Paul Wegener PWBlogg N6/40 User manual

Operating manual
Data acquisition system
PWBlogg
Type: N6/40

Paul Wegener GmbH
Paul Wegener GmbH
Marienstraße 24
D-06493 Ballenstedt
3. Edition 2013, Editing Date 08/13
© Paul Wegener GmbH, Ballenstedt
All rights reserved. No section of the operating manual may be replicated or processed, duplica-
ted or distributed using electronic systems in any way (print, photocopy, microlm or other me-
thods) without prior written permission of the Paul Wegener GmbH.
Design and specications are subject to change without notice.
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Operating manual of data acquisition system PWBlogg
The data logger PWBlogg N6740 is in accordance with the directive 94/9EG (ATEX) as operatio-
nal supplements falling in category II 3 G for safe use within gas explosion hazard area of zone 2
deliverable.
The data logger with ignition protection type nA is a non-sparking operating resource with low pow-
er input according to DIN EN 60 079-15.
Please, pay attention to the following note on safety:
• The online-outlet must only be used when there is no existence of an explosive atmosphere.
When the system is not used, the online-outlet has to be closed using the protective cap.
• Check whether there is a necessity of embedding into the potential equalization of the equipment
or the metering point. This potential equalization can happen via process (pressure) connection.
• Charging the accumulator must only be done outside of the ex-area (provided that there is no
explosive atmosphere.
• Damaged devices must not be operated anymore. Please contact manufacturer for purpose of
repair.
• Allsubsequentmodicationstothedeviceresultintheconsequencethatasecureuse
isnomoreguaranteedwithinex-zone2andtheEC-declarationofconformitylosesist
validity.
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Safetyprecautions
Power supply of the data measurement and storage device is provided by a built-in lithium ion ac-
cumulator. Please consider the following notes on safety during operation of the devices:
• Charging must only be done by the provided charger
• Charging must be done away from easily inammable items
• Do not short circuit lithium ion accumulator
• Burning accumulators must never be extinguished by water! EXPLOSION HAZARD!
• Do not throw into re! EXPLOSION HAZARD!
• Do not charge unattended
• Do never open battery cell! EXPLOSION HAZARD!
• Do not use damaged accumulators!
• If electrolyte touches skin, immediately rinse skin with plenty of water and soap and consult a
doctor.
• If electrolyte touches eyes, immediately rinse the eyes with plenty of water and consult an oph-
thalmologist.
• Recycle completely discharged accumulators only.
Attention: The device consists of electrostatically sensitive components. Opening
thedevicemustonlybedonebymanufacturerorbyauthorizedpersons.
Safetyinstructionsforuseinex-zone2

Paul Wegener GmbH
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Contents
1 Start-up instruction 5
2 Data logger PWBlogg N6/40 5
2.1 Data logger parameters 6
2.2 Error sources 7
2.3 Data communication 7
3 Charging the built-in accumulator 9
4 Technical specications 9
4.1 Data logger 9
4.2 Explosion protection (optional) 10
4.3 Data memory 10
4.4 Estimation of accumulator service life 10
5 Recycling of batteries and old appliances 10
6 Troubleshooting 12

Operating manual of data acquisition system PWBlogg
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1 Start-upinstruction
Please note the following references during the rst initiation of the data logger:
• Install the software PWB-Soft including driver for the USB cable on your PC/laptop.
• Thereafter, connect the data logger to the PC/laptop using the provided PC data cable. For that,
take an unused interface of your PC.
• Start the software.
• Set up the serial interface in the dialog box „Settings“ of menu item „File“. You will recognize the
interface by the indication (USB).
• Establish connection between PC and data logger via „Connection“.
• Make all necessary settings in dialog eld „Conguration“. In particular, note that a 1 minute
sample rate is adjusted and start measurement is dated ahead by one year when delivering the
device in order to take care of the accumulator.
• After conrming by „OK“, the data logger will be congured again and the memory will be clea-
red. Measurement can start now.
• Note that measurement starts only when exceeding the preset time of measurement start.
2 DataloggerPWBloggN6/40
The data logger has been particularly developed for logging pressure and temperature readings.
Because of its solid stainless steel case, the data logger is particularly suitable for net analysis in
the eld of gas and water. The measurement range begins at 50 mbar.
Data logger
The data logger has an integrated analog digital converter with high resolution which is responsible
for logging and digitizing pressure and temperature readings. A microprocessor stores the readings
in the integrated memory. At its highest expansion stage, it can log 3,8 million readings. Data logger
parameterizing as well as reading and evaluating performance data is done on any PC, laptop or
netbook with Windows operating system by using PWB-Soft 2.1. Just a USB interface for connec-
ting the reading cable is necessary.
Pressure measurement
Pressure can be recorded both relatively and absolutely. Relative pressure mesurement is done ze-
ro-referenced against ambient air pressure on site. A waterproofed pressure equalization element
provides pressure equalization inside the housing. To protect the pressure equalization element
optimally from permanent moisture penetration by submergence of the metering point, this element
is connected to the data logger by a tube. The pressure equalization element can be optimally po-
sitioned by a exible fastener.
When taking absolute measurement, no pressure equalization is necessary as pressure is measu-
red against vacuum or a xed pressure. To calculate relative pressure, the absolute reading can be
offset against the air pressure metered on-site and, hence, the relative pressure can be determined.
But this methode is predominantly qualied for pressure reading in the bar range!

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Paul Wegener GmbH
2.1 Dataloggerparameters
Following, relevant settings for recording and saving performance data can be adapted to measu-
rement requirements by means of the conguration dialog of the PWB-Soft on PC/laptop/netbook/
pocket PC:
• Identication (eg company address)
• Short text (location, project number)
• Start measurement (date/time)
• Intervall 1 and interval 2
• Threshold defaults for analog channels
• Way to store performance data (ring memory / linear memory)
Start measurement
The start measurement determines date and time of measurement commencement. Hence, this
eld undertakes two important tasks. On the one hand, a synchronous measurement start for land
measuring can be set (all loggers commence measurement at the same time). On the other hand,
this eld is used for permanent deactivating measurement. As long as start measurement is not
reached, the logger is in energy saver mode. When the logger is not used, that way it can be simply
deactivated.
Identication/Short text
The elds Identication and Short text can be used for saving any descriptive information eg loca-
tion or project. The Short text can additionally be useful as default for saving performance data on
PC, laptop or netbook.
Interval 1 und interval 2
Two increments (sample rate) for logging and saving performance date can be set. Interval 1 is
adjustable from 1s up to 1h and is used for logging performance data during normal operation. In-
terval 2 can be set from 1s (optional 10ms) up to 1min. It will be activated once a threshold violation
is recognized.
Threshold monitoring
The data logger provides specifying thresholds and records threshold violations by means of a se-
cond sample rate. Additional to the threshold, a hysteresis can be specied
Important parameters to monitor thresholds are described as follows:
Storage mode
The storage mode species whether performance data are supposed to be always recorded or in
case of an alarm only. That way it provides event-driven data recording.
Sample mode
The sample mode can be set to „limit value monitoring“ or „standard“. At „standard“ mode, interval
1 values are measured and recorded (depending on memory saving mode). In case of a threshold
violation a redirection to interval 2 is done where measuring is carried out as long as the threshold
violation is cancelled (in consideration of adjusted hysteresis values).
The setting „permanent limit value monitoring“ means permanent sampling in interval 2. This leads
to an immediate identication of threshold violations. Thereafter, the memory interval 1 will be redi-
rected to interval 2. Please note that frequent sampling of transducers increases power consump-
tion of data logger and decreases economic life-time of the battery!
Shorted alarm storage
In case of a threshold violation normally data recording will be continued with interval period 2. The
period of data recording can be much shorter than expected. To avoid it, the option „shorted alarm
storage“ can lower that period of time where interval 2 for storage is used. The storage is limited to
a maximum of 2 x interval 1 (eg 2 x 5 min). Subsequently, it is continued to measure in interval 2
but recorded just with the cycle of interval 1.
Password protection
The conguration can be protected via password against unauthorized access. Without knowledge
of password, it is not possible to clear stored data or to change conguration of the data acquisition
system.

Operating manual of data acquisition system PWBlogg
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The analog signals of transducers are converted into a digital value with resolution of 8 bit, 12 bit,
14 bit or 16 bit. The following table demonstrates the difference between resolutions by means of
a 16 bar transducer. The values, represented in PWB-Soft program or on LCD must be rounded to
the defaulted number of decimal places so that the increment between two neighbouring values is
not always identical.
ADU digital steps reading resolution
8 bit 256 62,5 mbar
12 bit 4096 4 mbar
14 bit 16384 1 mbar
16 bit 65535 0,25 mbar
Table: AD conversion, resolution
Potential error sources are non-linearities of AD converter which are irrelevant on resolution of 8
bit or 12 bit. However, another important one is the digital step at small resolutions. At the limit of
two sequent digital values, the tolerance between the measured (in digital steps presentable) and
the real value (other sources of error excluded) already amounts ½ resolution step. As in the table
8 bit is equivalent to 31,25 mbar. Additionally, there are device-dependent sources of error such
as temperature drop or deterioration of components. At resolutions as 14 bit and 16 bit, they have
much importance.
2.2 Errorsources
2.3 Datacommunication
The specially developed software PWB-Soft provides data communucation with the data logger
N6/40. Any necessary parameters on measurement are set here. Fot that purpose this software
provides different dialog windows.

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Paul Wegener GmbH
Performance data evaluation can be done in tabular form or as chart.
Individual periods can be enlarged by the integrated zoom function.

Operating manual of data acquisition system PWBlogg
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• For charging the accumulator, use the provided original charger exclusively
• Make sure that the charger‘s specied input voltage corrensponds to your local supply voltage.
• The used power socket must be accessible throughout entire charging process.
• While charging, temperature must be between +10°C and +45°C.
• The status LED‘s of the charger indicate charge state during process (red = charging, green =
charging nished)
• Charging an empty accumulator takes about 3 hours.
• You can inform yourself on accumulator‘s residual capacity by means of the PC software PWB-
Soft.
• To preserve the accumulator, you should deactivate measurement when not needed for some
time by setting measurement start ahead. The ideal storage residual capacity is about 20%,
never store with an empty accumulator.
Note:Depthdischargedamagestheaccumulatorpermanently.
When falling below minimum voltage, data logging will be stopped. The data logger will be operated
in power-saving mode. If the accumulator‘s residual capacity falls below 20%, then, at the latest, it
should be recharged. We recommend 100% charging prior to any operation.
The accumulator must not be replaced by user. If for your N6/40 a new accumulator is needed,
forward the device to the manufacturer for replacement.
3 Chargingthebuilt-inaccumulator
4 Technicalspecications
4.1 Datalogger
Case stainless steel, approx. 140 x Ø40 mm
Degree of protection IP67
Transducers pressure transducer DS1/40 0...50 bar up to 0...70 bar
optional: temperature transducer, in controller integrated -20...60°C
Data memory 256kB, up to 3,8 MB
Threshold adjustable upper and lower limit value and hysteresis
Sample rate freely adjustable 1s up to 1h
AD converter 8 bit (256 digital levels, ±½ LSB)
12 bit (4096 digital levels, ±1LSB)
14 bit (16384 digital levels, ±1LSB)
16 bit (65536 digital levels, ±1LSB)
Real time clock deviation 5 ± 23 ppm (∆f/f0) at 25°C
Storage mode ring memory mode(overwrites oldest data at full memory or linear memory
mode (stops at full memory)
Interface serial interface, 9600 Bd, max. 115200 Bd
when reading data
Power supply 3,7V lithium ion accumulator (2600 mAh)
Operating/storage
Temperature -20..60°C

Paul Wegener GmbH
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Used electric appliances, batteries and rechargeable batteries are subject to particular statutory
provisions. Batteries, rechargeable batteries and electric appliances must not be disposed with the
household waste. The end user is obligated to return them by the law. Used electric appliances,
batteries and rechargeable batteries can be disposed at collecting points, municipal disposal areas
or by manufacturer / supplier.
The Paul Wegener GmbH as seller of batteries and electric appliances fullls its take-back obliga-
tion and disposes used batteries and old electric appliances free of charge.
This take-back obligation, however, limits itself to used electric appliances, batteries and recharge-
able batteries which belong or belonged to the product range of the Paul Wegener GmbH and the
amount which was delivered by the Paul Wegener GmbH.
The end user bears the forwarding charges.
Storage times of the internal memory result from the number of channels occupied, from preset
sample intervals 1 and 2 as well as from storage and sample mode. If the reading resolution is > 8
bit (12, 14 or 16 bit), possible storage times will halve themselves.
Non sparking II3G Ex nA IIB T4 according to EN 60079-0 and EN 60079-15 for safe use within
the explosion-hazard area of zone 2.
4.2 Explosionprotection(optional)
4.3 Datamemory
5 Recyclingofbatteriesandoldappliances
4.4 Estimationofaccumulatorservicelife
Following table contains accumulator durations depending on preset sample rate and based on
following assumptions:
• constant ambient temperature of 20°C
• constant power consumption of built-in components
• no capacity loss by aging of the accumulator
• no fault current due to defective components
As the above-mentioned exceptions are unrealistic, to be on the safe side, we assume 60% of the
real accumulator capacity is provided only. For calculation, the underlying standby current of the
system will be increased by factor 2. Though deviations (positive, negative) can not be excluded
from mentioned duration!
Sample rate in s Batteryservicelifein
days
1 131
2 202
5 297
10 352
15 376
30 402
60 417

Operating manual of data acquisition system PWBlogg
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EG-DECLARATIONOFCONFORMITY
Herewith we declare that the data acquisition systems of type range
PWBlogg N6/40
complies with the directive 2004/108/EG in reference to electromagnetic compatibility and 94/9/EG
for use according to regulations in consideration of explosion-hazard areas. The data acquisition
system was developed according to following harmonizing of standards:
EN 61000-6-3 subject basic standard for emitted interference – emitted interference for living
quarters, business- and trade as well as small rms
EN61000-6-2 subject standard for interference resistance– industrial sector
EN 60079-0 electrical equipment for explosion-hazard areas, section 0: general requirements
EN 60079-15 electrical equipment for explosion-hazard areas, section 15: construction, test and
marking of electrical equipment of ignition protection type „n“
Marking for safe use in explosion-hazard areas with category 3G (zone 2):
II3GExnAIIBT4
Manufacturer: Paul Wegener GmbH
Marienstraße 24
D-06493 Ballenstedt
Tel.: [phone]
Fax.: [phone]
Internet: www.paul-wegener.de
e-mail: [e-mail]
Thesafetyadviceoftheproductdocumentationmustbefollowed!
Ballenstedt, 01.08.2013
Wegener
Managing Director

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6 Troubleshooting
Problem Measure
Software reports:
„No modules found!“
Check the following:
• whether the correct interface has been chosen
• whether the cable to data logger and PC is connected properly
• A defective accumulator can not be charged, not even by mains adapter. The data
logger can not be connected without power supply! In this case, have the accumula-
ter replaced by manufacturer.
No data stored in controller Check, whether:
• a preset start time has been reached
• all transducers and cables are functional
Have checked by manufacturer, whether:
• accumulator is functional
• moisture has been intruded into the data logger
Accumulator is low Have it replaced by manufacturer
Password forgotten Read out performance data, send reading le to manufacturer
Software does not read
per-formance data comple-
tely or reports errors when
reading out the data
Check, whether:
• the PC data cable is properly connected
Have checked by manufacturer, whether:
• moisture is intruded in the data logger
• accumulator of the data logger is functional
Connect it directly again (menu item „module/connect“) and start reading performance
data again.
Modern computers have power management functions. During shutdown of hard disk
or change into standby mode the CPU can be busy temporarily, so that it „oversleeps“
the sent characters. This leads to abort of reading out. If necessary, extend periods for
activating standby functions or switch off the power management.
Paul Wegener GmbH

Operating manual of data acquisition system PWBlogg
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Paul Wegener GmbH

Operating manual of data acquisition system PWBlogg
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Paul Wegener GmbH
Tel.:
Fax:
Internet:
e-mail:
[phone]
[phone]
www.paul-wegener.de
[e-mail]
Most recent emendment: 01.08.2013
PWB FORM 2085-EN13
Paul Wegener GmbH
Marienstraße 24
D-06493 Ballenstedt