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 VOCs, 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 measurements 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.



  1. DX4015
  2. Laptop PC with CalcmetTM software: RS232 communication to control DX4015
  3. Power connection 12 VDC: 12 V cables with battery clips or cigarette lighter connector
  4. Particulate filtration and heated/unheated lines for gas transport
  5. Optional analog signals in external PC: ADAM 5000/TCP module (for analog inputs, outputs, relays)
  6. Optional wheeled cart for the analyzer and laptop computer


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


Technical Data


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 °C
Storage temperature: -20 – 60 °C, non condensing
Power supply: 100-115 or 230 V / 50 -60 Hz
12 VDC
Power consumption: Average 150 W, maximum 300 W


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 aluminium
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


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


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


Material: Aluminium
Dimensions (mm): 438 * 164 * 445
Weight: 14.9 kg
CE label: According to EMI guideline 89/336/EC

Gasmet Technologies Oy shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is provided “as is” without warranty of any kind and is subject to change without notice. Should you find any errors, we would appreciate if you notified us.


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