dewetron - System Technology Sweden AB

www.dewetron.com
UNIVERSAL USB INSTRUMENT
The high end DEWETRON
performance with the easy of
use DEWESoft, the entry product with
8 analog multi-sensor inputs
8 counter inputs
2 CAN-bus interfaces
CPAD2 expansion for
low speed temperature
DEWE-43
DATA SHEET
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DEWETRON
8 COUNTER INPUTS
Counter inputs can be used for measurement of brake pedal
switch, speed and distance from external velocity sensor,
speed of four wheels, steering wheel position and others.
High quality counter inputs are able to perform basic counting, encoder measurement and frequency measurement in
the famous “supercounter” mode, which dramatically increases the accuracy of counting.
2 CAN BUS PORTS
CAN bus inputs are able to acquire two full
speed CAN bus lines to connect to vehicle
CAN or connect special sensors with CAN
output.
CONNECTIVITY
8 ANALOG INPUTS
The analog inputs are able to
acquire data from sensors like
pedal force sensors, brake cylinder pressure, temperature of
brake discs and others.
The system includes 8 simultaneous sampled 24-bit analog
inputs with front-end amplifier
for connecting voltage and strain
sensors as well as MSI amplifiers
to measure thermocouple, IEPE
or other sensors.
Optional low speed temperature modules
DEWETRON CPAD2 series modules are connected to a CAN
interface of the DEWE-43 to add low speed temperature inputs .
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DEWESoft
Analog Inputs
The aliasing-free 24-bit A/D converter offers the best base for this precision instrument. Standard voltage and strain
inputs can be expanded for any kind of temperature, vibration or high voltage sensors by using the DEWETRON-MSI
(Modular Smart Interface) connectors. All MSIs are automatically recognized as soon as they are connected.
Multisensor Inputs
Modular Smart Interfaces for DEWE-43
MSI-BR-V-200
200 V input adapter with DB9 connector
Differential input configuration, BNC connector
TEDS for automatic adapter identification
MSI-BR-ACC
IEPE adapter with DB9 connector
Excitation current 4 mA at 21 V, High pass filter 1.5 Hz,
BNC connector TEDS for automatic adapter identification
MSI-BR-CH-50
Charge input adapter with DB9 connector range up to 50000 pC,
AC coupled with 0.07 Hz, BNC signal connection,
automatic adapter identification
MSI-BR-TH-K
MSI-BR-TH-J
MSI-BR-TH-T
Thermocouple type K / J / T adapter with DB9 connector
For use with isolated thermocouple sensors only!
High accuracy cold junction reference measurement,
1 m thermo cable with Mini TC connector
TEDS for automatic adapter identification
MSI-BR-RTD
Pt100, Pt200, Pt500, Pt1000 and Pt2000 adapter with DB9 connector
2, 3 and 4 wire connection methods,
5-pin Binder 710 series connector
TEDS for automatic adapter identification
A complete range of solutions
for dynamic vehicle testing.
SOFTWARE
Counters
ADC-clock
Counter input
DEWETRON has advanced the state-of-the-art in counter/encoder inputs in our data acquisition systems,
improving yet again our counters.
The key advancement is that our counters are PHASE
SYNCHRONIZED. Referring to the diagram, you can see
that a standard counter is always a sample behind. With
software interpolation you can get closer, but only with
DEWETRON’s advanced time shifting technology are
both the phase and amplitude fully corrected!
Ideal counting
DEWETRON counter
Software interpolation
Standard counter
RPM-Measurement
Encoder
Tacho
Gearthooth, CDM
Gearthooth, TRG, CDM and TRG
Gearthooth with missing teeth
Gearthooth with double teeth
Length-Measurement
Linear encoder
Linear pulse sensor
Event Counting
Basic counting
Gated counting
Up/down counting
Waveform Timing
Period frequency
Two pulse edge separation
Period, pulse width,
frequency, duty cycle
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DEWETRON
Easy-to-use
Synchronous data acquisition of different
sources
Data export to almost any analysis package
Powerful online mathematics and filtering
Extensions for special applications
Networkable operation with synchronization
DCOM programmable extensibility
DEWESoft turns your hardware into a powerful
data acquisition system. Our award-winning
data acquisition package is second to none
when it comes to both pure recording power
and ease of use. Normally this is a difficult
balancing act: providing lots of capability and
performance, without making the user interface
hard to learn. But we‘ve done it!
CAN Bus Data Recording
Every automobile, truck, motorcycle, and most
military vehicles and even some aircraft engines
use the CAN bus. The „Controller Area Network“
(CAN) is a serial bus containing hundreds of
messages, each containing one or more channels of data. Cars, trucks, military vehicles,
and many aircraft engines use CAN to send
data about the engine, brakes, cooling system,
steering system, and dozens of other parameters. CAN makes testing these machines a lot
easier when you can access important parameters like the steering wheel angle, engine RPM,
and wheel speeds, by connecting to the CAN
bus rather than to spend hours instrumenting
the vehicle! In addition, more and more sensors today output their data on this multi-device, convenient data bus, and
thus the ability to record data from it becomes more and more important.
DEWETRON has been on the forefront of providing a powerful yet convenient interface for recording data from the CAN
bus, having introduced this in DEWESoft v5 in 2003. Today it is better and easier than ever, and we even added CAN bus
interfaces to our latest ORION cards, providing up to four synchronous CAN interfaces per system. Setup is convenient,
including the ability to import dbc database files, the de facto standard format for CAN channel setup.
Typical CAN-bus sensor
(measuring steering wheel)
Vehicle CAN-bus
diagnostic connector
T E C H N I C A L S P E C I F I C AT I O N S
ANALOG INPUT
Number of channels
Measured values
8 (simultaneously sampled)
Voltage, full bridge (IEPE, charge, thermocouple and RTD with MSI adapters)
Resolution
24-bit
Type of ADC
Sigma-Delta
Sampling rate
DEWE-43-DSA: 204.8 kS/s (DEWE-43: 51.2 kS/s)
76 kHz @ 204.8 kS/s (25 kHz @ 51,2 kS/s)
-3 dB bandwith
AMPLIFIER CHARACTERISTICS
Input ranges
Voltage
±0.01 V, ±0.1 V, ±1 V, ±10 V
Voltage via MSI-BR-V200
up to ±200 V
Full bridge
±10 mV/V, ±100 mV/V, ±1000 mV/V
Half or quarter bridge
With external bridge completion
IEPE via MSI-BR-ACC
±0.1 V, ±1 V, ±10 V
Thermocouple via
MSI-BR-TH-x
Full range of thermocouple type
(isolated thermocouple only)
Pt100, Pt200, Pt500, Pt1000,
Pt2000 and resistance via
MSI-BR-RTD
-200°C to 1000°C
and 0 to 6.5 kOhm
Accuracy
Input impedance
±0.1 % of range, ±0.5 mV
10 MΩ||33 pF (common mode), 20 MΩ||47 pF (differential mode)
CMRR
Sensor supply voltage
>80 dB
±5 V 0.1 % @ 50 mA, 12 V @ 100 mA per channel (total max. 5W)
Voltage mode coupling
DC
Overvoltage protection
±70 V
DYNAMIC CHARACTERISTICS
Signal to noise @ fs<1000 Hz
< -100 dB
Crosstalk
< -100 dB
COUNTER/DIGITAL INPUTS
Number of channels
Counter modes
8 counters or 24 digital inputs
(per software each counter can be selected to be 3x digital input)
Event counting, encoder input, period, pulsewidth, duty cycle,
frequency measurement
Resolution
32-bit
Time base
102.4 MHz
Signal levels
TTL/CMOS
Input voltage protection
30 V
CAN INPUTS
Number of channels
2
Specification
CAN 2.0B, up to 1 MB/s
Physical layer
High speed
ENVIRONMENTAL
Operating temperature
Storage temperature
Relative humidity
0 to 50°C
-20 to 70°C
95 % non condensing @ 60°C
PROCESSING
System
Interface
Requires PC based system with DEWESoft software
USB 2.0
POWER REQUIREMENTS
Supply voltage
6 to 36 V DC
Supply overvoltage protection
80 V
Negative input voltage protection
-30 V
Typical power consumption
typ. 5 W (max. 11 W at full sensor supply load)
PHYSICAL
Dimensions
Weight
223 x 78 x 45 mm (7.78 x 3.08 x 1.77 inch)
0.72 kg
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North & South America
Argentina
Brazil
Canada
Chile
Colombia
Costa Rica
Ecuador
Mexico
Peru
USA
Europe
Austria
Benelux
Czech Republic
Finland
France
Germany
Italy
Spain
Sweden
Switzerland
Turkey
United Kingdom
Asia & Pacific
Australia
China
India
Japan
New Zealand
Singapore
South Korea
Taiwan
Thailand
Vietnam
Headquarters:
DEWETRON Ges.m.b.H. • Parkring 4 • 8074 Graz-Grambach • AUSTRIA
(0043) 316 3070-0 •
(0043) 316 3070-90 •
sales@dewetron.com
DE-D080901E • All trademarks are acknowledged to be the property of their owners. Specification subject to change without notice. © DEWETRON Ges.m.b.H.
DEWETRON offices worldwide
08/2009
www.dewetron.com
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