TESTO 420 - 1 Contents; Table of Contents

1 Contents
3
1 Contents
1 Contents .......................................................................................... 3
2 Safety and the environment ............................................................. 5
2.1. About this document ....................................................................... 5
2.2. Ensure safety ................................................................................... 6
2.3. Protecting the environment ............................................................. 6
3 Specifications .................................................................................. 6
4 Technical data ................................................................................. 7
5 Product description ....................................................................... 10
5.1. Overview ........................................................................................ 10
5.1.1. Measurement setup ............................................................ 10
5.1.2. Overview of testo 420 ......................................................... 11
6 First steps ...................................................................................... 13
7 Using the product .......................................................................... 15
7.1. Switching Bluetooth® on and off .................................................. 15
7.2. Settings for the measurement ....................................................... 16
7.2.1. Damping (Gliding Average) .................................................. 16
7.2.2. Hood Calibration ................................................................. 16
7.2.3. Zeroing Interval (Automatic Zeroing) ................................... 16
7.3. Volume flow measurement setup .................................................. 17
7.4. Measuring ...................................................................................... 20
7.4.1. Volume flow measurement .................................................. 20
7.4.2. Pitot tube measurement ...................................................... 20
7.4.3. Differential pressure measurement ..................................... 21
7.5. Saving ............................................................................................ 21
7.6. Transferring measurement data to the PC .................................... 22