Smoke Studies and Airflow Visualization Studies using Ultrasonic Foggers
Portable Smoke Studies Fogger for Fume Hoods and Airflow Hoods. Find the highest quality SMST-12 smoke study fogger. Request a quote for our smoke studies fogger used in sterile rooms for visualization studies of airflow turbulence. The portable smoke study fogger is used in smoke studies with DI Water (De-ionized water), Sterile water or WFI (Water for Injection) water to generate about 0.5 cubic meters of fog per minute. The SMST-12 is a low cost, ultrasonic fogger that operates for a typical 45 minutes per water fill cycle. The SMST-12 fogger produces a constant fog density, thus the fog volume produced is also constant, but the SMST-12 allows velocity control via push button velocity controls on the fogger interface, and also allows remote control of fog on/off and velocity control via optional wireless control. The fog vapor is composed of water droplets that are about 8-10 microns in diameter; thus as the fog vapor travels thru the airflow, it begins to evaporate. The visual fog evaporates after about 6-7 feet. No particle contaminants are created or left in the airflow. No cleanup is required other than a general wipe down of pure moisture. And the fog is composed of the same elements that we breathe, so walking thru a Smoke Studies Fogger is nearly identical to fog encountered in weather. Ultrasonic foggers use de- ionized water, sterile water or water for injection; thus the water is quite pure. The fog can easily visualize turbulence and airflow patterns in Fume Hoods, Airflow Hoods or small Glovebox. Balance of air pressure can be visually described between two clean areas, such as a barrier isolator and sterile room. Bio-safety cabinets and glove boxes can be tested for proper airflow.
SMST-12 Smoke Studies Fogger ≈ 0.5 cubic meters fog / minute, ≈ 45 minutes operation, ≈ 6-7 feet fog visibility with one 80mm fog outlet, Accessories optional
Table of Contents
The SMST-12 Smoke Studies Fogger for Airflow Visualization Studies will support low cost requirements for airflow visualization studies and smoke studies in small area environments. This small, portable, easy to use smoke machine will support your requirements to test airflow in fume hoods, airflow hoods, small glove boxes and similar sized volumetric areas to visually describe airflow patterns, airflow turbulence or uniformity in controlled air flows. Most Engineers and technicians in the pharmaceutical industry use testing guidelines, such as ISO 14644-3, Annex B.7 Airflow Direction Test and Visualization. Another guideline is USP 797 Insitu Airflow Analysis. Semiconductor companies are now starting to use the same ISO 14644 guidelines for Smoke Studies Fogger airflow tests. The SMST-12 Smoke Studies Fogger can also be used to evaluate how fast a Smoke Studies Fogger recovers from a particle challenge, as guided by ISO 14644-3, Annex B12 Airflow Recovery Test. Polystyrene latex spheres are typically used specific size peaks of 0.5 micron, 1 micron or 2 microns. The SMST-12 ultrasonic Fogger is used to create the aerosol particle challenge into the sterile room or ISO suite, then air particle counters are used to monitor how quickly the Smoke Studies Fogger returns to normal after introduction of the particle challenge.
Ultrasonic DI Water foggers can be easily compared in fog performance per dollar cost by calculating the actual fog density over time!
Ultrasonic foggers are normally built with 8 to 40 piezo devices. The SMST-12 uses 12 high performance piezos generating 76 ml of fog density and 0.5 cubic meters of fog per minute. As a comparison the AFM40 uses 40 high performance piezos operating at 2 cubic meters of pure fog per minute. The SMST-12 fog travels about 6-7 feet in a typical Smoke Studies Fogger airflow velocity of 70 fpm with a typical humidity of 40%, while the AFM40 fog travels a typical 12-15 feet using dual 80mm fog outlets. It is the fog density that controls the fog volume and visual distance of any fogger. As the fog travels through the airflow, it gradually evaporates to the same air we breathe, making the fog quite safe to work in.
Smoke Studies Fogger, SMST-12
- 12 piezo devices produce 0.5 cubic meters of fog per minute for typical 45 minutes operation
- About 0.100 milli-liters per minute of fog density provides a typical 6-7 feet visual airflow
- Easy Fill Water Port with a fill level of 4.5 liters of Deionized water, sterile water or water for injections
- Water Level Fill Indicator is provided on left panel
- Operating instructions are provided on the side panel
- Power On/Off is provided
- Drain Plug with threads is provided
- Carry the fogger using the top 1/2″ edge grips
- Polypropylene enclosure offers a clean, lightweight enclosure
- Optional Fog Curtain Rake converts fog stream output to a wide fog pattern, plugs into Fog Hose
- Optional Remote Control Key Fob to control a fogger inside a Barrier Isolator
- Optional Carry and Storage Case
- 80mm Fog Hose
- Power Supply (120VAC/60Hz or 220VAC/50Hz, 100VAC/50Hz) included along with a power cable for your voltage
- Easy to use ultrasonic fogger requiring a typical 30 seconds to fill water and start fogging
- Instant On fog production and control of fog velocity
- Paperless operation with Instructions and Applications labeled on side of enclosure, as well as by PDF Instructions
Smoke Studies in Pharmaceutical ISO Suites, Barrier Isolators, Bio-Safety Cabinets, BSC, Glove Box, Fume Hood, Airflow Hood, Smoke Studies Fogger, DI Water Fogger
- Supports ISO 14644-3, Annex B.12 airflow recovery tests
- Supports airflow visualization tests guided by ISO 14644-3, ANNEX B.7
- Supports airflow visualization tests for NSF 49 National Safety Foundation
- Supports USP 797 Insitu Airflow Analysis in ISO suites, sterile rooms and barrier isolators
- Supports SEMI Standards Smoke Studies Fogger Guidelines
- Airflow balancing
- Leak detection in ducts
- Laminar flow tests
- Wet bench exhaust optimization
- Personal safety exhaust verification
- Chemical process equipment ventilation tests
- Pressure balancing between rooms and spaces
- Visualization of airflow patterns and turbulence
Specifications, SMST-12 and AFM40 Smoke Studies Fogger
| Metric | SMST-12 Smoke Studies Fogger | AFM40 Smoke Studies Fogger |
| FOG View Time | about 40-45 minutes | about 40 minutes |
| FOG Metrics | ≈ 0.5 cubic meters / minute, Velocity control | ≈ 2.0 cubic meters per minute, adjustable fog volume and adjustable flow rate |
| Total FOG Output | ≈ 22.5 M³, pure fog, during 45 minute cycle | ≈ 80 M³, pure fog, during 40 minute cycle |
| Fog Density (ml/minute) supports visible fog distance | ≈ 76 ml water consumed / Min., converted to 8-10 micron fog droplets | ≈ 225 ml water consumed / Min., converted to 8-10 micron fog droplets |
| Viewing Fog Distance | ≈ 6-7 feet visible airflow distance | ≈ 13-15 feet visible airflow distance |
| Fog Generation | Ultrasonic Fog using DI water, sterile water WFI water | Ultrasonic Fog using DI water, sterile water WFI water |
| Class of Smoke Studies Fogger Use | Class 10 to 10,000 | Class 1 to 10,000 |
| Compatible Guidelines | USP 797 Insitu Airflow Analysis, ISO 14644-3 Annex B7, Federal Standards 209E in Semiconductor Smoke Studies Fogger | USP 797 Insitu Airflow Analysis, ISO 14644-3 Annex B7, Federal Standards 209E in Semiconductor Smoke Studies Fogger |
| Typical Use | Fume hoods, airflow hoods, small glove boxes | Smoke Studies Fogger, Sterile Rooms, ISO Suites, Medical Rooms |
| Water volume | 4.5 liters | 13.5 liters |
| Usable Water Volume | 3.42 Liters | 7.5 Liters |
| Method of Operation | Push Button Control, optional Wireless Control | Touchpad Control or optional Wireless Remote Control |
| Method of Movement | Hand Carry Enclosure | 2 Carry Handles |
| Liquid Weight | 4.5 L Kg Water, 9.9 lbs | 13.5 L Water, 29.0 lbs |
Voltage & Current Requirements | 110 VAC, 50/60 Hz, 10A | 110VAC, 50/60 Hz, 10A |
| Optional Voltage | 220VAC, 50/60 Hz, 15A; 100VAC 50HZ, 15A | 220 VAC, 50/60 Hz, 10A; 100VAC 50HZ, 10A |
| Dimensions, Inches | 14.75″ T x 15″ L x 12″ W | 11.5″ H x 12.5″ W x 23.5″ L |
| Empty Fogger Weight | 12.5 lb. | 43 lbs |
INFORMATION
The Smoke Studies Fogger is often called a smoke generator or smoke machine by technicians. Although often referred to as a smoke generator, the output is a pure fog and does not require any cleanup after use. Operating instructions are noted on the right panel of enclosure.
Theory of Operation: Ultrasonic piezos operating about 1.5MHz to 1.7MHz using DI water or Pharmaceutical WFI Water. Use of any other liquids or chemicals will void the warranty.
The transducer life is up to 1000 hours depending on liquids used. the ultrasonic device is protected from overheating by using a water level interlock to shut power off to the ultrasonic transducer in a low water condition. The water level sensor will interrupt the input voltage to the transducer module, should the water level drop to a low level. This ensures long life and reliability of the transducer.
Applications and Maintenance
- The smoke Study Fogger should not be used around live electrical operation.
- After a smoke study is completed, drain all the water using the Drain Plug of SMST-12. Optional Air Drier is provided to speed up the evaporation of all water in the water cavity, after a smoke study is completed.
- It is important to evaporate all water in the water cavity so as to prevent algae from growing in the water cavity when water is left in the cavity.
- The Smoke Studies Fogger fogger is intended to be used on a flat surface, on its feet. Tipping the fogger with water in the reservoir will damage the fogger. The Smoke Study Fogger is meant to operate with a prescribed level of water fill. If you overfill, no fog will be produced. If you underfill, the piezos may not turn on due to low water condition. Read the Instructions before operation!
- Always operate electrical products in a safe manner. The Smoke Study Fogger emits a humid mist, and therefore should not be used in or around electrical operating systems.
Portable Fogger, SMST-12 Smoke Studies Fogger
The SMST-12 provides portability and can be carried using the edge grips on top of the fogger on each side of the fogger, where the 1/2″ finger grips are located. While carrying the fogger in this manner, the water cavity must be empty. Should you need to move the fogger on a table with water in the water cavity, gently mover the fogger with slow movements, so that water does not splash inside the fogger.
Airflow Visualization Considerations
Nitrogen-DI-Water Foggers provide a very dense, paper white visible fog, Liquid Nitrogen vapor is combined with water vapor to form the clean fog, typically a 45 minutes operation. The fog output is adjustable in velocity and amount of fog released, controlled by a mechanical liquid nitrogen valve, and a touchpad to adjust speed of fog output. Wireless Controls using FOB is also available. The AP35, AP50, AP100 and AP150 Nitrogen-DI-Water Foggers are demonstrated in the Sistema Lab, and all ship from Germany direct to your dock. * Use protective Hand Gloves, Face shield and smock when handling Liquid Nitrogen, and always follow your local safety guidelines when handling liquid nitrogen Use DI Water, Sterile Water or WFI Water |
SMST-12 Smoke Studies Fogger produces about 0.5 cubic meters fog/minute at 76 ml fog density with 6-7 feet visible fog, using Di Water, Sterile Water or Water for Injection. Typical operation time is about 40-45 minutes typical operation. You can refill and restart with 40 F water temperature. AFM-40 Smoke Study Fogger produces 2.0 cubic meters fog/minute providing about 12-15 feet of fog viewing, using Sterile w3ater, DI Water or WFI Water. Typical operation is about 35 minutes, and you can refill with 40F water and restart. Adjustable fog volume and adjustable airflow is controlled via touch pad buttons or wireless Key Fobs and remote control.
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