EISense
 Electron Impact - Mass Spectrometer

General

The EISense is a classic quadrupole mass spectrometer with electron impact ionisation (EI-MS). This analyzer is the entry level model into online multi component gas analysis from V&F.

The ionisation takes place at 70 eV and the mass range is from 1 to 100 amu with a resolution of 1 amu.

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Functional Diagram

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Typical Applications

  • Process monitoring of pyrolyis plants
  • Development of combustion engines (diesel and gasoline)
  • Alternative fuels
  • Catalysts development
  • Hydrogen measurements




Measureable Compounds (excerpt)

Permanent gases

Substance name Molecular formula
Hydrogen H2
Oxygen O2
Nitrogen N2

Moisture

Substance name Molecular formula
Water H2O

Rare gases

Substance name Molecular formula
Helium He
Neon Ne
Argon Ar
Krypton Kr
Xenon Xe

Hydrocarbons

Substance name Molecular formula
Methane CH4
Benzene C6H6
Toluene C7H8


Specification

Technical Data EI-MS Technical Data EI-MS
Mass range 1 – 100 amu Ambient temperature 20 °C - 35 °C
Resolution ‹ 1 amu Humidity max. 80 % (non-condensing)
Analysis time ›= 5 msec/amu Gas consumption** 30 – 3,000 ml/min
Measuring range* 0 – 100 Vol% Gas inlet temperature 50 °C – 190 °C adjustable
Response time* T90 ‹ 20 msec Gas inlet pressure** 0.75 – 2 bar
Lower detection limit* › 0.01 Vol% Power 230 V/50 Hz or 115 V/60 Hz 800 W
Concentration drift ‹ ± 5 % over 24 h Dimension (WxHxD) 534 x 743 x 639 mm
Reproducibility ‹ ± 3 % Weight 61 kg
Accuracy ‹ ± 2 %


Reference Customers (excerpt)

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