GRIMMGRIMM Aerosol TechnikAerosol Technik

Existing technologies and improvementsExisting technologies and improvements

Environmental MeasurementEnvironmental MeasurementInstrumentsInstruments

by Eng. Wolfgang Brunnhuber

General features

WRAS Systems

Mobile Systems

Stationary Systems

MAIN FEATURES

* 31 channel size distribution

* Different measurements simultaneously

* No probe heating only dehuminifiaction

* No loss of Semi-Volatile compounds

* Chemical specification possible

* Gas analyses possible

ENVIRONMENTAL

#107 Portable Dust Monitor

Small and portable solution for dust measurment in outdoor areas

with PTFE Filter chamber

with glas bottle and filter

#165 Weather Housing

* Includes #107 * Fiber glas case* temperature sensor* Humidity sensor* Optional Rain sensor* Optional Wind sensor* 47mm PTFE Filter* Gas analyses possible

Monitor

Sample Pipe

Dryer

HumidityTemperature

Sensor

Reserve

#165 main parts

F ie ld h o u s in g 1 . 1 6 5

1 . 1 0 7

Operating PrincipleOperating Principle

DEHUMIDIFICATION EDM165

Photo von

EnvironmentCanada, Ontario

#365 Mobile Dust Monitor Grimm

* Stainless steal housing * Long term measurement* temperature sensor* Humidity sensor* Optional Rain sensor* Optional Wind sensor* 47mm PTFE Filter

possible* Gas analyses possible

Stationary Systems

#180 stationary ambient monitor

EN12341 certified * Certified for PM10

according to EN12341* 19zoll rack mount* Special NAFION

dehumidification system

* GESYTEC MODE for networks

* Long time measurement

* Very low TCO‘s

Sampling pipe with Nafion tube

Nafion - The Perfect Drying Material

Nafion is a copolymer of tetrafluoroethylene (Teflon®). Like Teflon, Nafion is highly resistant to chemical attack, but the presence of its exposed sulfonic acid groups confers unusual properties. Sulfonic acid has a very high water-of-hydration, absorbing 13 molecules of water for every sulfonic acid group in the polymer; consequently, Nafion absorbs 22% by weight of water.

 

Unlike micro-porous membrane permeation, which transfers water through a relatively slow diffusion process, Nafion removes water by absorption as water-of-hydration. This absorption occurs as a First Order Kinetic reaction, so equilibrium is reached very quickly (typically with in milliseconds). Because this is a specific chemical reaction with water, gases being dried or processed are usually entirely unaffected.

Jorge Anjos

GRIMM # 190Aerosol Spectrometer

Counts with 31 Size Channelsor

Fine Dust Monitor with the same

specifications as the #180

19” Stationary Dust Monitor / Size Distribution

#265 semi volutile compounds

*specification of the semi volutile sompounds in ambient air

* Stainless steal housing * Long term measurement* temperature sensor* Humidity sensor* Optional Rain sensor* Optional Wind sensor* 47mm PTFE Filter

possible* Gas analyses possible

Data from the E-SVC

E-SVC Heater: 100°C, Intervall 20 min Ein / 40 min Aus

0

5

10

15

20

25

30

35

40

07:1

3

07:3

9

08:0

5

08:3

1

08:5

7

09:2

3

09:4

9

10:1

5

10:4

1

11:0

7

11:3

3

11:5

9

12:2

5

12:5

1

13:1

7

13:4

3

14:0

9

14:3

5

15:0

1

15:2

7

µg/m

³

0

20

40

60

80

100

120

°C

PM-10

PM-2.5

Heater

System Integration of GRIMM

ENVIRONcheck

Installation examples

of „STAND-ALONE“

GRIMM ENVIRONcheck

ENVIRONMENTAL DATA IN REAL TIME

PM-10 and PM-2.5 values at the same time with one unitParticle Concentration in 15 (or 31) Channels continuous

Mobile Systems

WRAS Systems

Stationary Systems

SVC Systems

Wide Range Aerosol Spectrometer

E-WRAS

Combination of the size distribution from a SMPS and a Spectrometer

SMPS: 3 nm ... 300 nm, 44 channels

Spectrometer: 0.25 µm...30 µm, 31 channels

E-WRAS:

•Range from 3 nm to 30.000nm (30 µm)

•75 different channels

19“ Rack-mounted E-WRAS

Sample pipe

Spectrometer #190

19“ CPC + DMA

#565 environmental WIDE RANGE

* Count distribution from 5nm up to 31µm

* 72 channels* Stainless steal housing * Long term measurement* temperature sensor* Humidity sensor* Optional Rain sensor* Optional Wind sensor

Combined Size Distribution

SVC-Semi-Volatile Compounds

Particles in the ambient air consist of

• solid and

• semi-volatile components.

Semi-volatile compounds make up 20% to 50% of the PM2.5

Common samplers are losing semi-volatiles due to the ongoing sampling from the filter or by heating the sample probe to prevent condensation.

Result:

most measurements are underestimated.