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MODEL 11-D

THE DUST DECODER

The all-purpose 11-D: Decode Your Dust

The model 11-D, in its compact and rugged design, combines all advantages of the previous portable GRIMM aerosol spectrometers with the improved optical detection, long-term battery operation, and facilitated handling.

This configuration places the 11-D in the leading position of the portable aerosol spectrometers for monitoring inhalable, thoracic and respirable dust, PM values, and particle number concentration.

The 11-D is the optimal solution for reliable, flexible and real-time measurements for aerosol research and indoor air quality, e. g. at workplaces, interior of vehicles, or for process analysis.

Overview

real-time monitoring of particle number, occupational dust mass fractions, and PM values
additional information of particle number, particle surface, and dust mass distribution
31 equidistant size channels, PSL traceable
integrated 47 mm PTFE filter (GRIMM dual technology)
versatile data acquisition and communication interfaces (Bluetooth, USB, Ethernet, RS-232)
rinsing air for protecting laser and detector in optical cell
internal sensor for temperature (T) and relative humidity (RH) in optical cell
total inlet flow (1.2 L/min) analyzed in optical cell
self-test of all optical and pneumatic components for highest quality standards

Applications

aerosol science
PM_2.5 in indoor environments according to VDI 4300, part 11
Indoor Air Quality (IAQ) in buliding and vehicles process control in industry
workplace monitoring (inhalable, thoracic, respirable) according to EN 481
monitoring of Permissible Exposure Limit (PEL) with high time resolution
dust pollution measurements

Technical Data

measurement range	dust fractions (EN 481) inhalable, thoracic, and respirable TSP, PM10, PM4, PM2.5, PM1, and PMcoarse number concentration and size distribution
particle size range	0.253 - 35.15 μm
size channels	31 in total, equidistant
particle number	0 - 3 000 000 particles/liter, diluter available for higher concentrations
dust mass	0 μg/m3 - 100 mg/m3
reproducibility	± 3% for total measuring range, according to ISO 21501-1

particle detection principle	light scattering at single particles with diode laser; detection volume aerodynamically focused, no border zone error
detector	fast signal processing, 2 x 16 raw data channels
time resolution	6 s, 31 channels (selectable storage intervals 6 s, 1, 5, 10, 15, 30, 60 min) 1 s, 16 size channels (0.253 μm < Dp <2.982 μm < Dp < 35.15 μm)
volume flow rate	1.2 L/min, ± 3% constant due to self-regulation, according to ISO 21501-1; automatic altitude correction
rinsing air	0.4 L/min, protection for laser optics, reference air for self-test
gravimetric control	47 mm PTFE filter

operation	keypad or PC with GRIMM software (wireless or data cable)
interfaces	Bluetooth, USB, Ethernet, RS-232, SD card
analog input	1 port (0 - 10 V) for external sensors
power supply	in: 100 - 240 VAC, 47 - 60 Hz, out: 12 VDC, 2.5 A
power consumption	5.4 W
battery	intelligent Li-lon-battery, 10.8 V, 6.8 Ah for minimum 8 h operation with desktop smart quick charger
dimensions	27 x 13 x 7 cm / 10.5 x 4.8 x 2.6 inches (L x W x H)
weight	2.1 kg / 4.6 lbs
operating conditions	+4 to +40°C (39 - 104°F), RH < 95%, non-condensing, non-corrosive, or explosive gases
storage and transport	-20 to +50°C (-4 - 122°F), RH<95%

Accessories

1179	advanced GRIMM software for 11-D
1144B	Hard-sided carrying case with foam inserts
1146	GPS sensor
1152	isokinetic sampling probe for 4 - 25 m/s
1158-TRH	external sensor for temperature and relative humidity
1159-10, 1159-100	capillary diluter (1:10 or 1:100)

Downloads

Available documents

Datasheet Dust Decoder (252 KB)

The Catalog 2019 (6 MB)

11-D Firmware Update Tool (516 KB)

Firmware Update