Testo 6381 Operating Manual

testo 6381 · di f f erential pressu re t ransmitter
P2A sof t ware · Parameteriz ing , adj usting and analyz ing

software

Instruction manual

2

1 Safety and the environment

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1 Safety 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

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country for opening and repairing electrical equipment.

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

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temperature.

> Do not store the product together with solvents. Do not use any

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desiccants.

> Do not use the instrument for control purposes at the same time

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as operating or servicing the transmitter.

> Only operate the product properly, for its intended purpose and

within the parameters specified in the technical data. Do not

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use any force.

> 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

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Testo.

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.

3

2 About this document

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Protecting the environment

> At the end of its useful life, send the product to the separate

collection for electric and electronic devices (observe local

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2 About this doc ument

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regulations) or return the product to Testo for disposal.

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

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product.

WARNING

Indicates potential serious injuries

CAUTION indicates potential minor injuries

Symbols and writing standards
Representa-

Explanation

tion

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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4

3 Contents

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3 Contents

1 Safety and the environment....................................................................3

2 About this document ...............................................................................4

3 Contents....................................................................................................5

4 Transmitter................................................................................................8

4.1. Specifications...................................................................................8

4.1.1. Functions and use...........................................................................................8

4.1.2. Scope of delivery............................................................................................8

4.1.3. Accessories....................................................................................................9

4.1.4. Technical data................................................................................................9

4.1.5. Dimensions................................................................................................... 13

4.2. Product description ........................................................................13

4.2.1. At a glance....................................................................................................13

4.2.2. Display and keypad.......................................................................................15

4.2.3. Service interface........................................................................................... 15

4.2.4. Relay board (option) ..................................................................................... 15

4.2.5. Analog outputs..............................................................................................15

4.2.6. Parameters................................................................................................... 16

4.2.7. Scaling 16

4.2.8. Alarm handling..............................................................................................17

4.3. Commissioning...............................................................................18

4.3.1. Inserting Ethernet module (order no. 0554 6656).......................................... 18

4.3.2. Assembling the instrument............................................................................ 20

4.3.2.1. Wall mounting .................................................................................. 20

4.3.3. Connecting the instrument............................................................................ 21

4.3.3.1. Overview of terminals.......................................................................23

4.3.3.2. Connecting voltage supply and analog outputs.................................24

4.3.3.3. Connecting the relay outputs............................................................25

4.3.3.4. Plug-in connection option................................................................. 28

4.3.3.5. Creating the PE/earthing terminal..................................................... 29

4.3.3.6. Setting the Ethernet module.............................................................30

4.3.3.7. Closing the instrument......................................................................32

4.3.4. Ethernet communication ............................................................................... 33

4.3.4.1. Types of operation ........................................................................... 33

4.3.4.2. Mains connection.............................................................................33

4.3.4.3. LED status displays..........................................................................34

4.3.4.4. testo 6381 as Saveris subscriber...................................................... 34

4.3.4.5. Integration into customer's Ethernet system..................................... 35

4.3.5. Adjusting the instrument................................................................................45

4.3.5.1. Analog output adjustment.................................................................45

4.3.5.2. n-point adjustment............................................................................ 46

4.4. Operation .......................................................................................47

5

3 Contents

4.4.1. Relationship between user menu and mini-DIN socket is active .................... 47

4.4.2. Key cover......................................................................................................47

4.4.3. Password protection ..................................................................................... 48

4.4.4. Structure of user menu..................................................................................49

4.4.5. Overview of the testo 6381 user menu..........................................................50

4.4.6. The individual main menus............................................................................53

4.4.6.1. Editing main menu of channel 1....................................................... 53

4.4.6.2. Editing Main Menu Alarm ................................................................. 53

4.4.6.3. Editing Main Menu Settings..............................................................55

4.4.6.4. Editing Main Menu Analysis ............................................................. 58

4.4.6.5. Editing Message main menu............................................................60

4.4.6.6. Calling up Main Menu Ident..............................................................61

4.4.6.7. Editing Main Menu Adjust.................................................................61

4.4.6.8. Editing Reset main menu ................................................................. 63

4.5. Status, warning and error messages............................................. 63

4.5.1. Status messages..........................................................................................64

4.5.2. Warning messages....................................................................................... 65

4.5.3. Transmitter error messages.......................................................................... 66

4.5.4. Handling alarm messages.............................................................................66

4.5.5. Namur fault conditions.................................................................................. 67

4.6. Maintenance and cleaning............................................................. 68

4.6.1. Maintaining the instrument............................................................................ 68

4.6.2. Cleaning the instrument................................................................................ 68

5 Parameterizing, adjusting and analyzing software (P2A software).. 69

5.1. Specifications ................................................................................ 69

5.1.1. Functions and use.........................................................................................69

5.1.2. System requirements....................................................................................70

5.1.3. Scope of delivery..........................................................................................70

5.2. First steps...................................................................................... 71

5.2.1. Installing the software/driver..........................................................................71

5.2.1.1. Installing P2A software..................................................................... 71

5.2.1.2. Installing USB driver......................................................................... 71

5.2.1.3. P2A software upgrade......................................................................71

5.2.2. Starting the software..................................................................................... 71

5.2.2.1. Starting the program ........................................................................ 71

5.2.2.2. Establishing a connection with the instrument..................................71

5.2.2.3. Activating the connection with the instrument................................... 72

5.3. Using the software......................................................................... 72

5.3.1. User interface...............................................................................................72

5.3.2. Editing instrument/parameter file...................................................................75

5.3.2.1. Changing instrument/parameter file..................................................75

5.3.2.2. Saving parameters........................................................................... 84

5.3.2.3. Opening the parameter file...............................................................85

5.3.2.4. Copying and pasting parameters......................................................85

5.3.2.5. Deleting instrument/parameter file....................................................86

5.3.2.6. Creating a new instrument file.......................................................... 86

6

3 Contents

5.3.3. Analyzing/testing the transmitter ................................................................... 86

5.3.3.1. Analyzing/testing the instrument.......................................................86

5.3.3.2. Carrying out factory reset.................................................................87

5.3.3.3. Testing analog output.......................................................................87

5.3.3.4. Testing switch output relays 1 to 4................................................... 89

5.3.3.5. Displaying min./max. values............................................................. 90

5.3.4. Adjusting the transmitter ............................................................................... 91

5.3.4.1. n-point adjustment............................................................................ 91

5.3.4.2. Adjusting the analog output..............................................................92

5.3.5. Transmitter history........................................................................................ 93

6 Tips and assistance...............................................................................97

6.1. Questions and answers..................................................................97

6.2. Accessories and spare parts..........................................................97

6.2.1. Ordering options for 6381 transmitter (0555 6381)........................................ 98

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7

4 Transmitter

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4 Transmitter

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4.1. Specifications

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4.1.1. Functions and use

The testo 6381 transmitter is suitable for the following applications
with Ethernet networking, amongst others:

• Test benches

• Clean rooms

• Filling processes

• Painting systems

• Drying processes

• Monitoring flow velocities or volumetric flow rates in air
conditioning systems

In addition to the signal transmission of the readings to a control
unit via analog outputs, the measurement data can simultaneously
be recorded, documented and visualized via Ethernet.
Furthermore, it is possible to issue an alarm for those responsible

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for the process, if necessary.

4.1.2. Scope of delivery

The scope of delivery of the testo 6381 transmitter includes the
following:

• Key cover

• Rear panel bracket

• Ethernet module

• Instruction manual

• Calibration report

• CD-ROM with operating instructions (PDF), configuration files
for Ethernet module and P2A update (this can only be used in
conjunction with the P2A software, which has to be ordered

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8

separately).

4.1.3. Accessories

The following accessories are available for the testo 6381
transmitter, amongst others:

• Mains unit

• P2A software (parameterizing, adjusting and analyzing
software)

• Assembly accessories

Information about accessories and their order numbers can
be found in Accessories and spare parts or on the

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website at www.testo.com.

4.1.4. Technical data

Parameters

• Differential pressure

4 Transmitter

Differential pressure accuracy

The specifications are only valid if the positive pressure is
applied at the positive pressure connection.

• 0.5 % of measuring range, additional 0.3 Pa intrinsic error 1

• T

K slope drift

= 0.03 % of measuring range per degree Kelvin of

deviation from nominal temperature 22 °C

• T

K zeroing drift

1

Measuring uncertainty in accordance with GUM: ±0.8 % of measuring range

= 0 %, as zeroing with solenoid valve2

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

• Adjustment area/factory calibration

2

Minor mixtures of the media may occur at the positive and negative pressure

• Test location

side due to the automatic zeroing cycle.

9

4 Transmitter

Pressure measuring range, resolution and overload of
differential pressure

Pressure
measuring range
depending on
version ordered

0 to 50 Pa 0.1 Pa 20,000 Pa
0 to 50 Pa 0.1 Pa 20,000 Pa
0 to 100 Pa 0.1 Pa 20,000 Pa
0 to 500 Pa 0.1 Pa 20,000 Pa
0 to 10 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

-10 to 10 Pa 0.1 Pa 20,000 Pa

-50 to 50 Pa 0.1 Pa 20,000 Pa

-100 to 100 Pa 0.1 Pa 20,000 Pa

-500 to 500 Pa 0.1 Pa 20,000 Pa

-10 to 10 hPa 0.01 hPa 200 hPa

-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

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 6381 transmitter
(0555 6381), page 98.

Resolution Overload

10

Meas. cycle

• 1/sec

Interface

• Mini-DIN for P2A software (parameterizing and adjusting

software) and handheld testo 400/650

4 Transmitter

Voltage supply

• 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)

Maximal load

• 4-wire: 10 kΩ (voltage output)

Analog output

• 0 to 1 V ± 1.5 mV (4-wire) or

• 0 to 5 V ± 7.5 mV (4-wire) or

• 0 to 10 V ± 15 mV (4-wire) or

• 0 to 20 mA ± 0.03 mA (4-wire) or

• 4 to 20 mA ± 0.03 mA (4-wire)

Resolution of analog output

• 12 bit

Relay

• 4 relays, 250 V AC/DC, 3 A (optional)

11

4 Transmitter

Display

• 2-line LCD with plain text line (optional)

Operating temperature

• -5 to 50 °C/23 to 122 °F

Storage temperature

• -20 to 60 °C/-4 to +140 °F

Process temperature

• -20 to 65 °C/-4 to 149 °F

Housing, weight

• Metal: 1.960 kg

• Ethernet module: 0.610 kg

Protection class

• IP 65 only if the transmitter is wired properly (closed cable

entries), Ethernet connector and Harting PushPull connector
are inserted and/or sealing plugs are inserted.

12

Directives, standards and tests

• EC Directive: 2004/108/EC

• DIN 14644-4

• EN 61000-6-2 interference immunity

• EN 61000-6-3 interference emission

• EN 61326-1+A1+A2

Ethernet module

• Interface:

◦ 1 x mini-DIN
◦ 1 x RJ45 (Ethernet 10 BaseT/100 BaseTX)

• LED:

2 x green

Warranty

• Duration: 2 years

• Warranty conditions: see website www.testo.com/warranty

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4.1.5. Dimensions

4 Transmitter

Dimensions in mm a b

with M20 cable couplings 144 147
With NPT cable coupling 144 144
With M plug-in connection 143

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4.2. Product description

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4.2.1. At a glance

1 Keys (only with optional display)
2 Service flap screw connection

(self-locking, 2 pcs.)
3 Display (optional)
4 Service flap
5 Negative pressure connection
6 Positive pressure connection,

marked with a red washer
7 Lower part of housing
8 M 16 x 1.5 screw connection*,

e.g. analog outputs
9 M 16 x 1.5 screw connection*,

e.g. voltage supply
10 Earthing/PE connection

13

4 Transmitter

11 M 20 x 1.5 screw connection*,

e.g. R3 and R4 relays

12 M 20 x 1.5 screw connection*,

e.g. R1 and R2 relays
13 Adjusted probe plug
14 Upper part of housing
* Alternatively, NPT cable

couplings or M plug-in

connections are available
A Ethernet module
1 DIP switch
2 Ethernet port
3 LED: LAN connection status
4 LED: Supply

5 Housing screws
6 Hole for fastening to rear panel

bracket (M3 x 6 screw)
7 Plastic bracket for assembly on

rear panel

14

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4.2.2. Display and keypad

The display option allows operation of the testo 6381 transmitter via
the display and four keys.

The LCD display consists of two 7-segment lines for displaying
readings and units and of an information line (for status messages,
for example).

The brightness and contrast of the display and the background
lighting (permanent or off) can be changed via the user menu or the

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4.2.3. Service interface

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P2A software.

The parameterizing socket (mini-DIN) is located behind the service

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flap as an interface to the P2A software.

4.2.4. Relay board (option)

This has a floating switch capacity of 250 V AC/3 A. The switching
limits and hysteresis as well as the function as relay for the
collective alarm can be set via the display or the P2A software.

Further features include:

• Function of changeover contacts (NC/NO contacts) freely
selectable

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• 12 terminals for a total of 4 relays.

If no relays are available, settings for monitoring limit values
or alarms can still be controlled via the display. The alarm
status will be shown on the display.

Only have the transmitter wired and connected by
authorized personnel with the voltage disconnected.

4 Transmitter

4.2.5. Analog outputs

As analog outputs, the testo 6381 has either

• 1 current output of 0 to 20 mA (4-wire)/4 to 20 mA (4-wire) or

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15

• 1 voltage output of 0 to 1 V/0 to 5 V/0 to 10 V (4-wire)

4 Transmitter

4.2.6. Parameters

The following parameters are displayed:

• Differential pressure in Pa, hPa, kPa, mbar, bar, mmH

O, inch HG, kg/cm2, PSI

H

2

3

in m/s, ft/min

•
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• Flow

• Volumetric flow rate

4.2.7. Scaling

There are three types of min./max. values:
1 The measuring range: The maximum sensor performance is in

this range. Values outside of the measuring range are displayed
via messages, for example. Measuring range, see table
(below).

2 Standard 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).
3 The 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.

4

in m3/h, l/min, Nm3/h, Nl/min

O, inch

2

3

To prevent fluctuating flow rate values at the zero point (depressurized), the
flow rate values are only calculated as of differential pressures > 0.2 Pa or
> 0.1 % of the respective measuring range (whichever is the greater). With
smaller differential pressures, the flow rate value remains at 0.00 m/s.

4

Calculated
16

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Measuring
range/standard
scaling

0 to 50 Pa -5 to 15 Pa
0 to 50 Pa -25 to 75 Pa
0 to 100 Pa -50 to 150 Pa
0 to 500 Pa -250 to 750 Pa
0 to 10 hPa -5 to 15 hPa
0 to 50 hPa -25 to 75 hPa
0 to 100 hPa -50 to 150 hPa
0 to 500 hPa -250 to 750 hPa
0 to 1000 hPa 500 to 1500 hPa

-10 to 10 Pa -20 to 20 Pa

-50 to 50 Pa -100 to 100 Pa

-100 to 100 Pa -200 to 200 Pa

-500 to 500 Pa -1000 to 1000 Pa

-10 to 10 hPa -20 to 20 hPa

-50 to 50 hPa -100 to 100 hPa

-100 to 100 hPa -200 to 200 hPa

-500 to 500 hPa -1000 to 1000 hPa

-1000 to 1000 hPa -2000 to 2000 hPa

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4 Transmitter

With the alarm definition, however, the physical measuring
range limits are decisive.

Maximum scaling

4.2.8. Alarm handling

For upper and lower alarm limits, individual alarms as well as
collective alarms can be specified. If the collective alarm function is
activated, an alarm is triggered as soon as the alarm limit of an
alarm is exceeded, if this alarm is assigned to the collective alarm.

The testo 6381 monitors limit values with the help of relays. If a
reading is outside the limit values, a relay to be specified by the
user is switched.

If the reading reverts to more than a specified hysteresis below or
above the limit value, the alarm is cancelled.

17

4 Transmitter

In addition, information about the occurrence of error/status
messages can be provided by means of a collective alarm relay,
see Status, warning and error messages, page 63

If multiple alarm messages are activated at the same time,
the last alarm is shown. If the alarm is cancelled again, the

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4.3. Commissioning

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previous messages are no longer shown.

4.3.1. Inserting Ethernet module (order no. 0554 6656)

The Ethernet module can be ordered retroactively as an accessory.
It can easily be installed in the testo 6381 transmitter.

18

1. Loosen screw connection (1) of service flap and open the flap.

2. Loosen and remove housing screws (2).

3. Remove upper part of housing (3) and place on a clean surface.

4 Transmitter

4. Place Ethernet module (A) on lower part of instrument (4).

First set the desire operating mode via the DIP switch (see
Setting the Ethernet module, page 30) before fixing the
instrument in place.

5. Set on upper part of instrument (5) and fix in place using the
housing screws (6) provided in the accessories.

19

4 Transmitter

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4.3.2. Assembling the instrument

4.3.2.1. 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.

Fastening instrument to rear panel bracket

20

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

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bracket.

4.3.3. Connecting the instrument

4 Transmitter

Opening the instrument

1. Loosen screw connection (1) of service flap and open the flap.

21

4 Transmitter

22

2. Loosen and remove housing screws (2).

The Ethernet module (A) is already detached from the
upper and lower parts of the housing by removing the
housing screws (2).

3. Remove upper part of housing (3) and place on a clean surface.

4. Remove Ethernet module (A) from lower part of housing (4) and

also place on a clean surface.

WARNING

El ec t r i c a l vo l t a ge
Danger of injury!

> De-energize the mains connection before connecting the

transmitter.

Only have the transmitter wired and connected by

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4.3.3.1. Overview of terminals

authorized personnel with the voltage disconnected.

4 Transmitter

1 Lower part of housing 6 Terminal board
2 Relay board (option) 7 M 16 x 1.5 screw connection*
3 Relay terminals 8 Eyelet for measuring point

panel

4 Insulating trough for relay

9 M 20 x 1.5 screw connection*

board

5 Terminal strip for voltage

supply and analog outputs

* Alternatively, NPT cable

coupling or M plug-in
connection

23

4 Transmitter

The following description of the terminals refer to this

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4.3.3.2. Connecting voltage supply and analog outputs

overview and its numbering.

Terminal strip for voltage
supply and analog outputs,
item (5) of overview of
terminals

Channels 2 and 3 shown on the circuit board cannot be
used with this instrument.

1. Feed cable with voltage supply and analog signal lines through

opened M 16 x 1.5 screw connection (item (8) in the overview of
terminals).

2. Strip the cable ends, clamp wire end ferrules on and screw

down onto voltage terminals.

3. Close M 16 x 1.5 screw connection (item (8) in the overview of

terminals).

Wiring diagram for 4-wire system (0 to 20 mA/4 to 20 mA/0 to
1 V/0 to 5 V/0 to 10 V)

1-channel
0 to 20 mA/4 to 20 mA

max. load per 500 Ω 0
to 1 V/0 to 5

V/0 to 10 V

Channels 2 and 3 shown on the circuit board cannot be
used with this instrument.

24

Requirement for the connecting cable of the supply:

• Insulated with cross-section of at least 0.25 mm².

• The supply line must be secured against exceeding 8 A.

• An OFF switch must be installed in an easily accessible
position close by and be marked as such.

1. Feed connection cable of the channel through opened

M 16 x 1.5 screw connection (item (8) in the overview of
terminals).

2. Strip the cable ends, clamp wire end ferrules on and screw to
channel terminals as shown in diagram.

3. Close M 16 x 1.5 screw connection (item (8) in the overview of

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4.3.3.3. Connecting the relay outputs

terminals).

Only have the transmitter wired and connected by
authorized personnel with the voltage disconnected.

There is the option of twelve terminals for a total of four relays. The
designations NC/C/NO (normally closed contact/root or
pin/normally open contact) are etched on the surface of the board.

4 Transmitter

Relay terminal strip,
item (3) of overview of
terminals

Using PG screw connection

1. Feed connection cables for the relays through opened
M 20 x 1.5 screw connection (item (10) of overview of
terminals).

2. Strip cable ends and clamp on wire end ferrules.

3. Connect relays according to chosen function (NC/NO) (see
diagrams below; relay 1 is shown as an example of a
connection).

Using plug-in connections (optional)

Only insert or disconnect the plug-in connection when the
voltage is disconnected.

4. Clean the connector of the probe line and the coupling of any
foreign matter.

25

4 Transmitter

Do not disconnect the connector of the probe line from the
instrument for extended periods to protect against
contamination.

Connection note

• For the connection, a double-insulated mains cable
(sheathed cable) with a cross-section of at least

1.5 mm² must be used.

• Cable connection (2) may not be routed in a loop within
the tray (1).

• It is recommended that you always tie 3 cores to one
another using a cable tie (3).

• The insulation of the cable must be fed at least 5 mm
(4) into the tray.

26

Use of relay as NC contact (NC = normally closed)

1 Alarm/status light

(example of installation)

2 250 V AC/DC, 3 A

4 Transmitter

The busy light (alarm/status light) is permanently on until
the relay opens or the circuit is interrupted. This circuit can
therefore be used to monitor the functionality of the alarm
circuit, as a cable break, for instance, is indicated by the
busy light going off.

Use of relay as NO contact (NO = normally open)

1 Alarm/status light

(example of installation)

2 250 V AC/DC, 3 A

27

4 Transmitter

The busy light (alarm/status light) only comes on when the
relay is switched (closed). Monitoring the functionality of the
alarm circuit is therefore not possible with this switching
operation.

5. Close M 20 x 1.5 screw connection (item (9) in overview of

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terminals).

4.3.3.4. Plug-in connection option

As an option, the PG screw connections of the signal and supply
lines can be replaced with plug-in connections that are installed at
the housing, see item 1 and 2. The relay cabling occurs via
standard cable entries and PG screw connections, see item 3 and

4.

28

Plug-in connections for power supply and channels

M12 plug-in connection (5-pin) socket (item 1)
View of the plug-in connections in the installed state from outside

PIN Assignment

1 V 24­2 V 24+
3 + Ch1
4 - Ch1
5 PE

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4.3.3.5. Creating the PE/earthing terminal

As the testo 6381 has a metal housing, we recommend that the
instrument be earthed. This can be done using the earthing
terminal within the instrument (1) or the earthing terminal outside of
the instrument (2).

Only use the external earthing terminal in dry interiors.

4 Transmitter

Using the earthing terminal within the instrument

1. Guide shielded cable (5) through the cable coupling (x) and fit
cable lug (8). Fix this to the side of the instrument (6) using M 5
screw (3), washer (4) and snap ring (7) on the internal earthing
terminal (1).

2. Place the other cable end on an appropriate functional earth,
e.g. an earthing bar.

Using an earthing terminal outside of the instrument

1. Use PE line (yellow-green) (5) with cable lug (8). Fix this using
M 5 screw (3), washer (4) and snap ring (7) on the external
earthing terminal (2).

2. Place the other cable end on an appropriate functional earth,
e.g. an earthing bar.

29

4 Transmitter

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4.3.3.6. Setting the Ethernet module

Using a DIP switch the Ethernet module can be switched between
two main functions:

• Saveris subscriber function (DIP switch no. 1 = on, DIP switch
no. 2 = on), testo 6381 is used as a testo Saveris component.

• XML server function (DIP switch no. 1 = off, DIP switch no. 2 =
on), integration of the testo 6381 into the customer's Ethernet
system.

In the condition on delivery, the switch position is set to on
(Saveris mode) with the testo 6381 with Ethernet module.

✓ The testo 6381 must be separated from the Ethernet network.

1. Open transmitter (see Opening the instrument, page 21).

2. Set DIP switch no. 1 (1) at Ethernet module. In the picture: DIP
switch no. 1 off, DIP switch no. 2 on

3. Set Ethernet module on lower part of housing (see arrow).

5

DIP switch no. 2 non-functional

30

5

4 Transmitter

4. For the configuration of the Ethernet module, see following
chapter.

5. If you do not wish to perform a configuration, close the
transmitter.

31

4 Transmitter

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4.3.3.7. Closing the instrument

32

1. Place Ethernet module (A) on lower part of instrument (1).
2 Set on upper part of instrument (2) and fix in place using

housing screws (3).

4 Transmitter

3. Close the service flap and tighten screws (4).

4 Connect Ethernet network cable to the transmitter via the

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Ethernet jack.

4.3.4. Ethernet communication

4.3.4.1. Types of operation

In general, the Ethernet module performs two functions:

• a corresponding testo 6381 becomes a Saveris subscriber

• a corresponding testo 6381 can be integrated into any Ethernet
systems

4.3.4.2. Mains connection

33

> Connect the network cable to the transmitter.

The network cable must not be connected directly to the
telephone network (ISDN).

In order to ensure the IP protection class, an RJ 2.5 Harting
PushPull connector must be used.

4 Transmitter

4.3.4.3. LED status displays

Characteristic LED 1 LED 2

Colour green green
Status display for Voltage supply LAN connection
Status: off No voltage supply No LAN connection
Status: lights up Voltage supply present LAN connection

Status: flashes Data transfer

4.3.4.4. testo 6381 as Saveris subscriber

Setting the IP address

✓ Upper part of housing must be removed.

✓ Network cable must be connected to the Saveris base and to

the Ethernet module.

✓ Service plug must be inserted.

The IP address of the transmitter can either be set via the P2A
software (transmitter accessories) or via the configuration menu of
testo Saveris

TM

(testo SaverisTM Ethernet Wizard).

present

34

1. Set the IP address with the P2A software (see Using the
software, page 72) or with the testo Saveris

TM

Ethernet Wizard

(see instruction manual).

2. Disconnect service plug.

3. Disconnect the Ethernet module from the voltage supply.

4. Close instrument (see Closing the instrument, page 32).

Using Saveris

> Start Saveris software (see instruction manual Measurement

data monitoring with testo Saveris)

Ensure that the Saveris software is not already open, for
example in multi-user operation under Windows

®

Vista. If
multiple clients are installed in a network, make sure that no
simultaneous changes are made to the system
configuration by the clients during simultaneous operation
of the clients.

4 Transmitter

1. [Start] | All Programs | Testo |

• Select Saveris Professional Client (full version). The entry is

available if Saveris Professional Client is installed

• Select Saveris Viewer (limited functionality). The entry is

available if Saveris Viewer is installed

- The Testo Saveris software program window is opened with
the Select project dialogue.

If the software will not start, check whether the testo

tdassvcs service is started in the service management of

the operating system and restart it, if needed.

2. Select the

• Only active projects option if the data from a running

project should be opened

• All projects option if the data from a completed project

should be opened.

3. Select the project that is to be opened in the tree structure.

4. Confirm with [OK].

- The Testo Saveris software program window is shown with

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the selected data record in the foreground.

4.3.4.5. Integration into customer's Ethernet system

Precondition

The user should be familiar with the structure of an XML
document. Furthermore, enough knowledge should be
available that this type of document can be downloaded
and decoded via an Internet connection with the aid of a
programming/script language.

35

4 Transmitter

Interface

The communication takes place according to the client/server
principle, whereby the Ethernet module takes on the role of the
server:

The XML interface will be approached via a URL. The URL consists
of the IP address of the Ethernet module, the path for the XML
document and, depending on the URL, with a clearly defined
parameter. If a parameter is missing or an incorrect value is
transferred, the Ethernet module sends back a simple error
message.

Example:
IP address = 254.169.100.100
URL for serialnumber.xml:
http://254.169.100.100/data/getserialnumber
If a parameter is required, a "?" is always in the first place after the

URL, then the parameter is transferred to the common query string
form (name=value).

Example:
IP address = 254.169.100.100
URL for / identification.xml:
http://254.169.100.100/config/getidentification?param=0 (compare

table xml codes)
After calling up the compound URL, if everything was correct, an

XML document is returned. With faulty parameters a simple
HTML answer comes that points out the reason that an XML
answer could not be given.

If an XML document is to be loaded on the server, access is
provided by means of a POST request

Example of an upload via the program wget:
IP address = 254.169.100.100
URL for / usersettings.xml:

Path details of the folder in which
the wget program is located

H:/wget/wget-complete-stable /wget --post-file= C:/usersettings.xml 254.169.100.100/config/

Comm and P ath de ta ils o f the

folder in which the
usersettings XML file is
located

IP address of the transmitter
and required URL (see table on
the nex t page)

setusersettings

The Ethernet module supports reading out of

• Readings

36

4 Transmitter

• Instrument type (testo 6381)

• Firmware date and version (testo 6381)

• Status and status messages (testo 6381)

• Alarm messages (testo 6381)

• Service hour counter (testo 6381)

as well as the reading and writing of the:

• Adjustment data (testo 6381)

• Configuration data of analog outputs (testo 6381)

• Configuration data of relays (testo 6381)

• User settings (testo 6381)

XML codes (download)

The table of XML codes is available for download at
www.testo.de/transmitter as well as on the product CD

URL Description Parameter Answer (see

Appendix)

/data/getserialnumber Read off serial number of

/data/getidentification Read off type of

/data/getversion Read off firmware ve r sio n

/data/getfirmwaredate Re a d off firmware date of

/data/getonlinevalue Read off onl i n e values of

/data/getviewchannels Read off vie w channel s of

/data/getstatus Read off stat us of

/data/getlaststatusmessa
ge

/c onfig/gethourscount Re ad off se rvice hour

/config/getusersettings Read off settings of

/config /getc a libration Re a d off a dj u stment data

connecte d trans m i tte r

connecte d trans m i tte r

of co nnected trans m itter

connecte d trans m i tte r

connecte d trans m i tte r

connecte d trans m i tte r

connecte d trans m i tte r
Read off last status

me ss ages of co nnected
transmitter

counter o f transm i tte r

transmitter

of transmitter

param =0 (for tra nsmitte r)

param=0 (adjustment set 1)
param=1 (adjustment set 2)

param=2 (adjustment set 3)

serialnumber.xml

identification.xml

version.xml

firmwaredate.xml

onlinevalue.xml

viewchannels.xml

status.xml

laststatusmessage.xml

hourscount.xml

usersettings.xml

calibration.xml

37

4 Transmitter

URL Description Parameter Answer (see

Appendix)

/config/getreldefinition Read off relay info rmation

of transmitter

/config/getoptions Read off options of

transmitter

/c onfig/getcoll ectiveal arm Read off alarm me ssages

of transmitter

param =0 (rel ay 1)
param =1 (rel ay 2)
param =2 (rel ay 3)

param =3 (rel ay 4)

reldefinition.xml

options.xml

collectivealarm.xml

Upload XML documents

URL Description Parameter Post Answer (see

Appendix)

/config/setusersettings
/config/setcalibration S et adj u stm ent da ta of

/config/setreldefinition Set relay information

/config/setoptions Set options of

/action/setresettm Not yet impleme n te d

Perform settings of
transmitter

transmitter

of transmitter

transmitter

param=0 (adjustment
set 1)
param=1 (adjustment
set 2)

param=2 (adjustment
set 3)

param =0 (rel ay 1)
param =1 (rel ay 2)
param =2 (rel ay 3)

param =3 (rel ay 4)

usersettings.xml usersettings.xml
calibration.xml calibration.xml

reldefinition.xml reldefinition.xml

options.xml options.xml

resettm.xml

Description of the XML elements

General elements

XML tag Description Type

measurement_value Parent element. Contains the chil d

elements value, unit, resolution
value Reading Numeric a l , decim al num ber
unit Unit ASCII
number_values Qty. Numeri cal, whole number

38

4 Transmitter

Elements in calibration.xml

XML tag Description Type

calibration_data Base element. Contains the child

el em ents unit, attenuatio n,
cal_reserved , cal_offset, cal_scale.

unit Se e general elem ents
attenuation Damping (0 - 15) Numeri cal, decimal num ber

cal_offset Offset Numeri cal, whole number
cal_scal e Parent e l ement. Contains the child

elemen ts cal_m in sca l e , cal_ m a xscale
cal_minscale Scaling value Numerical, decimal number
cal_maxscale Scaling value Numerical, decimal number

Elements in collectivealarm.xml

XML tag Description Type

colalarmtable Base element. Contains the child

alarm_numbers Number of alarm messages Nume ri cal, whole number
alarm Pare nt ele me nt. Contains the chil d

alarm_event Type of ala rm ASCII
alarm_state

el em ents alarm _num be rs, alarm

el em ents alarm _event, al arm_sta te

Status of the alarm

0 = alarm i nactive

1 = alarm active

Numerical, whol e num ber

Elements in firmwaredate.xml

XML tag Description Type

firmware_date Base element. Contains the child

el em ents ye ar, month, day
year Year Numeri cal, whole number
mo nth Month Numerical, whole number
day Day Numerical, whole number

Elements in hourscount.xml

XML tag Description Type

hourcount Base element. Contains the child

el em ent hours
hours S ervice hour co unter in h Num eric al , whol e num ber

39

4 Transmitter

Elements in identification.xml

XML tag Description Type

ident Base element. Contains the child

element device_id

device_id Transmitter type Numeri cal, whole number

Elements in laststatusmessage.xml

XML tag Description Type

mufmsg Base element. Contains the child

el em ents msg, sn, hours

msg Status m essage ASCII
sn Se ri al numbe r ASCII, 8 characters
hours S ervic e hour counter in h Numeri cal, whole number

Elements in onlinevalue.xml

XML tag Description Type

online_values Base element. Contains the child

el em ents number_val ues,
measurement_value

number_values Se e general elem ents
measurement_value See general elements

Elements in options.xml

XML tag Description Type

options Base element. Contains the child

ele m en ts devi ce_ options,
production_options

device_options Se e de v i ce_options description Numeri cal, whole number
production_opti ons S ee prod uction_optio ns descriptio n Numerical , whol e num ber

Elements in reldefinition.xml

XML tag Description Type

relay_data Base element. Contains the child

el em ents relay_channel, rel ay_number,
rel ay_status, sw_point_character,
sw_p oint_val ue, hys teresis_val ue

relay_channel M easurement channel l i nked to the

relay

rel ay_numb er Relay number (0 to 4) Num eric al , whol e num ber

Numeri cal, whole number

40

4 Transmitter

XML tag Description Type

relay_status

sw_point_charact

sw_p oint_value Switch p oint Numeri cal, decimal num ber
hys teresis_value Hysteresis Num eric al , decim al num ber

Status of relay

0 = off

1 = o n

Switch point: Switc h point:

0 = low-li mit mo ni toring

1 = high-lim i t monito ring

Numerical, whol e num ber

Numerical, whol e num ber

Elements in serialnumber.xml

XML tag Description Type

serialnumber Base element. Contains the child

el em ent number
number Se ri al number ASCII, 8 characte rs

Elements in status.xml

XML tag Description Type

mufstatus Base element. Contains the child

statemsg

staterel

statecounter Counter Numeric al , whol e num ber

ele m en ts st atems g, st a terel ,

statecounter

Status m essage

See statemsg description

Status relay

See staterel description

Numeri cal, whole number

Numerical, whol e num ber

Elements in usersettings.xml

XML tag Description Type

usersettings Base element. Contains the child

elements (pressure)*6,

(abs_pressure_pa_process)*,

(temperature_c_process)*,

(abs_pressure_pa_norm)*,

(temperature_c_norm)*,

(abs_pressure_pa)*, (area)*,

(correction_factor)*, (pi tot_factor)*,

setting_display, backlight, contrast,

lang uage, disp_msg
pressure Absolute pressure Num eric al , decim al numbe r

* Chi ld elements are opt io nal

41

4 Transmitter

XML tag Description Type

setting_display

backlight
contrast
language

disp_msg

abs_pressure_pa_process,
temperature_c_process
abs_pressure_pa_norm
humidity_norm
temperature_c_norm
area

correction_factor
p ito t_ fa ctor

Auto OFF background lighting
0 -> b ackground lighting auto off

1 -> b ackground lighting stay s on
Brightnes s of background lighting

0 to 9 (0 = off, 9 = max. )
Displ a y contrast
0 to 9 (0 = m i n., 9 = max.)
Language
0 ->German
1 ->Engli sh
2 ->French
3 ->Spanis h
4 ->Ital i an
5 ->J apane se
6 ->Swedish
Status m essages displ ay
0 = off
1 = o n
Pr ess u re pr oc ess data, absolute
pressure in Pa
Pr ess u re pr oc ess data, pro cess
temperature i n °C
Pre ssure standard da ta, absol ute
pressure in Pa
Pre ssure s tandard data, process
humidity in % RH
Pre ssure s tandard data, process
temperature i n °C
Cross-section of the duct in mm²

Correction factor
Pi tot tube facto r

Numerical, whol e num ber

Numerical, whol e num ber
Numerical, whol e num ber
Numerical, whol e num ber

Numerical, whol e num ber

Numeri cal, decimal num ber
Numeri cal, decimal num ber
Numeri cal, decimal num ber
Numeri cal, decimal num ber
Numeri cal, decimal num ber
Numeri cal, decimal num ber

Numeri cal, decimal num ber
Numeri cal, decimal num ber

Elements in versions.xml

XML tag Description Type

firmware_version Base element. Contains the child

element version

version Firm ware v ersio n: ASCII, 6 characte rs

Elements in viewchannels.xml

XML tag Description Type

view_channels Base element. Contains the child

el em ents number_val ues, view_channel

number_values Se e general elem ents

42

4 Transmitter

XML tag Description Type

view_channel Pare nt ele me nt. Contains the chil d

elements channel_info,

me asureme nt_v al ue, me as_status
channel_info Pare nt ele me nt. Contains the chil d

elements connector_info, channel_type
measurement_value See general elements
me as_status Parent ele me nt. Contains the child

el em ents mi n, max, mean
connector_info Channel (transmitter) ASCII
channel_type Parameter details ASCII
min. M i nimum readi ng Numeri cal, decimal num ber
max. Max i m um read i ng Nume ri cal, decimal num ber
me an Mean v al ue Numeri cal, decimal num ber

production_options description

Content of production_options is a double word type number (32
bit). The individual hardware options are bit-coded here.

xxxx xxxx xxxx xxxx xxxx xxx1 2222 3334

1 0=2-wire

1=4-wire
2 free
3 0=4 to 20 mA

1=0 to 20 mA

2=0 to 1 V

3=0 to 5 V

4=0 to 10 V
4 0=1 analog output

device_options description

Content of device_options is a double word type number (32 bit).
The individual instrument options are bit-coded here.

xxxx xxxx xxxx xxxx xxxx xxxx 1222 2345

1 free
2 free
3 free

43

4 Transmitter

xxxx xxxx xxxx xxxx xxxx xxxx 1222 2345

4 0=no relay present

1=relay present

5 0=no display

1=display present

statemsg description

Content of statemsg is a double word type number (32 bit). The
individual status messages are bit-coded here.

If statemsg = 0 there are no new messages.
If statemsg != 0

xxxx xxxx xxxx xxxx xxxx xxxx 1234 5678

1 free

2 free

3 free

4 free

5 free

6 1=transmitter information

7 1=transmitter warning

8 1=transmitter error

44

staterel description

Content of staterel is a double word type number (32 bit). The
individual relay states are bit-coded here.

xxxx xxxx xxxx xxxx xxxx xxxx xxxx x123

1 0=relay 4 is not set

1=relay 4 is set

2 0=relay 3 is not set

1=relay 3 is set

3 0=relay 2 is not set

1=relay 2 is set

4 0=relay 1 is not set

1=relay 1 is set

More information can be found in the download area at
www.testo.com.

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4.3.5. Adjusting the instrument

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4.3.5.1. Analog output adjustment

The purpose of adjusting the analog outputs is to adjust the signal
chain from the digital signal (within the transmitter) to the analog
outputs. The signal type that was appointed for the transmitter is
adjusted respectively for each channel (e.g. 4 to 20 mA or 0 to 1 V,
etc.).

4 Transmitter

1 Status LED

2. Contact ch. 1+

3. Contact ch. 1-

4. Service interface

Adjusting analog output 1

✓ With testo 6381 with current output: Load of max. 500Ω is

connected to channel 1 (see Plug-in connections for power
supply and channels, page 28)

✓ A precise multimeter (minimum requirement: resolution 6.5

digits, at least 5-times more accurate than the 6381) is
available.

If only a simple multimeter is available, the analog output
must not be adjusted.

✓ The service flap is open.

45

4 Transmitter

1. Connect the inputs of the multimeter with the contacts (2) and
(3) for channel 1.

2. Transfer the reference analog value measured with the
multimeter into the P2A software (see Adjusting the analog
output, page 92) or enter it via the user menu (see Performing
analog adjustment, page 61).

3. Disconnect connections between the multimeter and the

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contacts of the testo 6381 and close the service flap.

4.3.5.2. n-point adjustment

With an n-point adjustment, the parameters at the 3-6
measurement points are adjusted to the reference value. The
reference conditions are obtained by using a precise pressure
sensor that should be 5-times more accurate than the transmitter.

1 Positive pressure connection

2. Negative pressure connection

3. Pressure sensor

46

The number of measuring points is set to 3 by the factory
and can only be changed using the P2A software (see n-
point adjustment, page 91).

The n-point adjustment must always be carried out to its full
extent and in good time at all selected measurement points.

✓ A precise pressure sensor (5-times more accurate than the

transmitter, e.g. DPC precision pressure sensor from testo
industrial services) is available.

1. Connect the positive output of the pressure sensor (3) to the
positive pressure connection of the transmitter (1) and the
negative output of the pressure sensor (3) to the negative
pressure connection of the transmitter (2).

2. Transfer the reference pressure value created with the pressure
sensor into the P2A software (see n-point adjustment, page 91)
or enter it via the user menu (see Performing analog
adjustment, page 61).

3. Repeat step 2 for all of the measuring points.

4 Transmitter

4. Disconnect connections between the pressure sensor and the

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4.4. Operation

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pressure connections of the testo 6381.

4.4.1. Relationship between user menu and mini-DIN
socket is active

The testo 6381 can be parameterized using either the user menu or
the P2A software (see Parameterizing, adjusting and analyzing
software (P2A software) page 69).

The testo 6381 transmitter can only be operated via the
display and keypad if the display option is available.

If the testo 6381 is connected to the P2A software, the user
menu is blocked for the duration of the communication. The
message Service plug is shown in the display of the testo

6381. As soon as the P2A software is disconnected, the

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user menu is accessible again.

4.4.2. Key cover

To prevent unauthorized operation of the keys, the standard key
frame can be replaced with a key cover.

If the key cover has been assembled, the service flap must be
opened for operation.

47

4 Transmitter

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Attaching the key cover

✓ The service flap is opened, see Opening the instrument, page

21.

1. Unscrew screws (3) and remove key frame (2).

2. Insert key cover (1) into service flap and tighten screws (3).

3. Close and screw down the service flap.

4.4.3. Password protection

The user menu can be protected with a four-digit numerical code
(see Editing Main Menu Settings, page 55) so that access to the
user menu is denied to unauthorized persons not familiar with this
numerical code.

If the password protection is not to be used, the numerical code

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48

"0000" must be entered. This is also the status upon delivery.

4.4.4. Structure of user menu

At the main menu level, the user menu comprises the following:

• Main Menu Channel 1

• Main Menu Alarm

• Main Menu Settings

• Main Menu Analysis

• Main Menu Messages

• Main Menu Ident

• Main Menu Adjust

• Main Menu Reset

4 Transmitter

1 Channel 1 display
2 No display
3 Display for messages

Four keys enable the user to navigate/scroll through the menus and
enter/amend values and settings:

Key Function/description

SET • In Measuring Mode: changes to

parameterization

• In Parameterizing Mode: confirms a
selection or setting

ESC • Leaves a menu (without modifying any

settings)

X • Selecting: scrolls through menus

(downwards) or selectable alternatives

• Editing: changes to next digit (to the right)

49

4 Transmitter

Key Function/description

S • Selecting: scrolls through menus (upwards)

or selectable alternatives

• Editing: increases the value of the current

digit by 1

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4.4.5. Overview of the testo 6381 user menu

50

4 Transmitter

51

4 Transmitter

52

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4.4.6. The individual main menus

4.4.6.1. Editing main menu of channel 1

An overview is given in Overview of the testo 6381 user menu,
page 50).

You can perform basic settings for channel 1.

1. In the Measuring Mode press SET, select Main Menu

Channel 1 with X or S and confirm selection with SET.

One of the following parameters can now be selected using X
or S, after which the selection must be confirmed with SET:

• Channel 1 Unit

The parameter for this channel is selected.
Edit/select parameter with X or S, confirm with SET or abort

entry with ESC.

• Scale minimum for channel 1:

The lower scale limit is edited; Unit as selected above.
Editing the value: Scroll one digit to the right using X and

increase value of digit by 1 using S. Confirm with SET or abort
entry with ESC.

• Scale maximum for channel 1

The upper scale limit is edited;
Unit as selected above.
Editing the value: Scroll one digit to the right using X and

increase value of digit by 1 using S. Confirm with SET or abort
entry with ESC.

• Signal delay ("Attenuation") for channel 1

The analog signal can be delayed ("Attenuation"); a time
constant is selected for this (1 = no delay; 15 = longest delay)

Edit/select parameter with X or S, confirm with SET or abort
entry with ESC.

2. Continue to the main menu with X or S or return to Measuring

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Mode with ESC.

4 Transmitter

4.4.6.2. Editing Main Menu Alarm

With the alarm, the relays, available as options, are programmed.
In addition, the alarm statuses are shown on the display (top right)
(even without relays).

53

4 Transmitter

You can choose whether the alarm is to be used to monitor limit
values or as a collective alarm. If an alarm is to be used to monitor
limit values, you can choose between monitoring the minimum or
maximum value and set a limit value and hysteresis for each alarm.

In addition, every alarm can be linked to a clearly visible visual
alarm (display background lighting flashes).

An alarm delay between 0 and 240 seconds can still be assigned to
every alarm used for limit value monitoring so that both the
corresponding relay effect and the visual alarm are delayed. If the
alarm status goes out within the set alarm delay time, neither the
visual alarm nor a relay connection is triggered. .

With an alarm status present, the visual alarm and all relay outputs
can be reset by means of acknowledgement. The triggering of a
new alarm cannot be enabled until after the alarm status goes out.

1. In the Measuring Mode press SET, select Main Menu Alarm
with X or S and confirm selection with SET.

- Four alarms can be parameterized.

2. Select Alarm x with X or S and confirm selection with SET.

54

Using alarm to monitor limit values

NO contact

Monitoring minimum Monitoring maximum

Hysteresis

Limit value Limit value

Hysteresis

NC contact

Monitoring minimum Monitoring maximum

Hysteresis

Limit value Limit value

Hysteresis

3. Select Channel x (e.g. "Channel 1") with X or S and confirm
selection with SET.

4. Select Max control or Min control with X or S (see graphic).

5. Press SET and edit Limit value as well as Hysteresis: Scroll
one digit to the right using X and increase value of digit by 1
using S. Confirm with SET or abort entry with ESC.

6. Select Visual alarm with X or S. Select YES or NO with X or

7. Press SET and edit Alarm delay: Scroll one digit to the right

8. Return to Channel x with ESC.

9. Return to Alarm x with ESC.

10. Change to the other relays using X or S and perform settings

Using alarm as collective alarm or not using it at all

If an alarm is assigned to the collective alarm, the relay is switched
and a visual alarm can be issued via the display as soon as (at
least) one of the warning or error messages of the testo 6381
transmitter becomes active.

✓ Alarm is selected (see previous steps 1 and 2).

1. Use X or S to determine whether Alarm x should be used as a

2. If collective alarm is selected: Select Visual alarm with X or S.

3. Change to another alarm using X or S and perform settings in

4. Return to Main Menu Alarm with ESC.

5. Continue to Main Menu Settings with X or S or return to

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4 Transmitter

S. Confirm with SET or abort entry with ESC.

using X and increase value of digit by 1 using S (0 to 240
seconds possible). Confirm with SET or abort entry with ESC.

in the same way.

The messages affecting the collective alarm can only be
selected in the P2A software, see Using the software, page
72

Collective alarm or not used. Confirm selection with SET.

Select YES or NO with X or S. Confirm with SET and return to

Alarm x.

the same way.

Measuring Mode with ESC.

4.4.6.3. Editing Main Menu Settings

You can edit instrument settings and other settings.
> In Measuring Mode, press SET, select Main Menu Settings

using X or S and confirm selection with SET.

You can edit settings for:

• Display

• Language

• Code

• Units

55

4 Transmitter

◦ Absolute pressure
◦ Area
◦ Temperature
◦ Standard data
◦ Process data

Editing display settings

You can set the brightness and contrast of the display.

1. Select Display Settings with X or S and confirm selection with

SET.

2. Select Backlight or Contrast with X or S and confirm
selection with SET.

One of the following parameters can now be selected using X or
S, after which the selection must be confirmed with SET:

• Backlight
The display illumination is changed.
Edit/select parameter with X or S, confirm with SET or cancel

entry with ESC (the effect of the change in parameter can be
seen during input).

• Contrast
The brightness difference between the display background and

the displayed values is changed.
Edit/select parameter with X or S, confirm with SET or cancel

entry with ESC (the effect of the change in parameter can be
seen during input).

• Backlight 24h on
Select On or Off using X or S and confirm with SET.
Off: The display light switches off automatically if no button was

pressed for 10 seconds.
On: The display light is activated

3. Return to Display Settings with ESC and use
continue to Language.

X or S to

56

Selecting language

You can select the language for the plain text line in the display.
> Press SET, select required language with X or S, confirm

selection with SET and return to Language.

4 Transmitter

Only choose a language that you can understand well.

Select unit

This setting affects the unit of the standard and process data.

1. Press SET, select Change parameters with X or S, confirm
selection with SET or cancel with ESC.

2. Select Change unit with X or S, confirm selection with SET or
cancel with ESC.

3. Select the required variable (absolute
pressure/area/temperature) with X or S, confirm selection with

SET or cancel with ESC.

4. Select the required unit with X or S, confirm selection with SET
or cancel with ESC.

5 Return to Change unit with ESC and continue to Standard

data with X or S.

Editing standard data

Setting individual values for the standard data to calculate the
volumetric flow rate.

1. Select Standard data with X or S, confirm selection with SET
or cancel with ESC.

2. Select the required variable (absolute pressure/temperature)
with X or S, confirm selection with SET or cancel with ESC.

3. Scroll one digit to the right using

X and increase value of digit

by 1 using S. Confirm with SET or abort entry with ESC.

4. Return to Standard data with ESC and useX or S to continue
to Pressure process data.

Editing pressure process data

Setting of the process data for the Pitot tube calculation.

1. Select Pressure process data with X or S and confirm
selection with SET.

2. Select the required variable (absolute
pressure/humidity/temperature/cross-section/Pitot tube
factor/correction factor) with X or S, confirm selection with SET
or cancel with ESC.

3. Scroll one digit to the right using X and increase value of digit
by 1 using S. Confirm with SET or abort entry with ESC.

4. Return to Pressure process data with ESC.

57

4 Transmitter

5. Return to Change parameters with ESC and useX or S to
continue to Code.

Editing code settings

You can set the access code (password).

If a code other than "0000" (factory setting) is set, the
transmitter can only be operated once this code has been
entered via the menu.

1. Select Code with X or S and confirm selection with SET.

2. Scroll one digit to the right using X and increase value of digit
by 1 using S. Confirm with SET or abort entry with ESC.

3. Return to Code with ESC.

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4. Return to Main Menu Settings with ESC.

4.4.6.4. Editing Main Menu Analysis

You can test the functionality of analog and relay outputs. In
addition, you can read off the minimum and maximum values (since
the last voltage supply or reset of the min./max. values).

58

Testing functionality of analog outputs

This function affects the analog outputs directly, not only
the test contacts.

1. In the Measuring Mode press SET, select Main Menu Analysis
with X or S and confirm selection with SET.

- Test Analog Output is shown.

2. Press SET, scroll one digit to the right using X and increase
value of digit by 1 using S. Any analog output value can be
predefined, e.g. for an analog output of 4 to 20 mA, the value
"6.0 mA". Confirm with SET or abort entry with ESC.

3. Accept setting by pressing SET and test with multimeter
(minimum requirement: resolution 6.5 digits, at least 2-times
more accurate than the 6381) as follows:

Analog output 1: Via test contacts under service flap, see
diagram.

4 Transmitter

1 Channel 1

test contacts

2 Service

interface

3 Multimeter

4. Return to Test Analog Output with ESC and useX or S to
continue to Test Relay Output.

Testing functionality of the pressure sensor (Test pressure

sensor)

This function is only required to calibrate the pressure
sensor.

Testing functionality of relay outputs

1. Press SET and choose between Alarm 1, 2, 3, 4 with X or S.

2. Press SET.
The relay can now be tested. You can choose between OFF

and ON using X or S. If ON is chosen, the NO contact is
closed, the NC contact opened. If OFF is chosen, the NC
contact is closed, the NO contact opened.

3. To test, route a measuring cable from the relay terminals (see
Connecting the relay outputs, page 25) out of the transmitter to
a multimeter (resistance measurement) or continuity tester.

4. Return to Test Relay Output with SET (starts relay test) or

ESC (exits the menu without relay test).

Reading off min./max. values of channels

To reset the max./min. values, see Editing Reset main menu, page
63

1. Read off the min./max. values of the channel in succession with
X or S and return to the Main Menu Analysis with ESC.

2. Continue to Main Menu Message with X or S or return to
Measuring Mode with ESC.

59

4 Transmitter

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4.4.6.5. Editing Message main menu

Messages can be confirmed/acknowledged, the last messages can
be called up and the display of the messages can be switched on
or off.

Using the P2A software (see Parameterizing, adjusting and
analyzing software (P2A software), page 69) you can
predefine whether messages are to be shown in the
display.

1. In the Measuring Mode press SET, select Main Menu Message

with X or S and confirm selection with SET.

2. Confirm Confirm message using SET.

3. Select Last messages with X or S and confirm with SET.

4. Scroll between the warning and error messages recorded so far

using X or S and return to Last messages using ESC.

5. Select Information with X or S and confirm with SET.

6. Scroll between the status messages recorded so far using X or

S and return to Information using ESC.

7. Continue to Display of message with X or S.

ON: Measurements are shown on the display in Measuring

Mode.

OFF: No messages shown on display.

8. Select ON or OFF with X or S and confirm selection with SET.

9. Return to Main Menu Message with ESC.

1 Operating hours at the

time of message

2 Message code (see

Status, warning and error

messages, page 63).
3 Message text
4 Message number

(example: "4/7" refers to

the fourth of seven

messages)
5 Number of messages

present (example: "4/7"

refers to the fourth of

seven messages)

60

10. Continue to Main Menu Ident with X or S or return to
Measuring Mode with ESC.

An overview of the messages can be found in Status,

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4.4.6.6. Calling up Main Menu Ident

warning and error messages, page 63

4 Transmitter

1 Instrument type
2 Build number
3 Firmware

version

4 Serial number

1. In the Measuring Mode press SET, select Main Menu Ident
with X or S and confirm selection with SET.

- The type, firmware version, build number and serial number of
the transmitter are displayed.

This information is required when servicing.

2. Return to Main Menu Ident with ESC.

3. Continue to Main Menu Adjust with X or S or return to

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Measuring Mode with ESC.

4.4.6.7. Editing Main Menu Adjust

Also see Analog output adjustment, page 45, for instructions on

61

how to perform the analog adjustment.

Performing analog adjustment

1. In the Measuring Mode press SET, select main menu Adjust
with X or S and confirm selection with SET.

Each channel is adjusted at three points in the analog
range (at 10 %; 50 %; 90°% of the analog scale).

2. Select Analog Adj. Ch. 1 with X or S and confirm with SET.

3. Use X or S to select Adj. Point 1.

4 Transmitter

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4. Press SET. Read off multimeter display and enter this value in

the user menu. Do this by scrolling one digit to the right using X
and increasing the value of digit by 1 using S. Confirm with

SET or abort entry with ESC.

5. Use X or S to select Adj. Point 2.

6. Press SET. Read off multimeter display and enter this value in

the user menu. Do this by scrolling one digit to the right using X
and increasing the value of digit by 1 using S. Confirm with

SET or abort entry with ESC.

7. Use X or S to select Adj. Point 3.

8. Press SET. Read off multimeter display and enter this value in

the user menu. Do this by scrolling one digit to the right using S
and increasing the value of digit by 1 using X. Confirm with

SET or abort entry with ESC.

9. Return to main menu Adjust with ESC.

10. Continue to main menu Reset with X or S or return to
Measuring Mode with ESC.

Performing the pressure adjustment

Also see n-point adjustment, page 46, for instructions on how to
perform the pressure adjustment.

1. In the Measuring Mode press SET, select main menu Adjust
with X or S and confirm selection with SET

.

The pressure adjustment can be performed at 3 to 6
adjustment points.

2. Select Adjust Pressure with X or S and confirm with SET.

3. Use X or S to select Adj. Point 1.

4. Press SET. Read off pressure sensor display and enter this
value in the user menu. Do this by scrolling one digit to the right
using X and increasing the value of digit by 1 using S. Confirm
with SET or abort entry with ESC.

5. Repeat steps 1 to 4 for adjustment points 2 to 6.

6. Return to main menu Adjust with ESC.

7. Continue to main menu Reset with X or S or return to
Measuring Mode with ESC.

62

4.4.6.8. Editing Reset main menu

You can reset the factory settings for the following:

• Instrument

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4.5. Status, warning and error messages

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• Min./max. values

Resetting to the factory settings means resetting to the
order specification, i.e. the specific condition at the time of
supply to the customer.

1. In the Measuring Mode press SET, select Main Menu Reset
with X or S and confirm selection with SET.

- Reset Device to factory settings is displayed.

2. Select the setting to be reset using X or S and confirm
selection with SET.

- Reset Completed is displayed.

3. Return to the reset setting with ESC or SET and return to Main

Menu Reset with ESC.

4. Continue to the Main Menu Channel 1 with X or S or return to
Measuring Mode with ESC.

To achieve optimum operational reliability (machine availability),
the transmitter shows the following via the user menu or the P2A
software

• Status messages

• Warning messages

• Error messages

in each case for the testo 6381 transmitter.
All messages are stored in the transmitter with an operating hours

stamp. Use the user menu (see Editing Message main menu, page

60) or the P2A software (see Transmitter history, page 93) to view

the message history.
In the transmitter, the last 60 status messages and the last 120

error and warning messages are stored in a ring memory. There is
no limit in the P2A software.

4 Transmitter

63

4 Transmitter

4.5.1. Status messages

Status messages show the current operating status of the testo

6381.

Message Display Description

02506 Sensor

initialization

01D19 Service plug The Mini-DIN socket is connected

00300 New limit value The limit value has been changed

00301 Scaling changed The scaling has been changed
00117 Adjustment DeltaP An n-point adjustment was

02104 Analog adjustment An analog adjustment has been

00530 Change solenoid

valve

00500 Transmitter reset The transmitter was reset to the

0052F Reset Min/Max Resets all saved Min/Max values

00503 Reset device to

fact

00307 User Setting

Change

Message appears while the
transmitter is starting up. If the
message disappears, the
transmitter is ready for operation.

to: the USB adapter for P2A
software, the adjustment adapter
or the service plug (is not
recorded/no number)

or shifted

performed.

made
The solenoid valve should be

changed

factory settings and is restarted.

for all channels
A factory reset of the transmitter

was performed
User Setting Change: General

settings were changed for the
transmitter.

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64

4 Transmitter

4.5.2. Warning messages

Warning messages show an early warning or a current malfunction

Message Display Cause Remedying of fault

00E00 T ambient high The ambient

00E01 T ambient low The ambient

00809 Pressure too

00E02/00E
05

0081C Alarm 1 Depending on the

0081D Alarm 2 Depending on the

0081E Alarm 3 Depending on the

0081F Alarm 4 Depending on the

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which may negatively impact measuring.

temperature exceeds
the permissible
temperature for the
transmitter

temperature is below
the permissible
temperature for the
transmitter

The process pressure

high

exceeds the pressure
intended for the
transmitter

Supply voltage
low

The supply voltage is
below the minimum
voltage required for the
transmitter

parameterization of the
relay

parameterization of the
relay

parameterization of the
relay

parameterization of the
relay

Take necessary
measures to lower
ambient temperature,
e.g. through venting or
cooling

Take necessary
measures to raise
ambient temperature,
e.g. through heating

Remove the transmitter
from the process and
take any necessary
measures to lower the
pressure

Take measures to
ensure sufficient
voltage supply

Depending on the
parameterization of the
relay

Depending on the
parameterization of the
relay

Depending on the
parameterization of the
relay

Depending on the
parameterization of the
relay

65

4 Transmitter

4.5.3. Transmitter error messages

Message Display Cause Remedying of fault

01505 Watchdog error Due to a processor

01115 Low adjustment

01116 High adjustment

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4.5.4. Handling alarm messages

Error messages show a current malfunction.

If the problem occurs
error, the transmitter
performs an automatic

frequently, contact

Testo Service.
restart.

temperature

temperature

Shown on the
display

7

The ambient
temperature is too low
during the pressure
adjustment.

The ambient
temperature is too high
during the pressure
adjustment.

Can be used for
collective alarm8

Take necessary

measures to raise

ambient temperature,

e.g. through heating.

Take necessary

measures to lower

ambient temperature,

e.g. through venting.

Additional
message end9

New limit value x
Scaling changed x
Adjustment DeltaP x
Pressure too high x x
Alarm 1 x
Alarm 2 x

7

If multiple messages/alarms are activated at the same time, only the last
message/alarm is shown. If this is cancelled, the other messages that are still
active are no longer displayed.

8

The message can be assigned the collective alarm function, which means that
the collective alarm is activated as soon as at least one of the messages
assigned to it is activated. The collective alarm can be assigned to each of the 4
optional relays. The collective alarm is then always the same, as it can only be
defined once.

9

The message is shown upon the occurrence of the event causing the message
as well as when closing. Two entries appear in the history in the P2A software:
Message text_start and Message text_end.

66

4 Transmitter

Shown on the
display

7

Can be used for
collective alarm8

Alarm 3 x
Alarm 4 x
Transmitter reset x
Analog adjustment x
T ambient high x x
T ambient low x x
Supply voltage low x x
Watchdog error x

Perform the Confirm message function (acknowledgement of the
alarm via the control keys on the transmitter):

• The message/alarm is no longer shown on the display and the
optical alarm goes out, where applicable. If multiple
messages/alarms are active at the same time, all are reset
simultaneously.

• If at least one message is assigned to the collective alarm, the
collective alarm is reset. If the collective alarm is set on a relay,

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the relay is also reset, meaning switched to its neutral position.

4.5.5. 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"

Status
message in
the display

0 to

Watchdog
error

Value below
min. scale

Value above
max. scale

industry standard.

Class Display

Analog output
value in the
display

20 mA

Error Previous

21 mA 3.8 mA 1.1 V 5.5 V 11 V
value stops

Underrange Reading 0 mA 3.8 mA 0 V 0 V 0 V

Overrange Reading 20.5 mA 20.5 mA 1.1 V 5.5 V 11 V

4 to
20 mA

Additional
message end9

1 V 5 V 10 V

67

4 Transmitter

Status
message in
the display

Pressure too

Class Display

Analog output
value in the
display

Overrange ooooo · 20.5 mA 20.5 mA 1.1 V 5.5 V 11 V

high

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4.6. Maintenance and cleaning

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4.6.1. Maintaining the instrument

We recommend that the adjustment and settings of the transmitter
be checked at regular intervals using the

• User menu (Operation, page 47) or

• P2A software (Parameterizing, adjusting and analyzing software
(P2A software), page 69)

Convenient "remote monitoring" of the transmitter can be
implemented, for example by using a relay as a collective alarm
(see Editing Main Menu Alarm, page 53) whose messages are
forwarded to a local alarm transmitter (horn, light) or PLC.

4.6.2. Cleaning the instrument

• Only clean the instrument carefully with a moist cloth.

• Do not use aggressive cleaning agents.

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• Do not use any solvents.

68

5 Parameterizing, adjusting and analyzing software (P2A software)

5 Parameterizing, adjusting and analyzing

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5.1. Specifications

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software (P2A software)

The P2A software is used for the parameterizing, adjustment and
analysis of testo transmitters. The following applies:

• Generally, all newer testo transmitters (as of 2007) are
supported.

• Included with every testo transmitter that is bought new is a CD
that contains a free upgrade of the software, which includes the
device drivers for all transmitters that can be attached at this
time.

• This upgrade can be downloaded at any time via the testo
homepage "www.testo.com/Download/P2A".

The software must only be bought one time, 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 93).

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.

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.

69

5 Parameterizing, adjusting and analyzing software (P2A software)

Parameter files are ".cfp" format files.

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5.1.2. System requirements

Operating system

• Windows® 2000 SP4

• Windows® XP Home/Professional

• Windows® Vista

Computer

• Pentium processor of at least 400 MHz or equivalent

• 128 MB RAM

• Graphics resolution of at least 1024 x 768

• Unused hard drive capacity of at least 15 MB

• CD-ROM drive

• USB interface

• At least Internet Explorer 5.0.

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

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with the transmitter).

5.1.3. Scope of delivery

Included in the scope of delivery are:

• P2A software

70

• USB driver

When working with the parameterizing, adjusting and
analyzing software (P2A software), previous knowledge of
Windows
in this instruction manual relates to Windows

®

operating systems is assumed. The description

®

XP.

5 Parameterizing, adjusting and analyzing software (P2A software)

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5.2. First steps

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5.2.1. Installing the software/driver

Administrator rights are required to install programs and
drivers under Windows

®

2000 SP4, XP and Vista.

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. Insert product CD (supplied with the transmitter).

®

Explorer and start the file P2A upgrade.exe

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2. Open Windows
on the product CD.

3. Follow the directions of the installation wizard.

5.2.2. Starting the software

5.2.2.1. Starting the program

> Select: [Start] > All Programs > Testo > P2A Software.

- The program window is opened (see User interface page 72).

5.2.2.2. Establishing a connection with the instrument

Multiple instruments can be attached, however only one connection
is active at all times.

✓ USB driver is installed (see Installing USB driver page 71).

1. Start the P2A software.

2. Connect adapter (supplied with the P2A software) to the service
interface of the instrument (see Service interface page 15).

71

5 Parameterizing, adjusting and analyzing software (P2A software)

3. Connect instrument/adapter to the PC via the USB interface.

- The instrument file of the attached instrument is shown in the
file list.

5.2.2.3. Activating the connection with the instrument

> Click on the desired instrument file.

- The selected file is marked in colour and the connection with
the instrument is activated.

If a connection with the instrument is established when the program
is started, the corresponding instrument file is marked

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5.3. Using the softwar e

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5.3.1. User interface

automatically.

72

1 Menu bar:

Menu Command Explanation

File Open Shows the Windows dialogue for

searching and opening files.

5 Parameterizing, adjusting and analyzing software (P2A software)

Menu Command Explanation

Save as Saves the parameters of an

instrument or parameter file
under a new name.

Edit Copy Copies the parameters of the

marked instrument or parameter
file in the cache.

Paste Pastes the parameters from the

cache in the marked instrument
or parameter file.

View Toolbar

Status bar

? Check instrument

connections

Activates/deactivates the toolbar
or status bar.

Checks the connections to a
connected instrument without the
instrument having to be
activated.

Service A text file with the most important

information on the computer and
the software is opened via

Display service data.

Information Shows the version number of the

P2A software.

2 Toolbar: Shows the Windows-compliant icons for editing.
3 File:

Icon File Explanation

Symbol shows a
transmitter

Instrument
file

Instrument file
Connection to the instrument has

been established.

<Type> <Serial number>.cfm

File name should not be
changed.

Symbol shows a
transmitter with a red
minus sign in the upper
left corner

Instrument
file

Instrument file
Connection to the instrument has

not been established.

73

5 Parameterizing, adjusting and analyzing software (P2A software)

Icon File Explanation

Symbol shows a
transmitter with a white
P for parameter file in
the upper left corner

Parameter
file

<Type> <Serial number>
<Date> <Time>.cfp

File name can be changed.
The name can be selected freely,

but it is recommended that you
retain the reference to the
instrument.

Parameter files are always
marked red; the parameter
values they contain are only
forwarded to the instrument after
being transmitted to the
instrument file.

4 Function buttons: Dialogues on editing and testing the

instrument are opened by means of the buttons.

[Change parameterization] see Changing instrument/parameter

file page 75

[Test/analyze transmitter] see Chapter Analyzing/testing the

transmitter page 86

[Adjusting the transmitter] see Chapter Adjusting the transmitter

page 91

[Transmitter history] see Transmitter history page 93

5 File information:

Status Shown in the window

An instrument file is
selected

A parameter file is
selected

Type, serial number, firmware version of the
instrument.

Type, serial number and firmware version of
instrument for which the parameter file was
created.

Connection status Green = connection is active

Red = connection is inactive

6 Status bar: Shows the current status when editing via the menu

bar.

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5 Parameterizing, adjusting and analyzing software (P2A software)

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5.3.2. Editing instrument/parameter file

5.3.2.1. Changing instrument/parameter file

✓ The desired instrument/parameter file is marked.

1. Click on [Change parameterization].

- The Properties of <Instrument type> <Serial number>
dialogue is opened with the Change parameterization register.

If the parameters were transmitted from other parameter files into
the instrument file, a message is shown with which you can
transmit the new parameters to the connected instrument using

[Yes].

> If the parameters should not be transmitted, click on [No].

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2. Change or enter parameters in the corresponding fields.

Field Explanation

Unit/
Analog output

All analog outputs are parameterized in this
mask.

75

5 Parameterizing, adjusting and analyzing software (P2A software)

Field Explanation

Unit/analog output
(graphic)

Unit: 0 to 1 V/5 V/10 V or 0 to 20 mA/4 to
20 mA.

Vertical: Current version of the analog output
(cannot be changed).

Horizontal: Min./max. scale end points of
selected unit.

The curve changes in accordance with the
entered value of scale minimum and

maximu m.
Scale minimum/
maximu m

The endpoints of the scaling can be selected

up to the stored scale minimum and

maximum. In the process, scaling can take

place beyond the measuring range in order

to adjust the analog output to the customer

system, see Scaling, page 16
Unit Selection of the physical unit.

When changing the unit, standard values are

set for scale minimum and maximum.

Caution!

When changing the phys. unit, the relay limit

values are set to the assigned default values.
Signal delay

(graphic)

Curve changes according to the set signal

delay.
Signal delay Time interval in stages 1 – 15:

1 = no delay

15 = longest delay.

The signal delay is added to the reaction time

of the sensor. The signal delay shows

averaging over the time interval of the

selected stage in seconds:

Example

Stage 10 = average of the readings from the

last 10 seconds.

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5 Parameterizing, adjusting and analyzing software (P2A software)

Field Explanation

Limit values, relay 1 to 4/alarm
values, alarm 1 to 4

In this mask, the relays or display
alarms are parameterized.

Relay x/alarm x Four relays or alarm values are

available (optional).

Not used Relay is not used.

Hysteresis image and input
options are hidden.

Collective alarm A relay can be used as a collective

alarm detector in the event that
selected messages appear.
Selection of the messages (OR
linkage) by selecting the
checkbox.

Min control If switched to ON (NO contact) or

OFF (NC contact) under the limit
value; in the event of a
subsequent exceeding of Limit

value plus Hysteresis, it is

switched to OFF (NO contact) or
ON (NC contact).

77

5 Parameterizing, adjusting and analyzing software (P2A software)

Field Explanation

Max control If switched to ON (NO contact) or

OFF (NC contact) above the limit
value; in the event of a
subsequent undershooting of

Limit value minus Hysteresis, it

is switched to OFF (NO contact) or
ON (NC contact).

78

The graphic display in the centre of the screen refers to
the relay wiring as a NO contact (ON).

Hysteresis To avoid switching cycles.
Channel Selection of the channel that is to

be monitored.

Limit value Values for the limits of the unit

selected in Unit/analog output; 4
decimal places.

When changing the phys. unit, the
relay limit values are set to the
default values.

Visual alarm display Checkbox is activated: Upon the

appearance of the selected alarm,
the background lighting of the
display flashes.

Field Explanation

Alarm delay The desired alarm delay for the

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Field Explanation

Basic settings Setting the pressure process data for Pitot

5 Parameterizing, adjusting and analyzing software (P2A software)

alarms of the min/max control and
the visual alarm is entered in the
input field (0 to 240 seconds
possible).

The alarm delay has no effect on
the collective alarms.

tube measurement and standard data for
volumetric flow rate measurement.

Absolute pressure Absolute pressure existing in the process.

The entered absolute pressure value is
included in the Pitot tube calculation.

Temperature Temperature existing in the process. The

entered temperature value is included in the
Pitot tube calculation.

Humidity Humidity existing in the process. The entered

humidity value is included in the Pitot tube
calculation.

79

5 Parameterizing, adjusting and analyzing software (P2A software)

Field Explanation

Pitot tube factor The Pitot tube correction factor depends on

the shape of the Pitot tube (see operating

instructions of the Pitot tube).

The entered correction factor has a direct

proportional effect on the volumetric flow

rate.
Cross-section of the

duct
Correction factor The correction factor enables an adjustment

The entered value is included in the Pitot

tube calculation.

to the flow profile in the duct.

The entered correction factor is included in

the Pitot tube calculation.

80

Absolute pressure The entered value and the selected unit are

included in the calculation of the standard

volumetric flow rate.
Temperature The entered value and the selected unit are

included in the calculation of the standard

volumetric flow rate.

[Reset] Button for resetting the standard data to the

factory settings.

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5 Parameterizing, adjusting and analyzing software (P2A software)

Button Explanation

Ethernet Networking the transmitters via Ethernet.

For a multitude of applications, measurement
data can be simultaneously recorded,
documented and visualized.

Start wizard... Address allocation of the testo 6381 with

Ethernet module:

IP address Transmitter IP address

81

5 Parameterizing, adjusting and analyzing software (P2A software)

Button Explanation

Prior to the automatic allocation of the IP
address, the network cable must be connected
to the transmitter (see Mains connection, page

33).
If the instrument is used as a Saveris

subscriber:

• Saveris base must be functional.

• Saveris base must be connected to the

IP address of the
device

network.

Address allocation of the testo 6381 with

Ethernet module:

Manual • Define the IP address of the transmitter

• Enter netmask

• Enter gateway

Automatic Automatic allocation of the IP address

82

Only when using the transmitter Ethernet modules
in Saveris mode

Manual • Take the IP address from the InfoBase

menu window of the Saveris base

• Enter IP address

#
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5 Parameterizing, adjusting and analyzing software (P2A software)

Field Explanation

Display Setting the display functions (if a display is

available on the transmitter).

Continuous display

Display lighting is permanently switched on.

lighting
Display lighting

when button is

When a particular button on the instrument is

pressed, the display lights up for 10 seconds.
pressed
(10 seconds)

Display brightness
(0 to 9)

Setting the brightness between 0 and 9:

0 = dark

9 = light
Display contrast

(0 to 9)

Setting the contrast between 0 and 9:

0 = low contrast

9 = high contrast
Display of the error

messages

Selection of whether the error messages

should be shown in the display.
Display language Selection of the language.
New password The password consists of four numbers,

each of which must be between 1 and 9.

If the password protection is not to be used,

the numerical code "0000" must be entered.

83

5 Parameterizing, adjusting and analyzing software (P2A software)

Field Explanation

[Adopt new

Button for confirming the new password.

password]
Valid password Display of the current password.

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Field Explanation

Zeroing cycle Setting the interval of the automatic zeroing

with solenoid valve.

The accuracy specifications are only valid for the zeroing
cycle of 15 sec set by the factory.

Zeroing cycle setting Selection of the time interval after which the

automatic zeroing cycle is to occur.
Recommendation: 15 sec

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5.3.2.2. Saving parameters

Parameters can be saved in new parameter files.

1. Mark instrument/parameter file.

2. Click on File > Save as in the menu bar.

3. Select storage location and enter the file name.

4. Click on [Save].

- The new parameter file is shown in the file list.

84

5 Parameterizing, adjusting and analyzing software (P2A software)

Only the parameters are saved from an instrument file; the history
data are not adopted.

The original name (Instrument type, Serial number) is
suggested with the current date/time as standard, e.g.
"testo 6381 01234578 061120 1403.cfp".

For a standard installation, the files are saved under
"C:\Documents and Settings\All Users\Shared
Documents\P2A Software". The path can differ depending

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on the version of the operating system.

5.3.2.3. Opening the parameter file

All parameter files stored in the standard directory path are
automatically displayed in the file list when the software is started.

You can also open parameter files that are stored in other
directories.

1. Click on File > Open in the menu bar.

2. Select the storage location and click on the requisite file.

3. Click on [Open].

- The selected file is opened. This can be changed and saved

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(see Editing instrument/parameter file page 75).

5.3.2.4. Copying and pasting parameters

The parameters of a parameter file can be transmitted to an
instrument file or another parameter file from the same instrument
type.

1. Select file from which parameters are to be copied.

2. Click on Edit > Copy in the menu bar.

3. Select the file which is to be modified.

4. Click on Edit > Paste in the menu bar.

- The parameters are transmitted to the file.

You can also use the common keyboard shortcuts for
copying (CTRL+C) and pasting (CTRL+V).

Parameters can also be transmitted using drag & drop,
where you drag the icon of the parameter file onto the icon
of the target instrument file.

5. Connect and select corresponding instrument.

6. Click on [Change parameterization].

7. Confirm confirmation request.

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5 Parameterizing, adjusting and analyzing software (P2A software)

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- Parameter data are transferred to the instrument.

5.3.2.5. Deleting instrument/parameter file

Instrument/parameter files can be deleted from the file list.

1. Click on the file that is to be deleted with the right mouse button.

2. Select the command Delete in the context menu.

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- The instrument or parameter file is deleted from the list.

5.3.2.6. Creating a new instrument file

It is possible to create an instrument file without restarting the P2A
software.

✓ Transmitter must be connected.

1. Click on File > New connection in the menu bar.

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5.3.3. Analyzing/testing the transmitter

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- Connection to the transmitter is established.

In this section, you can test the outputs of the connected
instrument, read off the limit values and reset the parameters to the
factory settings.

The function is only available for instrument files.

5.3.3.1. Analyzing/testing the instrument

86

✓ The required instrument file is marked.

1. Click on [Test/analyze transmitter].

- The Properties of <Instrument type> <Serial number>
dialogue is opened with the Test/analyze transmitter register.

2. Perform action:

Action Explanation

Carrying out factory
reset

Testing analog
output

Reset the unit, limit value and hysteresis
parameters to factory settings (see below).

Test channel 1 (see Testing functionality of
analog outputs, page 58).

Test switch outputs Manually switch relays 1 to 4 to test for

proper function (see Testing functionality of
relay outputs, page 59).

5 Parameterizing, adjusting and analyzing software (P2A software)

Action Explanation

Display min./max.
values

Overview of the minimum and maximum
values measured since the last reset of the
transmitter (see Displaying min./max. values,
page 90).

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3. Click on [OK] or [Cancel] to close the dialogue.

5.3.3.2. Carrying out factory reset

✓ The required instrument file is marked.

1. Click on [Test/analyze transmitter].

- The Properties of <Instrument type> <Serial number>
dialogue is opened with the Test/analyze transmitter register.

2. Mark transmitter test.

- Current operating hours are shown.

3. Confirm control query to perform the reset.

- The values are reset to the customer-specific factory settings.

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4. Click on [OK] or [Cancel] to close the dialogue.

5.3.3.3. Testing analog output

✓ The required instrument file is marked.

1. Click on [Test/analyze transmitter].

- The Properties of <Instrument type> <Serial number>
dialogue is opened with the Test/analyze transmitter register.

2. Mark channel and test values.

Field/button Explanation

Transmitter test Check the analog outputs (see Testing

functionality of analog outputs, page

58).

87

5 Parameterizing, adjusting and analyzing software (P2A software)

Field/button Explanation

Current reading Readings are updated every second.
Unit Unit according to the type of analog

output.

Default value Freely definable output value for the

respective type of analog output (V or
mA), 1 decimal place.

[Activate] The entered default value is forwarded

to the corresponding analog output
and to the test contacts by clicking.

A warning informs that the value is
being transmitted to the connected
instrument in the event of existing
cabling.

Now check the analog output using a
precise multimeter.

[Deactivate] Finish entering the electrical variables

at the analog output.
The analog output returns to the

current reading again.

3. Click on [OK] or [Cancel] to close the dialogue.

- The analog output and the relay return to Measuring Mode
again.

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5.3.3.4. Testing switch output relays 1 to 4

✓ The required instrument file is marked.

1. Click on [Test/analyze transmitter].

- The Properties of <Instrument type> <Serial number>
dialogue is opened with the Test/analyze transmitter register.

2. Mark Relay tests and test the values.

Field/button Explanation

Test the relay function (see Testing

functionality of relay outputs, page 59).

[Activate relay n] Close contact.

A warning informs that the value is being
transmitted to a connected PLC, external
display, etc. in the event of existing cabling.

[Deactivate relay
n]

Open contact.
A warning informs that the value is being

transmitted to a connected PLC, external
display, etc. in the event of existing cabling.

3. Click on [OK] or [Cancel] to close the dialogue.

- The analog output returns to Measuring Mode again.

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5.3.3.5. Displaying min./max. values

The transmitter saves the minimum or maximum value for each
channel (measured since the last voltage supply or since the last
manual reset).

✓ The required instrument file is marked.

1. Click on [Test/analyze transmitter].

- The Properties of <Instrument type> <Serial number>
dialogue is opened with the Test/analyze transmitter register.

2. Mark Min./max. values.

Field/button Explanation

Min./max. values View the min./max. values of each channel.

Only the values within the measuring range
are shown.

90

Channel Channel 1 min./max.
Value Min. or max. value, 1 decimal place.
Unit Unit selected in Unit/analog output.

3. Reset Min./max. values.

4. Click on [R eset mi n . /max. va l ues] .

5. Confirm control query to perform the reset.

- The values are reset to the factory settings.

5 Parameterizing, adjusting and analyzing software (P2A software)

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5.3.4. Adjusting the transmitter

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6. Click on [OK] or [Cancel] to close the dialogue.

This function is used to adjust an attached instrument. The
following adjustments may be carried out using the software:

• Analog adjustment (entry via assistant/wizard)

• n-point adjustment (entry via assistant/wizard)

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Also see Editing Main Menu Adjust, page 61

5.3.4.1. n-point adjustment

1. Connect precision pressure sensor (see n-point adjustment,
page 46).

2. Mark the instrument file of the connected instrument.

3. Click on [Adjusting the transmitter].

- The Properties of <Instrument type> <Serial number>
dialogue is opened with the Adjusting the transmitter register.

4. Mark n-point adjustment.

5. Click on [Start wizard …] and follow the instructions of the
wizard.

- The adjustment is performed when the wizard is closed.

Field Explanation

91

5 Parameterizing, adjusting and analyzing software (P2A software)

Field Explanation

How much pressure
is actually applied

Required field: Entry of the value read off at
the pressure sensor.

The n-point adjustment must always be carried out to its full
extent and in good time at all selected adjustment points.

The number of adjustment points (3 to 6) is stored in the
user menu of the transmitter and can only be changed via

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the P2A software.

5.3.4.2. Adjusting the analog output

1. Connect precision multimeter (see Analog output adjustment,
page 45).

2. Mark the instrument file of the connected instrument.

3. Click on [Adjusting the transmitter].

- The Properties of <Instrument type> <Serial number>
dialogue is opened with the Adjusting the transmitter register.

4. Click on [Start wizard …] and follow the instructions of the
wizard.

- The adjustment is performed when the wizard is closed.

Field Explanation

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5 Parameterizing, adjusting and analyzing software (P2A software)

Field Explanation

Default value The analog output value from the last

performed adjustment is given at the output.
Value of the factory adjustment:

• Lower adjustment point: approx. 10 % of
the max. value

• Centre adjustment point: approx. 50 % of
the max. value

• Upper adjustment point: approx. 90 % of
the max. value

Measured analog
value

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5.3.5. Transmitter history

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Required field: Entry of the value read off at
the multimeter.

Parameterizations, adjustment processes and messages that have
occurred are registered in the transmitter with an operating hours
stamp.

In the history overviews (explained later in more detail), past
processes and events can be made visible.

For parameter changes or adjustments that are performed
directly at the instrument (via the user menu), "Transmitter"
is entered in the User field and only the operating hour is
entered in the Date/time field instead of operating
hour/date/time.

For entries that are performed using the P2A software, the
name of the user logged into Windows appears in the User
field, while the date/time and operating hour are shown in
the Date/time field.

1. Mark the instrument file of the connected instrument.

2. Click on the [Transmitter history] button.

- The Properties of <Instrument type> <Serial number>
dialogue is opened with the Transmitter history register.

3. Click on the required entry in the list to change the display.

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5 Parameterizing, adjusting and analyzing software (P2A software)

Field Explanation

Operating hours /
date/time

Operating hour/time stamp at which the
change at the instrument was performed.

User Name with which the user is logged into the

operating system.
"Transmitter" entry if the change was

performed at the instrument.

Comments Type of parameter change, e.g. "Unit of

channel 1 from Pa to bar".

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5 Parameterizing, adjusting and analyzing software (P2A software)

Field Explanation

Selection: Analog adjustments.

Operating hours /
date/time

Operating hour/time stamp at which the
change at the instrument was performed.

User Name with which the user is logged into the

operating system.
"Transmitter" entry if the change was

performed at the instrument.

Unit Unit during the adjustment.

Channel Analog adjustment: Channel 1 to n.

Specification Analog adjustment: Actual value.

Pressure
specification

n-point adjustment: Reference value set at
the pressure sensor.

Multimeter Analog adjustment: Reference value set at

the multimeter.

Offset Analog adjustment: Deviation at time of

adjustment.

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5 Parameterizing, adjusting and analyzing software (P2A software)

Field Explanation

The table is shown only for error and status messages that were
generated in the transmitter and were transferred and saved there
via the connection to the P2A software.

Operating hour Operating hour at which the message

appeared in the instrument.

Message e.g. "Watchdog error". Due to a processor

error, the transmitter performs an automatic
restart.

Type of message e.g. early warning, status message.

> To print out the history data, click on [Print].

The printing job is automatically sent to the default printer
for the operating system.

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4. Click on [OK] or [Cancel] to close the dialogue.

The printout can be edited using [Set up printer …].

96

6 Tips and assistance

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6.1. Questions and answers

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Question Possible causes/solution

Connection to instrument

Check connection cable/plug contacts

cannot be established
A message appears on the

display
Malfunction (with and

without display)

See Status, warning and error
messages, page 63

Analysis using the P2A software, see
Analyzing/testing the transmitter, page
86

When does a stable

After approx. 20 seconds

current reading appear?

If we could not answer your question, please contact your dealer or
Testo Customer Service. For contact details see the rear side of

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6.2. Accessories and spare parts

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this document or the web page www.testo.com/service-contact

Description Article no.
Ethernet

Ethernet module 0554 6656
Ethernet connector 0554 6653
Interface and software
P2A software (parameterizing, adjusting,

analyzing) incl. USB adapter
Plug-in connections
Set of M12 plug-in connections (connector

and socket) for power and signal lines
Hoses
Silicone hose ID 4 transparent 0086 0001, sold by

TYGON hose ID 4.8 transparent 0086 0031, sold by

6 Tips and assistance

0554 6020

0554 6682

the metre

the metre

97

6 Tips and assistance

Description Article no.
Pitot tubes

Pitot tube, length 350 mm, stainless steel 0635 2145
Pitot tube, length 1000 mm, stainless steel 0635 2345
Supply
Mains unit (desktop, wall-mounted) 0554 1748
Mains unit (top-hat rail mounting) 0554 1749
External display

Process display for testo 54-2 AC.... 5400 7553

Process display for testo 54-7 AC.... 5400 7555

Calibration
Standard ISO calibration certificate,

transmitter only
Standard DKD calibration certificate,

transmitter only

For a complete list of all accessories and spare parts, please refer
to the product catalogues and brochures or look up our website at:

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www.testo.com

0520 1000

0520 1200

6.2.1. Ordering options for 6381 transmitter (0555 6381)

Order code Characteristic
Axx Measuring range

A01 0 to 50 Pa
A02 0 to 50 Pa
A03 0 to 100 Pa
A04 0 to 500 Pa
A05 0 to 10 hPa
A07 0 to 50 hPa
A08 0 to 100 hPa
A09 0 to 500 hPa
A10 0 to 1000 hPa
A21 -10 to 10 Pa
A22 -50 to 50 Pa

98

6 Tips and assistance

Order code Characteristic

A23 -100 to 100 Pa
A24 -500 to 500 Pa
A25 -10 to 10 hPa
A27 -50 to 50 hPa
A28 -100 to 100 hPa
A29 -500 to 500 hPa
A30 -1000 to 1000 hPa

Bxx Analog
output/supply

B02 0 to 1 V (4-wire, 24 V AC/DC)
B03 0 to 5 V (4-wire, 24 V AC/DC)
B04 0 to 10 V (4-wire, 24 V AC/DC)
B05 0 to 20 mA (4-wire, 24 V AC/DC)
B06 4 to 20 mA (4-wire, 24 V AC/DC)
Cxx Display
C00 Without display
C02 With display/English
C03 With display/German
C04 With display/French
C05 With display/Spanish
C06 With display/Italian
C07 With display/Japanese
C08 With display/Swedish
Dxx Cable entry
D01 M16 cable entry (relay: M20)
D02 Cable entry NPT 1/2"
D03 Cable contacting via M plug-in

connection for signal and supply

Exx Ethernet
E00 Without Ethernet module

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6 Tips and assistance

Order code Characteristic

E01 With Ethernet module

Fxx Differential
pressure unit

F01 Pa/Min/Max
F02 hPa/Min/Max
F03 kPa/Min/Max
F04 mbar/Min/Max
F05 bar/Min/Max
F06 mmH2O /Min/Max
F07 inchH2O /Min/Max
F08 inch HG/Min/Max
F09 kg/cm2 /Min/Max
F10 PSI/Min/Max
F11 m/s /Min/Max
F12 ft/min /Min/Max
F13 m3/h /Min/Max
F14 l/min /Min/Max
F15 Nm3/min /Min/Max
F16 Nl/min /Min/Max

Gxx Optional analog
output for humidity
probe connection testo
6610/units

G00 Without connection option for testo

G01 % RH/Min/Max
G02 °C/Min/Max
G03 °F/Min/Max
G04 °Ctd/Min/Max
G05 °Ftd/Min/Max
G06 g/kg /Min/Max

10

6610 humidity probe

10

Scaling 10 to 100 % of measuring range is possible, but at least 10 Pa

100