Abstract

a collecting unit to provide an electric current by collecting charges from the charged particles by diffusion of the charged particles, the electric current being indicative of number density of aerosol particles of the aerosol sample flow. The internal pressure of the collecting unit is maintained at a reduced value in order to provide a flat response of the electric current for detecting nanoparticles of different sizes.

IPC Classes  ?

• G01M 15/10 - Testing internal-combustion engines by monitoring exhaust gases
• G01N 1/22 - Devices for withdrawing samples in the gaseous state
• G01N 15/06 - Investigating concentration of particle suspensions

Abstract

wherein the control unit and the control valve are arranged to adjust flow rate of the second dilution gas flow according to an inlet pressure of the aerosol sample flow, so as to keep the dilution factor of the diluting apparatus substantially independent of the inlet pressure.

IPC Classes  ?

• G01N 1/22 - Devices for withdrawing samples in the gaseous state
• G01M 15/10 - Testing internal-combustion engines by monitoring exhaust gases

Abstract

p2PSETippp).

IPC Classes  ?

• G01N 1/22 - Devices for withdrawing samples in the gaseous state
• F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
• F02D 41/14 - Introducing closed-loop corrections
• G01M 15/10 - Testing internal-combustion engines by monitoring exhaust gases
• G01N 15/02 - Investigating particle size or size distribution
• G01N 15/06 - Investigating concentration of particle suspensions
• G01N 27/68 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode using electric discharge to ionise a gas
• G01N 15/00 - Investigating characteristics of particlesInvestigating permeability, pore-volume or surface-area of porous materials

Abstract

DG202000).

IPC Classes  ?

• G01N 1/22 - Devices for withdrawing samples in the gaseous state
• G01N 1/38 - Diluting, dispersing or mixing samples

Abstract

an outlet channel for guiding charged particles from the charging space to the detector.

IPC Classes  ?

• H01T 19/04 - Devices providing for corona discharge having pointed electrodes
• G01M 15/10 - Testing internal-combustion engines by monitoring exhaust gases
• G01N 15/06 - Investigating concentration of particle suspensions
• G01N 15/00 - Investigating characteristics of particlesInvestigating permeability, pore-volume or surface-area of porous materials

Abstract

A particle measuring apparatus (200, 500) comprises: - a charging unit (CUNIT1) to form charged particles (P2) from aerosol particles (P1) carried by an input flow (FG2), and - a particle detector (DET1) to provide an electric current (lp(t)) by collecting the charged particles (P2), wherein the charging unit (CUNIT1 ) in turn comprises: - a counter-electrode (ELECO) having a substantially hemispherical inner portion to define a charging space (SPC1), - an inlet channel (CH1 ) for guiding aerosol particles (P1) into the charging space (SPC1), - a corona electrode (ELEC3) to form charged particles (P2) from the aerosol particles (P1) by generating a corona discharge in the charging space (SPC1), and - an outlet channel (CH2) for guiding charged particles (P2) from the charging space (SPC1).

IPC Classes  ?

• G01N 27/70 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode using electric discharge to ionise a gas and measuring current or voltage
• G01N 15/06 - Investigating concentration of particle suspensions
• H01T 19/00 - Devices providing for corona discharge
• G01M 15/10 - Testing internal-combustion engines by monitoring exhaust gases

Abstract

A particle measuring apparatus (500), comprises: - a distributor unit (300) arranged to provide a first partial flow (FG1) and a second partial flow (FG2) by separating the second partial flow (FG2) from an input flow (FG0), - a particle collecting unit (100) to collect particles (P1) from the first partial flow (FG1) by using a first filter (FIL1), and - a particle monitoring unit (200) to form charged particles (P2) by charging particles (P1) carried by the second partial flow (FG2), and to provide an electric current (Ip(t)) by collecting the charged particles (P2).

IPC Classes  ?

• G01N 15/06 - Investigating concentration of particle suspensions
• G01N 1/22 - Devices for withdrawing samples in the gaseous state
• G01N 5/00 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
• G01M 15/10 - Testing internal-combustion engines by monitoring exhaust gases

Abstract

A particle measuring apparatus (500) comprises: - a distributor unit (300) arranged to provide a first partial flow (FG1) and a second partial flow (FG2) by separating the second partial flow (FG2) from an input flow (FG0), - a particle collecting unit (100) to collect particles (P1) from the first partial flow (FG1) by using a first filter (FIL1), and - a particle monitoring unit (200) to form charged particles (P2) by charging particles (P1) carried by the second partial flow (FG2), and to provide an electric current (Ip(t)) by collecting the charged particles (P2).

IPC Classes  ?

• G01N 15/06 - Investigating concentration of particle suspensions
• G01N 1/22 - Devices for withdrawing samples in the gaseous state
• G01N 5/00 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid

Abstract

A particle measuring apparatus includes a distributor unit arranged to provide a first partial flow and a second partial flow by separating the second partial flow from an input flow, a particle collecting unit to collect particles from the first partial flow by using a first filter, and a particle monitoring unit to form charged particles by charging particles carried by the second partial flow, and to provide an electric current by collecting the charged particles.

IPC Classes  ?

• G01N 15/06 - Investigating concentration of particle suspensions
• G01M 15/10 - Testing internal-combustion engines by monitoring exhaust gases
• G01N 15/00 - Investigating characteristics of particlesInvestigating permeability, pore-volume or surface-area of porous materials

Abstract

A particle measuring apparatus includes a distributor unit arranged to provide a first partial flow and a second partial flow by separating the second partial flow from an input flow, a particle collecting unit to collect particles from the first partial flow by using a first filter, and a particle monitoring unit to form charged particles by charging particles carried by the second partial flow, and to provide an electric current by collecting the charged particles.

IPC Classes  ?

• G01N 15/06 - Investigating concentration of particle suspensions

Goods & Services

Measuring, monitoring, calculating, and analysing apparatus and instruments; particle sizing apparatus and instruments; particle counting apparatus and instruments; instruments and apparatus for measuring particle size distribution and concentration; instruments and apparatus for performing chromatography, for the measurement of weight, size, shape, structure, concentration and characteristics of particles; instruments and apparatus performing optical image analysis, for the measurement weight, size, shape, structure, concentration and characteristics of particles; parts and fittings for the aforesaid goods; computer software and hardware for controlling and operating all of the aforesaid goods and for analysing measurements made by all of the aforesaid goods.

Goods & Services

Measuring apparatus for measuring and analyzing particle concentration and particle size distribution and spare parts thereof; measuring apparatus and measuring sensors for measuring combustion exhaust gases; impactors for measuring particle concentration and particle size distribution; aerosol monitors for measuring particle concentration and particle size distribution; sampling apparatus for measuring and analyzing particle concentration and particle size distribution; computer programs and software for measuring and analyzing particle concentration and particle size distribution; diode chargers for particle measurement apparatus; diluters for particle measurement apparatus; low pressure pumps for sampling and testing as parts of particle measurement apparatus

Abstract

In the method, for collecting and diluting a gaseous sample disposed at a temperature substantially higher than the normal temperature from a sample space (2), a flow of sample is collected into a sampling tube (3); the flow of sample is introduced from the sampling tube into a sample channel (8) formed by a gas permeable first jacket (7); dilution gas is introduced into a dilution gas space (10) formed by a second jacket (9) enclosing the first jacket and connected by its end to the sampling tube, and further from it, through the first jacket into the sample channel; and heat is conducted from the sample space (2) into the dilution gas space (10) for warming up the dilution gas that comes into contact with the sampling tube (3). According to the invention, in the method, a substantially laminar protection flow, which encloses the flow of sample being released from the sampling tube (3) into the sample channel (8) and is disposed longitudinally to the sample channel, is formed from the warmed up dilution gas.

IPC Classes  ?

• G01N 1/22 - Devices for withdrawing samples in the gaseous state

Goods & Services

Checking (supervision) apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; magnetic data carriers, recording discs; data processing equipment and computers; measuring apparatus for measuring and analyzing particle concentration and particle size distribution and spare parts thereof; measuring apparatus and measuring sensors for measuring combustion exhaust gases; impactors for measuring particle concentration and particle size distribution; aerosol monitors for measuring particle concentration and particle size distribution; sampling apparatus for measuring and analyzing particle concentration and particle size distribution; computer programs and software for measuring and analyzing particle concentration and particle size distribution; diode chargers for particle measurement apparatus; diluters for particle measurement apparatus; low pressure pumps as parts of particle measurement apparatus. Maintenance and repair; installation services; maintenance, repair and installation services of measuring and monitoring apparatus. Education; providing of training; training services related to installation, maintenance and repair of measuring and monitoring apparatus; implementation training of measuring and monitoring apparatus. Scientific and technological services and research and design relating thereto; industrial analysis and research services; design and development of computer hardware and software in the field of measuring technology; updating services of computer programs and software related to measuring technology.

Goods & Services

Measuring apparatus for measuring and analyzing particle concentration and particle size distribution and spare parts thereof; measuring apparatus and measuring sensors for measuring combustion exhaust gases; impactors for measuring particle concentration and particle size distribution; aerosol monitors for measuring particle concentration and particle size distribution; sampling apparatus for measuring and analyzing particle concentration and particle size distribution; computer programs and software for measuring and analyzing particle concentration and particle size distribution; diode chargers for particle measurement apparatus; diluters for particle measurement apparatus; low pressure pumps for sampling and testing as parts of particle measurement apparatus Maintenance, repair and installation services of measuring and monitoring apparatus for measuring and analyzing particle concentration and particle size distribution [ training services related to installation, maintenance and repair of measuring and monitoring apparatus for measuring and analyzing particle concentration and particle size distribution; implementation training in the field of measuring and monitoring apparatus for measuring and analyzing particle concentration and particle size distribution ] Scientific and technological services and research and design relating to measuring and monitoring apparatus for measuring and analyzing particle concentration and particle size distribution, namely, scientific research, design, and development of measuring and monitoring apparatus for measuring and analyzing particle concentration and particle size distribution; industrial analysis and research services related to measuring and monitoring apparatus for measuring and analyzing particle concentration and particle size distribution; [ design and development of computer hardware and software for measuring and analyzing particle concentration and particle size distribution; updating services of computer programs and software for measuring and analyzing particle concentration and particle size distribution ]

Abstract

A device and a method for diluting a sample are disclosed. A sample is first diluted by a porous tube type diluter configuration. Then the diluted flow is further diluted by a ejector type diluter configuration. Further a heat exchange based on serrature heat exchange elements inside said porous tube type diluter configuration is disclosed.

IPC Classes  ?

• G01N 1/38 - Diluting, dispersing or mixing samples
• G01N 1/00 - SamplingPreparing specimens for investigation