TESTO 645 User manual

Instruction manual en
testo 445 · testo 645
[e-mail] www.Testo-Direct.com

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 functions11-13
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/m3; g/kg; J/g)......................................... 16
Switches CO2ppm 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.
[e-mail] www.Testo-Direct.com

Dear Customer
You have made the right decision by choosing a measuring instrument from Testo. Every year,
thousands of customers purchase our high-quality products. There are many good reasons for this.
1) We offer value for money. Reliable quality at the right price.
2) Considerably longer guarantee periods of up to 3 years - depending on the instrument.
3) With over 40 years of specialist experience we are optimally equipped to solve your measuring
tasks.
4) Our high quality standards are confirmed by ISO 9001 certification.
5) It goes without saying that our instruments bear the CE mark required by the EU.
3
Foreword
6. Instrument configuration......................................................................................................... 22-26
“AutoOFF” power save function ........................................................................................... 22
Setting power supply, with rechargeable battery or battery................................................... 23
Setting date/time................................................................................................................... 24
Setting parameters for absolute pressure and density compensation.................................... 25
Unit selection ........................................................................................................................ 26
Factory reset.............. 26
7. Velocity measurement ............................................................................................................ 27-28
Volume flow funnel (testo 445).............................................................................................. 27
Pitot tube and pressure probe (testo 445)............................................................................. 28
Thermal anemometer probes (testo 445) .............................................................................. 28
8. CO/CO2measurement ........................................................................................................... 29-30
Measuring absolute pressure...................................................................................................... 31-32
Error messages ............................................................................................................................... 33
Technical data............................................................................................................................ 34-35
Ordering data ............................................................................................................................. 36-41
Contents
[e-mail] www.Testo-Direct.com

4
Initial operation
Please read prior to measurement
Do not measure on live parts.
Do not switch instrument on or off with the button
- during instrument configuration
- during automatic saving
Complete automatic saving before connecting instrument to the Comfort software.
If the instrument does not function remove battery and put it in again. The respective error
message is shown in the display. Refer to the information on “Error messages” on page 33 of
the Instruction manual.
Observe storage and transport temperature and max. operating temperature (e.g. protect
measuring instrument from direct sunlight)
When changing configurations (e.g. changing the probe), the instrument should be switched off
because the values specific to the probe can only be read when the instrument is switched on.
The V24 cable (PC connection) can be inserted anytime.
A simultaneous print command is not possible if the PC cable is connected.
Ensure that the contacts are correct in probes with a plug-in head.
The swivel nut in the probe handle should be securely tightened.
Opening the instrument, inexpert handling and use of force cancels your warranty.
Putting in the batteries
9V block battery is included in delivery.
Open the battery compartment at the back of the instrument.
Put in block battery. Observe polarisation.
Close battery compartment.
Refer to “Power supply” Chapter for more information on
alternative power supply, charge, battery quality, charging
procedure.
Observe instrument configuration when using
rechargeable batteries.
[e-mail] www.Testo-Direct.com

5
First measurement
A description of the instrument and an overview of the
controls guarantee a quick introduction.
Note: The measuring instrument must be switched off before a probe
is connected.
You will receive up-to-date readings once a probe is inserted and the
measuring instrument is switched on. However, you will still need to
update or define the data in the instrument:
Date/Time:
Auto Off:
Units:
Some things can only be set via PC software (See Ordering data):
Location name (8 characters)
Log head (24 characters), e.g. your company name -
is also printed when readings are printed.
i
Instrument configuration
[e-mail] www.Testo-Direct.com

6
Instrument description
Keypad/Connection assignment
Prints
On/Off
Saves
Hold Max Min
Mean
Arrow buttons
move the cursor
Return to current
measurement/
location
Confirms menu
setting/
executes function
Connection assignment:
Keypad:
testo 645
Socket 1:
– Temperature probes
(T/C type K/J/S or NTC)
Socket 2:
– Combined probe for humidity
(capactive)
and temperature
(NTC or Ni 10000)
– Temperature probes
(PT100)
RS232: Connection for PC
12V: Mains unit connection
testo 445
Socket 1:
– Thermal velocity probes
(heated wire or ball)
– Vanes (inductive)
– Temperature probes
(Type K/J/S T/C or NTC)
– Differential pressure probes
(piezoresistive)
– Absolute pressure probes
(piezoresistive)
– CO2probe
(2 beam infrared sensor)
– CO probe
Socket 2:
– Combined probe for humidity
(capacitive)
and temperature
(NTC or Ni 10000)
– 3-function probe for
humidity (capacitive),
temperature (NTC) and velocity
(ball)
RS232: PC connection
12V: Mains connection
12V
2
RS232
1
[e-mail] www.Testo-Direct.com

7
The symbols on the top line are explained below
Name of input socket and parameter
Displays reading in line 1
Name of input socket and parameter
Displays reading in line 2
Displays measurement functions
Explanation of symbols:
Counter for the log number in the memory.
When saving manually: number of a measurement saved.
When saving automatically: number of a measurement series.
This counter is needed in order to be able to find single logs or a
measurement series when reading the memory.
Counter for saving a measurement cycle (is only required with
automatic saving).
The measurement cycle in a measurement series can be found.
Manual saving of a single measurement by pressing the save
button .
Automatic saving program has been set up.
Saving is activated by pressing the button.
Symbol for reading contents of memory on display.
Symbol for deleting memory contents
If this symbol appears, the printing function is activated.
The symbol flashes while data is being transmitted. You can
print on the desktop printer by pressing the print button .
Shows capacity of battery and rechargeable battery.
If the inner segment no longer appears (symbol flashes), the
battery has to be changed or the rechargeable battery has to be
recharged. The instrument switches itself off automatically after
1 minute.
Instrument description
Display
M. 00
N. 0000
[e-mail] www.Testo-Direct.com

8
Overview of controls
1.
Current measurement
Select reading in
the first line
Select reading in
the second line
Save manually or automatically,
depending on setting (5.)
Print readings
2. Measurement functions
4.
Parameter settings
Selected The setting functions are activated in accordance with the reading testo testo
parameter selected - flashing cursor in display (See 1.): 645 445
°C System adjustment with EEPROM probe X
(4.1) Reset - system adjustment X
% Humidity probe (0636.9740 and 0636.9715)/ X X
(4.2) Checks and adjusts 3-function probe (0635.1540)
td Select calculated humidity parameters: td°C dew point X X
(4.3) g/m3 - absolute humiidty, g/kg - degree of humidity, J/g - enthalpy
m/s, mbar Differential pressure probes: initialisation, activation/deactivation X
m3/h m/s, m3/h in addition to mbar
(4.4) Velocity probes: activation/deactivation m3/h in addition to m/s X
Change cross-section input for an activated volume flow measurement X
ppm Switch between ppm and vol% with CO2X
(4.5) Initialisation of CO probe
HOLD
Freeze values
MAX
Display maximum values
MIN
Display minimum values
MEAN•
Multi-point mean calculation
Update values
Calculate mean
Reset mean
MEAN
Timed mean calculation
Start and end
Calculate mean
Reset mean
ESC
Location
Manual
saving
Print
readings
3.
Location
1 Buttons to
select
99 location
...
Connect probe
corresponding to
connection assignment
(rear of instrument)
[e-mail] www.Testo-Direct.com

9
Overview of controls
MAN
Activate
manual
saving
Activate - deactivate
automatic switch-off function
Select power supply
battery/rechargeable battery
Setting: Date
Setting: Time
Unit selection
Parameter setting for absolute
pressure and density compensation
AUTO
Program
automatic
saving
• Select meas.
cycles
• Set
measurement
rate
OUT
Read memory
contents on
display with
printing option
CLEAR
Clear memory
Note: Everything
in the memory is
deleted
5.
Memory
settings
6.
Instrument configuration
°C°F
m/sfpm [ft/min] (testo 445)
Factory reset
Print parameters
hPa mbar psi
in W [”H2O] (testo 445)
°C, %, Abs.mbar,
rho-g/m3,Pitot tube factor
1.
Current measurement
Simultaneously
m3/h m3/min m3/s
l/s cfm [ft3/min](testo 445)
Note:
Flashing display is activated and is
confirmed by pressing .
Connect probe
corresponding to
connection assignment
(rear of instrument)
[e-mail] www.Testo-Direct.com

10
Switching on / Selecting parameters / Saving / Printing
1. Current measurement
Connect measurement probes
Current readings - different,
depending on probe(s)
connected.
Battery / rech.
battery power
Segment test
It is possible to activate the following functions during mea-
suring at the touch of a button.
Save readings
Manual or automatic saving is determined by the
save setting (Chapter 5)
Print readings.
All of the readings, made available by the probes connected
to socket 1 and 2, on both lines of the reading display can
be called up with the exception of the value selected in the
other line.
Scroll with button in line 1:
Select socket.
Select parameter.
If this button in multi-function probes is pressed
repeatedly, it is possible to select the parameter (°C,
m/s...) to be displayed.
Scroll with button in line 2:
Select socket.
Select parameter.
If this button in multi-function probes is pressed
repeatedly, it is possible to select the parameter (°C,
m/s...) to be displayed.
There are different processing options available in
the menus described below corresponding to the
parameters selected.
Example of a reading:
I/0
VBAT
8.5
1
Location
Duct 1
Location
Line 1
Line 2
58.06
21.80
1:
1:
M.05
MAN
N.0017
m/s
hPa
Line 1
Line 2
58.06
1: m/s
Selected
socket
Parameter
Reading
Note on printing:
A distance 0f 0.5 m should not be exceeded in order to
guarantee problem-free data transfer. Objects between
instrument and printer prevent the data from being
transferred. Please observe notes in the instruction manual
on the printer.
[e-mail] www.Testo-Direct.com