How to keep the positive pressure of Modular clean room

The main purpose of keeping the positive pressure of modular clean room is to ensure the original cleanliness of modular clean room, so how can we keep the positive pressure of modular clean room.

The modular clean room is a simple clean room for the most rapid and convenient building. The modular clean room has a variety of clean grades and space collocation can be designed and made according to the needs of use. Therefore, it is easy to use elastic large installation, short construction period and removable. Therefore, the modular clean room is mainly used in local need of high cleanliness, such as: electronic lcd, circuit board, optics. Food, biological medicine and other fields
Modular clean room positive pressure control needs to pay attention to the following points:
The Modular clean room must maintain a certain positive pressure value to ensure that it is not polluted by the outside environment. It is achieved by making the air supply volume of the purification system greater than that of the return air volume and the exhaust air volume. The dark drop size of the air supply pearl is affected by the sealing performance of the enclosure structure. The static pressure difference between the different grades of Modular clean room and between the clean area and the unclean area should not be less than 5pa. The difference between static pressure and outdoor pressure is not less than 10pa.
The air distribution of Modular clean room is different from that of Air Conditioning Room, it has great influence on cleanliness, so we should set out from the requirement of production technology to cleanliness, according to the principle of economy and the material point of building. When cleanliness is required to be 100, laminar flow layer is selected, and turbulent flow pattern is selected when cleanliness is 1000-100000.
The principle of Modular clean room is that the FFU fan filter unit is filtered by the first line of fresh air by the primary filter, and then by the filter of 99.99 @ 0.3um in the second channel of the high efficiency filter. The whole outlet air surface is fed into the clean shed at a uniform speed of 0.45 m / s / -20%, which makes the clean air flow in a vertical one-way flow, thus ensuring the required cleanliness in the working area.

SOURCE FROM: www.cleanroomffu.com please don’t copy.

What You Need to Know before Buying a Clock

We have always experienced that new technologies come and replace the existing ones, like mobile phones displace BB calls, instant messenger takes the place of letters and telegraphs. However, there are something that remain to stand the test of time, and one of them is the clock in your living room. I am sure everyone has their unique memory about this. The clock that not only tells us the time, but also reminds us the time we are with our family.

On that note let’s talk about how to buy a wall clock, which will accompany us for years. Here are some of the things you need to have in mind before you make the decision.

Where Will You Use the Clock?

If you want a decorative wall clock for your living room, then you need to mind the color, the shape, and the design. As I have just indicated, all clocks tell the time, but the color, the shape, and the design is what changes. You just need to make sure you are getting the right one depending on where you want to use it. For example, an office wall clock might be different with the home wall clock. The decorations added to the clock are what might define the difference. Overall, it depends on the taste and preferences of the buyer; you just need to make sure the decor wall clock matches the intended place of use.

What Would You Need on the Clock?

Probably you want an loud alarm clock to wake you up. You will consider whether it has a snooze button to play with especially when you feel so lazy to wake up. Therefore pressing the button from the time the alarm goes off until the third time so that you rise up and kick-start the day. Or you probably need a unique desk & table clock so that your desk looks organized and you are always aware what time it is. The bottom line is that the clock you buy should serve the purpose. It might not have an alarm but has a reminder so that you can set the important appointments. Or probably you need a office desk & table clock to remind you it`s time to go home but first check to see if the boss has left. For whatever purpose, make sure you buy the right clock.

Lastly but most importantly, when buying a clock, you should confirm the manufacturer to make sure you are buying a good clock. The manufacturers with years of experience have proven to be the best since they have mastered the game.