TESTO 6321 User manual

testo 6321 · differential pressure transmitter
P2A software · Parameterizing, adjusting and analyzing
software
Instruction manual

2

1 Safety and the environment
3
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1Safety and the environment
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Avoiding electrical hazards
> Never use the instrument and connected probes to measure on
or near live parts!
> Damaged mains cables must only be replaced by authorized
personnel.
> Only have the transmitter wired and connected by authorized
personnel with the voltage disconnected.
> You must always comply with the regulations applicable in your
country for opening and repairing electrical equipment.
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Avoiding personal injury and damage to equipment
> Installation, setting and calibration work must only be carried
out by qualified and authorized personnel!
> Only open the instrument when this is expressly described in
the instruction manual for installation, maintenance or repair
purposes.
> Observe the permissible storage, transport and operating
temperature.
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> Do not store the product together with solvents. Do not use any
desiccants.
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> Do not use the instrument for control purposes at the same time
as operating or servicing the transmitter.
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> Only operate the product properly, for its intended purpose and
within the parameters specified in the technical data. Do not
use any force.
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> Carry out only the maintenance and repair work on this
instrument that is described in the documentation. Follow the
prescribed steps exactly. Use only original spare parts from
Testo.
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Any additional work must only be carried out by authorized
personnel. Otherwise testo will not accept any responsibility for the
proper functioning of the instrument after repair and for the validity
of certifications.

2 About this document
4
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Protecting the environment
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> At the end of its useful life, send the product to the separate
collection for electric and electronic devices (observe local
regulations) or return the product to Testo for disposal.
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2About this document
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Use
> Please read this documentation through carefully and
familiarize yourself with the product before putting it to use. Pay
particular attention to the safety instructions and warning advice
in order to prevent injuries and damage to the products.
> Keep this document to hand so that you can refer to it when
necessary.
> Hand this documentation on to any subsequent users of the
product.
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WARNING Indicates potential serious injuries
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CAUTION indicates potential minor injuries
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Symbols and writing standards
Representa-
tion
Explanation
Note: Basic or further information.
1. ...
2. ...
Action: more steps, the sequence must be
followed.
> ... Action: a step or an optional step.
- ... Result of an action.
Menu Elements of the program interface.
[OK] Buttons of the program interface.
... | ... Functions/paths within a menu.
“...” Example entries
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3 Contents
5
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3Contents
1Safety and the environment....................................................................3
2About this document...............................................................................4
3Contents ...................................................................................................5
4Transmitter...............................................................................................7
4.1. Specifications ..................................................................................7
4.1.1. Functions and use ...........................................................................................7
4.1.2. Scope of delivery .............................................................................................7
4.1.3. Dimensions......................................................................................................7
4.1.4. Technical data .................................................................................................7
4.2. Product description........................................................................11
4.2.1. At a glance.....................................................................................................11
4.2.2. Scaling .........................................................................................................12
4.3. Commissioning ..............................................................................13
4.3.1. Assembling the instrument.............................................................................13
4.3.1.1. Wall mounting ...................................................................................13
4.3.2. Wiring the instrument.....................................................................................14
4.3.2.1. 4-wire system....................................................................................16
4.3.2.2. 3-wire system....................................................................................16
4.4. Maintenance and cleaning.............................................................17
4.4.1. Cleaning housing ...........................................................................................17
4.4.2. Namur fault conditions ...................................................................................17
5Parameterizing, adjusting and analyzing software (P2A software)...18
5.1. Specifications ................................................................................18
5.1.1. Functions and use .........................................................................................18
5.1.2. System requirements.....................................................................................19
5.1.3. Scope of delivery ...........................................................................................19
5.2. First steps......................................................................................20
5.2.1. Installing the software/driver ..........................................................................20
5.2.1.1. Installing P2A software......................................................................20
5.2.1.2. Installing USB driver .........................................................................20
5.2.1.3. P2A software upgrade ......................................................................20
5.2.2. Starting the software......................................................................................20
5.2.2.1. Starting the program .........................................................................20
5.2.2.2. Establishing a connection with the instrument...................................21
5.2.2.3. Activating the connection with the instrument....................................21

3 Contents
6
5.3. Using the software ........................................................................ 22
5.3.1. User interface ................................................................................................ 22
5.3.2. Editing instrument/parameter file ................................................................... 24
5.3.2.1. Changing instrument/parameter file .................................................. 24
5.3.2.2. Creating a new instrument file........................................................... 27
5.3.2.3. Saving parameters............................................................................ 27
5.3.2.4. Opening the parameter file ............................................................... 27
5.3.2.5. Copying and pasting parameters ...................................................... 28
5.3.2.6. Deleting instrument/parameter file .................................................... 28
5.3.3. Analyzing/testing the transmitter.................................................................... 28
5.3.3.1. Analyzing/testing the instrument ....................................................... 29
5.3.3.2. Carrying out factory reset.................................................................. 29
5.3.3.3. Testing analog output ....................................................................... 29
5.3.3.4. Displaying min./max. values.............................................................. 31
5.3.4. Adjusting the transmitter ................................................................................ 32
5.3.4.1. n-point adjustment ............................................................................ 32
5.3.4.2. Adjusting the analog output .............................................................. 33
5.3.5. Transmitter history......................................................................................... 34
6Tips and assistance .............................................................................. 37
6.1. Questions and answers ................................................................ 37
6.2. Accessories and spare parts......................................................... 37
6.2.1. Ordering options for testo 6321 transmitter (0555 6321)................................ 38
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4 Transmitter
7
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4Transmitter
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4.1. Specifications
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4.1.1. Functions and use
The testo 6321 transmitter is suitable for the following applications,
amongst others:
• Air conditioning and ventilation technology
◦Monitoring ventilation and filtration systems
◦Monitoring fans
◦Monitoring exhaust air volumetric flow rates
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4.1.2. Scope of delivery
The scope of delivery of the testo 6321 transmitter includes the
following:
• Assembly accessories
• Operating instructions
• Calibration report
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4.1.3. Dimensions
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4.1.4. Technical data
Parameter
• Differential pressure

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Accuracy1
The specifications are only valid if the positive pressure is
applied at the positive pressure connection.
• 1.2 % of measuring range, additional ±0.3 Pa intrinsic error 2
• TK slope drift = 0.05 % of measuring range per degree Kelvin of
deviation from nominal temperature 22 °C
• TK zeroing drift= 0 % (by means of automatic zeroing)
Measuring range, resolution and overload
Measuring range
depending on
version ordered
Resolution Overload
0 to 100 Pa 0.1 Pa 20,000 Pa
0 to 10 hPa 0.01 hPa 200 hPa
0 to 20 hPa 0.01 hPa 200 hPa
0 to 50 hPa 0.01 hPa 750 hPa
0 to 100 hPa 0.1 hPa 750 hPa
0 to 500 hPa 0.1 hPa 2500 hPa
0 to 1000 hPa 1 hPa 2500 hPa
0 to 2000 hPa 1 hPa 2500 hPa
-100 to 100 Pa 0.1 Pa 20,000 Pa
-10 to 10 hPa 0.01 hPa 200 hPa
-20 to 20 hPa 0.01 hPa 200 hPa
1At 25 °C. A stabilization period of approx. 30 min must be taken into account
upon commissioning the instrument.
2Measuring uncertainty in accordance with GUM: ±1.2 % of measuring range
final value ±0.3 Pa.
GUM (Guide to the Expression of Uncertainty in Measurement): ISO guideline for determining the
measuring uncertainty in order to render global measurement results comparable.
The following uncertainties are used during the inquiry:
• Hysteresis
• Linearity
• Reproducibility
• Long-term stability
• Adjustment area/factory calibration
• Test location

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Measuring range
depending on
version ordered
Resolution Overload
-50 to 50 hPa 0.01 hPa 750 hPa
-100 to 100 hPa 0.1 hPa 750 hPa
-500 to 500 hPa 0.1 hPa 2500 hPa
-1000 to 1000 hPa 1 hPa 2500 hPa
-2000 to 2000 hPa 1 hPa 2500 hPa
Upon delivery and following a factory reset the readings are
shown in the display in the unit that was ordered via the
KMAT option Fxx, see Ordering options for testo 6321
transmitter (0555 6321) page 38.
Meas. cycle
• 1/sec
Zeroing cycle
• Set to 1 min at the factory
Interface
• Mini-DIN for P2A software (adjustment and parameterization
software)
Voltage supply
• 3 or 4-wire (separate signal and supply lines): 20 to 30 V
AC/DC, 300 mA power consumption
Maximum load
• 4-wire: 500 Ω(power output)

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Maximal load
• 10 kΩ(voltage output)
Analog output
• 0 to 1 V ± 2.5 mV (4-wire) or
• 0 to 5 V ± 12.5 mV (4-wire) or
• 0 to 10 V ± 25 mV (4-wire) or
• 4 to 20 mA ± 0.05 mA (4-wire)
• TK= 0.05 %K of measuring range per degree Kelvin of
deviation from nominal temperature 22 °C
Resolution of analog output
• 12 bit
Display
• 2-line LCD (optional)
Operating temperature
• -5 to 50 °C
Storage temperature
• -20 to 60 °C

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Application humidity
• 0 to 90 % RH
Housing, weight
• Plastic, approx. 160 g
Protection class
• IP 65 only if the transmitter is wired and/or sealing plugs are
inserted
Directives, standards and tests
• EC Directive: 2014/30/EC
Warranty
• Duration: 2 years
• Warranty conditions: see website www.testo.com/warranty
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4.2. Product description
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4.2.1. At a glance
1Display for showing reading
(optional, cannot be retrofitted)
2Service interface (mini-DIN port)
3Wall bracket (on rear)
4Negative pressure connection
5Positive pressure connection
6M 16 x 1.5 screw connection, e.g.
analog output
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4.2.2. Scaling
There are three types of min./max. values:
1The measuring range: The maximum sensor performance is in
this range. Measuring range, see table (below).
2Standard scaling: The output signals are assigned to this
measuring range as standard:
◦during delivery if no entries are made in the order code
◦after exchanging the unit, the measuring range recorded in
the instrument is applied as standard.
The transmitter even retains its scaling with the voltage
disconnected.
Measuring range, see table (below).
3The maximum settings for the manual scaling
◦The maximum limits can be calculated as follows:
X = difference between MIN. and MAX. value of the
standard scaling
(Max. value of standard) + (50 % of X)
(Min. value of standard) - (50 % of X)
◦It is thus possible to scale beyond the measuring range, e.g.
for the adjustment of the scaling limits to standard values of
a PLC.
With the alarm definition, however, the physical measuring
range limits are decisive.
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Measuring range/
standard scaling
Maximum scaling
0 to 100 Pa -50 to 150
0 to 10 hPa -5 to 15
0 to 20 hPa -10 to 30
0 to 50 hPa -25 to 75
0 to 100 hPa -50 to 150
0 to 500 hPa -250 to 750
0 to 1000 hPa -500 to 1500
0 to 2000 hPa -1000 to 3000
-100 to 100 Pa -200 to 200
-10 to 10 hPa -20 to 20

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Measuring range/
standard scaling
Maximum scaling
-20 to 20 hPa -30 to 30
-50 to 50 hPa -100 to 100
-100 to 100 hPa -200 to 200
-500 to 500 hPa -1000 to 1000
-1000 to 1000 hPa -2000 to 2000
-2000 to 2000 hPa -4000 to 4000
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4.3. Commissioning
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4.3.1. Assembling the instrument
4.3.1.1. Wall mounting
Attaching rear panel bracket
1. Remove locking screw (see item (4) of drawing below) and
detach rear panel bracket from plastic bracket (see item (2) of
drawing below).
2. Hold rear panel bracket in assembly position and mark the three
drill holes.
3. Drill three holes (Ø 5 mm) and insert dowels where necessary.
4. Screw on rear panel bracket.
Remember that the clamping brackets (1) must face the wall.

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Fastening instrument to rear panel bracket
1. Slide plastic bracket (2) on the back of instrument onto rear
panel bracket until it engages (see arrows).
2. Insert screw (4) through hole (3) and screw into rear panel
bracket.
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4.3.2. Wiring the instrument
WARNING
Electrical voltage!
> When routing cables, ensure that there is a space between the
signal line and the interfering external lines.
> If electromagnetic interference is likely, use a shielded and/or
twisted cable. Connect the shield to the earth on the side
facing away from the transmitter.
> If overvoltages are likely, install overvoltage protection devices.
WARNING
Electrical voltage
Danger of injury!
> De-energize the mains connection before connecting the
transmitter.

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CAUTION
Damage to electronic components!
> The terminal strip can be removed from the circuit board in
order to screw on the cable ends. After wiring, be sure to
completely attach the terminal strip on the contact pins as pre-
assembled.
Only have the transmitter wired and connected by
authorized personnel with the voltage disconnected.
1. Loosen and remove housing screws (1).
2. Remove upper part of housing (2) from lower part of housing (3)
and place on a clean surface.
3. Wire instrument (see 3-wire system page 16, 4-wire system
page 16).
4 Place upper part of housing (2) on lower part of housing (3) and
tighten with housing screws (1).
5. On instruments with display: Remove protective film (4) from
the display cutout of the housing cover.

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4.3.2.1. 4-wire system
Voltage output (4-wire, 0 to 1 V/0 to 5 V/0 to 10 V)/voltage output
(4-wire, 4 to 20 mA):
U = 20 to 30 V DC/AC
4.3.2.2. 3-wire system
All ground connections are connected to one another (= one
collective ground connection).
CAUTION
Destruction of the instrument in the event of incorrect
polarity!
> When connecting the voltage supply, place collective ground
connection on PIN 2!
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4.4. Maintenance and cleaning
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4.4.1. Cleaning housing
• Only clean the housing carefully with a moist cloth.
• Do not use aggressive cleaning agents.
• Do not use any solvents.
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4.4.2. Namur fault conditions
If the faults named in the following table occur, the analog outputs
output special values that enable a general fault warning in the
higher-level control system. The values correspond to the "Namur"
industry standard.
Status
message in
the display
Class Display
value in the
display
Analog output
4 to 20 mA 1 V 5 V 10 V
Watchdog
error
Error Previous
value stops
3.8 mA 1.1 V 5.5 V 11 V
Value below
min. scale
Underrange Reading 3.8 mA 0 V 0 V 0 V
Value above
max. scale
Overrange Reading 20.5 mA 1.1 V 5.5 V 11 V
Pressure too
high
Overrange ooooo · 20.5 mA 1.1 V 5.5 V 11 V
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5 Parameterizing, adjusting and analyzing software (P2A software)
18
5Parameterizing, adjusting and analyzing
software (P2A software)
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5.1. Specifications
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The P2A software is used for the parameterization, adjustment and
analysis of Testo transmitters. The following applies:
• If a Testo transmitter is bought at a later stage (and is therefore
more recent than the existing P2A software version), a software
update is required.
• You can find the free upgrade on the Testo website
www.testo.com under the product-specific downloads.
The software therefore only needs to be bought once, even for
owners of several Testo transmitters.
5.1.1. Functions and use
In the P2A software, two different file types are used: The
instrument and the parameter file.
Instrument file
The parameters of a particular transmitter are stored in its so-called
instrument file. Using this file, the parameters can be edited and the
instrument can be tested and adjusted.
Instrument files also contain the respective histories in addition to
the parameter data, i.e. "log books" are kept for the previous
parameterizations, adjustments and messages (see Transmitter
history page 34).
Instrument files are ".cfm" format files.
Parameter file
Parameter files are not tied to a specific individual transmitter and
contain only parameter data/no history data.

5 Parameterizing, adjusting and analyzing software (P2A software)
19
If you use various instruments of the same type, you can create
parameter files once (e.g. by saving the appropriate instrument file
as the parameter file) and transmit these onto the other
instruments.
Parameter files are ".cfp" format files.
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5.1.2. System requirements
Operating system
• Windows®XP Home/Professional
• Windows®Vista
• Windows®7
• Windows®8
• Windows®10
Computer
The computer must meet the requirements of the respective
operating system. In addition, the following requirements must be
met:
• Interface USB 1.1 or higher
• Graphics resolution min. 1024 x 768
Date and time settings are automatically transferred from
the PC. The administrator must ensure that the system time
is regularly synchronized with a reliable time source and, if
necessary, adjusted to ensure the authenticity of the data.
Software
The P2A software must be purchased and installed separately from
the transmitter. If it is a new software version, the transmitter is
already supported completely. Older P2A software versions can be
updated via the P2A software upgrade (cf. product CD included
with the transmitter).
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5.1.3. Scope of delivery
Included in the scope of delivery are:
• P2A software
• USB driver

5 Parameterizing, adjusting and analyzing software (P2A software)
20
When working with the parameterizing, adjusting and
analyzing software (P2A software), previous knowledge of
Windows®operating systems is assumed.
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5.2. First steps
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5.2.1. Installing the software/driver
Administrator rights are required.
5.2.1.1. Installing P2A software
1. Insert CD with P2A software.
✓ If the installation program does not start automatically:
> Open Windows Explorer and start the file Setup.exe on the
product CD.
2. Follow the directions of the installation wizard.
5.2.1.2. Installing USB driver
Before installing the USB driver, please read the separate
documentation that is enclosed with the USB driver CD.
5.2.1.3. P2A software upgrade
1. You can find the P2A software upgrade on the Testo website
www.testo.com under the product-specific downloads.
Download and save P2A software upgrade.
2. Start P2A upgrade.exe file.
3. Follow the instructions of the installation wizard.
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5.2.2. Starting the software
5.2.2.1. Starting the program
Windows program menu
Windows®XP or Windows®Vista
> Click on [Start] > All Programs > Testo > P2A Software
(double-click on left mouse button).
Windows®7
> Click on [Start] > All Programs > Testo > P2A Software
(double-click on left mouse button).