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330-668-1444DI-2008XL
Excel Data Logger System for Thermocouple, Pressure, Humidity and Voltage measurement, 8 High Common Mode Isolated Analog Inputs, ±50 V, 16-bit Resolution, 200Hz, 7 D I/O
Why is high common mode important?
- Includes a DI-2008 instrument with full features, a 6-foot USB cable, a screwdriver for signal connections, an NIST-traceable calibration certificate, and downloadable ExcelLink with WinDaq software
- Included WinDaq ExcelLink is able to capture and stream data to Excel spreadsheet in real time at high speed.
- Supports both 32- and 64-bit version of Excel.
- Uses predefined Excel workbook for real time analysis and charting
- Window trigger to capture data inside or outside a range
- Slope trigger to capture data when reading crossing a point
- Event trigger to capture single row when an event happens
- Derivative trigger to trigger on rate of change, such as a glitch
- Paced Trigger to capture a single row at predefined pace
- Delayed Trigger to capture data after a predefined delay from the trigger point
- Manual trigger to capture data based on manual operation
- Advanced math to combine multiple channels in trigger condition
- ChannelStretch Included to support channel expansion operation from multiple DI-2008s
- Eight differential and isolated analog input channels.
- Seven bi-directional digital input ports, including:
- Counter input for totalizing applications
- Rate input for frequency/flow/rpm applications
- Counter input is capable to capture frequency up to 2Mhz!
- Programmable voltage and thermocouple measurements per channel
- 10 mV to 50 V in 12 steps
- Type J, K, T, B, R, S, E, N thermocouples
- High resolution (16-bit) measurements (use the Resolution Calculator to determine how small a change you can detect)
- 15V (1W) supply for 4-20mA Pressure Transducers and Humidity Sensor
- 10% Education Discount
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Description
The DI-2008XL is an Excel-oriented USB Thermocouple Data Acquisition system, featuring ExcelLink with WinDaq software for real-time data capture and streaming to Excel. It boasts 8 analog input channels programmable for thermocouples or voltage, with 16-bit resolution and a ±10mV to ±50V full-scale range. The channels support 8 thermocouple types and offer versatile measurement options.
Each analog input channel can be independently programmed for either thermocouple or voltage measurements. Voltage measurements offer twelve ranges from ±10 mV to ±50 V, with ±5 V supporting 4-20 mA measurements using a 250 Ω shunt resistor (model R250 sold separately). Thermocouple channels support eight types, with automatic linearization and junction compensation for values in °C or °F. The DI-2008XL includes a built-in 15 V sensor excitation power supply, reducing wiring complexity and overall system cost. All analog measurements benefit from a 16-bit ADC resolution for precise signal capture.
For common mode voltage challenges, the DI-2008XL provides electrical isolation for each analog input channel, ensuring safe and accurate measurements in the presence of up to 120 V rms common mode voltages.
The DI-2008XL also features 7 digital ports, configurable as inputs or switches, with 30 V input protection. Switched ports can control external loads up to 30 V @ 100 mA, allowing asynchronous control without interrupting the scanning process. Two ports offer dual functionality as discrete inputs or one as a counter and the other as a rate input, with a 50 kHz maximum measurement over twelve programmable ranges (10 Hz to 50 kHz full scale) for the rate input. The counter input provides 16-bit resolution and a terminal count value of 65,535. All digital inputs are synchronized with analog inputs, facilitating meaningful comparisons between analog and digital channels. For example, engine speed (rpm) data from the rate input can be acquired synchronously with analog data.
Trigger Excel Link
The DI-2008XL comes with WinDaq ExcelLink. It provides real-time conection to Excel spreadsheet (32- or 64-bit) and can stream data to Excel spreadsheet at high speed. Four trigger methods are provided - two-point window trigger, one-point slope trigger with pre- and post-trigger data, manual single row and block trigger, and programmable event driven single-row trigger.
Even though Excel can store over 1,000,000 rows of data, it is still a small buffer for high speed data aquisition unless trigger modes are utilized so that only data of interests is captured. ExcelLink supports advanced math to construct trigger methods. Window trigger can capture signals inside or outside a range. Slope trigger with pre- and post- trigger can capture signals before and after a predefined trigger point. Event trigger can capture a single row of data at the moment trigger conditions are met. Derivative trigger to trigger on rate of change, such as a glitch. Manual trigger can capture signals at operator's key instruction.
With data directly streaming to Excel, powerful real time analysis and many charting options are available, such as grouping multiple channels in a single chart.
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
AC/DC Current Clamp includes 9V battery and user manual. Download the DataSheet (pdf) to learn more or go to the product page.
Description
3-foot (0.91m) type K beaded wire teflon-coated thermocouple. Maximum operating temperature of 500°F (260°C) on the coating of the wires. 24-Gauge teflon wrap for use in moist atmospheres. Insulation provides a seal against liquid and vapor.
Description
12-foot (3.66m) type K beaded wire teflon-coated thermocouple. Maximum operating temperature of 500°F (260°C) on the coating of the wires. 24-Gauge teflon wrap for use in moist atmospheres. Insulation provides a seal against liquid and vapor.
Description
3-foot (0.91m) type T (best for low temperature applications) beaded wire teflon-coated thermocouple. Maximum operating temperature of 500°F (260°C) on the coating of the wires. 24-Gauge teflon wrap for use in moist atmospheres. Insulation provides a seal against liquid and vapor.
Description
12-foot (3.66m) type T (best for low temperature applications) beaded wire teflon-coated thermocouple. Maximum operating temperature of 500°F (260°C) on the coating of the wires. 24-Gauge teflon wrap for use in moist atmospheres. Insulation provides a seal against liquid and vapor.
Description
3-foot (0.91m) type J beaded wire teflon-coated thermocouple. Maximum operating temperature of 500°F (260°C) on the coating of the wires. 24-Gauge teflon wrap for use in moist atmospheres. Insulation provides a seal against liquid and vapor.
Description
12-foot (3.66m) type J beaded wire teflon-coated thermocouple. Maximum operating temperature of 500°F (260°C) on the coating of the wires. 24-Gauge teflon wrap for use in moist atmospheres. Insulation provides a seal against liquid and vapor.
Description
Custom length (over 12 feet) type K beaded wire teflon-coated thermocouple. Maximum operating temperature of 500°F (260°C) on the coating of the wires. 24-Gauge teflon wrap for use in moist atmospheres. Insulation provides a seal against liquid and vapor. Please Note: Enter quantity for length. Please allow 7-10 business days for manufacturing.
Description
Custom length (over 12 feet) type T (best for low temperature applications) beaded wire teflon-coated thermocouple. Maximum operating temperature of 500°F (260°C) on the coating of the wires. 24-Gauge teflon wrap for use in moist atmospheres. Insulation provides a seal against liquid and vapor. Please Note: Enter quantity for length. Please allow 7-10 business days for manufacturing.
Description
Custom length (over 12 feet) type J beaded wire teflon-coated thermocouple. Maximum operating temperature of 500°F (260°C) on the coating of the wires. 24-Gauge teflon wrap for use in moist atmospheres. Insulation provides a seal against liquid and vapor. Please Note: Enter quantity for length. Please allow 7-10 business days for manufacturing.
50-500mm Thermowells
8mm diameter, 50-500mm length, 1/2" MNTP, stainless thermowells with cable gland to protect your thermocouples
Description
Optional USB Cable for use with ChannelStretch™. Dual ferrite cores provide maximum protection against ground bounce that could lockup your PC's USB port during data acquisition. 20.4-inch (520 mm) overall cable length. Recommended whenever products are deployed in our ChannelStretch™ configuration.
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, compatible with DI-2008 and DI-808. Made with 316 stainless steel and high temperature auto-graded plastic. 0.5% accuracy. 4-20mA linear current output.
Description
2000361-H High precision pressure sensor measures PSI ranges of -14.5 to 10000 PSI dependant on model. Requires 101087-1 DC/DC Converter to be used with DI-808 and DI2008. Made with 316 stainless steel and high temperature auto-graded plastic. 0.5% 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
Allows you to power 5V rating sensor with a battery. Input voltage: DC8-35V, (12V/24V changes to 5V); Output parameter: DC5V 3A, 15W MAX
Description
16-ft USB Extension Cable. USB 2.0 Type A. Daisy chain up to 5 cables for extended length.
Description
Powered 7 port USB hub to synchronize multiple USB devices. Please note: Not all DATAQ Instruments devices support synchronization - check your product datasheet or product page for detailed information. Note: Provided with a US ac adaptor only, and is not suitable for use in countries that require an ac mains connector other than the US type.
Description
YF-S201 Flow Sensor Measures 1-30L/min. Light weight, small size, durable, and easy to install. Inlaid with stainless steel impeller shaft. Lowest working voltage: DC4.5 5V-24V; Max current: 15 mA (DC 5V); Max operation temp: 120°C. Learn more.
Description
Ferrite choke reduces interference for USB-based data acquisition products.
Software
WinDaq
Data Acquisition Recording and Playback Software
Included FREE with your DI-2008 purchase. Record all channels at 2,000 S/s for a single analog channel or 200 S/s for more than one analog channel. Installs drivers and WinDaq recording and playback software. Unlock code required for ChannelStretch™.
Description
Re-calibration Service, this calibration certificate is included with new instruments. NIST-traceable certificate for model DI-2008 Thermocouple and Voltage data acquisition product. Includes before and after data. Shipping charges do apply when ordering online. Learn more about Calibrating your device.
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 increase the accuracy of thermocouple readings?
To increase the accuracy of thermocouple reading, please follow this steps
Can I program it under Matlab in protocol level?
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-2008XL. See How to make 4-20mA current Loop Measurements for more information.
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?
The DI-2008 is specifically designed to measure and record thermcouple temperature measurements as well as voltage measurements.
Is the DI-2008XL Isolated?
Each DI-2008XL analog input is electrically isolated from other channels and from ground for safe and accurate measurements in the presence of common mode voltages. Channel isolation means that each analog input is free to float to an independent common mode voltage imposed upon it by the signal source up to 120 V rms, and still provide an accurate and noise-free measurement.
Is software included with the device?
WinDaq Data Acquisition and Playback Software is included free. ExcelLink is also included with DI-2008XL
Where do I download the software?
Download ExcelLink at https://dataq.com/support/downloads/WinDaq-Acquisition-Add-ons-Setup.exe.
Download WinDaq at https://www.dataq.com/support/downloads/DATAQ-Software-Suite-Web-Setup.exe.
Does the DI-2008XL include a calibration certificate?
All new DI-2008XL instruments ship with an NIST-traceable calibration certificate.
Can I get the DI-2008 re-calibrated?
Recalibration service is available and can be ordered online.
How often should I get the DI-2008 re-calibrated?
The DI-2008 should be re-calibrated annually.
Can I program this device in Python, C#, or .NET?
The published protocol of the DI-2008 is available for programming in any language. View our GitHub page for example programs.
Is my sensor compatible with this device?
Maybe. The many gain factors and voltage ranges available on the DI-2008 allow for many sensors to be compatible with the device. 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.
Does the DI-2008 include digital or analog output channels?
The DI-2008 has seven bi-directional digital ports.
My sensor requires a power source, can the DI-2008 provide that power?
Yes. The DI-2008 can provide +15V power by connecting the appropriate wire to the +15V pin. Be sure your sensor does not exceed the excitation output spec: +15 V dc (-7.5% to +2.5%) at 70% load (47 mA), 67 mA at full load.
Specifications
| Analog Inputs | ||||||||||||||||||||||||||||
| Number of Channels: | 8 | |||||||||||||||||||||||||||
| Configuration: | Differential, Isolated | |||||||||||||||||||||||||||
| Programmable measurements per channel: | Voltage, Thermocouple | |||||||||||||||||||||||||||
| Programmable thermocouple types and measurement range per channel: Over 25 ±5 °C ambient temperature range. Stable ambient temperature. Following 30 minutes warm-up. Excluding common mode error. Excluding thermocouple error. |
To increase the accuracy of thermocouple reading, please follow this steps
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| Programmable voltage measurement ranges per channel: | ±10 mV, ±25 mV, ±50 mV, ±100 mV, ±250 mV, ±500 mV, ±1 V, ±2.5 V, ±5 V, ±10 V, ±25 V, ±50 V | |||||||||||||||||||||||||||
| Voltage measurement accuracy: At 25 °C ambient temperature. Following 30 minutes warm-up. Excluding common mode error. |
±(0.05% of range + 10 µV) | |||||||||||||||||||||||||||
| Input impedance: | 1 MΩ, all ranges | |||||||||||||||||||||||||||
| Isolation: | 350Vpp, Input-to-output, Channel-to-channel | |||||||||||||||||||||||||||
| Absolute maximum input without damage: | 120 V rms | |||||||||||||||||||||||||||
| Maximum common mode voltage: | 120 V rms | |||||||||||||||||||||||||||
| Min common mode rejection (330Ω unbalance): | >100 dB (DC to 60 Hz) | |||||||||||||||||||||||||||
| Channel-to-channel crosstalk rejection: (Rsource ≤ 330 Ω; Freqsource ≤ 60 Hz) | > 100 dB at any throughput | |||||||||||||||||||||||||||
| Digital Inputs | ||||||||||||||||||||||||||||
| Number of ports: | 7 | |||||||||||||||||||||||||||
| Type: | MOSFET switch | |||||||||||||||||||||||||||
| Configuration: | Programmable as an input or switch | |||||||||||||||||||||||||||
| Pull-up value: | 4.7 KΩ | |||||||||||||||||||||||||||
| Isolation: | None | |||||||||||||||||||||||||||
| Input high voltage threshold: | 2.4 V minimum | |||||||||||||||||||||||||||
| Input low voltage threshold: | 0.8 V maximum | |||||||||||||||||||||||||||
| Absolute max input without damage: | 0 ≤ V ≤ 30 V | |||||||||||||||||||||||||||
| Count/Rate | ||||||||||||||||||||||||||||
| Digital port assignment: | Count: Port 2 configured as input Rate: Port 3 configured as input |
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| Internal pull-up value: | 4.7 kΩ | |||||||||||||||||||||||||||
| Input high voltage threshold: | 2.4 V | |||||||||||||||||||||||||||
| Input low voltage threshold: | 0.8 V | |||||||||||||||||||||||||||
| Terminal count: | 65,535 | |||||||||||||||||||||||||||
| Maximum rate frequency: | 50 kHz | |||||||||||||||||||||||||||
| Minimum rate frequency: | 0.5 Hz | |||||||||||||||||||||||||||
| Maximum count frequency: | 50 kHz | |||||||||||||||||||||||||||
| Power | ||||||||||||||||||||||||||||
| Power Consumption: | 0.75 Watts (from USB port) | |||||||||||||||||||||||||||
| Excitation output: | +15 V dc (-7.5% to +2.5%) at 70% load (47 mA), 67 mA at full load, or max three 4-20mA sensors | |||||||||||||||||||||||||||
| ADC Characteristics | ||||||||||||||||||||||||||||
| Voltage Measurement Resolution: |
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| Thermocouple Temperature Measurement Resolution: |
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| 4-20 mA current loop resolution: | 13,100 ADC counts over the 4-20 mA range (5 VFS range with 250-Ω shunt resistor) | |||||||||||||||||||||||||||
| Maximum sample throughput rate: | Single enabled channel: 2,000 S/s Two or more enabled channels: 200 S/s |
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| Minimum sample throughput (hardware): | 1 enabled analog channel: 0.000109 S/s 2 or more enabled analog channels: 0.000011 S/s |
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| Minimum sample throughput (using WinDaq): | .0001969 S/s | |||||||||||||||||||||||||||
| Sample rate timing accuracy: | 50 ppm | |||||||||||||||||||||||||||
| Indicators and Connections | ||||||||||||||||||||||||||||
| Interface: | USB 2.0 (mini-B style connector) | |||||||||||||||||||||||||||
| Indicator lights: | 3 LEDs: Power, Active, Event | |||||||||||||||||||||||||||
| Input Connections: | Two 16-position terminal strips | |||||||||||||||||||||||||||
| Pushbutton: | Manual event when used with WinDaq software | |||||||||||||||||||||||||||
| ChannelStretch™ Operation | ||||||||||||||||||||||||||||
| WinDaq software: | If any synced device has two or more enabled analog channels, all synced devices must enable the same number of analog and digital channels and the same sample throughput rate. If all synced devices have one or zero enabled analog channels, sample rate per channel must be the same across all devices. One or more digital ports configured as a discrete input counts as one digital channel. Rate and count inputs count as one digital channel each. | |||||||||||||||||||||||||||
| Programmed (.Net- or protocol-based): | Sample rate per channel must be the same across all synced devices. | |||||||||||||||||||||||||||
| Maximum number of devices: | 16 | Maximum channel count: | 128 analog, 112 digital | |||||||||||||||||||||||||
| Maximum supported throughput: | ≥480 kHz | |||||||||||||||||||||||||||
| Synchronization compatibility: | DI-2008 | |||||||||||||||||||||||||||
| PC USB prerequisite: | All instruments must be connected to the same USB controller. The use of USB hubs are recommended to meet this requirement. | |||||||||||||||||||||||||||
| Environmental | ||||||||||||||||||||||||||||
| Operating Temperature: | 0 to 70 °C | |||||||||||||||||||||||||||
| Storage Temperature: | -20 to 70 °C | |||||||||||||||||||||||||||
| Storage Humidity: | 0 to 90% non-condensing | |||||||||||||||||||||||||||
| Physical Characteristics | ||||||||||||||||||||||||||||
| Enclosure: | Hardened Plastic | |||||||||||||||||||||||||||
| Mounting: | Desktop; bulkhead | |||||||||||||||||||||||||||
| Dimensions: | 3.28D × 6.68W × 1.13H in. (83.31D × 169.67W × 28.7H mm.) | |||||||||||||||||||||||||||
| 3D Model | Click here | |||||||||||||||||||||||||||
| Weight: | 5.7 oz. (162 grams) | |||||||||||||||||||||||||||
| Software Support | ||||||||||||||||||||||||||||
| WinDaq software: | OS support | |||||||||||||||||||||||||||
| Programming: | Instrument protocol, ActiveX Control | |||||||||||||||||||||||||||
Articles
How to Acquire Flow Rate and Flow Volume using a DATAQ Data Logger
Making Parallel Thermocouple Measurements
Sub-zero Thermocouple Measurements
How To Make 4-20 mA Current Loop Measurements
Why You Need Channel-to-Channel Isolation
How To Calculate Common Mode Rejection Ratio
Intelligent Oversampling Methods Extend Measurement Flexibility
Active USB Extension Cables Limit Data Loss
Videos
Pressure Measurements
Learn how to make pressure Measurements with a pressure sensor and Dataq products.
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Quick Product Comparison
| Model | Analog channels |
Expandable* | Measurement Range |
Thermocouple Support |
Max Sample Rate (Hz) |
ADC Resolution |
Digital I/O |
Interface | Data Storage | Price |
| DI-2008 | 4 or 8 | Yes | A† | Yes | 200 | 16 | 7 Bi | USB | PC | $399 |
| DI-808 | 8 | - | A† | Yes | 40 | 16 | 4 In 4 Out | Ethernet | Internal, USB flash, Cloud | $995 |
| DI-4718B-E | 8 | - | C† | Yes (DI-8B) | 160,000 | 12 to 16 | 2 In | USB, Ethernet | PC or USB flash | $695 |
| GL240 | 10 | - | B† | Yes | 100 | 16 | 4 In 4 Out | USB, Ethernet | PC, USB flash, Internal, Cloud | $995 |
| GL840-M | 20 | Yes | B† | Yes | 100 | 16 | 4 In 4 Out | USB, Ethernet | PC, USB flash, Internal, Cloud | $2345 |
*Expansion capabilities dependent on model.
†Use the following chart to determine Measurement Ranges:
| A | B | C* |
| ±10 mV ±25 mV ±50 mV ±100 mV ±250 mV ±500 mV ±1 V ±2.5 V ±5 V ±10 V ±25 V ±50 V TC-J TC-K TC-T TC-B TC-R TC-S TC-E TC-N |
±20 mV ±50 mV ±100 mV ±200 mV ±500 mV ±1 V ±2 V ±5 V ±10 V ±20 V ±50 V ±100 V 1-5 V |
±10 mV ±50 mV ±100 mV ±1 V ±5 V ±10 V ±20 V ±40 V ±60 V |
*Dependent on 8B module.