Post on 17-Dec-2015
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.