The 11-C is the result of continuous development of GRIMM’s world-wide known and appreciated spectrometers. The combination of advanced data communication and reliable optical measurement technology makes the 11-C the qualified successor of the world-famous aerosol spectrometer 1.109.

The intention of the aerosol spectrometer 11-C is to maintain the reliability the customers world-wide appreciate while giving them on top the possibility to now use various types of interfaces. Next to the stable still-in-use standard RS-232 you will now be able to hook up via Ethernet, USB (type A and B) and even wireless Bluetooth connection. The measurement data are saved on an SD card.

You want to control your aerosol spectrometer via WIFI? No problem. Simply connect the 11-C via the Ethernet port to a router, set your laptop, PC or tablet and control it online via the spectrometer software 1178.

High-tech laser optics and the sophisticated concept of the spectrometer makes the 11-C capture every single particle ranging from 0.25 to 32 µm classifying them into 31 size channels.

Customer’s benefits

• Small, portable, tough, battery powered and remote controllable via Bluetooth
• Modern data communication interface (SD card, USB, Bluetooth and Ethernet)
• Integrated, removable 47 mm PTFE filter for subsequent gravimetrical and chemical analysis (dual technology)
• Self-test at each start-up
• Flow and return of the permanent rinsing air for keeping the optical measurement cell clean
• Via software: PM10, PM2.5 and PM1 values in real-time
• Output of measuring data as particle count and output of dust mass fractions in 31 channels
• (via software: output of the results for occupational health purposes according to the European standard EN 481)

For the user, the 11-C offers the complete possibilities when saving or retrieving the measurement data. The measurement data can be conveniently accessed and checked online at the workplace via laptop or tablet. The Ethernet port enables the user to access the device via the company’s intranet or even WIFI router.

Measurement range: Dust fracti ons (EN 481) inhalable, thoracic, and respirable PM10, PM2.5 and PM1 as well as number concentrati on, and size distribution
Parti cle size range: 0.25 – 32 μm
Size channels: 31 in total 0.25/0.28/0.3/0.35/0.4/0.45/0.5/0.58/0.65/0.7/0.8/1/1.3/1.6 /2/2.5/ 3/3.5/4/5/6.5/7.5/8.5/10/12.5/15/17.5/20/25/30/32 [μm]
Particle number: 0 – 3 000 000 parti cles/liter
Dust mass: 0.1 μg/m³ – 100 mg/m³
Reproducibility: ± 3% for total measuring range

Particle detection principle: Light scattering at single particles Detection volume aerodynamically focused, no boarder zone error
Optical cell: Diode laser 660 nm, Pmax = 60 mW, Pnom 0.5/32 mW CW (multi plex)
Detector: Super fast signal processing with 2 μs pulse length, 2 x 16 raw data channels
Time resolution: 6 s, 31 channels (selectable storage intervals 6 s, 1, 5, 10, 15, 30, 60 min)
Volume flow: 1.2 l/min, ± 3% constant due self regulation
Internal rinsing air: 0.4 l/min, protects laser optics, reference air for self-test
Sample collection: 47 mm PTFE fi lter

Operation: Keypad or PC with GRIMM software (wireless or data cable)
Interfaces: Bluetooth, USB, Ethernet, RS-232, 4 GByte SD internal card
Analogue output: 3 values (0 – 10 V), for external sensors
Power supply: in: 100 – 240 VAC, 47 – 63 Hz, out: 18 VDC, 2.5 A
Battery: Li-Ion-battery, 11.1 V, 4 Ah for 8 h operation
Power input: 5.4 W standard, 14.4 W maximum during battery charging
Dimensions: 32 x 18 x 7 cm /12.6 x 7.1 x 2.8 inches (L x W x H)
Weight: 2.4 kg / 5.3 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 %