Gasmitter® is a gas analyzer capable of measuring CO, CO2, CH4, or SF6. Each analyzer is pre-configured to measure a single gas. Multiple detection ranges are available for each gas.

Gasmitter Brochure (English)
Gasmitter Brochure (German)
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Gasmitter combines high accuracy with an excellent cost-to-benefit ratio based on dual beam technology for improved, long term stability. Pre-aged infrared sources are used to minimize the effects of drift. The Gasmitter output signal is linearized, as well as temperature and pressure compensated. Low t90 response time is one of the benefits of the new Gasmitter.

Gasmitter can be operated via RS-232 or USB interface. A 4-20mA analog output is also available. Gasmitter is manufactured on a half Europe-Card (50mm x 160mm) design, so it fits easily in a wide range of enclosures. 

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Due to its multiple detectable gases and ranges, Gasmitter can be used in many applications.

  • Medical technology
  • Flue gas monitoring
  • Food industry
  • Gas filling stations
  • Biogas plants
  • Landfill gas monitoring
  • Gas quality controlling
  • Vegetable and fruit storage
  • Greenhouse monitoring
  • Gas leakage monitoring
  • Gas warning devices
  • Gas mixing devices
  • High voltage isolation
  • NDIR dual wavelength sensor for gas measurement
  • Temperature and pressure compensation in serial
  • Low-grade drift characteristics
  • Fast response time: >3s
  • RS-232 & USB interface
  • Linearized 4-20 mA analog output
  • Small dimension (half Europe card size, 50mm x 160mm)
  • Supply voltage 10-42 VDC


Measuring principle: Non dispersive infrared (NDIR) dual wavelength
Detectable Gases Ranges
CO2 0-100 Vol.-%, 0-50 Vol.-%, 0-20 Vol.-%, 0-10 Vol.-%, 0-5 Vol.-%, 0-1 Vol.-%, 0-5000 ppm, 0-2000 ppm
CH4 0-100 Vol.-%, 0-20 Vol.-%, 0-10 Vol.-%, 0-5 Vol.-%, 0-2 Vol.-%
CO 0-100 Vol.-%, 0-35 Vol.-%, 0-5 Vol.-%, 0-1 Vol.-%
SF6 0-100 Vol.-%, 0-1000 ppm
Measurement Response1
Linearity error: ≤ ±1% FS*
Lower detection limit: < 0.5% FS*
Repeatability at zero: ±0.2% FS*
Repeatability at span: ±1% FS*
Long term stability: ±2% FS* (12 months under laboratory conditions)
Influencing Variables1
Temperature dependence at zero: ±0.5% FS* per 10K
Temperature dependence at span: ±1% FS* per 10K
Pressure dependence at zero: 0%
Pressure dependence at span: <0.2% FS* per 10mbar (in the range of 800 - 1200 mbar)
Time Response
Warm up: within 10s operational, less 30 minutes to reach specification
Response time (T90): 3 - 45s (depending on used sensor element, flow, tube length, digital attenuation)
Gas Inlet Conditions
Ambient temperature: 0 - 50°C in process
-20 - 60°C in storage
Gas pressure: 800 - 1200 mbar
Ambient humidity: < 95% RH (non condensing)
Flow range (gas): 0.1 - 0.75 l/min (constant)
Zero / span point calibration: Zero point and span point adjustable with software command / Zero point via button on the PCB
Electric Properties
Operating voltage: 12 VDC (10 - 42 VDC)
Power consumption: Max. 3W
Status / Failure visualization: Status and failure LED on the PCB
Analog output (linearized): 0 - 20 mA, 4 - 20 mA, Max. 50Ω load at current output
Digital output (linearized): RS485 Interface, USB Interface
Dimensions / Materials
PCB dimensions: 160mm x 50mm; Height: 45mm (includes connectors and tubes)
Weight: max 800g
Tube connector: 3mm (outside diameter); Hose inside diameter < 3mm
Certificate of compliance

*FS = Full scale
1 = Refers to 1013 mbar sample gas pressure, 25°C ambient temperature and 0.75 l/min constant gas flow

Disclaimer: Specifications are subject to change without notice. While due caution has been exercised in the production of this document, possible errors and omissions are unintentional.

  • Certificate of compliance