DR230 Hybrid Recorder (DISCONTINUED)

Notice: This product was discontinued on

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.

  • 10 to 30 isolated inputs
  • Measurement interval: As low as 2.0 sec.
  • Flexible inputs: DC Voltage, Thermocouples, RTDs, mAmps, AC Voltage/Current, Strain, Pulse
  • Multi-point recorder and data logger in one instrument
  • Optional FDD
  • Optional Features: Alarm outputs, DI/DO, computer interface (RS-232, GPIB, RS-422/485), math functions, report functions
  • Computer control software available

DR230 Stand-Alone Model

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.

Tm Dr230 06

Simple Integrated Construction

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 and Power Monitor Range

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. 

A variety of options, including general-purpose communications and DI/DO functions are available.

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. 

DR230 Technology

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. 

Advanced carriage drive

The carriage drive section of the dot printer head employs a screw shaft which is unique for a strip chart recorder. The drive belt and wire cable have been removed, resulting in increased reliability.

Integration of the design, manufacture and quality evaluation system

Routine installation work is automated, preventing careless mistakes during the production process from assembly through inspection. The result is a high grade, highly reliable product.
We also use precision test equipment on the production line to further increase reliability.

The DR230 provides many economic benefits for the user, such as reduced wiring for remote measurement, space saving due to compact design, and optimized signal conversion costs due to the availability of a large variety of input modules.
In addition, it provides superb environmental ruggedness, and onboard computation and memory functions, enabling it to be used for a wide range of applications.

Complete channel isolation and high-voltage measurement

Channels at the input circuit are fully isolated with high-voltage solid-state relays.*1 The DR230 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.

Superb environmental ruggedness

Every effort has been made in the design of the DR230 to reduce power consumption, thereby minimizing temperature rise. As a result, the subunits can be operated over an ambient temperture range of -10 to 60 degreea C. It can also withstand severe conditions encoutered in the field. 

Space saving due to compact design

The depth of the main unit of the DR230 hybrid recorder has been greatly reduced: It is about 60%*¹ of previous models in the case of the 60-channel model, and about 80%*² in the case of the 30-channel general-purpose model. Also, 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 remote measurement section to be reduced to 1/5*³ of that of previous models, resulting in a highly compact unit. The mass of the unit has also been reduced to about 1/2*¹. This makes for more efficient use of control room or laboratory space and reduces toal costs.

Hybrid Recording Functions

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.

  • High Speed Recording at a 2-second Interval
  • Programable Ten-Color Recording
  • Versatile Recording Formats Analog trends
    Records clearly in 10 colors. You can assign the recording color to each channel.
  1. Analog Trends
  2. Records clearly in 10 colors. You can assign the recording color to each channel.
  3. Digital recording
  4. Measured values are recorded digitally either an interval based on the chart speed, or at your specified interval. You can also start the recording of data by a remote contact input.
  5. Manual recording
  6. By pressing a key, analog recording can be interrupted and one scan's measured values recorded digitally.
  7. Alarm printout
  8. A change in the alarm status (ON/OFF state and time, for each channel) is printed out.
  9. Scale printout
  10. The recording scale is printed out for each channel.
  11. Message printout
  12. The contents of a preset message are printed out by pressing a key, contact closure on a remote control terminal, or when an alarm is detected. You can preset up to five messages of 16 characters each.
  13. Header printout
  14. Headers are printed as comments (five rows of 80 characters) for experiments or process monitoring.
  15. Printing channel No. and tag No.
  16. The channel number or tag are printed periodically.

Computing Functions

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).

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

Tm Dr230 03

By using the DR230 in combination with the optional DI/DO module or alarm function, you can easily perform batch processing.

Report Function

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.

Memory function

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 DR230 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

Save modes
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).

Other functions

Function Description
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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