For a complete calibration, take the gauge up to full scale, hold it there for 60 seconds, release the pressure and zero the gauge. Apply positive pressures to the upper port and a negative pressure to the lower port such that changes in atmospheric pressure will not affect the calibration. Record the reference and gauge readings for each point on the table below. Ensure that all zero shift of the reference gauge is removed for each reading.

The Ascending and Descending readings must be taken at the target pressures shown +/-1 Pa if the pressure is below 20 Pa, +/-2 Pa if the pressure is below 50 Pa or +/-5 Pa if the pressure is above 50 Pa. That is to say the readings must be taken at these target points within these limits; these limits do not describe the accuracy required.

60 Pa Analog Room gauge target pressures

 

 

 

 

 

 

 

 

 

 

 

 

Ascending pressure

0

10

14

17

25

35

 

Descending

50

35

25

17

14

10

0

pressure

 

 

 

 

 

 

 

Final pressure

8

12

15

20

30

40

55

250 Pa Analog Room gauge target pressures

 

 

 

 

 

Ascending pressure

0

30

40

60

90

130

 

Descending pressure

180

130

90

60

40

30

0

Final pressure

25

35

50

75

100

150

200

DM-1 Digital Room & Flow gauge target pressures

 

 

 

 

Ascending pressure

0

10

14

17

25

35

 

Descending pressure

320

35

25

17

14

10

0

Final pressure

8

12

15

20

30

40

350

2000 Fire Door-Fan Manual

updated 2002-05-28

Page 48 of 58

Page 48
Image 48
Canon 2000 manual Pa Analog Room gauge target pressures, Ascending pressure Descending Pressure Final pressure

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.