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V&F TwinSense

Manufacturer: V&F

V&F TwinSense

Dual IMR-MS analyzer for fast, simultaneous measurements upstream and downstream of a catalytic converter.

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Key features

  • Two IMR-MS units for simultaneous pre- and post-catalyst measurement
  • Analysis time 10 ms and response time T90 < 150 ms per channel
  • Mass range 7–519 amu on both channels
  • Heated gas inlets adjustable from 50 to 190 °C

Technical data

Measuring principle
Dual ion-molecule reaction mass spectrometry (2 x IMR-MS)
Mass range
7–519 amu (each IMR-MS)
Resolution
< 1 amu
Analysis time
10 ms
Measuring range
10^5
Response time
T90 < 150 ms
Detection limit
100 ppb
Concentration drift
< ±5 % over 24 h
Accuracy
< ±3 %
Precision
< ±3 %
Ambient temperature
20–35 °C
Max. humidity
80 % (non-condensing)
Gas consumption
30–3000 ml/min (each IMR-MS)
Gas inlet temperature
50–190 °C, adjustable
Gas inlet pressure
0.75–2 bar(a)
Power supply
230 V/50 Hz or 115 V/60 Hz, 1250 W (each IMR-MS)
Dimensions (W x H x D)
600 x 1692 x 700 mm
Weight
208 kg

Description

The V&F TwinSense houses two ion-molecule reaction mass spectrometers (IMR-MS) in one analyzer. The dual configuration is designed for fast, simultaneous measurements before and after the catalytic converter.

Typical applications

  • Development of internal combustion engines (diesel and petrol)
  • Rapid measurement of hydrocarbons
  • Ammonia measurements on DeNOx catalysts
  • NOx measurements on diesel engines
  • Alternative fuels
  • Catalyst development
  • Desulfurisation measures

Application examples

Automotive industry

  • Ammonia and NOx measurements in engine exhaust gas
  • Desulfation strategies for catalytic converters

Measurable compounds

  • Inorganic compounds: H2O, O2, CO2, CO, H2S, SO2, S, NH3, NO, NO2, N2O, HCl
  • Aromatics: C6H6 (benzene), C7H8 (toluene), C8H8 (styrene), C8H10 (xylene/ethylbenzene), C6H6O (phenol), PAHs
  • Alkanes: CH4, C2H6, C3H8, C4H10, C5H12, C6H14, C7H16, C8H18, C9H20, C10H22
  • Alkynes: C2H2 (acetylene), C3H4 (propyne)
  • Sulfur compounds: H2S, COS, SO2, CS2, CH3SH, C2H5SH
  • Nitrogen compounds: NH3, NO, NO2, N2O
  • Alcohols: CH3OH, C2H5OH, C3H7OH, C4H9OH
  • Aldehydes: HCHO (formaldehyde), CH3CHO (acetaldehyde), C2H5CHO (propionaldehyde), C6H12O (hexanal), C7H6O (benzaldehyde)

Values marked as application-dependent (measuring range, response time, detection limit, gas consumption) depend on the compounds measured, the system configuration and the instrument settings.

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