors are working with strain gauges in “wheatstone full bridge” configuration. The roller is shifting mechanically when the load is applied modifying the strain gauges on the body of the load cell. The roller can shift up to 0,2 mm. A mechanical stop attend the load cell when reach the end scale, in this way the load cell body doesn’t enervate and can absorb overloads. Tank to the special construction (design), the sensor cylinder can withstand overloads up to 10 times the maximum load and it is stable to the temperature, pressure and humidity changes.

The sensor roller could be installed at any point of the machine (unwinder, pull, rewinder). The wrap angle of the material on the sensor roller can be chosen as desired and according to this angle the force, that will be the nominal load of the CPF, of the material on roller is calculated.