Name: DR231 (DISCONTINUED)
Brand: Yokogawa
SKU: dr231

Does the chart paper that comes standard with the DR230 have a time band of 10 mm or 25 mm?

(ns-faq-darwin-8044-spec)

The DR230 is part number B9627AY (25 mm). The DR130 is part number B96855AY (10 mm).

What is the recording lifespan of the DR241 (30 ch) ink ribbon?

(ns-faq-darwin-8043-spec)

For analog trend mode + digital printing, chart speed of 25 mm/h, and a scan interval of Auto, it is approximately 6 months. In logging mode with a recording interval of 1 hr, it is approximately 2 months. This is the same for the DR231 ...

What is the type and lifespan of the battery that retains the DR240 main unit settings?

(ns-faq-darwin-8045-spec)

It is a lithium battery with a 10 year life (at an ambient temperature of 23°C, under normal operating conditions).

What are the allowable voltage between channels and common mode voltage when connecting batteries (5 V or less) in series and measuring voltage at both poles of each battery on the DR232?

(ns-faq-darwin-8046-spec)

The following voltages can be applied. Ground potential: 350 VDC (common mode noise voltage 250 VACrms × 1.1414). Between ch: 200 VDC (max. noise voltage between channels 150 Vrms × 1.1414). Between channels means the voltage between chan...

How long would it take to copy multiple data files in the DR series' RAM (512 KB) to a floppy disk?

(ns-faq-darwin-8034-spec)

It takes approximately 70 seconds to copy the data in RAM (512 KB) to a floppy disk.

With logging recording on the DR232 and DR242, what is the maximum number of channels I can use if the logging interval is set to 1 minute?

(ns-faq-darwin-8041-spec)

The maximum number of channels is 145 when channel numbers are set, and 87 when tag numbers are set. ＜Conditions＞ Logging interval = 1 min., single loop mode Alarm setting: None, MATH setting: None (both standard and MATH option disabled) The l...

When I try to change the range on the DR230 hybrid recorder, error code 123 "Attempted to make settings which are not allowed to be made during saving or reading of measured data" appears.

(ns-faq-darwin-8064-setting)

Check the DR230's main screen to see if RECORD, C, M, or T light up or appear. If any of them light up or appear, stop those operations. RECORD: Stop recording. C: Stop computation. Press the FUNC key, then select MATH STOP. M or T: Stop saving t...

If I'm doing manual printing on the DR, is the data printed out at the moment it is triggered (including for key operation)?

(ns-faq-darwin-8036-spec)

The current data is not necessarily printed when the manual printout is started. With data that is manually printed, 1 scan's worth of data is held every scan. When a manual printout is requested, that 1 scan's worth of data is sent, and prin...

How can I clear DR digital printout (including the date)?

(ns-faq-darwin-8035-setting)

You can set digital printout for each channel. If you turn digital printout of all channels OFF, digital printout stops, including the date.

After loading data to floppy disk, if I reopen it, the date and time I reopen it is recorded. Can I record the date/time of measurement?

(ns-faq-darwin-8040-spec)

Data loaded onto floppies also includes the date/time of measurement, but when you reopen it, the date/time of reopening is recorded.

I can't set the data length for loading data into memory on the DR.

(ns-faq-darwin-8037-spec)

When creating a data file in memory (512 KB RAM), files are added without overwriting until the memory is full. Therefore if the set data length is longer than the remaining memory, the setting can no longer be entered. Check the amount of memory whe...

When does the DR scale printout occur?

(ns-faq-darwin-8038-spec)

The DR's scale printout format can be selected for each channel as OFF, ON1, ON2, or ON3 (OFF means no printing). Also, the DR can accept mixed input, so the scale printout for each channel might differ. If so, the scale is printed out starting f...

Can I record all data if the scan interval on the DR is 0.5 seconds?

(ns-faq-darwin-8039-spec)

No. The DR's recording interval is 2 seconds. If the scan interval is 0.5 seconds, 3 data measured from one recording to the next would be thinned. If 1 second, 1 data would be left out.

What is the stipulated current value of the DCV/TC input module?

(ns-faq-darwin-8054-spec)

There is no strict specification for the input current value of DCV/TC INPUT, but the current value can be determined from the following specification. DCV/TC INPUT specification Max input voltage: V 2 VDC range, thermocouple, RTD: ±10...

Can I forcibly turn the alarm output modules ON/OFF from a PC regardless of any input data alarms?

(ns-faq-darwin-8055-spec)

You can, starting with style 8 of the DA. Setting command: VS. Control execute command: VD. The DR and DC do not support this. With DAQ32 and DAQ32Plus you can set up output relays, but you can't actually operate them with commands. You can also ...

What internal processing occurs of the DI input (non-voltage contact input) from the universal input module and DCV/TC/DI modules?

(ns-faq-darwin-8050-spec)

The voltage generated when a burnout current of 4.2 mA flows to the measuring terminal circuit is measured in the 60 mV range, and a determination is made. If 42 mV (10 kΩ) or more, the result is 0 (open). If less than that, 1 (closed).

When I add a module and configure the system, are the settings initialized?

(ns-faq-darwin-8058-spec)

Generally they are not initialized if the modules are not different from the previous system. However, initialization happens if slots are in the following conditions. Slot replaced with a module of a different model name or style number Slot who...

What is the temperature measurement interval of the universal module's RJC (INT)?

(ns-faq-darwin-8051-spec)

For 0.5 second models, temperature is measured for RJC every 2.5 seconds (with a 0.5 second scan, since the time for processing temperature measurement, burnout, and other factors is too short, measurement occurs every 5 cycles). For 2.0 second mode...

Is there a limit on the extender modules?

(ns-faq-darwin-8052-select)

Extender modules can be connected to the main unit (DA100-1) and subunit (DS400, DS600). However, only 1 extender module can be connected to each. Total cable length: expansion cable (max. 500 m) + extender cable (max. 30 m). Even if using an extende...

When the counter is up, does it go back to zero?

(ns-faq-darwin-8061-spec)

Unless you set the counter to go back to zero with the SETUP function, an overflow results.

When loading data on a PC via RS-232C communication, is a horizontal parity check performed?

(ns-faq-darwin-8047-spec)

No, on DARWIN, only a vertical parity check is performed.

I’m trying communication from a RS232C communication module (DT300-31) to a recorder using DAQ32 software, but *E0401 Communication error* is displayed and communication fails.

(ns-faq-darwin-8068-connect)

On the RS232C communication module, set communication parameters by using the dip switches on the front of the module. Make sure the communication module’s dip switches match what is displayed on the DAQ32's “Environment, diagnosis, a...

When the measurement mode is 20 k and the gauge method is 4 gauge, the range is －5000 µε to +5000 µε(microstrain), but I can measure up to ±20000 µε. What is the accuracy?

(ns-faq-darwin-8062-spec)

The range of the strain input module depends on the measurement mode and gauge method. (see the table below) Meausrement mode 2K 20K 200K 1 gauge method －2000 to ＋2000µε －20000 to ＋20000µε...

Is the integral value on the input pulse module the calculated scale value?

(ns-faq-darwin-8060-spec)

Yes. The integral value is the scale calculation.

I'm using a previously delivered DARWIN, but can I use an Ethernet module that supports a new style?

(ns-faq-darwin-8059-spec)

This requires upgrading the DARWIN hardware style. Please submit for factory rework.

What does the specification, "Signal supply rating 15 VDC, 30 mA" mean?

(ns-faq-darwin-8008-spec)

The input types are non-voltage contact and open collector. Hence, it is not necessary to input a voltage to pulse input. This specification shows the withstand voltage and current capacity determined for contacts or transducers. In other words, a co...

What is the difference between RELATIVE and ABSOLUTE in the timer settings?

(ns-faq-darwin-8006-spec)

RELATIVE: Count begins from the moment the timer time is set, and timeup occurs when a set time is reached. For example, if timer 1 is currently at 7 days/10 hours/00 minutes, and you set 01 days/10 hours/00 minutes, the timeup occurs every...

I do a burnout with the burnout setting command (XB) and set +OVER, but even when one side of the thermocouple is open the burnout check doesn't work.

(ns-faq-darwin-8005-spec)

After entering Setup mode settings (including burnout), you have to store the settings using the XE command. If you don't send the XE command, the settings are ignored.

When outputting measured data, what happens if I specify channels not identified by the FM command?

(ns-faq-darwin-8002-spec)

If you specify unidentified channels, no errors occur but the channels are ignored.

How many digits are displayed after the decimal point when applying a moving average?

(ns-faq-darwin-8001-spec)

When applying a moving average, the decimal places matches the number of digits in the range.

What are the burnout determination criteria (just for thermocouples)?

(ns-faq-darwin-8007-spec)

4.2 µA flows from a burnout power supply, resistance is measured, and the determination is made. : Thermocouple is normal: Less than 10 KΩ Thermocouple breaks, and while it is breaking: 10 KΩ or more

What do "initial balancing" (EXEC) and "initialization" (INIT) of the strain input channels mean?

(ns-faq-darwin-8010-term)

When measuring strain with initial balancing (EXEC), measurement is performed using the state with the gauge connected as a reference criterion. Therefore, you must balance the bridge with the gauge connected. This balancing is called initi...

Can I connect the main unit to a company network?

(ns-faq-darwin-8019-connect)

Yes. Set the IP address, subnet mask, and default gateway on the main unit.

When I changed to Windows 7, I couldn't change the IP address of the Darwin Ethernet module. What should I do?

(ns-faq-darwin-8018-setting)

DAQ32 (DP120) or DAQWORX DAQ32 Plus (WX102) installed on Windows 7 or Windows Vista cannot change the IP address of DARWIN series Ethernet modules (suffix code /C7) or DARWIN series standalone models with the Ethernet communications option (model cod...

Does DARWIN support Windows XP?

(ns-faq-darwin-8017-spec)

R10.03 and later support Windows XP.

When measuring voltage with a universal input module or DCV/TC input module, what is the limit value where an overrange occurs?

(ns-faq-darwin-8029-spec)

For voltage measurement, if 5% of range + range span is exceeded, an overrange occurs (±32767 is output). For temperature range, the +10°C measuring range is the upper limit. Ex) For the ±50 V range (span of -50 to +50), the upper l...

Why aren't thermocouples included in certificates of results?

(ns-faq-darwin-8014-other)

Thermocouple data is generally not included with our digital devices. The accuracy of data measured with thermocouples is the combined accuracies of: the thermocouple itself; the temperature compensator; the linearization that approximates the thermo...

When I acquire DI input with the BFD32 and perform statistical computation (averaging) on the Viewer software, I get computation errors 0 and 1.

(ns-faq-darwin-8004-spec)

The Viewer cannot determine the numbers after the decimal with statistical computation on DI input. Data acquired and results computed by the BFD32 are affected by the decimal of the specified measurement range. For DI (contact input), a 4.2 µA...

DR231 (DISCONTINUED)

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