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Gasmet Technologies

DX4015

About


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Gasmet™ DX4015 is a portable FTIR gas analyzer for ambient air analysis. The key features of the Gasmet™ DX4015 include a high sensitivity sample cell for lowest possible detection limits and a built-in-pump, which means that there is no need to use a separate sampling system.

Gasmet™ DX4015 is typically set-up to measure a variety of different gases, including VOC`s, acids, aldehydes, and inorganic compounds such as CO, CO2 and N2O. Up to 50 compounds can be measured simultaneously. Gasmet™ DX4015`s sample cell is heated to 50 °C, which allows measurement to be done in conditions where high humidity is expected.

The Gasmet™ DX4015 is operated with an external portable laptop that runs the Calcmet™ software. This easy-to-use program both controls the analyzer and does the actual analysis of the results.

AREAS OF APPLICATION: Research in the soil science, agriculture and geophysical fields including soil trace gas flux measurements, greenhouse gas emissions (CO2, N2O, CH4) from compost, farm animals and bioenergy crops. Workplace and industrial air quality measurements

Features


  • Highest possible sensitivity for low detection limits
  • Built-in pump
  • Also for high humidity applications due to heated sample cell

Technical


General Parameters
Measuring principle
Fourier transform infrared, FTIR
Performance
Simultaneous analysis of up to 50 gas compounds
Response time, T90
Typically < 120 s, depending on the gas flow and measurement time
Operating temperature
Short term 0 – 40 °C Long term 5 – 30 °CNon-condensing
Storage temperature
-20 – 60 °C, non condensing
Power supply
100-115 / 230 V / 50-60 Hz 12 VDC
Power consumption
Average 150 W, maximum 300 W
Spectrometer
Resolution
8 cm-1 or 4 cm-1
Scan frequency
10 scans / s
Detector
Peltier cooled MCT
Source
SiC, 1550 K
Beamsplitter
ZnSe
Window material
ZnSe
Wave number range
900 - 4 200 cm-1
Sample Cell
Structure
Multi-pass, fixed path length 9.8 m
Material
100 % rhodium coated aluminum
Mirrors
Fixed, protected gold coating
Volume
0.4 liters
Connectors
Inlets Swagelok 6 mm Outlet Swagelok 6 mm
Gaskets
Viton® O-rings
Temperature
50 °C, maximum
Valve
Manual Swagelok
Window material
AR coated ZnSe
Measuring parameters
Zero point calibration
24 hours, calibration with nitrogen (5.0 or higher N2 recommended)
Zero point drift
< 2 % of measuring range per zero point calibration interval
Sensitivity drift
None
Linearity deviation
< 2 % of measuring range
Temperature drifts
< 2 % of measuring range per 10 K temperature change
Pressure influence
1 % change of measuring value for 1 % sample pressure change. Ambient pressure changes measured and compensated.
Electrical connectors
Digital Interface
9-pole D-connector for RS-232. Analyzer is connected to an external computer via RS-232C cable. The external computer controls Gasmet.
Power connection
Standard plug CEE-22
Gas inlet and outlet conditions
Gas temperature
Non-condensing, the sample gas temperature should be the same as the sample cell temperature
Flow rate
120 - 360 liters per hour
Gas filtration
Filtration of particulates (2 µ) required
Sample gas pressure
Ambient
Sample pump
Internal, for ambient air only
Electronics
A/D converter
Dynamic range 95 dB
Signal processor
32-bit floating point DSP, 120 MFLOPS speed
Computer
External, not included
Analysis software (for external PC)
Operating system
Windows 7 (32-bit)
Analysis software
Calcmet for Windows
Options
Sample cell
Multi-pass, fixed path 2.5 m or 5.0 m
Pressure measurement
Inside sample cell
Analog signals (ext PC)
ADAM 5000/TCP module (for analog inputs, outputs, relays)
Sample cell gaskets
Teflon® coated Viton® or Kalrez®
Power connection
12 VDC
Power supply cables
12 V cables with battery clips or cigarette lighter connector
Trolley
Wheeled cart for the analyzer and laptop computer
Enclosure
Material
Aluminium
Dimensions (mm)
438 * 164 * 445
Weight
14.9 kg
CE label
According to EMI guideline 89/336/EC

Document


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DX4015

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