Thick-film Gas Flow Sensor

XEN-GFL9722 Gas Flow Sensor Description
The Gas Flow Sensor XEN-GFL9722 is a ceramic based thermal sensor. It consists of two thick-film heating resistors and a thick-film temperature sensor. Both temperature sensor and heating resistors are laser trimmed which provides a true sensor-to-sensor interchangeability. The sensitive parts of the sensor are coated with a black polymer, which protects them from harsh environments like aggressive solvents, corrosive gasses and aggressive vapors.

When the XEN-GFL9722 is heated by the heating resistors, a gas flow passing the sensor will cool it. Because of this the output resistance will change. External temperature effects can be compensated using a second, not-heated, sensor connected in a Wheatstone bridge configuration.

XEN-GFL9722 Gas Flow Sensor Features
• Solid State reliability
• Low cost, small size
• Long-term stability (parts of a percent)
• Interchangeability (0.5%)
• Protective polymer coating
• Custom designs on request
 
XEN-GFL9722 Gas Flow Sensor Applications
• Flow detection
• Gas-flow measurements
• Flow control
• Absolute temperature measurement
• Fluid detection

XEN-GFL9722 Gas Flow Sensor Specifications
(in air, ambient temperature 20°C, 1 Atm.)