DR240

The main unit of the DR240 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 DR240 can compute linear scaling, difference and moving average. The results of such computations are transferred with the measured data to a PC, thus reducing system requirements on the PC and also resulting in more efficient analytical processing.

The main computing functions are as follows. (The shortest computation period differs depending on 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)
  
  
• Moving average function
  This function renews the measured value while calculating the moving average, is effectively monitoring the trend of a varying input signal over a long period. It is also useable 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.
  
  
• Batch integration
  
  

By using the DR240 in combination with the optional DI/DO module or alarm function, you can easily perform batch processing.

You can calculate the maximum, minimum, average values, and integrated value of the measured results, and print hourly, daily and monthly reports. The calculated values are also recorded in the report results.

You can select a floppy disk function with 512 KB SRAM capability for storage of information on a removable media. You can save several configuration setups and in addition store the measured data before and after an alarm, and also calculated values.
You can record the memorized data on DR240 chart, transfer it off-line to a PC, or analyze it or make it into a report using commercially available spreadsheet software.

You can save the measured data in the following cases:
By manual command or when a communications command is input
When an alarm is detected
When the end of the chart is reached


The save modes are as follows:
Single: Data of the specified length is sampled once only.
Repeat: Data of the specified length is sampled exactly the number of times specified in advance.

*: When measured values are saved to a floppy disk, they are first stored in the buffer memory (512 KB DRAM).