GRIMM Aerosol Technik Existing technologies and improvements Environmental Measurement Instruments...
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Transcript of GRIMM Aerosol Technik Existing technologies and improvements Environmental Measurement Instruments...
GRIMMGRIMM Aerosol TechnikAerosol Technik
Existing technologies and improvementsExisting technologies and improvements
Environmental MeasurementEnvironmental MeasurementInstrumentsInstruments
by Eng. Wolfgang Brunnhuber
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
#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
F ie ld h o u s in g 1 . 1 6 5
1 . 1 0 7
Operating PrincipleOperating Principle
DEHUMIDIFICATION EDM165
#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
#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
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.
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
PM-10 and PM-2.5 values at the same time with one unitParticle Concentration in 15 (or 31) Channels continuous
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
#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
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.