Model DI-808
Eight-fully-isolated-channel Web-based Voltage, Thermocouple, and Pulse Data Logger
Why is isolated/high-commond mode important?
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Stock
- Includes a DI-808 instrument, a screwdriver for signal connections, a power supply, and an NIST-traceable calibration certificate
- Intelligent data logger with built-in web server works with Any device from Anywhere, Anytime
- No software to install. Test drive DI-808 by visiting one located in DATAQ!
- Stores data locally or a USB thumb drive (FAT32) and/or remotely to any accessible server or email address
- Allows remote real time display and configuration
- Eight differential and isolated analog input channels programmable as voltage or thermocouple per channel measuring from ±10mV to ±50V; 4-20mA, or Thermocouple types J, K, T, B, R, S, E, or N
- Four digital input channels programmable as count, frequency, or discrete function per channel
- Count goes up to 32-bit integer
- Counter input is capable to capture frequency up to 2Mhz!
- Four real-time discrete alarm output channels with email/text notification
- Automatic time and date stamping
- Flexible triggering selections start and stop data recording based upon
- Analog and pulse input levels
- Alarm status
- Date/time/day-of-week
- 20 programmable sampling intervals ranging from 25 mS to 1 hour
- 15V (2W) supply output for 4-20mA sensors
- 16-bit analog measurement resolution provides even the smallest changes in applied voltage and temperature
- Use HMP60 Probe for Temperature and Humidity Measurements
- Built-in Ethernet interface
- CE approved
Description
DI-808 Web-based Voltage and Thermocouple Data Logger system. Features 8 isolated analog input channels programmable as a thermocouple or voltage input, 16-bit measurement resolution, and a full scale range of ±10mV to ±50V for voltage measurements or Thermocouple types J, K, T, B, R, S, E, or N.
Model DI-808 is a giant step forward in the evolution of data logger technology toward autonomous and device-independent operation. Its built-in web server allows you to access, configure, manage, and oversee in real time all aspects of the instrument’s measurement process with Any device from Anywhere, Anytime. You stay in control at all levels, from device configuration and real time monitoring, to the acquired data with your smart phone, tablets, or PC with any OS. The DI-808’s Ethernet interface allows it to integrate with any network. And simple port forwarding exposes the instrument to the Internet, allowing remote access from any location on the planet. Test drive DI-808 by visiting one located in DATAQ!
Built around the DI-808’s web server is a powerful data logger engine that adapts to a wide range of analog and pulse measurements. Eight analog input channels feature channel-independent voltage and thermocouple configurations. Voltage measurements support ±10 mV to ±50 V measurements across twelve programmable ranges. Thermocouple configurations support J, K, T, B, R, S, E, and N types. Full channel isolation allows virtually any measurement in tough industrial environments: grounded thermocouples, powered thermocouples, off-ground current shunts, as well as unexpected and unknown ground potential differences. Complementing the analog input channels are four pulse inputs. Each can be independently programmed for simple state detection, to operate as a counter, or make a frequency measurement. Use these functions to acquire, for example, volume data from a flow sensor (count), and flow rate (frequency.) Other examples are rpm measurements or simple counting in production or product life test applications. Both analog and pulse measurements are reported synchronously in the same sampling interval, and all measurements are time-and-date-stamped. Sampling intervals are pro-grammable as often as once every 25 mS or as infrequently as once every hour, with 18 selectable intervals in between. There’s even an external option to synchronize sampling to external events.
The DI-808 also provides four alarm output channels that can be used to flag exceptions during a recording. Each discrete output can be used to signal a PLC, turn on an alarm, or otherwise used as demanded by the application. Each alarm output is also linked to the web interface, where an email alert (or text alert, if supported by your provider) can be triggered when the alarm activates.So, even though you may be miles from the instrument, you’re only a few swipes on your smart device away from real time process updates.
The DI-808 supports exceptional triggering flexibility to determine when the data logger should start and stop recording data, and when alarms should be activated. All or any subset of analog and pulse input channels can be tested, and conditions that stop and start record-ing can be entirely different. The start and stop recording processes can be a function of input levels, an alarm state, a specific date and time and day-of-the-week. Level tests support single and dual modes. Single levels support above- and below-threshold tests. Dual levels test inside or outside a trigger window. All enabled trigger conditions per analog or digital input can be combined in a selectable Boolean AND/OR function to further refine trigger definitions. So, if you want to begin recording when channel 2 exceeds 34 psi AND when channel 5 is greater than 84 but less than 127 pounds, and then stop recording at 10 pm on Sunday evening, you can do it. You can even configure the instrument to re-trigger itself automatically. Finally, when the DI-808 completes a start/stop recording cycle it can be configured to send data to one or all of five destinations ranging from local to remote servers, multiple email addresses, and even a USB drive with built-in flash memory providing transparent backup.
Test Drive DI-808 by Visiting a Server in DATAQ
A DI-808 server is setup in Dataq office for test drive. You can access it with Any device from Anywhere, Anytime using a modern web browser, Please Click Here to visit it. When prompted, please type in "user" for both user name and password. Open Channel Settings tab, and you will see the following screen. Please follow the help files to navigate around.
Note: Since a user is not an administrator, one can't change the configurations on the server.We encourage you to Submit a Support Ticket to request administrator right to change the configuration on the server to explore its features!
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
Temperature and humidity probe measures -40 to +60 °C and 0 to 100% RH. Learn more.
J, K and T Thermocouple Wires
Teflon® coated or High Temp Glassbraisd J, K and T Thermocouple Wires in various length
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, DI-4108M, DI-4208M and DI-808. Made with 316 stainless steel and high temperature auto-graded plastic. 0.5% accuracy. 4-20mA linear current output. 10% Educational Discount
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, DI-2008, DI-4108M and DI-4208M. Made with 316 stainless steel and high temperature auto-graded plastic. 0.5% accuracy. 0.5V – 4.5V linear voltage output. 10% Educational Discount
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
Replacement 16-port removable screwless push-in spring connection terminal block
Description
Replacement 16-port removable screw terminal block for TOP of screw terminal block receptacle in DI-78B, DI-710, DI-718B, DI-4718B, DI-718Bx, DI-785, DI-788, and DI-808 products.
Description
Replacement 16-port removable screw terminal block for BOTTOM of screw terminal block receptacle in DI-78B, DI-710, DI-718B, DI-4718B, DI-718Bx, DI-785, DI-788, and DI-808 products.
Description
Pair of angle mounting brackets (with mounting screws) for DI-4718 Series, DI-4108 Series, DI-4208 Series, DI-808 Series, DI-710 Series, DI-718B Series, and DI-100TC Series instruments
Description
DC power connector for powering the DI-808 or DI-4718B from a source other than the provided ac adaptor.
50-500mm Thermowells
8mm diameter, 50-500mm length, 1/2" MNTP, stainless thermowells with cable gland to protect your thermocouples
Description
Spare power supply for DI-808 and DI-4730 products.
Description
Re-calibration Service, this calibration certificate is included with new instruments. NIST-traceable certificate for model DI-808 web-based voltage and thermocouple data logger. Includes before and after data. Shipping charges do apply when ordering online. Learn more about Calibrating your device.
Description
One AC/DC Current Clamp includes 9V battery and user manual. Download the DataSheet (pdf) to learn more or go to the product page. A banana jack to wire (pair), part number 2000429, is needed to connect this to the screw terminals
Description
Banana jack to wire (six inches long), perfect for connecting ACDC-256 to screw terminals
Software
WinDaq Waveform Browser (Hi-Res)
Data Playback Software
FREE Hi-Res WinDaq Waveform Browser Playback software. Allows you to view data files recorded with WinDaq Acquisition software or the DI-808 Web-based data logger.
Advanced CODAS
$595
Advanced analysis software add-on to WinDaq Waveform Browser software. Allows calculated channels, derivative, integration, moving average, automatic file management, automatic scaling, and more.
Specifications
Analog Inputs | ||||||||||||||||||||||||||||
Number of Channels: | 8 | |||||||||||||||||||||||||||
Configuration: | Differential, Isolated | |||||||||||||||||||||||||||
Isolation: | Input-to-output, channel-to-channel | |||||||||||||||||||||||||||
Programmable measurements per channel: | Voltage, Thermocouple | |||||||||||||||||||||||||||
Programmable thermocouple types and measurement range per channel: Over 25 ±3 °C ambient temperature range. Stable ambient temperature. Following 60 minutes warm-up. Excluding common mode error. Excluding thermocouple error. |
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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 | |||||||||||||||||||||||||||
Absolute maximum input without damage: | 120 V (±dc or rms) | |||||||||||||||||||||||||||
Maximum common mode voltage: | 120 V (±dc or rms) | |||||||||||||||||||||||||||
Min common mode rejection (330Ω unbalance): | >110 dB (DC to 60 Hz) | |||||||||||||||||||||||||||
Channel-to-channel crosstalk rejection: (Rsource ≤ 330 Ω; Freqsource ≤ 60 Hz) | > 110 dB | |||||||||||||||||||||||||||
Alarm and trigger hysteresis: | Voltage: ±0.5% of the full scale range Temperature: ±0.3 °C |
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Digital/Pulse Inputs | ||||||||||||||||||||||||||||
Number of Channels: | 4 | |||||||||||||||||||||||||||
Pull-up value: | 4.7 KΩ | |||||||||||||||||||||||||||
Isolation: | None | |||||||||||||||||||||||||||
Input high voltage threshold: | 1.8 V minimum | |||||||||||||||||||||||||||
Input low voltage threshold: | 1.4 V maximum | |||||||||||||||||||||||||||
Absolute voltage input without damage: | 0 ≤ V ≤ 30 V | |||||||||||||||||||||||||||
Maximum count value: | 232 - 1 (.csv format) 65,535 (WinDaq format) |
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Maximum measured frequency: | >100 kHz (.csv format) 65,565 Hz (WinDaq format) |
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Alarm Outputs (Click here to see the schematic) | ||||||||||||||||||||||||||||
Number of channels: | 4 | |||||||||||||||||||||||||||
Maximum drain voltage: | 30 V | |||||||||||||||||||||||||||
Maximum sink current: | 100 mA | |||||||||||||||||||||||||||
ADC Characteristics | ||||||||||||||||||||||||||||
Voltage Measurement Resolution: |
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Thermocouple Temperature Measurement Resolution: |
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4-20 mA current loop resolution: | 26,214 ADC counts over the 4-20 mA range (±5 VFS range with 250-Ω shunt resistor) | |||||||||||||||||||||||||||
Programmable sampling intervals: | 25, 50, 100, 250, 500 mS 1, 2, 5, 10, 20, 30 S 1, 2, 5, 10, 20, 30 minutes 1 hour, External |
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Internal Memory | ||||||||||||||||||||||||||||
Type: | Non-volatile flash | |||||||||||||||||||||||||||
Size: | 4 GB (standard); 32 GB (optional) | |||||||||||||||||||||||||||
Use: | Automatic backup of recorded data | |||||||||||||||||||||||||||
Indicators and Controls | ||||||||||||||||||||||||||||
Signal I/O: | Dual, removable 16-position screw terminal connectors | |||||||||||||||||||||||||||
Power connector: | 2.0 mm center pin, 5 mm shell | |||||||||||||||||||||||||||
Status light: | One multicolor LED indicating status | |||||||||||||||||||||||||||
Alarm lights: | 4 multicolor LEDs | |||||||||||||||||||||||||||
Ethernet interface connector: | RJ45 | |||||||||||||||||||||||||||
USB drive receptacle: | Type A male | |||||||||||||||||||||||||||
USB connector: | Mini B style (usage is reserved) | |||||||||||||||||||||||||||
Control button: | Push type to set device operating mode | |||||||||||||||||||||||||||
Ground: | Screw terminal to establish Earth ground. | |||||||||||||||||||||||||||
Power I/O | ||||||||||||||||||||||||||||
Input power requirements: | 9-36 V dc @ 7.5 Watts 9-36 V dc @ 10 Watts (w/excitation) |
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Excitation power supply output: | 15 V, 130 mA or six 4-20mA sensors max,, 13 mA min | |||||||||||||||||||||||||||
Environmental | ||||||||||||||||||||||||||||
Operating Temperature: | 0 to 70 °C (32 to 158°F) | |||||||||||||||||||||||||||
Storage Temperature: | -20 to 70 °C (-4 to 158°F) | |||||||||||||||||||||||||||
Storage Humidity: | 0 to 90% non-condensing | |||||||||||||||||||||||||||
Physical Characteristics | ||||||||||||||||||||||||||||
Enclosure: | All-metal. Steel top, aluminum base | |||||||||||||||||||||||||||
Mounting: | Desktop; bulkhead with optional brackets | |||||||||||||||||||||||||||
Dimensions: | 5.4375 D × 4.125 W × 1.5 H inches 13.81D × 10.48W × 3.81H cm |
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3D Model | Click here | |||||||||||||||||||||||||||
Weight: | <1lb. (453 grams) | |||||||||||||||||||||||||||
Configurable Components | ||||||||||||||||||||||||||||
Network variables: | IP address, Subnet mask, Gateway, DNS | |||||||||||||||||||||||||||
Account log-on information: | For FTP, SFTP, SMB, SMTP | |||||||||||||||||||||||||||
User log-on information: | User and administrator names and passwords | |||||||||||||||||||||||||||
Supported Standards | ||||||||||||||||||||||||||||
Network Time Protocol (NTP): | Syncs internal time and date clock to Internet time | |||||||||||||||||||||||||||
File Transfer Protocol (FTP): | Allows the instrument to push re-corded data to an FTP server | |||||||||||||||||||||||||||
Secured File Transfer Protocol (SFTP): | Allows the instrument to push re-corded data to an SFTP server | |||||||||||||||||||||||||||
Server Message Block (SMB) protocol: | Allows the instrument to record data to a local server drive | |||||||||||||||||||||||||||
Simple Mail Transfer Protocol (SMTP): | Allows the instrument to send data and alarms to multiple email addresses | |||||||||||||||||||||||||||
Display Subsystem | ||||||||||||||||||||||||||||
Digital display: | Numeric display of acquired values scaled into engineering units in real time. Selectable precision of 1 to four digits to the right of the decimal point. | |||||||||||||||||||||||||||
Waveform display: | Scrolling plot of selected channel data in real time versus time of day. | |||||||||||||||||||||||||||
Alarms status: | Virtual LEDs display the status of the four alarm outputs | |||||||||||||||||||||||||||
Channel Settings Subsystem | ||||||||||||||||||||||||||||
Analog channel configuration: | Voltage and measurement range, temperature and thermocouple type, moving average filter, engineering units, channel label | |||||||||||||||||||||||||||
Digital/pulse channels: | Discrete, count, count with reset, frequency, engineering units, chan-nel label | |||||||||||||||||||||||||||
Trigger Subsystem | ||||||||||||||||||||||||||||
Start or stop recording trigger conditions: | Level: Above/below level, In/out window Alarm: Upon alarm activation Date/time: Specific date and time. Daily selection External |
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Auto rearm: | Enabled or disabled | |||||||||||||||||||||||||||
Alarm Subsystem | ||||||||||||||||||||||||||||
Level or edge selection: | Level: Alarm is activated when alarm condition is met on first encounter Edge: Alarm is activated only after first not being met. |
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Analog/pulse channel levels: | Above/below level, In/out window | |||||||||||||||||||||||||||
Thermocouple burnout: | Any burnout detected on a Thermocouple channel | |||||||||||||||||||||||||||
Selectable alarm ports: | 1-4 | |||||||||||||||||||||||||||
Alarm hold: | Enable/disable | |||||||||||||||||||||||||||
File Subsystem | ||||||||||||||||||||||||||||
File browse/download: | Browse files on the DI-808 internal flash memory or connected USB drive and allow selectable down-loads to the client device. | |||||||||||||||||||||||||||
Format local file storage: | Formats internal flash memory, erasing previously recorded files and reallocating file space for new recorded data. | |||||||||||||||||||||||||||
Get local file space: | Returns the available file space. | |||||||||||||||||||||||||||
Base file name: | Allows recorded files to be assigned a definable file name, and to option-ally have date and time appended. | |||||||||||||||||||||||||||
File format for USB thumb drive: | FAT32 | |||||||||||||||||||||||||||
File type: | Allows the recorded file format to be defined as either ASCII CSV or binary WDH. | |||||||||||||||||||||||||||
Device Subsystem | ||||||||||||||||||||||||||||
Device settings and information: | Program device sampling interval, temperature units (°F/°C), enable or disable auto start on boot feature, time/date/ synched to connected PC or NTP server, reboot device. | |||||||||||||||||||||||||||
Network configuration: | Configure device IP address, DNS, Subnet mask, Gateway. | |||||||||||||||||||||||||||
Users and accounts: | Configure user and administrator names and passwords. |
Articles
Making Parallel Thermocouple Measurements
Use the DI-808 Data Logger From the Internet
Sub-zero Thermocouple Measurements
Why You Need Channel-to-Channel Isolation
How To Calculate Common Mode Rejection Ratio
How To Make 4-20 mA Current Loop Measurements
Videos
How to setup trigger condition on DI-808
In this video we'll touch more on the Trigger Conditions in DI-808. We'll discuss how trigger conditions are set, explaining each trigger option, and explain how those conditions are saved to the DI-808
DI-808 Features
A quick look at the features on the DI-808 web interface including channel settings, triggers, alarms, and more.
Common Mode Rejection
This video demonstrates the ability of the DI-808 to reject common mode voltage. Very impressive!
Similar Products
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 | 8 | Yes | A | Yes | 200 | 16 | 7 Bi | USB | PC | $599.00 |
DI-808 | 8 | - | A | Yes | 40 | 16 | 4 In 4 Out | Ethernet | Internal, USB flash, Cloud | $995 |
DI-4718B-U | 8 | - | C† | Yes (DI-8B) | 160,000 | 12 to 16 | 2 In | USB | PC or USB flash | $548.00 |
DI-4718B-E | 8 | - | C† | Yes (DI-8B) | 160,000 | 12 to 16 | 2 In | USB, Ethernet | PC or USB flash | $598.00 |
GL240 | 10 | - | B | Yes | 100 | 16 | 4 In 4 Out | USB | 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 |
DI-718B-US | 8 | - | C | Yes (DI-8B) | 14,400 | 14 | 2 In | USB | PC or SD Card | $695 |
DI-718B-ES | 8 | - | C | Yes (DI-8B) | 14,400 | 14 | 2 In | Ethernet | PC or SD Card | $895 |
*Expansion capabilitie 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.