Testo 645 Operating Manual
testo 445 · testo 645
Instruction manual en
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/m3; 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
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.
2
Contents
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/CO2 measurement ...........................................................................................................29-30
Measuring absolute pressure ......................................................................................................31-32
Error messages ............................................................................................................................... 33
Technical data ............................................................................................................................ 34-35
Ordering data .............................................................................................................................36-41
Foreword
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
Initial operation
Please read prior to measurement
Do not measure on live parts.
Do not switch instrument on or off with the button
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
Observe storage and transport temperature and max. operating temperature (e.g. protect
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.
- during instrument configuration
- during automatic saving
the Instruction manual.
measuring instrument from direct sunlight)
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.
4
i
Instrument configuration
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.
5
Keypad:
On/Off
Prints
Confirms menu
setting/
executes function
Saves
Return to current
measurement/
location
Arrow buttons
move the cursor
Instrument description
Keypad/Connection assignment
Connection assignment:
RS232
2
12V
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)
– CO
probe
2
(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
1
Hold Max Min
Mean
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
6
M. 00
Instrument description
Display
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.
N. 0000
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
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.
.
button.
.
7
Overview of controls
Connect probe
corresponding to
connection assignment
(rear of instrument)
ESC
Location
3.
Location
1 Buttons to
...
select
99 location
1.
2. Measurement functions
Current measurement
Select reading in
the first line
Select reading in
the second line
Save manually or automatically,
depending on setting (5.)
Print readings
Multi-point mean calculation
HOLD
Freeze values
Display maximum values
MAX
Display minimum values
Timed mean calculation
MIN
MEAN•
Update values
Calculate mean
Reset mean
Start and end
Calculate mean
Reset mean
MEAN
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
(4.1)
% 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, m
(4.4) Velocity probes: activation/deactivation m
Change cross-section input for an activated volume flow measurement X
ppm Switch between ppm and vol% with CO
(4.5) Initialisation of CO probe
System adjustment with EEPROM probe X
Reset - system adjustment X
3
/h in addition to mbar
3
/h in addition to m/s X
2 X
8
Manual
saving
Print
readings
Connect probe
corresponding to
connection assignment
(rear of instrument)
1.
Current measurement
5.
Memory
settings
MAN
Activate
manual
saving
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
Overview of controls
Simultaneously
6.
Instrument configuration
Activate - deactivate
automatic switch-off function
Select power supply
battery/rechargeable battery
Setting: Date
Setting: Time
Parameter setting for absolute
pressure and density compensation
°C, %, Abs.mbar,
°C°F
m/sfpm [ft/min] (testo 445)
m3/h m3/min m3/s
l/s cfm [ft3/min](testo 445)
hPa mbar psi
Factory reset
Note:
Flashing display is activated and is
confirmed by pressing
rho-g/m3,
Print parameters
Unit selection
O] (testo 445)
in W [”H
2
Pitot tube factor
.
9
1. Current measurement
Switching on / Selecting parameters / Saving / Printing
Connect measurement probes
I/0
Segment test
Line 1
Line 2
Battery / rech.
VBAT
battery power
8.5
Location
Location
1
Duct 1
M.05
N.0017
MAN
1:
m/s
58.06
1:
hPa
21.80
Current readings - different,
depending on probe(s)
connected.
Line 1
Line 2
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:
Selected
socket
1:
m/s
58.06
It is possible to activate the following functions during measuring at the touch of a button.
Save readings
Manual or automatic saving is determined by the
save setting (Chapter 5)
Print readings.
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.
10
Parameter
Reading
2. Meaurement functions
Hold/Max/Min
ESC
Location
Hold
Max/Min
Mean
Hold
Max/Min
Mean
Hold
Max/Min
Mean
M.05
N.0017
MAN
1:
58.06
1:
21.80
M.05
N.0017
MAN
1HLD
58.06
1HLD
21.60
M.05
N.0017
MAN
1MAX
73.37
1MAX
34.80
M.05
N.0017
MAN
1MIN
56.62
1MIN
Current measurement
m/s
hPa
Freezing values
m/s
hPa
Maximum readings since the
measurement began
m/s
hPa
Minimum readings since the
measurement began
m/s
hPa
Save reading
Print reading
Save maximum
measured value
Print maximum
measured value
Save measured
value
Print measured value
Hold
Max/Min
Mean
20.00
See multi-point/timed
mean calculation
11
2. Measurement functions
Multi-point mean calculation Mean•
Only for parameter in the 1st line
ESC
Location
New mean
calculation possible
M.05
N.0017
MAN
1:
58.06
1:
21.80
Hold
Hold
Max/Min
Hold
Max/Min
Mean
Max/Min
Mean
Max/Min
Mean
M.05
N.0017
MAN
1:
25.21
OK MEAN
Current measurement
m/s
hPa
Hold
Mean
Multi-point mean calculation
The mean is only calculated for the para-
m/s
meter selected in the first line.
Exception:
Selection of volume flow (see note on
page 13)
0
•
Select parameter required.
Update values.
M.05
N.0017
MAN
MEAN
m/s
25.21
MEAN NEW
Calculate mean
Mean
Number of updated
5
•
values
Save mean
Print mean
12
2. Measurement functions
Current measurement
M.05
N.0017
MAN
Hold
1:
58.06
1:
m/s
hPa
Max/Min
Hold
Mean
Max/Min
Hold
Mean
Max/Min
Hold
Mean
Max/Min
Hold
Mean
Max/Min
Mean
21.80
Note on saved or printed logs:
1. The log of a multi-point mean
calculation contains single value,
max. value, min. value and
mean value.
2. The log of a timed mean
calculation contains max.
value, min. value and mean
value.
Special solution for volume
flow selected:
3. Any additional velocity values
(m/s) are saved with the volume
flow values in the memory.
M.05
N.0017
MAN
1:
55.21
START
00:00
M.05
N.0017
MAN
1:
55.17
MEAN
END
00:10
M.05
N.0017
MAN
1:
55.20
MEAN
GO
m/s
m/s
m/s
Timed mean calculation Mean
Only for parameter in the 1st line
Select required reading.
Start timed mean calculation
Finish timed mean calculation.
Continue timed mean calculation
or
calculate mean.
New mean
calculation possible
ESC
or
Location
00:15
M.05
N.0017
MAN
MEAN
m/s
55.21
MEAN NEW
00:05
13
Mean
Timed duration of
mean calculation
Save mean.
Print mean.
3. Location selection
M.05
N.0017
MAN
1:
58.06
1:
21.80
Location
m/s
hPa
ESC
Location
Duct 1
The location names Location 1 to 99 are specified by the factory.
Additional location names (8 characters) can only be loaded onto
1. Current
measurement
your instrument using PC software.
01
The cross-section
can only be called up if
volume flow is activated
(testo 445 instrument)
/ Select location
A
cm
50.0
Increase value
Decrease value
Select digit box
ESC
Location
Use ESC to go
to selection of
cross-section entry
Ø AxB, m2, Funnel)
Return to current
measurement
B
cm
50.0
or :
From now on all measured data which is saved or printed is
linked to the selected location or product names.
14
Increase value
Decrease value
Select digit box
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