TESTO 645 - Table of Contents; Contents

Contents ........................................................................................................................................... 2
Foreword ........................................................................................................................................... 3
Initial operation .................................................................................................................................. 4
First measurement ............................................................................................................................. 5
Instrument description
-Keypad/ connection assignment ................................................................................................... 6
-Display .......................................................................................................................................... 7
Overview of controls ....................................................................................................................... 8-9
1. Current measurement.................................................................................................................. 10
Switching on, selecting parameter in display ......................................................................... 10
Saving, printing .................................................................................................................... 10
2. Measurement functions 11-13
Freezing readings .................................................................................................................. 11
Maximum readings ................................................................................................................ 11
Minimum readings ................................................................................................................. 11
Multi-point mean calculation .................................................................................................. 12
Timed mean calculation ........................................................................................................13
3. Location selection ....................................................................................................................... 14
4. Parameter settings ................................................................................................................. 15-17
System adjustment (testo 645) ............................................................................................. 15
Adjusting humidity probes .....................................................................................................16
Displaying calculated humidity parameters (td°C; g/m
3
; g/kg; J/g)......................................... 16
Switches CO2 ppm Vol% (testo 445) ............................................................................... 16
Initialising differential pressure probe (testo 445) ................................................................... 17
Activating m/s in differential pressure probes (testo 445) ...................................................... 17
Activates volume flow and sets duct cross-sections
for velocity and differential pressure probes (testo 445) ........................................................ 17
5. Memory settings ..................................................................................................................... 18-21
Overview ............................................................................................................................... 18
Manual saving ....................................................................................................................... 19
Automatic saving ................................................................................................................... 19
Reading or printing memory contents ................................................................................... 20
Clearing memory contents .................................................................................................... 21
2
Contents
According to the conformity certificate, the instruments fulfill 2014/30/EC
guidelines.
©1999 Copyright Testo GmbH & Co.
The software and software structure included in the product testo 445/645 are protected by
copyright laws worldwide.
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