Upgrade of existing filter test channels

Thanks to the high-resolution light scattering spectrometer Promo^® 3000, the fraction separation efficiencies can be determined with greater ease, speed, reliability, and accuracy. With the aid of patented optical fiber technology, there are practically no particle losses in the sampling lines, as the sensors can be positioned directly at the measurement point.

With the Fidas^®system, Palas^®offers the only optical aerosol spectrometer certified in accordance with EN 12341:1998 and EN 14907:2005 for PM_2.5 and PM₁₀ measurements. The Palas^® aerosol spectrometer Promo® is almost the same in design as the certified Fidas^® system and provides reliable ePM values for filter testing. FTControl from Palas^® is simple, reliable, and fast filter testing software that has been proven internationally. It enables the test procedure to be executed fully automatically in accordance with EN 779, ASHRAE 52.2, and ISO 16890, including the generation of standard-compliant test reports.

The GVT 3000 test rig upgrade is modular and can be adapted to the relevant standards.

• Filter testing in accordance with EN 779:2012
• Filter testing in accordance with ASHRAE 52.2
• Filter testing in accordance with ISO 16890

Extensions/Accessories

Individual components of the GVT 3000 test rig upgrade:

1. Variable aerosol generation: Depending on the standard for testing, Palas^® offers aerosol generators for the dispersion of different dusts (e.g., A 1 - A4, ASHRAE, Aramco, etc.), salts (e.g., KCl/NaCl), oils (e.g., DEHS) and suspensions. All generators are clearly characterized according to the new VDI 3491 and offer the highest dosing consistency in particle size distribution and concentration. Shortening of the measurement time, e.g., through increased dust concentration.

2. Discharge: (ISO 16890): ISO 16890 calls for aerosol discharge using KCl as the test aerosol. Palas^® offers an electrical system, CD 2000, for this purpose, Special advantage: The discharge is easy to switch on and off and is almost maintenance-free.

3. Light-scattering spectrometer: The aerosol spectrometers Promo^® System is based on the same technology as the Fidas^® system certified for PM values. The aerosol spectrometers are characterized by high-resolution measurement of particle size and particle concentration in up to 60 size classes in one measurement range, e.g., 0.2 - 10 µm (four measurement ranges between 0.2 - 100 µm), and deliver ePM values reliably for ePM₁, ePM_2.5, and ePM₁₀.

4. Sampling: Representative sampling connected to the existing test channel, incl. isokinetic probes for raw gas and clean gas measurement points.

5. Automation: Automation of the test rig for the acquisition of sensor data, such as differential pressure and volume flow, as well as controlling the relevant test rig components, aerosol generators, light-scattering spectrometers, dischargers, and ventilators is achieved with the worldwide proven FTControl software in combination with separate plug-and-play test rig control electronics incl. I/O module. Palas^® delivers the measurement transducers for humidity, temperature, barometric pressure, and differential pressure at the filter under test and volume flow set point selection. Components already on the test rig can be integrated into the automation process.

The individual Palas^® components (aerosol generators, dilution systems, and aerosol spectrometers) are coordinated, thus delivering fast, reproducible, and cost-effective measurement results. During pre-delivery acceptance testing and final inspection of the system, Palas^® carries out the necessary tests to provide unmistakable proof of the function of the individual components.