Sampling & Dilution
Diluters
Dekati® DEED
The Dekati® Engine Exhaust Diluter (DEED) is a simple, easy-to-use engine exhaust conditioning and dilution system. It meets all the requirements of EURO 5b/6 legislations for solid particle number count applications, but offers the flexibility to be used for traditional, particle mass measurements as well.
Dekati® eDiluter™ Pro
The Dekati® eDiluter™ Pro is a portable, two-stage dilution system that is optimized for combustion aerosols, and has an adjustable dilution factor ranging from 1:25 – 1:225. Dilution parameters are monitored on its integrated LCD display and a rotary knob allows the user to fine tune the first stage dilution air temperature. Built-in sensors constantly monitor the dilution process and compensate for any fluctuations in the sample, ensuring the selected dilution factor remains constant under all conditions.
Dekati® High Pressure Diluter DEED-300
The Dekati® DEED-300 is an aerosol diluter capable of sampling from pressures of up to 1 bar in standard configuration, and up to 10 bars in custom configurations. Available as a single-stage 4:1 diluter, or as a two-stage 40:1 diluter, it features low losses and good time response. The DEED-300 can also be heated and is often used in front of additional dilution and sample conditioning devices such as the DEED-100 when measuring high temperature combustion processes.
Dekati® eDiluter™
The Dekati® eDiluter™ is a portable, two-stage dilution system that is optimized for combustion aerosols. It comes standard with a fixed 1:60 dilution factor but can also be ordered with a custom dilution factor in the range of 1:25 – 1:225. Dilution parameters are monitored on its integrated LCD display. A rotary knob allows the user to fine tune the first stage dilution air temperature. The Dekati® eDiluter™ is fully compatible with both Dekati® and other commercially available particle measurement instruments.
Dekati® Diluter DI-1000
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.
Dekati® Axial Diluter DAD-100
A simple and cost-effective dilution tool for any dilution task.
Especially designed for use with Dekati instruments, the DAD-100 is very simple to install into any sampling or measurement system. All-stainless steel design makes it also possible to heat the diluter up to 500°C.
DIL 540
The DIL 540 Dilution System is a battery operated version of the popular DIL 550 series diluters and is available in either 10:1 or 100:1 dilution ratio versions at 28 l/min
ADD 536
The Aerosol Distribution and Dilution System, ADD 536, is used in conjunction with an aerosol generator and provides a uniform test aerosol from six different outlet ports with a defined source flow which can be used for verification of operating room protection.
Topas VDS 562
The Topas VDS 562 Variable Dilution System was developed so that users can lower the concentrations of highly concentrated aersol samples using a single diluter. The instrument can be calibrated for vaious flow rates between 28.3 l/min-100 l/min, and dilution ranges up to 1:100,000 at the time of purchase. The VDS 562 features negligible pressure drop and no external dilution air requirement.
Topas Self-Adjusting Aerosol Diluter DIL 540/C
The aerosol diluter DIL 540/C self-adjusts to maintain the desired dilution factor despite changing operating conditions. This mobile unit is particularly useful for the verification of test aerosols used for testing cleamroom installations.
Dilution System for Aerosols DIL 550
The dilution system is designed to accurately dilute aerosols to produce a defined particle concentration and carry out certain measuring tasks.
The main application of the dilution system DIL 550 is in the verification of test aerosols for testing clean rooms. By using the dilution system DIL 554 upstream of a particle counter, e.g. LAP 322, a dilution factor of up to 100 can be achieved. Thereby particle concentrations of >106 Particles per cf (1 cf = 28.3 l) can be reduced to 104 cf–1. This will put the particle concentration well within the range of standard particle counters.
Dilution System for Aerosols DIL 554
The dilution system is designed to accurately dilute aerosols to produce a defined particle concentration and carry out certain measuring tasks.
The main application of the dilution system DIL 550 is in the verification of test aerosols for testing clean rooms. Compared to the DIL 550 the innovative features are an easy-to-clean compact stainless steel housing and a mobil use by battery-operation (optional also wall power supply).
By using the dilution system DIL 554 upstream of a particle counter, e.g. LAP 322, a dilution factor of up to 100 can be achieved. Thereby particle concentrations of >106 Particles per cf (1 cf = 28.3 l) can be reduced to 104 cf–1. This will put the particle concentration well within the range of standard particle counters.
Dynamic Dilution System for Aerosols DDS 560
The Dynamic Dilution System is designed to definitely and reproducibly dilute aerosols according EN ISO 14644 part 3with possibility to adjust the dilution factor.
A simple front panel control knob allows adjustment of the dilution ratio from 5:1 to 370:1at flow ratio from 0.5 to 3.0 lpm.
Conditioners
Dekati® Oxidation Flow Reactor DOFR™
Dekati® Oxidation Flow Reactor, DOFR™, is a constant flow oxidation flow reactor for secondary aerosol (SA) formation studies. The formation of secondary aerosols can take several days in the atmosphere and the purpose of the oxidation flow reactor is to speed up these processes. In the Dekati® DOFR™, the formation processes are accelerated by creating highly oxidative conditions for the aerosol sample and the timescale is reduced from days to less than one minute. The flow through the oxidation chamber is kept constant and laminar, resulting in minimal particle losses. All these features make the DOFR an ideal tool for PAM (Potential Aerosol Mass) measurements and SA formation research.
Dekati® Cyclone
An EPA-standard cyclone for removal of large particles from a sample stream.
The cyclone can be used in high temperatures due to the all-stainless steel construction. The Dekati® Cyclone is manufactured according to EPA standard 201A.
Topas TDD 590
The Model TDD 590 Thermodenuder is designed to remove moisture and volatile particles from an aerosol sample for the subsequent measurement of dry particle size.
DDU Diffusion Dryer DDU 570
The diffusion dryer consists of an Acrylic tube filled with silica gel with 2 caps on its ends and tube connectors. The aerosol streams through 3 screen pipes surrounded by dry silica gel which serves as drying agent.
Because the aerosol does not get into contact with the drying agent there is nearly no loss of particle material.
Neutralizers
Electrostatic Aerosol Neutralizer EAN 581
The electrostatic aerosol neutralizer conditions the charge distribution on test dusts as well as other aerosols for example when evaluating separation techniques such as cyclones, filter s or impactors. Charge equilibrium can be controlled by mixing positive and negative ions in a precise manner.
Controllable generation of ions with separate adjustment of both positive and negative ion sources are provided. No radioactive source is required. It's easy to integrate into existing filter test systems and othe test apparatus.
Sampling
High Performance Sample Tubing with Inert Liner
Particle Instruments supplies this high performance double lined tubing with all net proceeds supporting the American Association for Aerosol Research (AAAR). The tubing is available for ¼”, 3/8” and ½” fittings. The product is a low loss tubing with inert liner that does not shed and has no outgassing.
RFU 564
The Regulated Flow Unit RFU 564 was developed to provide variable adjustable and time-stable air flow rates for both under pressure (intake mode) and over pressure operation (supply mode). The Regulated Flow Unit RFU 564 reduces the need for numerous test stand components (blowers, pipes, valves, flow meters, filters). Accordingly, the installation of aerosol analytical test setups becomes easier and faster.
Sample Switching Unit SYS 520
The Laser Aerosol Particle Size Spectrometer series LAP can optionally measure two different samples by using the Sample Switching Unit SYS 520. The instrument was especially developed for this application and realizes a quick changing between sample flow I, a flushing routine (HEPA-filter) and sample flow II.
Controlling the switching unit is only possible with the aerosol spectrometers series LAP with sample switching option. If you do not have such a LAP 320/U or LAP 321, Topas can install the needed control output in your instrument.
Sampling System for Pressure Lines SYS 525
The SYS 525 is designed to take a representative sample from sources with mean pressures at up to 8 bar. It effectively decouples the pressure from the measuring point and meassuring instrument with minimal change to the aerosol properties.
Rectangular Sampling Probe SYS 529
The sample probes have a rectangular inlet which is gradually reduced to a circular tube connector.
The design of the probe is based on the ISO CD 14644, Part 3 which defines a maximum width to height ratio of 1:6.
The manufacturing process ensures that all internal surfaces are polished to avoid material deposits and their potential to create false test results.