GRIMM
Aerosol Technik
Existing technologies and improvements
Environmental Measurement
Instruments
by Eng. Wolfgang Brunnhuber
General features
Mobile Systems
Stationary Systems
WRAS 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
with glas bottle and filter
with PTFE Filter chamber
Small and portable solution for dust
measurment in outdoor areas
#165 Weather Housing
* Includes #107
* Fiber glas case
* temperature sensor
* Humidity sensor
* Optional Rain sensor
* Optional Wind sensor
* 47mm PTFE Filter
* Gas analyses possible
#165 main parts
Sample Pipe
Humidity
Temperature
Sensor
Dryer
Monitor
Reserve
F ei dl housnig 1 1. 65
DEHUMIDIFICATION
EDM165
Operating Principle
1 1. 07
Photo von
Environment
Canada, 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
* 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 waterof-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
19” Stationary Dust Monitor / Size Distribution
GRIMM # 190
Aerosol Spectrometer
Counts with 31 Size Channels
or
Fine Dust Monitor
with the same
specifications as the #180
#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
40
PM-10
120PM-2.5
35
100Heater
80
25
20
60 °C
15
40
10
20
5
15:27
15:01
14:35
14:09
13:43
13:17
12:51
12:25
11:59
11:33
11:07
10:41
10:15
09:49
09:23
08:57
08:31
08:05
0
07:39
0
07:13
µg/m³
30
System Integration
of GRIMM
ENVIRONcheck
Installation examples
of „STAND-ALONE“
GRIMM ENVIRONcheck
ENVIRONMENTAL DATA IN REAL TIME
Particle
Concentration
in 15at(or
Channels
continuous
PM-10 and
PM-2.5 values
the31)
same
time with
one unit
Mobile Systems
Stationary Systems
SVC Systems
WRAS 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.