TESTO 6610 Instruction Manual

testo 6383 · differential pressure transmitter

testo 6610 · Probes
P2A software · Parameterizing, adjusting and analyzing

software

Instruction manual Volume 1

2

1 Safety and the environment

3

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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 authorize d

personnel.

> Only have the transmitter wired and connected by authorized

personnel with the voltage disconnected.

> You must always comply with the regulations applicable in your

country for opening and repairing electrical equipm ent.

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Avoiding personal injury and damage to equipment

> Installation, setting and calibration work must only be carried

out by qualified and authorized personnel!

> Only open the instrument when this is expressly described in

the instruction manual for installation, maintenance or repair
purposes.

> Observe the permissible storage, transport and operating

temperature.

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

desiccants.

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

as operating or servicing the transmitter.

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

within the parameters specified in the technical data. Do not
use any force.

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> Carry out only the maintenance and repair work on this

instrument that is described in the documentation. Follow the
prescribed steps exactly. Use only original spare parts from
Testo.

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Any additional work must only be carried out by authorized
personnel. Otherwise testo will not accept any responsibility for the
proper functioning of the instrument after repair and for the validity
of certifications.

2 About this document

4

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Protecting the environment

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

collection for electric and electronic devices (observe local
regulations) or return the product to Testo for disposal.

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2 About this document

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Use

> Please read this documentation through carefully and

familiarize yourself with the product before putting it to use. Pay
particular attention to the safety instructions and warning advice
in order to prevent injuries and damage to the products.

> Keep this document to hand so that you can refer to it when

necessary.

> Hand this documentation on to any subsequent users of the

product.

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WARNING

Indicates potential serious injuries

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CAUTION

indicates potential minor injuries

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Symbols and writing standards
Representa-

tion

Explanation

Note: Basic or further information.

1. ...

2. ...

Action: more steps, the sequence must be
followed.

> ... Action: a step or an optional step.

- ... Result of an action.

Menu

Elements of the program interface.

[OK]

Buttons of the program interface.
... | ... Functions/paths within a menu.
“...” Example entries

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3 Contents

5

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3 Contents

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

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

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

4 Transmitter...............................................................................................7

4.1. Specifications ..................................................................................7

4.1.1. Functions and use ...........................................................................................7

4.1.2. Scope of delivery .............................................................................................7

4.1.3. Accessories .....................................................................................................7

4.1.4. Technical data .................................................................................................8

4.1.5. Dimensions....................................................................................................12

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

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

4.2.2. Usable probes................................................................................................14

4.2.3. Display and keypad........................................................................................15

4.2.4. Service interface............................................................................................15

4.2.5. Relay board (option) ......................................................................................15

4.2.6. Analog outputs...............................................................................................16

4.2.7. Parameters....................................................................................................16

4.2.8. Scaling .........................................................................................................17

4.2.9. Alarm handling...............................................................................................19

4.3. Commissioning..............................................................................20

4.3.1. Mounting preparations ...................................................................................20

4.3.2. Connecting the instrument.............................................................................21

4.3.2.1. Overview of terminals........................................................................22

4.3.2.2. Connecting voltage supply and analog outputs.................................23

4.3.2.3. Connecting the relay outputs ............................................................24

4.3.2.4. Closing the instrument......................................................................27

4.3.2.5. Adjusting the instrument....................................................................29

4.3.2.6. Overview: Adjustment keys and test contacts...................................30

4.3.2.7. 1-point adjustment (offset - humidity/temperature)............................30

4.3.2.8. Analog output adjustment .................................................................32

4.3.2.9. n-point adjustment (pressure)...........................................................33

4.3.2.10. High-humidity adjustment for testo 6614....................................34

4.3.2.11. Self adjustment of testo 6615 trace humidity probe....................35

4.4. Operation.......................................................................................36

4.4.1. Relationship between user menu and mini-DIN socket is active....................36

4.4.2. Password protection ......................................................................................36

4.4.3. Structure of user menu ..................................................................................37

4.4.4. Overview of the testo 6383 user menu...........................................................38

4.4.5. The individual main menus ............................................................................41

4.4.5.1. Editing main menu of channel 1........................................................41

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6

4.4.5.2. Editing Main Menu Channel 2 (if this option is available)..................41

4.4.5.3. Editing Main Menu Channel 3 (if this option is available)..................42

4.4.5.4. Editing Main Menu Alarm..................................................................42

4.4.5.5. Editing Main Menu Settings..............................................................44

4.4.5.6. Editing Main Menu Analysis..............................................................47

4.4.5.7. Editing Message main menu.............................................................49

4.4.5.8. Calling up Main Menu Ident..............................................................50

4.4.5.9. Editing Main Menu Adjust.................................................................50

4.4.5.10. Editing Reset main menu...........................................................52

4.5. Status, warning and error messages ............................................53

4.5.1. Status messages...........................................................................................54

4.5.2. Warning messages........................................................................................55

4.5.3. Transmitter error messages ...........................................................................56

4.5.4. Handling alarm messages .............................................................................58

4.5.5. Namur fault conditions...................................................................................59

4.6. Maintenance and cleaning............................................................ 61

4.6.1. Maintaining the instrument.............................................................................61

4.6.2. Cleaning the instrument.................................................................................61

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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 6383 transmitter is suitable for the following applications,
amongst others:

• Clean rooms

• Complex room climate applications

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4.1.2. Scope of delivery

The scope of delivery of the testo 6383 transmitter includes the
following:

• With KMAT version D04: Integrated humidity probe

• Sealing frame

• 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
separately).

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4.1.3. Accessories

The following accessories are available for the testo 6383
transmitter, amongst others:

• Protection caps for probes

• Mains unit

• P2A software (parameterizing, adjusting and analyzing
software)

• Assembly accessories

Information about accessories and their order numbers can
be found in volume 2, Accessories and spare parts or on
the website at www.testo.com.

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4.1.4. Technical data

Parameters

• Differential pressure

• Temperature

• Humidity

Differential pressure accuracy

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

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

• T

K slope drift

= 0.02 % of measuring range per degree Kelvin of

deviation from nominal temperature 22 °C

• T

K zero point drift

= 0 %, as zeroing with solenoid valve2

Humidity and temperature accuracy

• Depends on probe

Humidity and temperature measuring range

• Depends on probe

1

Measuring uncertainty in accordance with GUM: ±0.5 % of measuring range

final value ±0.3 Pa.

GUM (Guide to the Expression of Uncertainty in Measurement): ISO guideline for determining the
measuring uncertainty in order to render global measurement results comparable.

The following uncertainties are used during the inquiry:

• Hysteresis

• Linearity

• Reproducibility

• Adjustment area/factory calibration

• Test location

2

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

side due to the automatic zeroing cycle.

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Pressure measuring range, resolution and overload of
differential pressure

Pressure
measuring range
depending on
version ordered

Resolution Overload

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

-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

Upon delivery and following a factory reset the readings are
shown in the display in the unit that was ordered via the
KMAT option Fxx, see Ordering options for testo 6383
transmitter (0555 6383), page 133.

Humidity and temperature resolution

• 0.1 % RH or 0.01 °C/0.01 °F

Meas. cycle

• 1/sec

Interface

• Mini-DIN for P2A software (parameterizing and adjusting
software) and handheld testo 400/650

• optional: Ethernet interface

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)

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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)

Display

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

Operating temperature

• -5 to 50 °C/23 to 122 °F

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Storage temperature

• -20 to 60 °C/-4 to 140 °F

Process temperature

• -20 to 65 °C/-4 to 149 °F

Oper. humidity

• 0 to 90 % RH

Housing, weight

• Metal/plastic

• Version with integrated humidity probe: approx. 1.35 kg

• Version with preparation for external humidity probe: approx.

1.26 kg

Protection class, frontal

• IP 65 only if the transmitter is wired and/or sealing plugs are
inserted

Directives, standards and tests

• EC Directive: 2004/108/EC

Warranty

• Duration: 2 years

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

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4.1.5. Dimensions

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4.2. Product description

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4.2.1. At a glance

1 Sealing plugs on the positive

pressure test connection

2 Sealing plugs on the

negative pressure test

connection
3 Socket for service plug
4 Display (optional)
5 Keys (only with optional

display)
6 Test rods for the analog

outputs
7 Service cover screw

connection (self-locking,

2 pcs.)
8 Openings for screws for

fastening to the wall
9 Only with integrated humidity

probe (KMAT option D04):

Opening for the integrated

humidity probe

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10 9-pin connector for the

current/voltage supply

11 Covered Ethernet interface

(non-functional)

12 Relay cover with 12-pin

connector underneath for
relay connection (option)

13 Negative pressure

connection

14 Positive pressure connection

15 Probe socket

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4.2.2. Usable probes

The testo 6383 transmitter can be used with the following probes:

Probes Article no. Characteristic

Integrated
humidity
probe

KMAT option
D04

Wall probe version; accuracy to ±1 % RH;
temperature range -20 to +70 °C/-4 to +158 °F,
plug-on sensor

testo 6612 0555 6610-L12

Duct probe version; accuracy to ±1 % RH;
temperature range -30 to +150 °C/

-22 to +302 °F, sensor soldered

testo 6613 0555 6610-L13

Cable probe version; accuracy to ±1 % RH;
temperature range -40 to +180 °C/

-40 to +356 °F, sensor soldered

testo 6614 0555 6610-L14

Heated cable probe version; accuracy to ±1.0 %
RH; temperature range -40 to +180 °C/

-40 to +356 °F, sensor soldered

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Probes Article no. Characteristic

testo 6615 0555 6610-L15

Trace humidity cable probe version; accuracy
±1 K at 0 °Ctd/+32 °Ftd; temperature range

-40 to 120 °C/-40 to +248 °F, sensor soldered

testo 6617 0555 6610-L17

Cable with cover electrode monitoring probe
version; accuracy to ± 1.2 % RH; temperature
range -40 to 180 °C/

-40 to +356 °F, sensor soldered

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4.2.3. Display and keypad

The display option allows operation of the testo 6383 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 backgrou nd
lighting (permanent or off) can be changed via the user menu or the
P2A software.

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4.2.4. Service interface

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The parameterizing socket (mini-DIN) is located behind the service
flap as an interface to the P2A software or Testo handheld
instrument (testo 400/testo 650).

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4.2.5. 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

• 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.

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4.2.6. Analog outputs

As analog outputs, the testo 6383 has either

• 1 or optionally 3 current outputs of 0 to 20 mA (4-wire)/4 to

20 mA (4-wire) or

• 1 or optionally 3 voltage outputs of 0 to 1 V/0 to 5 V/0 to 10 V

(4-wire).

The transmitter can be ordered with three analog outputs as an
option.

The optional three channels are galvanically isolated.

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4.2.7. Parameters

The following parameters are displayed

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

2

O, inch

H

2

O, inch HG, kg/cm2, PSI

• Relative humidity in % RH (technical)

• Relative humidity in % WMO* (calculation according to the

WMO standard)

• Degree of humidity in g/kg and gr/lb

• Absolute humidity in g/m³ and gr/ft³

• Water content in ppm (vol) and % vol

• Psychrometer temperature in °C

tw

and °Ftw

• Enthalpy in kJ/kg and BTU/lb

• Water vapour partial pressure in hPa and inch H

2

O

• Dewpoint temperature in °C

td

and °Ftd

• Standardized dewpoint in °C

tdA ,

standardized at atmospheric

pressure (1013 hPa); precondition: Absolute process pressure.

• Dewpoint of H

2O2

mixture in °Ctm and °Ftm.

* It is possible that condensation appears as of a displayed

humidity starting from 70 % and is shown on the display. This
unit is used in meteorology, amongst others. When calculating
the relative humidity the Magnus coefficient with undercooled
water is used in accordance with WMO.

Calculated humidity variables correspond to the medium of
air. With other gases/gas compositions, deviations may
occur, e.g. with the enthalpy.

• Temperature °C and °F

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4.2.8. 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 un it, 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 rang e, e.g.

for the adjustment of the scaling limits to standard values of

a PLC.
With the alarm definition, however, the physical measuring

range limits are decisive.

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Measuring
range/standard scaling

Maximum scaling

0 to 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

-10 to 10 Pa -20 to 20 Pa

-50 to 50 Pa -100 to 100 Pa

-100 to 100 Pa -200 to 200 Pa

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Measuring
range/standard scaling

Maximum scaling

0 to 50 Pa -5 to 15 Pa

-500 to 500 Pa -1000 to 1000

-10 to 10 hPa -20 to 20 hPa

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Physical
measuring range
at 1013 hPa

Standard scaling of
transmitter
measuring range

Parameter Unit Probes

MIN MAX MIN MAX
°C 6611 -20 +70 -20 +70
°F 6611 -4 +158 -4 +158
°C

6613,
6614,
6617

-40 +180 -40 +180

°F

6613,
6614,
6617

-40 +356 -40 +356

°C 6615 -40 +120 -40 +120

Temperature

°F 6615 -40 +248 -40 +248
°Ctd 6611 -20 +70 -80 +100
°Ftd 6611 -4 +158 -112 +212
°Ctd

6613,
6614,
6617

-20 +100 -80 +100

°Ftd

6613,
6614,
6617

-4 +212 -112 +212

°Ctd 6615 -60 +30 -80 +100

Dewpoint

°F

td

6615 -76 +86 -112 +212

g/m3

all
probes

0 600 0 2000

Absolute
humidity

gr/ft

3

all
probes

0 250 0 800

relative humidity % RH

all
probes

0 100 0 100

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Physical
measuring range
at 1013 hPa

Standard scaling of
transmitter
measuring range

WMO relative
humidity

% RH 0 100 0 100

°Ctm -20 +100 -20 +100

Mixture dewpoint
(H

2O2

)

°F

tm

-4 +212 -4 +212

g/kg

all
probes

0 13300 0 9500

Degree of
humidity

gr/lb

all
probes

0 93000 0 66500

kJ/kg -40 99999 -40 8000 Enthalpy
BTU/lb -18 43000 -18 3500
°Ctw -40 100 -40 180

Psychrometer
temperature

°Ftw -58 210 -40 356
ppm

(vol)
H

2

O

0 99999 0 99999 Water content

% vol 0 100 0 100
hPa 0 1000 0 7000

Water vapour
partial pressure

inchH2O 0 400 0 2800

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4.2.9. 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 6383 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.

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 53

If multiple alarm messages are activated at the same time,
the last alarm is shown. If the alarm is cancelled again, the
previous messages are no longer shown.

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4.3. Commissioning

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4.3.1. Mounting preparations

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1. Create a wall opening (approx. 120 mm x 220 mm) at the
mounting location.

2. Hold 6383 in assembly position and mark the drill holes.

3. Drill holes suitable for the screws to be used.

4. Connect 6383.

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4.3.2. Connecting the instrument

WARNING

Electrical voltage
Danger of injury!

> De-energize the mains connection before connecting the

transmitter.

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

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4.3.2.1. Overview of terminals

1 Terminal strip for voltage

supply and analog outputs

3 Relay cover (option)

2 Relay terminal strip (option),

below the relay cover

4 Insulating trough for relay

board (option), below the
relay cover

The following description of the terminals refer to this
overview and its numbering.

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4.3.2.2. Connecting voltage supply and analog outputs

Terminal strip for voltage
supply and analog outputs,
item (1) of 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 1 or 3 channels,

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

2 Functional earth

Requirement for the connecting cable of the supply:

• Shielded and insulated with cross-section of at least

0.25 sq. mm, maximum 1.5 sq. mm without wire end sleeves.

• T he supply line must be secured against exceeding

0.5 A.

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

1. Disconnect terminal strip for voltage supply and analog outputs.

2. Strip the cable ends, clamp wire end ferrules on and screw
down with voltage terminals/channel terminals.

3. Tie together each of the two adjacent cores using a cable tie.

4. Attach terminal strip for voltage supply and analog outputs.

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4.3.2.3. Connecting the relay outputs

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

Relay terminal strip,
item (2) of overview of
terminals

There is the option of twelve terminals for a total of four relays.

1. Remove relay cover.

2. Disconnect relay terminal strip.

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

4. Connect relays according to chosen function (NC/NO) (see

diagrams below; relay 1 is shown as an example of a
connection).

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 relay trough (1).

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25

• It is recommended that you always tie 2 adjacent cores
to one another using a cable tie (3).

• T he insulation of the cable must be fed at least 5 mm
(4) into the relay tray up to the elevated part.

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

1 Alarm/status light

(example of installation)

2 250 V AC/DC, 3 A

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.

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

1 Alarm/status light

(example of installation)

2 250 V AC/DC, 3 A

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. Insert relay terminal strip into socket.

6. Set on relay cover.

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4.3.2.4. Closing the instrument

1. Connect probe.

• Version with int egrated humidity probe:

1. Insert probe into probe socket.

2. Guide probe through opening of front plate.

3. Tighten screw at opening.

• Version with external h umid ity probe:
> Insert probe into probe socket.

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4. Pull sealing frame (1) over the edge of the 6383.

5. Screw on 6383. Initially, only tighten the screws slightly. When
all screws are in position, also align 6383 and tighten the
screws.

6. Seal 6383 using a measure appropriate for the installation point
(e.g. with a silicone strip).

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4.3.2.5. Adjusting the instrument

The testo adjusting concept allows the entire signal chain from the
sensor signal (probe) and the digital signal (within the transmitter)
through to the analog signal (transmitter output signal) to be
adjusted (see diagram).

1-point adjustment

Adjustment via

• testo 400/650
handheld instrument
with adjustment
adapter

• P2A software

• User menu

Analog adjustment n-point adjustment

Adjustment using a
precise multimeter and
transmission of analog
reference value in

• User menu or

• P2A software

Adjustment using a
precise pressure sensor
and transmission of
analog reference value in

• User menu or

• P2A software

The 1-point adjustment is suitable for adjusting the sensor signal ­digital signal chain.

The testo 6383 transmitter has digital probes whose adjustment
information is stored in the probes' internal memory. The 1-point
adjustment can thus be carried out on another testo 6383 (e.g. in
the calibration laboratory).

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4.3.2.6. Overview: Adjustment keys and test contacts

1 Contact ch. 1

2. Contact ch. 2

3. Contact ch. 3

4. Service interface

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4.3.2.7. 1-point adjustment (offset - humidity/temperature)

In the 1-point adjustment, the reading at the working point is raised
to the reference value so that there is no longer any deviation in the
working point. The reference condition can be measured using a
precise handheld instrument (e.g. testo 400/650 with precision
humidity probe) or be created in an air conditioning cabinet.

1 Deviation
2 Working point
3 Working range

The advantage of the 1-point adjustment is the good measuring
result in the working range. But the further away the measurement
is from the working point, the greater the deviation can become.
The 1-point adjustment should therefore only be used for a

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relatively narrow measuring range (working range), e.g. clean room
applications, air conditioning applications for storage and similar.

The 1-point adjustment can be performed

• via the user menu (see Editin g Main Menu Adjust, page 50) or

• via the P2A software (see volume 2, 1-point adjustment, page

122) or

• directly by means of a T esto handhel d instrument
(testo 400/650) (see description of how to proceed below).

Please note that the 1-point adjustment is generally performed on
the basis of the % RH and °C/°F parameters.

Adjusting testo 6383 using testo handheld instrument

✓ The service flap is open, a testo 400/650 handheld instrument

with a precision humidity probe is ready.

1. Connect testo handheld instrument 400/650 (1) with connected
humidity reference probe (3) (order no. reference set
0699 3656/20) to the service interface (5) of the testo 6383 via
the adjustment adapter (2) (connected to probe socket 1 of the
handheld instrument).

2. Expose the humidity probe (4) of the testo 6383 and the
reference probe (3) to the same reference conditions (e.g. in
the humidity generator) and allow climatic conditions to
equalize.

3. Switch on the testo 400/650. The two-part display of the
handheld instrument will show the values of the transmitter on
the left, and the values of the reference probe on the right. The
humidity and temperature values are adjusted to the reference
probe using the Probe > Probe Adjustment menu item on the

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testo 400/650. The 1-point adjustment is performed for both the
humidity and the temperature.

4. Disconnect the adjustment adapter (2) from the service

interface (5).

5. Close the service flap.

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Adjustment with the standard testo adjustment salt pots is
not suitable for the testo 6614 (heated for high-humidity
applications) and testo 6615 (trace humidity) probes.

The reference conditions should be generated in a humidity
generator to adjust these probes. In addition, these probes
can also be adjusted at a third adjustment point by Testo
Service.

• testo 6614: third adjustment point at 90 % RH

• testo 6615: third adjustment point at -40 °Ctd/-40 °Ftd

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4.3.2.8. Analog output adjustment

The purpose of adjusting the analog outputs is to adjust the signa l
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.).

1 Contact ch. 1

2. Contact ch. 2

3. Contact ch. 3

4. Service interface

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33

Adjusting analog outputs 1, 2 and 3 (optional)

✓ With testo 6383 with current output: Load of max. 500 Ω is

connected to channel that is to be adjusted (see Connecting
voltage supply and analog outputs, page 23)

✓ A precise multi meter (minimum requirement: resolution 6.5

digits, at least 5-times more accurate than the 6383) is
available.

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

✓ The service cover is open.

1. Connect the inputs of the multimeter with the contacts (1) and
(2) for channel 1 or with contacts (3) and (4) for channel 2, (5)
and (6) for channel 3.

2. Transfer the reference analog value measured with the
multimeter into the P2A software (see volume 2, Adjusting the
analog output, page 125) or enter it via the user menu (see
Editing Main Menu Adjust, page 50).

3. Disconnect connections between the multimeter and the
contacts of the testo 6383 and close the service cover.

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4.3.2.9. n-point adjustment (pressure)

With an n-point adjustment, the parameters at the 3-6
measurement points are adjusted to the reference value. T he
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

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 124)

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

✓ A precise pr essure 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 volume 2, n-point
adjustment, page 124) or enter it via the user menu (see Editing
Main Menu Adjust, page 50).

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

4. Disconnect connections between the pressure sensor and the

pressure connections of the testo 6383.

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4.3.2.10. High-humidity adjustment for testo 6614

With the testo 6614, the rear of the Testo humidity sensor is
heated, creating a microclimate around the sensor (within the filter)
that is constantly 5 K warmer than the actual process conditions.

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As can be seen in the Mollier diagram, this reduces the relative
humidity at the sensor from around 100 % RH to a lower value, e.g.
73 % RH. In this range, the reaction time of the sensor is noticeably
shorter than in the condensation range and the risk of the sensor
corroding is also reduced. Using the separate temperature probe,
the testo 6383 transmitter compensates the microclimate conditions
and displays the process readings.

The reference conditions (11.3 % RH and 75.3 % RH) for
the 2-point adjustment of the testo 6614 should be
generated in a humidity generator, as humid ity adjustment
sets cannot be used due to the heat generated.

The adjustment can also be carried out at a third
adjustment point (90 % RH) by Testo Service so that
optimum accuracy is also achieved in the high humidity
ranges.

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4.3.2.11. Self adjustment of testo 6615 trace humidity probe

Conventional trace humidity probes show a steep rise in measuring
uncertainty at low humidities. In the testo 6615 trace humidity
probe, these measuring uncertainties are corrected by means of an
automatic self-adjustment process. This means that extremely
accurate measuring results are also attained to -60 °Ctd.

To this end, a temperature sensor is fitted on the back of the
testo 6615 which is used as a heater. A humidity and temperature
value pair is taken in both the unheated and heated state. The
deviation of the probe obtained from these pairs of values is
automatically corrected.

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The heating time and storing of cycles can be edited in the P2A
software; for example, they can be deactivated by setting the two
parameters to "0".

• Deactivating th e adjustment function of the testo 6615
will reduce measuring accuracy and should therefore be
restricted to the shortest possible length of time.

• During the heating phase, the relay and analog outputs,
the display value and output value are "frozen", see
diagram above. Self-adjustment active is shown in the
display until it has finished. The factory setting for self­adjustment time (incl. heating time, calculation time,
cooling time) requires 30 minutes daily.

• In the factory setting, a third adjustment point
(-40 °Ctd) is approached for the testo 6615 in addition
to the 2-point adjustment. This special adjustment can
be performed again by your Testo Service team if
necessary.

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4.4. Operation

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

The testo 6383 can be parameterized using either the user menu or
the P2A software (see volume 2, Parameterizing, adjusting and
analyzing software (P2A software) page 101).

The testo 6383 transmitter can only be operated via the
display and keypad if the display option is available.

If the testo 6383 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

6383. As soon as the P2A software is disconnected, the
user menu is accessible again.

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4.4.2. Password protection

The user menu can be protected with a four-digit numerical code
(see Editing Main Menu Settings, page 44) 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
"0000" must be entered. This is also the status upon delivery.

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4.4.3. Structure of user menu

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

• Main Menu Channel 1

• Main menu of channel 2 (if this option is available)

• Main menu of channel 3 (if this option is available)

• Main Menu Alarm

• Main Menu Settings

• Main Menu Analysis

• Main Menu Messages

• Main Menu Ident

• Main Menu Adjust

• Main Menu Reset
1 Channel 1 display

2 Channel 2 display
3 Channel 3 display or 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: chang es to ne xt digit (to the right)

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Key Function/description

S • Selecting: scrolls through menus (upwards)

or selectable alternatives

• Editing: increa ses t he value of the current

digit by 1

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4.4.4. Overview of the testo 6383 user menu

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4.4.5. The individual main menus

4.4.5.1. Editing main menu of channel 1

An overview is given in Overview of the testo 6383 user menu,
page 38).

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
Mode with ESC.

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4.4.5.2. Editing Main Menu Channel 2 (if this option is available)

See channel 1.

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4.4.5.3. Editing Main Menu Channel 3 (if this option is available)

See channel 1.

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4.4.5.4. 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).

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 select ion with SET.

- F our alarms can be parameterized.

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

Using alarm to monitor limit values

NO contact

Monitoring minimum Monitoring maximum

Hysteresis

Hysteresis

Limit value Limit value

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NC contact

Monitoring minimum Monitoring maximum

Hysteresis

Hysteresis

Limit value Limit value

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 wit h X or
S. Confirm with SET or abort entry with ESC.

7. Press SET and edit Alarm delay: Scroll one digit to the right
using X and increase value of digit by 1 using S (0 to 240
seconds possible). Confirm with SET or abort entry with ESC.

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
in the same

wa

y.

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 6383
transmitter (or the connected testo 6610 probe) becomes active.

The messages affecting the collective alarm can only be
selected in the P2A software, see volume 2, Using the
software, page 104

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

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

Collective alarm or not used. Confirm selection with SET.

2. If collective alarm is selected: Select Visual alarm with X or S.
Select YES or NO with X or S. Confirm with SET and return to

Alarm x.

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

the same way.

4. Return to Main Menu Alarm with ESC.

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

Measuring Mode with ESC.

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4.4.5.5. 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

◦ Absolute pressure
◦ Area
◦ Temperature

• Humidity process data

◦ H2O2 percentage by weight
◦ Humidity process pressure

Editing display settings

You can set the brightness and contrast of the display.

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

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

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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 o n
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 useX or S to
continue to Language.

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.

Only choose a language that you can understand well.

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 and useX or S to continue to

Change parameters.

Select unit (Change unit)

This setting affects the displayed unit of all readings.

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.

4 Transmitter

46

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.

6. Return to Change parameters with ESC.

7. Return to Main Menu Settings with ESC.

Editing Humidity process data

This menu is only used to parameterize humidity measurem ents in
H

2O2

atmospheres (e.g. in sterilization processes) and determines

whether °Ctm or °Ftm is the output parameter.

1. Select Humidity process data with X or S and confirm

selection with SET.

2. Select H202 weight prop. with X or S, confirm selection with

SET or cancel with ESC.

The selection H

2O2

water or H2O2 vapour in the submenu

describes whether H2O2 is generated by means of evaporation
or is actively vaporized in the process.

3. Select H

2O2

water or H2O2 vapour with X or S and confirm

with SET.

4. Edit proportion by weight of the H

2O2

in % (% H2O2 proportion
by weight in the liquid initial solution): 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.

5. Return to H202 weight prop. with ESC and useX or S to
continue to Humidity process pressure.

6. Select Humidity process pressure with X or S and confirm
selection with SET.

7. Edit humidity process pressure: 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.

8. Return to Change parameters with ESC.

9. Return to Main Menu Settings with ESC.

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4.4.5.6. Editing Main Menu Analysis

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

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 select ion with SET.

- Test Analog Output is shown.

2. Press SET and choose between Analog output 1, 2, 3 with X
or S.

3. 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.

4. Accept setting by pressing SET and test with multimeter
(minimum requirement: resolution 6.5 digits, at least 2-times
more accurate than the 6383) as follows:

Analog output 1, 2 or 3: Via test contacts under service cover,
see diagram.

1 Positive test

contact
channel 1

2 Negative test

contact
channel 1

3 Multimeter

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

4 Transmitter

48

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 24) 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
52

1. Read off the min./max. values of the three channels 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.

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49

4.4.5.7. 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.

1 Operating hours at the

time of message

2 Message code (see

Status, warning and error

messages, page 53).
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)

Using the P2A software (see volume 2, Parameterizing,
adjusting and analyzing software (P2A software), page 101 )
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 select ion 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.

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50

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,
warning and error messages, page 53

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4.4.5.8. Calling up Main Menu Ident

1 Instrument or

probe type
2 Build number
3 Firmware

version
4 Serial number

The serial numbers of the transmitter and probe can be read off.

1. In the Measuring Mode press SET, select Main Menu Ident
with X or S and confirm select ion 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 or read off the type,
firmware release, build number and serial number of the probe
with X or S and then return to Main Menu Ident with X or S.

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

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4.4.5.9. Editing Main Menu Adjust

A reference value can be entered for both relative humidity (RH)
and temperature (°C/°F) for the 1-point adjustment. Please refer to
the description in 1-point adjustment (offset ­humidity/temperature), page 30

Reference values for pressure can be entered for the n-point
adjustment. Please refer to the description in n-point adjustment
(pressure), page 33

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51

In addition, the analog outputs can be adjusted. Also see Analog
output adjustment, page 32 for instructions on how to do this.

Enter reference value for 1-point adjustment

Please also refer to 1-point adjustment (offset ­humidity/temperature), page 30

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

- Reference value % RH is displayed.

2. Press SET, edit 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.

3. Continue to Reference value temp with X or S.

4. Press SET, Reference value °C or Reference value °F is
displayed.

5. Press SET, edit 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.

6. Continue to Analog Adj. Ch. 1 with X or S.

7. Continue with the adjustment of the analog outputs (see belo w,
step 2) or press ESC to return to main menu Adjust.

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

Performing analog adjustment

Please refer to Analog output adjustment, page 32.

1. In the Measuring Mode press SET, select main menu Adjust
with X or S and confirm select ion 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. Press SET. Read off multimeter display (e.g. 5601 mA) 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 (e.g. 12,001 mA) and
enter this value in the user menu. Do this by scrolling one digit

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52

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 (e.g. 18,401 mA) 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. With X or S continue to Analog Adj. Ch. 2or 3 (repeat steps 3

to 8).

10. Return to main menu Adjust with ESC.

11. Continue to main menu Reset with X or S or return to

Measuring Mode with ESC.

Performing the pressure adjustment

Please refer to n-point adjustment (pressure), page 33.

1. In the Measuring Mode press SET, select main menu Adjust

with X or S and confirm select ion 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 (e.g. 30.1 Pa) 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.

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4.4.5.10. Editing Reset main menu

You can reset the factory settings for the following:

• Instrument

• Sensor/probe

• 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.

4 Transmitter

53

1. In the Measuring Mode press SET, select Main Menu Reset
with X or S and confirm select ion 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 Main Menu Channel 1 with X or S or return to
Measuring Mode with ESC.

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4.5. Status, warning and error messages

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

• Status messages

• Warning messages

• Error messages

The status and warning messages for the respective testo 6610
probes connected to the transmitter can be evaluated via the P2A
software.

All messages are stored in the transmitter with an operating hours
stamp. Use the user menu (see Editing Message main menu, page

49) or the P2A software (see volume 2, Transmitter history, page

126) 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.

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4 Transmitter

54

4.5.1. Status messages

Status messages show the current operating status of the testo

6383.

Message Display Description

02506

Sensor
initialization

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

01D19 Service plug

The Mini-DIN socket is connected
to: the USB adapter for P2A
software, the adjustment adapter

or the service plug (is not
recorded/no number)

00300 New limit value

The limit value has been changed

or shifted
00301 Scaling changed The scaling has been changed
00500 Transmitter reset

The transmitter was reset to the

factory settings and is restarted.
0052F Reset Min/Max

Resets all saved Min/Max values

for all channels
02518 Probe reset

Probe reset: The probe performs a

reset
00503

Reset device to
fact

A factory reset of the transmitter

was performed
02503

Reset probe to
fact

A factory reset of the probe was

performed
00530

Change solenoid
valve

The solenoid valve should be

changed
00307

User Setting
Change

User Setting Change: General

settings were changed for the

transmitter.
00117 Adjustment DeltaP

An n-point adjustment was

performed.
02104 Analog adjustment

An analog adjustment has been

made
02101 1-point adjustment A 1-point adjustment is performed.

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55

Message Display Description

02105

Self-adjustment
active

For testo 6615 probe only: The
probe performs an automatic self­adjustment

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4.5.2. Warning messages

Warning messages show an early warning or a current malfunction
which may negatively impact measuring.

Message Display Cause Remedying of fault

00809

Pressure too
high**

The process pressure
exceeds the pressure
intended for the
transmitter

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

00E00 T ambient high**

The ambient
temperature exceeds
the permissible
temperature for the
transmitter

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

00E01 T ambient low**

The ambient
temperature is below
the permissible
temperature for the
transmitter

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

00E04/00E
05

Supply voltage
low**

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

Take measures to
ensure sufficient
voltage supply

02822 T process high**

The process
temperature exceeds
the temperature
designated for the
probe

Remove the probe from
the process and take
any necessary
measures to lower the
process temperature

02821 T process low**

The process
temperature is below
the temperature
designated for the
probe

Take necessary
measures to raise
process temperature

0081C Alarm 1**

Depending on the
parameterization of the
relays

Depending on the
parameterization of the
relays

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56

Message Display Cause Remedying of fault

0081D Alarm 2**

Depending on the
parameterization of the
relays

Depending on the
parameterization of the
relays

0081E Alarm 3**

Depending on the
parameterization of the
relays

Depending on the
parameterization of the
relays

0081F Alarm 4**

Depending on the
parameterization of the
relays

Depending on the
parameterization of the
relays

02806 Condensation*

100 % RH has been
reached, condensation
developing

Take measures to
reduce process
humidity

02807

Values less than
0 % RH**

The adjustment or
sensor is faulty

Check adjustment (via
P2A adjustment history,
perform 2-point
adjustment where
necessary). If the
problem persists,
contact Testo Service

02809

Sensor early
warning*

For testo 6617 probe
only: The cover
electrode of the sensor
is damaged; this may
soon cause the sensor
to break

Carry out visual
inspection. If the mirror­like surface of the
sensor is dirty or
damaged, contact
Testo Service

* Early warning
** Current malfunction

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4.5.3. Transmitter error messages

Error messages show a current malfunction.

Message Display Cause Remedying of fault

03401 No probe signal

The probe
communication is
interrupted

Ensure that the probe
connector is fully
engaged in the
transmitter.

If communication still
cannot be established,
contact Testo Service

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57

Message Display Cause Remedying of fault

03508 Wrong probe

The connected probe
is not compatible with
the present transmitter

Use a compatible probe
Note: Probe 661x for

transmitter 638x

01505 Watchdog error

Due to a processor
error, the transmitter
performs an automatic
restart

If the problem occurs
frequently, contact
Testo Service

0300A

% RH short­circuit

Short-circuit in humidity
sensor

Contact Testo Service

0300B

% RH sensor
broken

The humidity sensor is
damaged (sensor
broken)

Contact Testo Service

0300C T short-circuit

Short-circuit in
temperature sensor

Contact Testo Service

0300D T sensor broken

The temperature sensor
is damaged (sensor
broken)

Contact Testo Service

03105

Self-adjustment
error

For testo 6615 probe
only: The automatic
self-adjustment was
faulty

Contact Testo Service

03106 Adjustment error

The adjustment of the
probe was faulty

Contact Testo Service

01115

Low adjustment
temperature

The ambient
temperature is too low
during the pressure
adjustment

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

01116

High adjustment
temperature

The ambient
temperature is too high
during the pressure
adjustment

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

03000

Heat function
defective

For testo 6614 probe
only: Heat function
defective

Contact Testo Service

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4.5.4. Handling alarm messages

Shown on the
display

3

Can be used for
collective alarm4

Additional
message end5

New limit value x
Scaling changed x
Pressure too high x x
Delta p adjustment x
Alarm 1 x
Alarm 2 x
Alarm 3 x
Alarm 4 x
Transmitter reset x
Reset Min/Max
Transmitter refresh x
User Setting Change
Analog adjustment x
1-point adjustment x
Probe reset x
T ambient high x x
T ambient low x x
Supply voltage low x x
T process high x x
T process low x x

3

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.

4

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.

5

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.

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Shown on the
display3

Can be used for
collective alarm4

Additional
message end5

Condensation x x
Values less than

0 % RH

x x

Sensor early warning x
No probe signal x
Watchdog error x
% RH short-circuit x x
% RH sensor broken x x
T short-circuit x x
T sensor broken x x
Heat function

defective

x x

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

• The message/alarm is no l onger 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 assigne d to the collective alarm, the
collective alarm is reset. If the collective alarm is set on a relay,
the relay is also reset, meaning switched to its neutral position.

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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"
industry standard.

Status
message in
the display

Display
value in
display

Class Analog output

0 to
20 mA

4 to 20
mA

1 V 5 V 10 V

No probe
signal

None Error 21 mA 21 mA 1.1 V 5.5 V 11 V

Wrong probe None Error 21 mA 21 mA 1.1 V 5.5 V 11 V

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Status
message in
the display

Display
value in
display

Class Analog output

Values < 0
%RH

uuuuu Underrange 0 mA 3.8 mA 0 V 0 V 0 V

Condensation ooooo Overrange 20.5 mA 20.5 mA 1.1 V 5.5 V 11 V
% RH short-

circuit

----- Error 21 mA 21 mA 1.1 V 5.5 V 11 V

% RH sensor
broken

----- Error 21 mA 21 mA 1.1 V 5.5 V 11 V

T short-circuit ----- Error 21 mA 21 mA 1.1 V 5.5 V 11 V
T sensor

broken

----- Error 21 mA 21 mA 1.1 V 5.5 V 11 V

T process low uuuuu Underran ge 0 mA 3.8 mA 0 V 0 V 0 V
T process

high

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

Probe
disconnected

None Error 21 mA 3.8 mA 1.1 V 5.5 V 11 V

Watchdog
error

Previous
value
stops

Error 21 mA 3.8 mA 1.1 V 5.5 V 11 V

Value below
min. scale

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

Value above
max. scale

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

Pressure too
high

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

Heat function
defective

----- Error 21 mA 21 mA 1.1 V 5.5 V 11 V

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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 (Operati on, page 36) or

• P2A software (volume 2, Parameterizing, adjusting and
analyzing software (P2A software), page 101)

Convenient "remote monitoring" of the transmitter can be
implemented, for example by using a relay as a collective alarm
(see Using alarm as collective alarm or not using it at all, page 43)
whose messages are forwarded to a local alarm transmitter (horn,
light) or PLC.

4.6.2. Cleaning the instrument

Integrated humidity probe

The humidity sensor of the integrated humidity probe in particular
must be protected.

The sensors of the integrated humidity probe must not
make contact with cleaning agents, otherwise the
functionality can no longer be guarantee d.

1. Put supplied plastic cap on the integrated humidity probe.

2. Wipe surface of the instrument with mild cleaning agents and a
soft cloth.

3. Remove plastic cap.

Instrument surface

✓ Integrated hum idit y probe is protected by the plastic cap.

• Clean the surface of the instrument with mild cleaning agent s
(e.g. washing-up liquid) and water. Only use gentle and
standard cleaners.

• Do not use any aggressive or chafing cleaning agents such as
thinner, liquid scouring agent, wax, benzine, concentrated acids
and lyes.

• Carefully rub down the instrument surface with a moist and soft
cloth.

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0970 6383 en V01.0 V01.40-1 en-GB Vol1