DMM, Dekati® Mass Monitor, is a real-time instrument for diesel and gasoline vehicle PM (Particulate Matter) emission measurements. Used either with a tailpipe sampling system or existing CVS tunnel it provides second-by-second information about vehicle PM mass emission. Since the instrument is intended for daily routine usage special attention has been paid for usability issues. Ease of use, reliability and integration to test cell information and data logging systems have not compromised the accuracy and sensitivity of this system. DMM is developed so that the detection limit is as low as 1 µg/m3, time response 2-3 seconds and repeatability is better than with gravimetric measurement.

Application: Automative

DMM is designed for automotive PM emission measurements, and in this field it can be used for all development and routine measurement purposes.

• After treatment device development – simultaneous tailpipe measurement, upstream and downstream of catalyst or DPF for real-time efficiency measurements
• Engine development and ECU tuning – see the results immediately
• Raw exhaust or CVS tunnel measurements, steady state, transient and on-board testing

Dekati DI-1000 Engine Diluters

The Dekati® Diluter DI-1000 is a low-cost, simple and easy-to-operate device for diluting aerosol and gaseous samples from any source. The simplicity and robustness of the all stainless-steel design have made it a widely renowned choice for dilution of combustion aerosols.

The nominal dilution ratio for a single Dekati® diluter is 1:8. Every Dekati® diluter is individually calibrated with traceably calibrated flow and pressure sensors and provided with an individual calibration certificate and data sheet.

Dekati DEED Engine Exhaust Diluter

DEED is an all new PMP-conform engine exhaust conditioning system. In contrast to multi-stage dilution systems in general, DEED is a simple, easy-to-use system that conditions the sample precisely and in a repeatable manner every time. DEED fulfills all requirements and recommendations of the upcoming exhaust fine-particle measurement legislation (PMP).

The main design criteria of the DEED have been utmost simplicity, ease of use and reliability. It is extremely easy to operate: switch on, warm up and go! No special user training is required to operate the system.

One of the other ideas kept in mind during the design of the DEED has been to minimise particle retention inside the system. This directly leads to less service needs and minimum instrument downtime.

Dekati FPS-4000 Fine Particle Sampler

The Dekati® Fine Particle Sampler is a guaranteed solution for diluting and conditioning aerosol and gaseous samples for measurement instruments. The two stage dilution system features unmatched versatility with applications reaching from automotive pre- and post after treatment measurements to nucleation studies.

Advantages

• The most versatile sampling system commercially available – Single device for all dilution tasks
• Can be connected pre- and post after treatment systems with adjustable dilution ratio – Increase efficiency and repeatability by using the same setup in all measurement locations
• Can be integrated to existing data logging systems – Save time and money with easy data collection
• Real-time dilution ratio calculation and data storage
• Adjustable dilution ratio and dilution temperature
• Control of all features from a user-friendly PC-software
• Sophisticated handling of volatile vapours
• Removal with heated dilution
• Nucleation tendency studies with cooled dilution and a residence time chamber
• Removal with Dekati® Thermodenuder
• Calibrated with traceably calibrated gas and pressure flow meters
• Extremely low losses – no loss correction needed
• Particle residence time within the system < 0.5 seconds
• Particles travel on a straight line, no bends or moving parts

DGI-1570 (Dekati® Gravimetric Impactor) is a cascade impactor designed for measuring particle size distribution from engine exhaust. It is a gravimetric impactor which can replace a standard filter holder and is therefore easy to add to existing emission measurement systems.

In DGI the size classified particles are collected on Ø47 mm substrates and analysed gravimetrically or chemically after the measurement. The nominal sample flow rate is 70 lpm which enables high sample yield even during short periods.

In standard setup the DGI size classifies particles into 5 size fractions with stage cutpoints of 2.5, 1.0, 0.5 and 0.2 µm. In modified setup two lowest stages are removed and the backup filter collects particles smaller than 1 µm. The backup filter size is 70 mm in diameter.

The Dekati® Cyclone is an EPA-standard cyclone for removal of large particles (10um) from a sample stream. The cyclone can be used in high temperatures (600 deg C) due to the all-stainless steel construction.

Manufactured according to EPA standard 201A, with standard isokinetic nozzles available as accessories, the Dekati® cyclone is a highly durable addition to any sampling line where removal of large particles is needed. The cyclone can also be used in an out-stack configuration with heaters, also available from Dekati as accessories.

The cyclone is provided with an excel-sheet, which can be used to easily calculate the cyclone cut-point in operating conditions according to the EPA standard 201A.

Application: Manual Stack Testing

The Dekati® Cyclone can be used in any application, where particles larger than 10µm need to be removed. The main application for cyclones is in stationary source measurements, where the concentration of large particles in the flue gas may be very high. With the Dekati® cyclone, these particles can be efficiently removed to protect the measurement instruments and to avoid contamination of the sample line.

The Land Model 4500 MkIII has reset the industry standard on compliance opacity and dust concentration measurement. Combining the unique features of three patented technologies, the 4500 MkIII achieves the highest available specification for the principal performance parameters, as defined by the internationally recognized ASTM Standard B 62161. These industry-leading features makes the MkIII the most accurate opacity monitor available today. Its excellent sensitivity makes it ideal for all current or future requirements in opacity and dust concentration measurement.

Compliance Applications

• US EPA 40CFR60 Sections 13, 17 and App. B PS-1
• US EPA Proposed 40CFR60 App. F Procedure 3
• ASTM Standard D6216

Industrial Applications

• Boilers
• Heaters
• Furnaces
• Kilns
• FCC’s
• Incinerators
• Dust Collectors

• Flood LED (US Patent #5617212)
• LED Light Source (US Patent #6781695)
• Retro-reflector (US Patent #7429112)
• Single Hand Operation
• Simple Installation
• Dual Function Menus (Text and Icons)
• Easy to Read Display
• Built in Audit Jig
• Local Keypad (Initiate Audit)
• Local Display (View Results)
• Adapter Flanges
• Air Purging Accessories