Gamma Backscatter Sensors

The Gamma Backscatter (GBS) Gauge can handle a wide range of applications, with a measurement range of 5gsm to 25000gsm.

The GBS sensor works under the principle of Compton photon backscatter and consists of a photon emitter, a crystal to convert photons to light energy, a photo-multiplier and supporting electronics. The entire sensor weighs less than 3 pounds, and its single-sided operation allows the use of a less-expensive scanner.

Since the sensor's isotope has a very long, stable half-life, the gauge does not require standardization, making it available 100% of the time. It is less composition sensitive than any other gauge and is insensitive to air temperature changes.
 
All GBS 100 Gauges measure from one side of the product, reducing purchase and installation costs.  Maintenance costs are also reduced due to the long source life.  And because gamma radiation is less composition sensitive, the 100 provides a stable and accurate measurement without the need for standardization or recalibration.

The NDC Model 100 Series Range comprises:
 
  • Model 101  for Heavy Weight products is ideal for making thick basis or coat weight measurements in the range of 5gsm to 25000gsm.
  • Model 102  for Medium Weight Products is suited to basis or coat weight measurements in the range of 5gsm to 6500gsm
  • Model 103  for Light Weight Products  is designed for making thin basis or coat weight measurements in the range of 5gsm to 1500gsm.  

Features of the 100 Series:

  • Compact size
  • One Sided Measurement
  • Minimal Calibration
  • No Standardization
  • Long Half-Life
  • Exceptional Stability and Accuracy
  • Measurement Against Air or Steel Roll
     
 

 Gamma Backscatter Sensor Type 101/102/103

Gamma Backscatter Gauge 100

 

 

 

To view available downloads, please click on the links below:

 

NDC Gamma Sensor Brochure