Environics Oy

Olfactomics Oy

Environics Ov

Osmo Anttalainen

Niku Oksala

Erkka Saukko

Terhi Mattila

Antti Roine

Heikki Paakkanen

Anton Kontunen

Esko Karpanoja

Mikko Koskenranta

Markus Karjalainen

Tero Katto

Esko KÄRPÄNOJA

Tero KÄTTÖ

An arrangement for providing a waveform for driving an ion mobility device. The arrangement comprises at least a plurality of switching circuits, each switching circuit comprising at least two switches operatively coupled to a first voltage source (VH), wherein the plurality of switching circuits is arranged to be coupled in parallel with respect to each other. The arrangement additionally comprises an interleaving circuit configured to receive a time-varying electrical input signal exhibiting an input frequency and based on said input signal, operate the plurality of switching circuits to provide a waveform via the switches, said waveform exhibiting a switching frequency that is essentially equivalent to the input frequency.

Arrangement and method for providing a waveform for driving an ion mobility device

The invention relates to a method and device for measuring gaseous substances, in which the method comprises the stages: ionization of the sample gas in a gas flow, leading of the ionized gas flow through an elongated ion-mobility measuring chamber in the cross-section defined by it, filtering out of ions from the ionized gas flow at a distance from the measuring electrodes, permitting the passage of only the ions travelling from the flow cross-section at the selected point, separation of ions with a different ion mobility, with the aid of a transverse static electric field and at least one measuring-electrode pair arranged along the wall of the measuring chamber.

Method for measuring gases and corresponding ion mobility spectrometer

The invention relates to a gas analysis based on the mobility of ions. The invention relates to a cell structure of an analysis device, the cell structure comprising the reference cell (), the ionisation section () and the analysis cell () for identifying the electric mobility of ions. The invention also relates to a method for identifying the ions. Further, the invention relates to a system for identifying the ions.

Cell structure, device and method for gas analysis

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Mikkeli, Finland

Osmo Anttalainen