Range Selection Procedure

Always start with the restrictor plate off - that's called Range 22 for the 22" diameter inlet. Give the speed control a quick half turn to get the motor moving then QUICKLY turn the control DOWN if required. As you increase the fan speed, the Room Pressure gauge will rise. If the room is quite tight, it will rise very quickly. (Never let the Room Pressure rise above 60 Pa.)

Range Selection When Conducting A Single Point NFPA Test:

The general rule regarding range selection is that the motor must be running at least at half speed. If the motor is running slowly, change to a more restrictive range so the highest possible flow pressure can be measured for the greatest accuracy.

The computer will warn you if the flow pressure is too low. If necessary, keep changing to a lower and lower range (more and more restrictive) until the Flow Pressure is much greater than the Room Pressure.

Range Selection When Conducting a Multi-Reading Test:

The ISO procedure and sometimes the testing of relief vent capacity must be done using Multi-Point Readings. This is normally done at pressures starting at 60 Pa down to 10 Pa of Room Pressure. Taking 12 readings roughly equally spaced with the greatest concentration of readings at the lowest room pressures will yield t he best results.

The general rule regarding range selection is to start with the blower running at maximum speed on the 60 Pa reading. The new software will allow multi-range readings to be taken but this takes more time.

Cannot Achieve Desired Room Pressure with Plate Off

Each Door Fan blower is capable of measuring about 10 square feet of leakage area at a room pressure of 10 Pa. If the room to be measured has more leakage than this, there are two options:

Option #1:

Use a second blower to produce more flow and add the flow readings. Do NOT add flow pressures,

 

they are not additive! Use the multi-blower feature of your software.

Option #2:

Instead of taking the Room Pressure up to 10, test at a lower pressure. The computer will advise

 

of the amount of error possible.

Option #3:

Have leaks sealed until the proper Room Pressure can be obtained. Inspect to ensure that all

 

dampers and doors are closed.

2000 Fire Door-Fan Manual

updated 2002-05-28

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Canon 2000 manual Range Selection Procedure, Range Selection When Conducting a Single Point Nfpa Test
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2000 specifications

The Canon EOS 2000D, also known as the Rebel T7 in some regions, is an entry-level DSLR that caters to beginners and amateur photographers looking to explore the world of digital photography. Launched as a successor to the EOS 1300D, the 2000D brings a host of features and technologies that make it an appealing choice for those stepping up from smartphone photography.

One of the standout characteristics of the Canon 2000D is its 24.1-megapixel APS-C CMOS sensor. This high-resolution sensor enables users to capture stunningly detailed images with vibrant colors and rich tonal range. Coupled with the DIGIC 4+ image processor, the camera delivers improved performance in terms of image quality, low-light capability, and overall processing speed.

The Canon 2000D features a 9-point autofocus system that includes one cross-type point, helping users achieve accurate focus on subjects. While this autofocus system may not be the most advanced in the market, it is sufficient for general photography tasks, including portraits, landscapes, and even some action shots.

The camera boasts a 3-inch LCD screen, which provides a clear interface for composing shots and navigating settings. Although it lacks a touchscreen, it offers straightforward usability that appeals to novice photographers learning the ropes of DSLR operation. The optical viewfinder with approximately 95% coverage allows users to view scenes through the lens for precise framing.

For those interested in videography, the 2000D offers Full HD 1080p video recording at 30 frames per second. While it may not excel in advanced video features, it provides a solid entry point for hobbyists looking to experiment with video content. The presence of built-in Wi-Fi and NFC capabilities allows for easy sharing of images and remote control of the camera via a smartphone app, enhancing the overall user experience.

Additionally, the Canon 2000D supports a range of Canon's EF and EF-S lenses, providing users with the flexibility to explore various photography styles. Its compact and lightweight design makes it highly portable, making it a great companion for travel and everyday photography.

Overall, the Canon 2000D is a versatile and user-friendly DSLR that strikes a balance between image quality, functionality, and ease of use, making it an excellent choice for those embarking on their photographic journey.
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