TESTO 6381 User manual

testo 6381 Ethernet · differential pressure transmitter
testo 6610 · Probes
P2A software · Parameterizing, adjusting and analyzing
software
Instruction manual Volume 2

5 Contents
91
5Contents
6testo 6610 probes ..................................................................................93
6.1. Specifications ................................................................................93
6.1.1. Functions and use .........................................................................................93
6.1.1.1. Digital probes:...................................................................................93
6.1.1.2. The Testo humidity sensor................................................................93
6.1.1.3. Self-diagnosis ...................................................................................94
6.1.2. Design of the probe........................................................................................95
6.1.3. Accessories ...................................................................................................95
6.2. Product description........................................................................96
6.2.1. Overview of probe and filter types..................................................................96
6.2.1.1. Probe version....................................................................................96
6.2.1.2. Determining the accuracy/measuring uncertainty..............................96
6.2.1.3. Ordering options for testo 6610 probe (0555 6610)...........................97
6.2.1.4. Protection caps .................................................................................99
6.2.2. testo 6611 wall probe.....................................................................................99
6.2.3. testo 6612 duct probe ..................................................................................102
6.2.4. testo 6613 cable probe ................................................................................106
6.2.5. testo 6614 heated cable probe.....................................................................109
6.2.6. testo 6617 cable probe (self-monitoring)......................................................116
6.2.6.1. Self-monitoring of cover electrode...................................................117
6.3. Commissioning ............................................................................120
6.3.1. Installing the probe ......................................................................................120
6.3.1.1. Installing the testo 6611 wall probe .................................................120
6.3.1.2. 2.3.1.2 Installing the testo 6612 duct probe.....................................120
6.3.1.3. 2.3.1.3 Installing testo 6613/6614/6615/6617 probes......................120
6.3.2. Connecting/removing the probe to/from the transmitter................................125
6.4. Maintenance and cleaning...........................................................125
6.4.1. Replacing filters/protection caps ..................................................................125
6.4.1.1. Replacing the filter/protection caps for testo 6611 wall version .......125
6.4.1.2. Replacing the filter/protection cap for testo 6612 duct version ........126
6.4.1.3. Replacing the filter/protection cap for duct versions ........................127
6.4.2. Cleaning the instrument and filter/protection cap .........................................127
6.4.3. Replacing the sensor ...................................................................................127
7Parameterizing, adjusting and analyzing software (P2A software).128
7.1. Specifications ..............................................................................128
7.1.1. Functions and use .......................................................................................128
7.1.2. System requirements...................................................................................129
7.1.3. Scope of delivery .........................................................................................129
7.2. First steps....................................................................................130
7.2.1. Installing the software/driver ........................................................................130

5 Contents
92
7.2.1.1. Installing P2A software ................................................................... 130
7.2.1.2. Installing USB driver ....................................................................... 130
7.2.1.3. P2A software upgrade .................................................................... 130
7.2.2. Starting the software.................................................................................... 130
7.2.2.1. Starting the program ....................................................................... 130
7.2.2.2. Establishing a connection with the instrument................................. 130
7.2.2.3. Activating the connection with the instrument ................................. 131
7.3. Using the software ...................................................................... 131
7.3.1. User interface .............................................................................................. 131
7.3.2. Editing instrument/parameter file ................................................................. 134
7.3.2.1. Changing instrument/parameter file ................................................ 134
7.3.2.2. Creating a new instrument file......................................................... 145
7.3.2.3. Saving parameters.......................................................................... 146
7.3.2.4. Opening the parameter file ............................................................. 146
7.3.2.5. Copying and pasting parameters .................................................... 146
7.3.2.6. Deleting instrument/parameter file .................................................. 147
7.3.3. Analyzing/testing the transmitter.................................................................. 147
7.3.3.1. Analyzing/testing the instrument ..................................................... 147
7.3.3.2. Carrying out factory reset................................................................ 148
7.3.3.3. Testing analog output ..................................................................... 148
7.3.3.4. Testing switch output relays 1 to 4.................................................. 150
7.3.3.5. Displaying min./max. values............................................................ 151
7.3.4. Adjusting the transmitter .............................................................................. 152
7.3.4.1. 1-point adjustment .......................................................................... 152
7.3.4.2. 2-point adjustment .......................................................................... 154
7.3.4.3. n-point adjustment .......................................................................... 155
7.3.4.4. Adjusting the analog output ............................................................ 156
7.3.5. Transmitter history....................................................................................... 157
8Tips and assistance ............................................................................ 162
8.1. Questions and answers .............................................................. 162
8.2. Accessories and spare parts....................................................... 162
8.2.1. Ordering options for 6381 transmitter (0555 6381) ...................................... 165
8.2.2. Ordering options for testo 6610 probes (0555 6610).................................... 169
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6testo 6610 probes
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6.1. Specifications
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6.1.1. Functions and use
The plug-in, adjusted probes from the testo 6610 family are used
together with the testo 6381 transmitter.
These measuring units are suitable for the following applications,
for example:
• Process instrumentation
• Clean rooms
• Test benches
• Drying processes
• Production and storage air quality
• Complex room climate applications.
6.1.1.1. Digital probes:
The probes are adjusted in the factory and transmit their
adjustment data to the internal memory of the testo 6381
transmitter. The information is only transmitted between the probes
and transmitter digitally. The probes can therefore be disconnected
from the transmitter for adjustment or servicing while the transmitter
itself can remain at the measuring point.
Hint: We recommend in this case that a probe of the same
type be inserted into the transmitter immediately in order to
be able to continue measuring with minimal interruption.
The transmitter identifies the probe and records that a probe was
connected in the history.
The testo 6381 transmitter can only be used with testo
6610 probes.
6.1.1.2. The Testo humidity sensor
With the Testo humidity sensor, which has been in successful use
and continually improved for more than ten years, the focus has
from the very beginning been on both accuracy parameters,
namely measuring uncertainty and long-term stability.

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The capacitive humidity sensor is in principle a plate capacitor
consisting of two electrically conductive plates (electrodes (1) and
(2), see diagram below) opposite each other.
A humidity-sensitive polymer (5) serves as the dielectric. The
special feature lies in the perfect way the individual layers are
matched to each other. This is evident particularly in the top
electrode, which has to perform two tasks that, at first glance,
appear contradictory: it must be completely permeable to the water
vapour that is to be fed into the polymer dielectric, but at the same
time it must be impervious, smooth and repellent to condensate, oil
and dirt in order to protect the sensor.
1 Cover electrode
2 Bottom electrode
3 Substrate (ceramic substrate for
mechanical protection)
4 Connections (protected against
corrosion)
5 Dielectric layer
The humidity sensor cannot be exchanged by the customer
(except for 6611). The humidity sensor may not be
damaged or touched. Contamination and damage lead to
an impairment of the measurement and the measuring
accuracy.
6.1.1.3. Self-diagnosis
The probes in the testo 6610 range monitor their functionality
themselves and report the following faults:
• Sensor breaks
• Sensor short-circuit
• Condensation
The condensation message is issued at a reading of 100 % RH
and deactivated once the readings are within the valid range.
• Error message with drift at the adjustment points
• Value for relative humidity less than 0 % RH.
The trigger threshold is set at -2 % RH. This means that an
error message is only issued once a clear effect is discernible.
• Early warning when sensor corrosion is starting to develop
The testo 6617 probe is able to signal the first signs of
corrosion. The probe can thus be changed at an early stage
without interrupting the machine availability.

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• Self-adjustment (testo 6615 only)
• Excess temperature
Error message if permissible process temperature is exceeded
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6.1.2. Design of the probe
The probes of the testo 6610 family are made up of the following
components (included in delivery):
• Probe connector
• Probe shaft with protection cap and sensors (% RH and °C or
°F)
• Mounting bracket (for testo 6612 duct version)
• Probe cable (testo 6612 to 6617 duct and cable versions), bend
radius minimum Ø 50 mm.
1 Probe connector
2 Probe length
3 Probe
4 Protection cap, sensor underneath
5 Probe
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6.1.3. Accessories
The following accessories are available for the probes from the
testo 6610 family:
• Filters and protection caps (see Protection caps, page 99)
• Calibration certificate in accordance with ISO and DKD (see
Accessories and spare parts, page 162).

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6.2. Product description
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6.2.1. Overview of probe and filter types
6.2.1.1. Probe version
A detailed description of the probe versions can be found from
testo 6611 wall probe, page 99 onwards.
The following probe versions are available for the testo 6381
transmitter:
Version Article no. Characteristic
testo 6611 0555 6610-L11 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 Duct 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 %
RH; temperature range -40 to +180 °C/
-40 to 356 °F, sensor soldered
testo 6615 0555 6610-L15 Trace humidity cable probe version; accuracy to
±6 K at -60 °Ctd; 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
6.2.1.2. Determining the accuracy/measuring uncertainty
The entries for the measuring uncertainty for the probe are
determined in accordance with GUM (Guide to the Expression of
Uncertainty in Measurement/DIN V ENV 13005).
All parts that make up the measuring uncertainty given by Testo
are listed below. When comparing the measuring
uncertainty/accuracy between manufacturers, which components
are included is to be taken into account. In many cases, not all
elements that contribute to measuring uncertainty are assessed, for

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example if the error contribution of the production adjustment for
some manufacturers is shown separately or not at all.
The measuring uncertainty of the probe includes the sensor and its
electronics as well as the output of the digital measuring signal:
1 Linearity including scatter Systematic error and scattering of the
components (due to manufacturing
tolerances)
2 Hysteresis Hysteresis indicates the maximum deviation
of the readings that are obtained when you
set the same value for the parameter, once
coming from a smaller value, once coming
from a larger value (humidity sensors actually
have no hysteresis, but rather very slow
adjustment effects that appear to be
hysteresis when considered only for a short
period.)
3 Reproducibility Repeatability (scattering of the readings in
the event of the same parameter being
entered successively)
4 Production adjustment area The measuring uncertainty of the reference
instruments of the adjustment area (including
the reference instrument) in production
5 Uncertainty of the testing Uncertainty of the procedure for determining
points 1 and 2
6.2.1.3. Ordering options for testo 6610 probe (0555 6610)
Order code Characteristic
Lxx Probe type
L11 Probe 6611
L12 Probe 6612
L13 Probe 6613
L14 Probe 6614
L15 Probe 6615
L17 Probe 6617

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Order code Characteristic
Mxx Protection
caps
M01 Protection cap made of stainless steel
M02 Protection cap made of wire mesh
M03 Protection cap made of PTFE
M04 Metal protection cap (open)
M06 PTFE protection cap with condensate drip hole
M07 Protection cap made of PTFE with condensate
drip hole and condensation protector
M08 Protection cap for H2O2atmospheres
Nxx Cable length
N00 Without cable (testo 6611)
N01 1 m cable length (testo 6613, 6614, 6615,
6617)
N02 2 m cable length (testo 6613, 6614, 6615,
6617)
N05 5 m cable length (testo 6613, 6614, 6615,
6617)
N10 10 m cable length (testo 6613, 6614, 6615,
6617)
N23 Cable length specifically for duct versions
(testo 6612)
Pxx Probe length
P12 Probe length approx. 120 mm (testo 6613)
P20 Probe length approx. 200 mm (testo 6611,
6612, 6613, 6614, 6615, 6617)
P30 Probe length approx. 300 mm (testo 6612,
6613)
P50 Probe length approx. 500 mm (testo 6612,
6613, 6614, 6615, 6617)
P80 Probe length approx. 800 mm (testo 6612,
6613)

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6.2.1.4. Protection caps
One of the following protection caps can be used for each probe
version:
Filter*Article no. ** Characteristic Length A
(mm)
M01 0554 0647 Protection cap made of stainless steel 33
M02 0554 0757 Protection cap made of wire mesh 40.3
M03 0554 0759 Protection cap made of PTFE 35
M04 0554 0755 Metal protection cap (open) 35
M06 0554 9913 PTFE protection cap with condensate
drip hole
35
M07 0554 9913 +
0554 0166
Protection cap made of PTFE with
condensate drip hole and
condensation protector
35
55
M08 0554 6000 Protection cap for H2O2atmospheres 35
* When ordering the probe, please use this protection cap code, cf.
Ordering options for testo 6610 probe (0555 6610), page 97.
** When purchasing a replacement (protection cap only), please
use this order number.
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6.2.2. testo 6611 wall probe
The wireless testo 6611 probe is inserted into the testo 6381
transmitter mounted on the wall and ready-wired.
At a glance
1 Filter
2 Probe shaft
3 Key
4 Connector

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Application
• Monitoring and regulating the production and storage air quality
when manufacturing and storing hygroscopic products
• Meeting the top accuracy requirements
• Clean room applications for which a metal housing is required
Technical data
Parameters
• Humidity (% RH/°Ctd/°Ftd) etc.
• Temperature
Measuring range
• Humidity: 0 to 100 % RH
• Temperature: -20 to +70 °C/-4 to +158 °C
Material
• Probe shaft: Stainless steel
• Connector: ABS plastic
Accuracy (at 25 °C/77 °F)*
• Length 200 mm
• Humidity

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◦± (1.0 % RH + 0.007 x reading) for 0 to 90 % RH
◦± (1.4 % RH + 0.007 x reading) for 90 to 100 % RH
◦0.02 % RH/K, dependent upon the process temperature
(with a deviation of 25 °C/+77 °F)
◦0.02 % RH/K, dependent upon the electronics temperature
(with a deviation of 25 °C/+77 °F)
• Temperature
◦±0.15 °C (0.27 °F) with slope PT1000 DIN 1/3 class B
* Refer to the charts below for the correlation between
temperature and accuracy.
Reproducibility
• Better than ±0.2 % RH
Sensor
Response time without protective filter: t 90 max. 15 sec.
Probe dimensions
• Diameter of probe shaft: 12 mm
• E = 55 mm
• L = 200 mm
• L – A = 165 mm
• A, see Table Protection caps, page 99
Measuring accuracy of testo 6611 wall probe
Humidity error, absolute |±% RH| as a factor of process humidity
(% RH)

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Temperature error as a factor of process temperature and
temperature of electronics
Grey line: System error 6381 + probe, electronics 25 °C/+77 °F
Black line: System error 6381 + probe, electronics –25 to 70 °C/-13 to 158 °F
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6.2.3. testo 6612 duct probe
The testo 6612 probe measures the humidity and temperature in air
ducts.
At a glance
1 Filter (including:
humidity and
temperature sensor)
2 Probe shaft
3 Wall/duct holder
(accessories, order
no.: 0554 6651)
4 Mounting bracket
(permanently joined to
probe shaft)
5 Probe cable
6 Key
7 Connector

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WARNING
In the event of overpressures, the probe may become a
projectile.
> Mount the probe pressure-tight (see pressure resistance
under Technical data)
Application
• Monitoring and regulating the production and storage air quality
in air ducts when manufacturing and storing hygroscopic
products
• Meeting the top accuracy requirements
• Air duct applications for which a metal housing is required
Technical data
Parameters
• Humidity
• Temperature
Measuring range
• Humidity: 0 to 100 % RH
• Temperature: -30 to +150 °C/-22 to +302 °F
Material
• Probe shaft: Stainless steel
• Line: Sheathed, FEP

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• Connector: ABS plastic
Accuracy (at 25 °C/77 °F)*
• Humidity
◦± (1.0 % RH + 0.007 x reading) for 0 to 90 % RH
◦± (1.4 % RH + 0.007 x reading) for 90 to 100 % RH
◦0.02 % RH/K, dependent upon the process temperature
(with a deviation of 25 °C/+77 °F)
◦0.02 % RH/K, dependent upon the electronics temperature
(with a deviation of 25 °C/+77 °F)
• Temperature
◦±0.15 °C (0.27 °F) with slope PT1000 DIN 1/3 class B
* Refer to the charts below for the correlation between
temperature and accuracy.
Reproducibility
• Better than ±0.2 % RH
Sensor
• Response time without protective filter: t 90 max. 15 sec.
Probe dimensions
• Diameter of probe shaft: 12 mm
• L = approx. 200/300/500/800 mm
• L – A = 165/265/465/765 mm
• A, see Table Protection caps, page 99
Cable length incl. probe shaft and filter
• Customized for duct version
Pressure resistance
• PN 10 (probe tip)**
** If installing probe under pressure, use cutting ring screw
connection (order no. 0554 1795).

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Measuring accuracy of testo 6612 duct probe
Humidity error, absolute |±% RH| as a factor of process humidity
(% RH)
Temperature error as a factor of process temperature and
temperature of electronics
Grey line: System error 6381 + probe, electronics 25 °C/+77 °F
Black line: System error 6381 + probe, electronics –25 to 70 °C/-13 to 158° F
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6.2.4. testo 6613 cable probe
The testo 6613 probe is used when the spatial separation of the
transmitter and probe is required.
At a glance
1 Connector
2 Key
3 Probe cable
4 Probe shaft
5 Filter (including: humidity
and temperature sensor)
WARNING
In the event of overpressures, the probe may become a
projectile.
> Mount the probe pressure-tight (see pressure resistance
under Technical data)
Application
• Monitoring and regulating industrial humidity processes (apart
from high-humidity processes), e.g. food production, storing fruit
• Monitoring the production and storage air quality when
manufacturing and storing hygroscopic products
• Meeting the top accuracy requirements
• Clean room applications
• Applications for which a sturdy metal housing is required.
Testo recommends that the testo 6614 (heated) probe be
used for continuous high-humidity processes.

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Technical data
Parameters
• Humidity
• Temperature
Measuring range
• Humidity: 0 to 100 % RH
• Temperature: -40 to +180 °C/-40 to +356 °F
Material
• Probe shaft: Stainless steel
• Line: Sheathed, FEP
• Connector: ABS plastic
Accuracy (at 25 °C/77 °F)*
• Humidity
◦± (1.0 % RH + 0.007 x reading) for 0 to 90 % RH
◦± (1.4 % RH + 0.007 x reading) for 90 to 100 % RH
◦0.02 % RH/K, dependent upon the process temperature
(with a deviation of 25 °C/+77 °F)
◦0.02 % RH/K, dependent upon the electronics temperature
(with a deviation of 25 °C/+77 °F)
• Temperature
◦±0.15 °C (0.27 °F) with slope PT1000 DIN 1/3 class B

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* Refer to the charts below for the correlation between
temperature and accuracy.
Reproducibility
• Better than ±0.2 % RH
Sensor
• Response time without protective filter: t 90 max. 15 sec.
Probe dimensions
• Diameter of probe shaft: 12 mm
• L = approx. 120/200/300/500/800 mm
• L – A = 85/165/265/465/765 mm
• A, see Table Protection caps, page 99
Probe length incl. probe shaft and filter
• 1/2/5/10 m
Pressure resistance**
• PN 10 (probe tip)
• PN 1 (if end of probe/cable is involved in process)
** If installing probe under pressure, please use cutting ring screw
connection (order no. 0554 1795).
Measuring accuracy of testo 6613 cable probe
Humidity error, absolute |±% RH| as a factor of process humidity
(% RH)