Dutch Xensor Thermal Conductivity Gas Sensor - XEN-3880-RW-3

Dutch Xensor Thermal Conductivity Gas Sensor XEN-3880-RW-3 Description:

The XEN-3880-RW-3 thermal conductivity meter measures the thermal conductivity of the surrounding gas. The principle is that different gases have different thermal conductivities, which can be used to measure gas concentration in binary or quasi-binary mixtures where the component gases have different thermal conductivities. It can also be used to measure pressure in vacuum systems.

The sensor chip consists of a silicon frame and a synthetic membrane, with a heater in the middle. A thermopile measures its temperature and the thermal conductivity between the chip and the environment, and the center of the membrane.

On top of the membrane, there is a silicon cap (roof) with a filter welded cap (W) to suppress flow sensitivity.

Dutch Xensor Thermal Conductivity Gas SensorXEN-3880-RW-3Features:
Long-term stable analysis of gases in binary and quasi-binary mixtures
High sensitivity and resolution
Operating temperature: -250°C to 150°C
Humidity: 0 to 95% RH, non-condensing
Negligible flow sensitivity

Dutch Xensor Thermal Conductivity Gas SensorXEN-3880-RW-3Applications:

Hydrogen, helium, and natural gas measurement
Testing hydrogen systems with helium
Vacuum measurement in packaging and vacuum systems
Gas concentration measurement

Dutch Xensor Thermal Conductivity Gas SensorXEN-3880-RW-3Parameters:

ParameterVolume
DimensionsThickness (mm3)	2.5*3.33*0.3
TO-5 header (mm2)	9 Ф x 6
Pin length (mm)	13.5
TO-5 weight (g)	0.71
TO-5 + cap + filter weight (g)	1.05
Output
Vacuum < 1 mpa (V/W)	130
Air pressure 100 kPa (V/W)	30
Air pressure10 MPa (V/W)	26
In helium at 100 kPa (V/W)	7
In helium at 10 mpa (V/W)	6.9
Time constant
In air (ms)	9
In vacuum (ms)	36
Stability
Short-term 1 day (ppm)	1
Long-term 1 year (ppm)	300
Thermistor
Membrane (kK / W)	100
Membrane + air (kK/W)	23
Maximum heater voltage
In air (V)	2.5
In vacuum (V)	1