Thermal Conductivity Sensor with USB / Wifi Read-out - XEN-5320

• Standard measurements
- Helium 0-100%
- Hydrogen 0-100%
• Temperature range -20°C to +55°C
• Humidity range 0-95% non-condensing
• Start-up time: 1 second
• Data refresh time: 0.3 second
• T90 sensing and T 10 recovery time: 0.6 s

  • Model Number: XEN-5320
  • Data Sheet: Date Sheet File
Quantity:
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  • Thermal Conductivity Sensor with USB / Wifi Read-out
  • Thermal Conductivity Sensor with USB / Wifi Read-out
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Product Specification

XEN-5320 Thermal Conductivity Sensor Description
The XEN-5320 is an intelligent gas sensor for the measurement of gas composition, such as helium in air (hydrogen mimicking), oxygen (diving applications) or nitrogen; hydrogen in air or nitrogen (fuel cell applications). In addition, it can serve as a thermocouple-vacuum sensor, and it can give a general output signal, useable for other gas compositions.

The sensor is based on the measurement of the thermal conductivity of the ambient gas, using the proven thermal conductivity sensor XEN-TCG3880

To compensate for the influence of temperature and humidity, these are measured separately and a correction is made for them in the micro-controller. Each device is factory calibrated (zeroed), the customer can re-zero.

XEN-5320 Thermal Conductivity Sensor Features
• Standard measurements
  - Helium 0-100%
  - Hydrogen 0-100%
  - General output
  - Vacuum reading (optional)
• Digital output: USB, WIFI (optional)
• Temperature and Humidity compensated
• Temperature range -20°C to +55°C
• Humidity range 0-95% non-condensing
• Start-up time: 1 second
• Data refresh time: 0.3 second
• T90 sensing and T 10 recovery time: 0.6 s
• Power supply USB, Li-ion battery (optional)

XEN-5320 Thermal Conductivity Sensor Applications
• Hydrogen and helium gas experimentation
• Detection of gas dispersion rate in jets and plumes
• Fuel cell exhaust measurement
• Binary gas composition measurement
• Vacuum measurement (optional)

XEN-5320 Thermal Conductivity Sensor Preliminary Specifications
Preliminary Specifications (at 23°C, 101 kPa, 50 %RH)

Item
Typical
Unit
Remarks
General
Sensitivity for traces of H2
-2.0
%/%
Signal change for concentration in air
Sensitivity for traces of He
-1.1 %/%
Signal change for concentration in air
Sensitivity for traces of CO2
+0.4 %/%
Signal change for concentration in air
Sensitivity for vacuum
-4.7
%/Pa
For low pressures
Noise
0.04 %
Of signal in air
Offset drift
0.2 %/yr
Of signal in air
Operating limits
Temperature operating range
-20 to + 55
°C
For full accuracy
Temperature changes
<1
°C/min
Maximum rate of change
Humidity operating range
0-95
%RH
Non-condensing
Humidity changes
<1
%RH/min
Maximum rate of change
Pressure range
800-1200
mbar
Full accuracy

200-800
mbar
Reduced accuracy
Operation speed
System start up time
<1
Second

T90 response time
<1
Second
For 0% to 2% hydrogen in air.
T10 recovery time
<1
Second
For 2% to 0% hydrogen in air.
Data update rate
3.3 Hz
Maximum
Electrical
Current consumption
20
mA
USB
Average current consumption with WIFI
65 mA

Battery life
15 hrs
950 mAh
Storage
Temperature storage limits
10-40
°C

Humidity storage limits
20-70
%RH

Dimensions
USB version
57 x 40 x 15
mm3
no housing, PCB version.
WIFI/battery version
63 x 51 x 24
mm3
housing standard; including the
extruding TCG sensor and LEDs.

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