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The DA100 has been designed in strict pursuit of improved user economy and environmental durability in field use.
The result is a reduced number of cables by means of remote-control measurement, smaller installation area due to its compact design, and reduced expense to users of converters through a wide choice of input modules. Plus, the model features enhanced environmental durability, such as improved insulation capabilities and withstanding voltages across the input channels and a wider range in the operating temperature. With all these features, the DA100 data acquisition terminal lends itself to a broad range of applications with amazing versatility, from high-speed, multi-point measurement to computational and statistical processing to applications with alarm output capabilities.
Superb Environmental Ruggedness
Every effort has been made in the design of the DA100 to reduce power consumption, thereby minimizing temperature rise. As a result, the unit can be operated over an ambient temperature range of -10°to 60°C. It can also withstand severe conditions encountered in the field.
Complete Channel Isolation and High-voltage Measurement
Channels at the input circuit are fully isolated with high-voltage solid-state relays.*1 The DA100 can withstand a common-mode voltage of up to 250 VAC*2 rms and a withstanding voltage of up to 1500 VAC*2 (for a duration of one minute). These features ensure that the model is even applicable to multi-point measurement in the field.
*1 RTD and pulse inputs share a common line within the same module.
*2 Depends on module types.
Max. 500 ms/300 Channel High Speed Measurement (expandable model)
Parallel processing of data is used by the dedicated A/D converter inside each input module. 1 Mbps high speed data transfer is accomplished between the main unit and each subunit. Furthermore, the use of a distributed multi-CPU control method for the overall system achieves high speed measurement of data from 300 channels over an interval of 500 ms (the stand-alone model can measure data at the rate of 40 channels/500 ms). The DA100 has a time axis resolution four times that of the previous model (DA2500E), achieving better time synchronization between channels.
Space Saving due to Compact Design
The use of high breakdown voltage solid state relays and a planar transformer developed by YOKOGAWA has enabled the volume of the 60-point input measurement section to be reduced to 1/5* that of previous models. This makes for more efficient use of control room or laboratory space and reduces total costs.
This saves space and reduces costs, for example, for panel instrumentation.
A Variety of PC Interfaces
GP-IB, RS-232C, RS-422A/485 and Ethernet 10 BASE-T general-purpose interface modules are available, enabling measured data to be transferred to a PC on a real-time basis.
Miniaturization
The size of the data acquisition engine has been reduced drastically to just one-fifth of the conventional size (Yokogawa products) by redeveloping key components. A good example is the revolutionary integrated planar transformer, developed by Yokogawa, which eliminates the windings of transformers by adopting multi-layer, high precision, thin-film coils. These make the transformer more compact and higher performance. A second example is the surface-mounted solid-state relay (SSR), the power consumption of which has been reduced by improving the high breakdown voltage SSR, which has been proven reliable by use in millions of channels.
Excellent Environmental Adaptability
The operating temperature of the base modules including input modules, power supply and communication control section ranges from -10°C to 60°C. In response to such diverse uses as for instruments in cars, DC-driven versions have been developed which are rugged and durable.
Reasonable Cost
- Wiring saving by remote measurement function
- Space and instrumentation cost reduction through miniaturization.
- Built-in signal converter allows direct input from sensors.
- Lower initial investment because no engineering required.
- Efficient, multi-channel data acquisition.
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- PC-friendly
The PC based data acquisition environment can be easily configured.
- Economical Excellence
The DA100 units are small and light. A DA100 configuration can additionally greatly reduce the amount of wiring needed, particularly for remote measurements reducing costs.
- Highly Functional Expandability
The DA100 can be flexibly configured and expanded to meet a wide range of needs, from small scale data logging to multi-point data acquisition. The data acquisition hardware accepts a wide variety of inputs including: voltage, temperature (thermocouple, RTD), contact, strain, pulse power monitor and direct current (mA) signals.
- High Reliability and Environmental Durability
The data acquisition components are made to be highly reliable in extreme environmental conditions
- High Speed Measurement
A expandable model configuration can provide a scanning speed of 500 ms/300 channels.
- Expandability
The modular construction allows you to increase or change the number of I/O points easily, at the job site. You can progressively increase the number of measurement points and measurement items, enabling you to optimize your system, while significantly
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The DA100 is a member of the DARWIN acquisition family. It is uniquely suitable for compactly configuring a data acquisition environment using a PC as a human interface. The DA100 is available in two versions,
a stand-alone model that can acquire data from up to 40 channels, and an expandable model with a maximum of 300 channels. Both models transfer your measured variables of temperature, flow rates, strain, etc in realtime to a PC via a general purpose communications interface (RS-232-C, RS-422A/RS-485, GP-IB, or Ethernet).
The name "DARWIN" stands for Data Acquisition and Recording Windows. The equipment is modularized, with the data acquisition engine as the heart of the measurement system, which converts analog signals to digital signals. The series uses various "Window = interfaces", so that the data acquisition environment can be freely configured to ensure expandability; there are no black-box type restrictions. The series is designed to overcome conventional problems and to offer a flexible response to changes in the environment. This ability to evolve with the times makes the series a new standard for data acquisition equipment. |
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The DA100 stand-alone model occupies little space, and is suitable for small scale data logging. It can be carried about easily. Connect 10 to 40 channels of input modules, as well as one general purpose communication module and 10-channel alarm output modules, directly to the main unit. A combined total of up to five input and output modules can be connected.
- You cannot connect a stand-alone unit to a subunit. If expansion above 40 inputs is a possibility, consider the DA100 expandable model.
- Measurement interval: 500 ms / 40 ch minimum.
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The DA100 expandable model consists of the main unit, subunits and input modules. You can easily configure a multi-channel data acquisition environment by connecting the main unit to several subunits using dedicated cables. You can connect the main unit to subunits over a total distance of up to 500 m using a single dedicated cable, thus reducing the amount of wiring required to perform remote measurement.
- The number of input channels can be increased from 10 to 300 channels in 10-channel increments.
- Measurement interval: As fast as 500 ms.
- Up to six subunits can be connected to one main unit, and up to six input and/or output modules can be connected to each subunit. Subunits can be separated from the main unit by up to 500 m total system cable length.
- Main Unit (DA100-2, for the DA100 expandable model) The main unit acquires data measured by input modules installed on a subunit, and transfers it to a PC in realtime via a general purpose communications module. You can also connect one communications module and up to three alarm modules to the main unit. You cannot connect an input module directly to the main unit.
- Subunit (DS400 or DS600, for DA100 expandable model) A subunit acts as an interface for connecting the main unit of the DA100 expandable model to one or several input modules. There are two types of subunits, the DS400 which permits connection of up to four input and output modules, and the DS600 which permits connection of up to six input and output modules.
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The main unit of the DA100 with optional MATH feature can perform the four arithmetic operations, integration of measured data, and computations such as detection of maximum and minimum values, in realtime. Even without the optional feature, the DA100 can compute linear scaling, difference and moving average. The results of such computations are transferred with the measured data to a PC, thus reducing the system requirements on the PC and also resulting in more efficient analytical processing. The number of computing channels with the MATH option is 30 for the stand-alone model, and 60 for the expandable model. The main computing functions are as follows (the shortest computation period differs depending upon the kind of computation).
- Standard computing functions:
Linear scaling, moving average, differential calculation, pulse integration (when a pulse input module is recognized).
- Optional functions:
The four arithmetic operations, logic operations, related operations, calculation of absolute and relative values, and statistical calculations (maximum, minimum, mean, and integrated values for fixed intervals)
- Batch Integration
By using the DA100 in combination with the optional DI/DO module or alarm function, you can easily perform batch processing.
- Moving Average Function
This function renews the measured value while calculating the moving average, effectively monitoring the trend of a varying input signal over a long period. It is also usable as a digital filter when noise components are present on the input signal. You can set the number of moving average scans by selecting a value between 2 and 64.
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A New Addition to the Module Family:
The Retransmission Output Module is used to convert values into 1-to-5 V analog voltage or 4-to-20 mA analog current and retransmit the result. Those values can be measured or computed with the DARWIN Series or specified via the communication interface from a PC.
The input module is a 10-channel*1 small remote multiplexer that A/D-converts the measured signals minimum of every 500 ms.*2 The input signals include not only DC voltage and temperature, but also contact, power monitor, pulse, strain and DCA(mA) signals.
- * Power monitor modules are 2 or 6-channel.
- * If input modules of different measurement intervals are mixed, the resulting measurement interval is that of the longest interval input modules. 10 channel universal input model (screw)
- Universal Input Module
The universal input module permits measurement of DC voltages between 20 mV and 50 V, thermocouple inputs, RTD inputs, and contact signals in up to 500 ms intervals.
- Other cost-effective universal input modules are available that measure data from 20 or 30 channels in 2-second intervals, and low-cost dedicated input modules that accept voltages and thermocouple outputs.
- Power monitor Module
The Power monitor module receives AC voltage or current input signals and measures RMS values, active power, apparent power, reactive power, frequency, power factor and phase angle.
The maximum measurement interval (data update cycle) is 2 seconds.
- Pulse Input Module
The pulse input module receives TTL or contact signals from a flow or tachometer, and counts and integrates the number of pulses. The maximum measurement interval is 0.5 second and the data update cycle is one second.
- Strain Measurement Module
The strain measurement module measures static strain, and comes in two types. One corporates a 120 or 350 ohms bridge resistor, the other is for connecting an external bridge box. One module enables data in 10 ch to be measured, however it requires two slots worth of space. The minimum measurement interval (data update cycle) is 500 ms.
- Direct Current (mA) Module
The shunt resistor (100 ohms) is pre-installed to measure the DCA signal.
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This is the base which performs the role of an intermediate interface for connecting small I/O modules to the DARWIN acquisition main units.Up to six subunits, each of which can contain a maximum of six I/O modules, can be used with one main unit. In addition, a dedicated bus cable enables the main unit of the system to be connected to each subunit over a total cable length of up to 500 m. This ensures great design flexibility, and makes wiring for remote measurement more efficient and less costly.
- Small Input Modules
Miniature 10-channel multiplexers convert analog measurement signals into digital form every 500 ms. Input modules for up to 30 channels can be installed directly on the back of the DR recorders, or up to 300 channels can be installed on remote scanner subunits for the DARWIN main units.These small input modules each contain A/D converters, permitting a measurement interval of 500 ms for up to 300 channels for each main unit. In addition, the multiplexer section uses our unique high voltage solid state relay, achieving significant miniaturization, as well as ensuring high reliability and excellent environmental adaptability. A large variety of modules are available.
- Alarm output modules
This is a 4-channel or 10-channel output module which outputs contact alarm signals according to preset conditions. You can set four alarm levels per channel (choose from upper limit, lower limit, delta high limit, delta low limit, or rate-of-change). You can install alarm output modules on the subunits.
- General purpose communications module
You can connect a GP-IB, RS-232C or RS-422A/RS-485 general purpose communications module to the back panel of the main unit. All measured data is transferred in real time via the installed communications module.
- DI/DO module
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