DRI 2015 Series 2

The DRI 2015 Series 2 Multiwavelength Thermal/Optical Carbon OC/EC Analyzer enhances the widely-used DRI 2001 and DRI 2015 systems for quantifying organic carbon (OC), elemental carbon (EC, also termed black carbon, BC), and temperature-separated carbon fractions on aerosol filter deposits (Chow et al., 1993). The DRI 2015 Series 2 retains the consistency of OC and EC data with measurements performed on previous models; while reducing costs of supplies and maintenance compared with the DRI 2001. Additionally, it also features CE mark.

DRI 2015 Series 2 replaces the 633 nm optical monitoring that accounts for OC charring with reflected (R) and transmitted (T) intensities at wavelengths of 405, 445, 532, 635, 780, 808, and 980 nm.  The additional optical information can be used to estimate multiwavelength light absorption of the sampled particles, infer the concentration of brown carbon (BrC) in each sample, and further complement the use of carbon fractions in source apportionment studies (Chen et al., 2015; Chow et al., 2015). DRI 2015 Series 2 software includes temperature programs for commonly-used protocols such as IMPROVE_A (Chow et al., 2007; 2011), EUSAAR_2 (Cavalli et al., 2010), and NIOSH (Birch and Cary, 1996; Chow et al., 2001), and it can be programmed to emulate any other protocol. The simultaneous measurement of both R and T at all wavelengths throughout each analysis allows for reproducing any other thermal/optical method and holds potential for better characterizing additional properties of the carbonaceous aerosol.

Autoloader of the DRI 2015 Series 2 with capacity for 50 preloaded samples offers fully automated operation for more than 24 hours. The Autoloader also encloses the state-of-the-art cooling system and overpressurized holder chamber for longer sample lifetime under ambient conditions and prevents filter contamination. DRI 2015 series 2 with Autoloader is equipped with easy-to-use software to control the instrument and to enable time-efficient and reliable OC/EC analysis.

Autoloader is an optional upgrade.

The optional high sensitivity (HS) module with the triple sample area size improves the minimum detection limit.

DRI 2015 Series 2 coupled with Photonion‘s mass spectrometer Photo-TOF-MS offers a new powerful analysis of quartz fibre filter samples for bulk carbonaceous particulate matter (PM) constituents and chemical speciation to the molecular level without sample preparation.

The DRI 2015 Series 2 provides laboratory quantitation, and speciation of organic carbon, elemental carbon and brown carbon and is the best instrument for:

• Detailed ambient air quality monitoring
• Climate research
• Public and occupational health study
• Marine and air transport pollution monitoring
• Particulate matter speciation trends
• Particulate matter source apportionment
• Carbonaceous material analysis

7-WAVELENGTH OPERATION

405, 445, 532, 635, 780, 808, 980 nm operation in both transmission (TOT) and
reflection (TOR) mode by default

MEASUREMENT RANGE

0.1 to 1000 µg carbon/cm², depending on carbonaceous composition

MINIMUM DETECTION LIMITS (using high sensitivity HS module in brackets)

• Total OC: 0.10 µg/cm2 (with HS: 0.03 μg/cm²)
• Total EC: 0.08 µg/cm2 (with HS: 0.02 μg/cm²)
• Total Carbon: 0.18 µg/cm2 (with HS: 0.06 μg/cm²)

DATA REPORTING INTERVAL

1 second

Thermal-optical protocols supported:

• IMPROVE_A
• EUSAAR_2
• NIOSH
• can be programmed to emulate any other protocol

INSTRUMENT TEMPERATURES

• Sample oven: programmable from 45 to 900°C with a maximum heating rate of 250°C/minute
• Oxidation oven: 900°C
• Temperature accuracy: ±5°C or 1%, whichever is greater

Support Gases:

• Ultra-high purity (UHP) helium (hydrocarbon-free, >99.999% purity)
• 10% oxygen in UHP helium
• 5% methane in UHP helium
• Compressed air

• LABVIEW-Based with software tools: BrC, Carbon 2015, CDI.

• Temperature range: 10 – 40 °C
• Relative humidity range: 30 – 80 %
• IP protection: IP20
• Indoor or sheltered use

• DRI 2015 Series 2 dimensions: 65 x 92 x 41 cm (26 x 36 x16 inch)
• DRI 2015 Series 2 weight: 50 kg (110 lbs)
• DRI with autoloader dimensions: 65 x 92 x 56 cm (26 x 36 x 22 inch)
• DRI with autoloader weight: 59.1 kg (130.3 lbs)
• Chassis and front plate material: aluminum
• Electrical power supply: 100 – 240 V~; 50/60
• Allowable electrical supply voltage fluctuations: 90 – 264 V~
• Power consumption: 2000 W maximum
• Degree of protection against electric shock: Class I equipment
• Transient overvoltage protection: overvoltage category II
• Pollution degree: 2
• Laser classification: Normal operation: Class 1 Laser; Service mode (protection cover removed): Class 3R Laser

• 3x USB 2.0 Type-A – back panel
• 1x PCIe card – back panel

AUTOLOADER (an optional module):

• Number of samples: 50
• Autoloader dimensions: 38 x 38 x 32 cm (15 x 15 x 13 inch)
• Autoloader weight: 9.1 kg (20.1 lbs)
• Sample cooling system: yes (lower than 20°C)
• Overpressured sample chamber: yes
• Fully automated operation: ≥24h