DA100数据采集系统 （已停产）

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°C 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.

Computing Functions (some are optional)

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