The DR230 is a stand-alone model which has an integrated input, output and recording section and a maximum capacity of 30 channels.
The DR230 model uses input modules which can be easily expanded from 10 to 30 channels in 10 channel increments. Alarm output modules are also available. The input and output sections of the expandable model are modularized, enabling you to freely configure the optimum data acquisition environment.
This highly reliable, expandable and economical unit was developed as the next generation hybrid recorder. It also meets a wide range of needs frosmall scale data logging to multi-point data acquisition.
|This model has a simple building block architecture, and comes with I/O and communications module installed on the back of the main unit. You specify 10, 20 or 30 input channels, and desired options, at the time of order.|| |
You can connect 10, 20 or 30 channels directly to the main unit. The DR230 stand-alone model, which comes with I/O modules already installed, is a high cost performance general-purpose model.
The external appearance, recorder function, memory and communications functions of this model are identical to those of the expandable model. Because this model is of integrated construction, it can be carried about easily.
Universal input type permit measurement of a variety of inputs including DC voltage, thermocouple, RTD and contact signals.
Low cost type intended specifically for measuring voltage and thermocouple signals are available. You can also select power monitor (optional) for measuring AC voltage and current.
General-purpose communications (GP-IB, RS-232C, RS-422A/485 and Ethernet), 10 form C alarm output relays, DI/DO (2 alarm relays, remote control of recorder, CPU fail and chart end contacts).
Specify your required options when ordering.
The history of Yokogawa in strip chart recording instruments can be summarized by its providing the most reliable and readable recorders, with unmatched performance, over the last fifteen years. In 1981, Yokogawa developed the Model 3088 hybrid recorder which was the first dot printing type recorder in the world to contain a microprocessor. Since then, we have continued to make many technical breakthroughs, including the non-contact ultrasonic position detector, and high breakdown voltage (HBV) solid state relay, continuing to advance what you can achieve in multipoint recording closer to your ideal.Many of these innovations can be found in the DR230.
A recorder's performance is measured by the readability of the information on its printed chart. The DR230 can record clearly, in 10 colors, data from all measurement points, at a 2-second interval. It has a wide variety of recording functions including analog trend recording over an effective recording width of 250 mm, recording of digital measured values, recording of various messages, zone recording, and partially compressed and expanded recording, that support the clear interpretation of data.
The main unit of the DR230 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 DR230 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).
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.
By using the DR230 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 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
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).
|Input||Integration Mode Selection||You can select the 50/60 Hz or 10 Hz integration mode. The 10 Hz integration mode is useful when power line noise containing both 50 Hz and 60 Hz components is superimposed on the signal. (When the 10 Hz integration mode is activated, the minimum measurement interval is 4 s.)|
|Low-Pass Filter||You can insert a low-pass filter in the path of a signal on which noise components are superimposed. (When the filter is ON, the minimum measurement period becomes more than 3 seconds, depending on the input types and channels.) |
|Scaling||The input signal is displayed and/or recorded as an industrial quantity or a physical quantity. |
|Burn-out||When the thermocouple input goes open circuit, the indicator moves to the 100% or 0% side. |
|Differential Calculation||The difference between the reference channel and measured channel is measured. |
|Record||Zone Recording||The recording area can be set freely for each channel. |
|Partially compressed and expanded recording||Unimportant parts are compressed, and only necessary parts are expanded, thus enabling the recording resolution to be increased.|
|Group Channel Trend||Unimportant parts are compressed, and only necessary parts are expanded, thus enabling the recording resolution to be increased. |
|Alarm Generation Channel Trend||Trend recording takes place only for channels that emit an alarm. |
|Setting||Memory Backup||The set data is protected by a lithium battery inside the unit. |
|Security||The unit comes with a standard password lock function, preventing mis-operation and also protecting the set data. |
|Alarm||Re-Breakdown Re-Alarm||The alarm output can be refreshed when an alarm is emitted. |
|Hold Function||Once an alarm is emitted, the alarm indication and relay state are held until the operator acknowledges the alarm. |
|Switchover between excitation and non-excitation||The alarm mode can be switched between the alarm output relay excitation/non-excitation state. |
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