Table Of Contents; Content - TESTO 521 Instruction Manual

Differential pressure meters
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4

Content

Content
Foreword .................................................................. 2
General notes ........................................................... 3
Content .................................................................... 4
1. Fundamental safety instructions ................................ 6
2. Intended purpose ..................................................... 7
3. Product description .................................................. 8
3.1
Power supply ........................................................... 8
3.2
Controls ................................................................... 8
3.3
Menu overview ....................................................... 10
4. Commissioning ....................................................... 12
4.1
4.2
Connecting the mains unit ...................................... 12
4.3
Connecting probes/sensors .................................. 13
5. Basic operating steps ............................................. 14
5.1
Switching on / off ................................................... 14
5.2
Menu navigation ..................................................... 15
6. Menu functions .......................................................... 16
6.1
Measurement site ................................................... 16
6.2
Memory .................................................................. 17
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.3
Probes ................................................................... 21
6.3.1
6.3.2
6.3.3
6.4
Input....................................................................... 24
6.4.1
6.4.2
6.4.3
6.4.4
6.4.5
6.4.6
6.4.6
Man. / Auto. / Fast ................................................................ 17
Configuration ................................................................... 18
Printing ............................................................................ 18
6.2.3.1 Data transfer ........................................................ 19
Status ............................................................................ 20
Clearing ........................................................................... 20
Surface increment ............................................................. 21
Scaling U/I ........................................................................ 21
F-Reset ............................................................................. 23
Temperature .................................................................... 25
Relative humidity .............................................................. 25
Absolute pressure ............................................................ 25
Density ............................................................................. 25
Cross-section .................................................................. 26
Offset factor (O factor) ...................................................... 26
Pitot tube factor (P factor) ................................................. 26

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