Pest Insects Control Air Curtains

June 12th, 2014 by Acmas No comments »

Air curtain is a device that is used for cooling, drying and cleaning within various manufacturing lines and other processes. By using compressed air as their power source, a balanced sheet of airflow stretches across the full length of the Air Curtain. The Air Curtain is used extensively in many industrial as well as commercial application areas to keep dust, contamination or even flying insects/pests out by creating forceful turbulence.

Pest/insect control Air Curtains, sometimes called “Fly Fans” are used in

Food processing plants
Dairies and bakeries
Bottling plants
Restaurants and school cafeterias
Supermarkets
Hospitals and Pharma industries

And other areas where the control of flying insects is required. The powerful stream of air that is produced by Air Curtain/Fly Fan is an excellent deterrent to insects. Sanitation maintenance applications require these Air curtains/Fly fans that prevent airborne insects from entering. For fly and insect control, the Air curtain projects the high velocity air jets across the opening, deflecting and prohibiting the entrance on unsanitary insects, thereby maintaining sanitary conditions. The Air Curtain is equally effective either mounted horizontally or vertically.

For the pest/insect control the Air Curtains can be mounted on either inside or outside of the doorways. It is very important that the entire doorway be covered so that there are no gaps for the insects/pests to enter.

Inside of the doorway; inside mounted unit helps to control the building’s climate in the winter by stopping the influx of cold outside air and preventing airborne insects.
Outside of the doorway; when the building contains odors which are attractive to flying insects it is recommended that the Air curtain be mounted on the outside.

The most effective Air Curtain design for insect control has a nozzle that can angle the air stream away from the area to be protected. An angle of about 20 degree from the vertical is usually optimal.

For this application i.e. Pest/insect control which requires maximum protection, it is common and widely accepted to use a more powerful Air curtain in order to achieve the necessary level of protection.

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Clean Room Pass Box

June 11th, 2014 by Acmas No comments »

Pass Boxes: Ultraviolet-Bathed Portals used for passing potentially contaminated items out of the laboratory.

Pass box is a kind of laboratory equipment which is used for transferring the materials from and into the Clean Room or the uncontrolled environment to the controlled environment. Controlling the ingress of particulate contamination into Clean Rooms and other controlled environments is paramount in order to maintain the integrity of products and processes.

Personnel traffic is the most important factor which should be controlled. Pass Box allows materials to be transferred into the controlled environment without actual personnel movement. Pass Box may also be used to protect the external environment from egress (the act of coming and going our) of contamination, for example, in biological safety laboratory applications.

Pass Box is equipped with the UV lamp which is used for sterilization/bacteria control. Pass box is provided with two interlocked doors, when one door is open the other door cannot be open, in this way it prevents the direct contact between the connected areas. A Reliable Interlock System prevents the two opposite doors of the Pass Box from being opened at the same time, to maintain thestability of the Clean Room atmosphere.

Salient Features of Pass Box

Compact
Cost-effective
Corrosion resistance
Good quality raw material

Major application areas

Factories
Laboratories
Drug & Pharma industries
Research and development laboratory

Pass Box allows laboratory personnel to stay within the Clean Room instead of moving to different parts of the lab to fetch tools or materials, therefore eliminating a potential cause of contamination. When a door of a Pass Box is opened, a Laminar Air Flow begins inside to safeguard the cleanliness of the materials and of the Pass Box interior. Some types of Pass Box include built-in high velocity showers of HEPA-filtered air that spray materials entering or exiting the Clean Room. Optional Pass Box fixtures include Fluorescent Light Tubes.

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PAR and Photosynthesis

June 11th, 2014 by Acmas No comments »

PAR stands for Photosynthetically Active Radiation; it represents the fraction of sunlight with a spectral range from 400 nm to 700 nm, usually expressed in µmol (photons) m^-2 s^-1though it is also expressed in micro Einsteins OR it is the amount of light which is available for Photosynthesis. “Photosynthetically active” means the portion of the spectrum that plants need for Photosynthesis.

A measure of PAR is a measure of the amount of those wavelengths available to plants. In the process of Photosynthesis, plants use energy from sunlight to convert carbon dioxide and water into molecules of sugar (the simplest units of food). They need a certain threshold level of PAR to do this, which differs for different species of plants.

Photosynthetically Active Radiation (PAR) is measured by a Silicon Photovoltaic Detector.

This spectral region corresponds more or less with the range of light visible to the human eye. Photons at shorter wavelengths tend to be so energetic that they can be damaging to cells and tissues, but are mostly filtered out by protective compounds in leaves when plants are grown in the presence of UV light. Photons at longer wavelengths do not carry enough energy to allow Photosynthesis to take place.

PAR is needed for Photosynthesis and Plant Growth.PAR measurements are also used to calculate the Euphotic depth in the ocean. In oceans and lakes, the limits of PAR mark the lower boundary of the Euphotic Zone. Below that depth, plants can’t photosynthesize more food than they use up in respiration. How far PAR reaches depends on the clarity of the water.

Increase in PAR enhances the Light Reactions of Photosynthesis before reaching a saturation point. Beyond that saturation point, any further increase in PAR will not result in more light-fixation. The photosynthetic response to different levels of PAR varies with plant species and leaf position. Shade plants and shaded leaves harvest PAR more efficiently at low light levels but less efficiently at high light levels compared with sun plants and sunlit leaves. Light levels measured by PAR are very useful in agronomic and agricultural research.