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330-668-1444Model DI-188
Data Acquisition USB DAQ and Data Logger System, 12-bit, up to 8,000 S/s thourouput rate
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- Includes a DI-188 instrument, a USB-C cable, a screwdriver for signal connections, and free downloadable WinDaq software. Windows 10 or higher is required
- No programming needed when using WinDaq software!
- Low-cost, Compact USB Data Acquisition Starter Kit
- Four ±10 V Differential Analog Inputs, protected to ±30 V
- Max 4 Khz sampling throughput rates
- Optional I2C Grove interface port at extra cost
- Does this product have enough resolution for your application? Find out with our ADC Resolution Calculator
- Open source for easy expansion (Temperature, Accelerometer and Air Pressure examples available)
- Submit a support ticket to discuss your application, and you may get one at 50% discount!
- Upgradable via Arduino IDE
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Description
DI-188 USB Data Acquisition starter kit with downloadable WinDaq software. Featuring four differential analog input channels, 12-bit measurement resolution and a fixed ±10V full scale measurement range. Sample rates as slow as 0.1 Hz and as fast as 8 kHz (with a single channel enabled) are supported. No programming needed when using WinDaq software!
Suitable for preamplified analog voltage measurements, the DI-188 (with included WinDaq software) allows for real time data acquisition, playback, and analysis, with performance equal to or better than comparable products in the same price category. Built on an Arduino® compatible module, the DI-188 begins a new chapter, with a fully open source firmware and protocol allowing for easy expansion. DI-188 is by far the most Arduino® community friendly, value-oriented starter kit ever.
DIY Projects
Started with DI-188's open source firmware, one can easily add extra sensors and features to the data stream. Here are a few:.
- jAmaSeis seismological study for school projects provided by EarthScope Consortium
- Add accelerometer to data logging (16/8/4/2G)
- Add temperature and humidity sensor to data logging (0 to 50C+/-2C, 20 to 90%RH+/-5%)
- Add barometer air pressure and temperature sensor to data logging (-40 to 85C +/-0.5C, 300 to 1200hPa +/-1hPa)
- High speed logger (throughput rate 10K s/s, lower resolution)
- High resolution logger (14-bit resolution, lower sample rate)
Accessories
Description
250 Ω ±0.1% Precision, Metal Film, 1/2W, Axial Resistor
Exceptionally low noise; typically 0.10 μV/V
Low voltage coefficient to ±5 ppm/V
Flame retardant coating. RoHS
compliant. Learn More
Description
Ferrite choke reduces interference for USB-based data acquisition products.
Description
AC Adapter for Sensor Excitation.: AC input: 100V-240V. DC output: 5V 2A. Cable length: 2.95ft. DC plug connector size: 5.5x2.5mm. Includes screw terminal connector.
Description
Pressure sensor measures PSI ranges of 0-30 up to 0-500 PSI dependant on model. Requires seperate 5V power supply. Made with 316 stainless steel and high temperature auto-graded plastic. 2% Accuracy. 0.5V – 4.5V linear voltage output.
Description
AC Adapter for Sensor (such as 4-20mA) Excitation. Input: AC 100V-240V 50/60Hz; Output: 12V, 2A. Power Cable Length: 36.6 inch (0.9m).
Description
2000361-HX 4-20mA Output High precision pressure sensor measures PSI ranges of -14.5 to 10000 PSI dependant on model. 8-30V supply voltagle, such as a car battery. Made with 316 stainless steel and high temperature auto-graded plastic. 0.5% accuracy. 4-20mA linear current output. 10% Educational Discount
Software
WinDaq
Data Acquisition Recording and Playback Software
Included FREE with your DI-188 purchase. Installs WinDaq recording and playback software.
WinDaq Add-ons and Utilities
Library
Library of add-on packages for WinDaq Software, such as live XY plot, FFT, Spectrogram, Meter, Gauge, Alarm, etc.
Frequently Asked Questions
Can I save data in Microsoft Excel format?
Data can be streamed to Microsoft Excel using WinDaq/XL. Data can also be exported to Excel after acquisition using WinDaq Waveform Browser. See How to Import Recorded Data to Excel.
Can I program it under Matlab?
See our Matlab example on github.
Can I record 4-20mA sensor signals and if so, how do I do that?
4-20-mA process current signals can be measured with the DI-188. See How to make 4-20mA current Loop Measurements for more information.
Does the device have internal memory (i.e. can I record in stand-alone mode)?
The DI-188 stores acquired data to a connected PC using either WinDaq Acquisition software or by writing your own program. The device does not have hardware to store data to internal memory or removable memory. The nearest device that can is the DI-2108.
Can I connect and measure data from a single-ended sensor?
Yes. Single-ended sensors can be connected and measured. The best practice is to connect the ground wire to the negative input of the channel.
Can I measure Thermocouple temperatures?
Thermcouple temperature measurements would not be accurate at all using the DI-188 and should not be attempted. Thermocouple measurements are in the 50mV to 100mV range. With a 12-bit ADC converter and a full scale range of ±10V makes the DI-188 very ineffective. Thermocouple measurements are also non-linear and require special programming to provide accurate readings.
Is software included with the device?
WinDaq Data Acquisition and Playback Software is included free.
Where do I download the software?
Download software at https://www.dataq.com/support/downloads/DATAQ-Software-Suite-Web-Setup.exe.
Can I get the DI-188 calibrated?
Calibration service is not offered for the DI-188. If you wish to calibrate it yourself, please use this calibration utility. Consider the DI-2108 if NIST traceability is required.
Can I program this device?
Built on an Arduino® compatible module with rich resource from Arduino® community, the Open Source firmware of the DI-188 allows users to expand its functionality. View our GitHub page for example programs.
Is my sensor compatible with this device?
Maybe. Sensors with an output within the range of ±10 Volts can be used with the DI-188. See how fine a measurement you can make with your sensor using the ADC Resolution Calculator. If you have any questions about compatibility just send your sensor information to our sales team at sales@dataq.com.
Specifications
| Analog Inputs | |
| Number of Channels: | 4 |
| Configuration: | Differential |
| Full Scale Range: | ±10 V full scale fixed |
| Input impedance: | 1MΩ |
| Isolation: | none |
| Absolute maximum input without damage: | ±30 V peak |
| System noise: | 7.8 mV rms |
| Maximum common mode + differential voltage: | ± 10 V |
| Common mode rejection ratio: | 40 dB (dc - 60 Hz) |
| Channel-to-channel crosstalk rejection: | -70 dB |
| Typical Accuracy: | ±50 mV @ 25°C, excluding common mode error If you wish to have more accurate readings, please use this calibration utility |
| Power | |
| Power Consumption: | <0.2 Watt, via USB interface |
| ADC Characteristics | |
| Resolution: | 12-bit |
| Above zero ADC counts: | 2,047 |
| Below zero ADC counts: | 2,048 |
| Maximum sample rate per channel: | 8 kHz, 1 enabled channel 4 kHz, 2 enabled channels 2 kHz, 4 enabled channels |
| Minimum sample throughput: | 0.02 Hz |
| Indicators and Connections | |
| Interface: | USB-C |
| Indicator lights: | 4 LEDs on Arduino® compatible module |
| Input Connections: | One 8-position terminal strip |
| Environmental | |
| Operating Temperature: | 0 to 50 °C |
| Operating Humidity: | 0 to 90% RH non-condensing |
| Storage Temperature: | -20 to 60 °C |
| Storage Humidity: | 0 to 90% non-condensing |
| Physical Characteristics | |
| Dimensions: | 2.0D × 2.5W × 0.55H in. (5.08D × 6.35W × 1.40H cm.) |
| Weight: | 0.8 oz. |
| Software Support | |
| WinDaq software: | Driver less for Windows 10 and higher |
| Programming: | Open source firmware |
Articles
Intelligent Oversampling Methods Extend Measurement Flexibility
4-20mA Current Loop Data Acquisition
4-20 mA Measurement Resolution
Active USB Extension Cables Limit Data Loss
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Quick Product Comparison
| Model (DI-) |
Analog channels |
Measurement Range |
Expansion with other models (DI-) |
Max Sample Rate (Hz) |
Low-pass Filter |
ADC Resolution |
Digital I/O |
Stand-alone Capability |
Counter Channel |
Rate Channel |
| 188 | 4 | ±10 V | - | 8,000 | - | 12 | - | - | - | - | 1100 | 4 | ±10 V | - | 40,000 | - | 12 | 2 In | - | - | - |
| 2108 | 4 or 8 | ±10 V | - | 160,000 | Yes | 14 | 7 Bi | Yes | Yes | Yes |
| 2108-P | 4 or 8 | B† | 2108-P | 160,000 | - | 16 | 7 Bi | Yes | Yes | Yes |
| 4108 | 4 or 8 | C† | 4108, 4208, 4718B, 4730 | 160,000 | Yes | 12-16 | 7 Bi | Yes | Yes | Yes |
| 4208 | 4 or 8 | A† | 4208, 4108, 4718B, 4730 | 160,000 | Yes | 12-16 | 7 Bi | Yes | Yes | Yes |
*Expand with ChannelStretch™. Compatibility with other units dependent on model.
†Use the following chart to determine Measurement Ranges:
| A | B | C |
| ±2 V ±5 V ±10 V ±20 V ±50 V ±100 V |
±2.5 V ±5 V ±10 V 0-5 V 0-10 V |
±200 mV ±500 mV ±1 V ±2 V ±5 V ±10 V |