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USB Data Acquisition Interface Modules
USB Interface Modules
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Volume Discount Schedule
| Quantity | Price each |
|---|---|
| 1-4 | $570.80 |
| 5-9 | $542.26 |
| 10-24 | $530.84 |
| 25-49 | $508.01 |
| 50-99 | $496.60 |
| 100+ | $485.18 |
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- Complete Data Acquisition Systems
- Analog and Digital I/O Models Available
- USB Interface
- Modbus® RTU Protocol
D8400 Model Options
View all modelsEdit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.
*Highlighted options are not compatible. Please select a different combination.
Analog Input Type
Analog Input Class
Number of Analog Inputs
Maximum Sample Rate (per sec)
Analog Input Resolution
Input Range
Output Type
Number of Outputs
Output Range
Digital I/O
Power
Interface Protocol
Additional Features
WARNING: This product can expose you to 1,3 - Butadiene, a chemical known to the State of California to cause cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.
The D8000 series USB interface modules are a family of complete data acquisition modules for use in process control systems. The analog input models can measure process signals such as thermocouples, 4 to 20 mA current loops, and discrete contact closures. The analog output models can generate voltage or current signals for controlling annunciators or valves. The digital input and output models can sense the state of remote digital signals or control solid state relays. Complete data acquisition systems can be created with ease with the D8000 modules and a host computer.
The modules provide direct connection to a wide variety of sensors and annunciators such as thermocouple probes, 4 to 20 mA loops, and DC voltage. They perform all signal conditioning, linearization and contain no internal pots or DIP switches. All user-selectable features such as ranges, communications settings are stored in nonvolatile EEPROM, which maintains these values even after power is removed.
The D8000 series USB interface modules connect to a host computer using a USB interface cable and they communicate using a virtual serial communications port using the Modbus RTU protocol.
Use a USB cable to connect the D8000 to a host computer. Plugging the cable into the computer will create a virtual serial port in the computer. The virtual serial port will be used by the host to communicate with the module. Serial communication ports are supported by almost all data acquisition and process control programs in the marketplace.
The Modbus RTU protocol is used to read and write data values to the D8000 series modules. The Modbus RTU protocol is a serial protocol and communicates with external devices through serial ports. The Modbus RTU protocol is widely recognized throughout the data acquisition industry and is supported by almost all commercial process control programs.
Multiple D8000 series modules can be connected to one host computer. A unique and separate serial port is created for each module that is connected. The serial port approach provides instant compatibility with almost all industry standard data acquisition programs that support the Modbus RTU protocol.
With the D8000 series modules, anyone familiar with a personal computer can construct a data acquisition system. This approach to data acquisition is very flexible, easy to use and cost effective. The modules can be mixed and matched to fit your application. You do not need engineering experience in complicated data acquisition hardware to build a system.
ANALOG INPUT MODULES
The D8100 through D8400 series analog input modules contain seven differential analog input channels. Each module contains analog signal conditioning circuits that are optimized for a specific signal input type. Signal types include DC voltage, 4 to 20 mA current loops, and eight thermocouple types. Each input channel can be programmed to accept a different signal input range.
The sensor signals are converted to digital data with a microprocessor-controlled integrating A/D converter. Offset and gain errors in the analog circuitry are continuously monitored and corrected using microprocessor techniques.
The analog input modules communicate the resultant data values as 16-bit unsigned integer numbers that represent a percentage of the full. The modules continuously convert data values at the rate of up to 25 conversions per second and store the latest result in a buffer. The data values are requested by sending a Modbus query to the module. The D8000 series modules will instantly respond by communicating the data values back to the host processor.
ANALOG OUTPUT MODULES
The D8500 analog output modules contain two 12-bit digital to analog converters (DAC) for generating either voltage or current output signals. The output signal type for each DAC is user-selectable and each DAC is independently controlled via a host computer using the Modbus RTU protocol. Four different analog output ranges are available, two voltage ranges and two current ranges.
The D8500 analog output modules contain userselectable features such as programmable output slew rate, a communications watchdog timer and programmable startup signal value. They also include an 8-bit analog to digital converter for analog readback the output signal.
The communications watchdog timer can be used to move the analog output signal to a known “safe” condition in the event of a communications failure.
DIGITAL INPUT MODULES
The D8710 digital input modules contain 15 individual inputs for monitoring logic levels, contact closures, or other ON/OFF signals in a data acquisition system. Each digital input terminal contains a pull-up biasing resistor allowing for direct connection to a set of contacts. The input terminals can accept signals between ±30 Vdc without damage.
DIGITAL OUTPUT MODULES
The D8720 digital output modules contain 15 individual open-collector transistor outputs for controlling annunciators, lamps, or other devices that require an ON/OFF signal.
The D8720 digital output modules also contain programmable features such as a communications watchdog timer and programmable startup signal values for each bit.
The communications watchdog timer can be used to move the digital output signals to a known “safe” condition in the event of a communications failure.
COMMUNICATIONS
The D8000 series modules are designed to easily interface with computers using a USB interface. The USB interface creates a virtual serial communications port on the host computer. All communications to and from the module, through the virtual serial port are performed using the Modbus RTU protocol. A new serial port is added for each D8000 series module.
MODBUS COMMAND SET
The D8000 series modules use the Modbus RTU protocol for communications. The Modbus RTU binary protocol uses a master-slave technique, in which only the master device can initiate transactions. The slave devices respond by supplying the requested data to the master or by performing the requested action in the query. The master can address any slave device. The returned messages are considered response messages. The supported master function codes are:
Modbus RTU Functions and Descriptions
01 – Read Coil Status
02 – Read Register Status
03 – Read Holding Registers
04 – Read Input Register (Analog Inputs)
05 – Force Single Coil
06 – Preset Single Register
0F – Force Multiple Coils
10 – Preset Multiple Registers
PROCESS CONTROL SOFTWARE
Modbus RTU protocol is one of the most widely supported serial protocols in the data acquisition market. Modbus RTU software drivers are available for almost every data acquisition software program available today. Thus providing instant connectivity between the D8000 modules and most data acquisition software programs.
SETUP
The D8000 series modules are initialized at the factory using the Modbus RTU protocol. User selectable features such as individual channel range selection and digital filters are easily configured using the D6000/D8000 series utility software. Each D8000 module must be properly configured before installation into a Modbus system.
UTILITY SOFTWARE Complimentary Utility Software is included with each module. The software is compatible with Windows operating systems and distributed on CDROM. The Utility Software simplifies configuration of all user selectable options such as device address, baud rate and filtering constants. The latest version of our software is always available on our web site.
SPECIFICATIONS
(Typical at +25°C and nominal power supply unless otherwise noted)
GENERAL
Programmable Digital Filters: In analog input modules
Max CMV (Input to Output at 115 Vrms, 60 Hz): 500 Vrms
Setups: Stored in EEPROM
Unused Analog Input Channels: Software disable
INTERFACE
Communications: Modbus RTU protocol
Interface: USB port
POWER REQUIREMENTS
Supply Voltage: Unregulated 10 to 30 Vdc protected against power supply reversals
ENVIRONMENTAL
Operating Temperature Range: -25 to 70°C (-13 to 158°F)
Storage Temperature Range: -25 to 85°C (-13 to 185°F)
Relative Humidity: 0 to 95% RH non-condensing
PACKAGE, DIMENSIONS AND CONNECTORS
Case: ABS thermoplastic, UL-94-5VA rated
Dimensions: 102 H x 152 W x 36 mm D (4 x 6 x 1.5")
Mounting Holes: 165 mm (6.5") on center
Connectors: Screw terminal barrier plug (supplied)
MODULE SPECIFICATIONS
D8100 VOLTAGE INPUTS
Number of Channels: 7 differential voltage inputs
Ranges: ±0.025V, ±0.05V, ±0.1V, ±1V, ±5V, ±10V
Resolution: 16-bit ADC, 25/20 conversions per second
Accuracy: ±0.05% of FS max
Span Tempco: ±50 ppm/°C max
Input Burnout Protection: To 250 Vac
Input Impedance: 20 MΩ min
Power Requirements: Serial = 1.4 W
D8200 CURRENT INPUTS
Number of Channels: 7 differential current inputs
Range: ±20 mA
Resolution: 16-bit ADC, 25/20 conversions per second
Accuracy: ±0.05% of FS max
Span Tempco: ±50 ppm/°C max
Voltage Drop: 2.0V max
Input Impedance: <100 Ω (70 typical)
Power Requirements: Serial = 1.4 W
D8300 THERMOCOUPLE INPUTS
Number of Channels: 7 differential thermocouple inputs
Thermocouple Types: J, K, T, E, R, S, B, and C Ranges:
J: -200 to 760°C (-328 to 400°F)
K: -150 to 1250°C (-238 to 2282°F)
T: -200 to 400°C (-328 to 752°F)
E: -100 to 1000°C (-148 to 1832°F)
R: 0 to 1750°C (32 to 3182°F)
S: 0 to 1750°C (32 to 3182°F)
B: 0 to 1820°C (33 to 3308°F)
C: 0 to 2315°C (32 to 4199°F)
Thermocouple Accuracy
(Error From all Sources) from 0 to 40°C Ambient:
J, K, T, E: ±1.5°C max
R, S, B, C: ±3.5°C max (300°C to +F.S.)
Resolution: 16-bit ADC, 25/20 conversions per second
Input Impedance: 20 MΩ min
Cold Junction Compensation: Automatic
Lead Resistance Effect: <40 µV per 350 Ω
Indication: Open thermocouple and over range indication
Input Burnout Protection: To 250 Vac
Power Requirements: Serial = 1.4W
D8400 VOLTAGE, THERMOCOUPLE, CURRENT INPUTS
Number of Channels: 7 differential voltage, thermocouple, current inputs
Specifications: Equal to D8100, D8200 and D8300 series
D8500 ANALOG OUTPUTS
Number of Channels: Two analog outputs (programmable for voltage or current output)
Voltage Ranges: 0 to 10 Vdc, ±10 Vdc
Current Ranges: 0 to 20 mA, 4 to 20 mA
Update Rate: 250 conversions per second
Accuracy: ±0.1%
Resolution: 12-bit DAC resolution
Span Tempco: ±25 ppm/°C max
Settling Time to 0.1% FS: 1 mS
Communications: Watchdog timer
Current Output Compliance: ±12 Vdc
Voltage Output Drive: 5 mA max
Analog Output Signal Readback: 8-bit ADC
Isolation: 500 Vac, output common to system ground
Current Output Burnout: Protected to 250 Vac
Power Requirements: Serial = 2.1 W
D8710 DIGITAL INPUTS
Number of Channels: 15 digital inputs
Internal: 10K pull-up resistors on each bit accept direct switch closure
Logic “0”: <1 Vdc
Logic “1”: >3.5 Vdc
Input Burnout: To ±30 Vdc without damage
Isolation: 500 Vac, input common to system ground
Power Requirements: Serial = 0.75 W
D8720 DIGITAL OUTPUTS
Number of Channels: 15 open-collector outputs to 30 Vdc, 100 mA max
Vsat: +0.3 Vdc max at 100 mA
Short Circuit Protection: To 500 mA
Communications: Watchdog timer
Digital Output Update Rate: 4.5 Hz
Isolation: 500 Vac, output common to system ground
Power Requirements: Serial = 1.0W
The modules provide direct connection to a wide variety of sensors and annunciators such as thermocouple probes, 4 to 20 mA loops, and DC voltage. They perform all signal conditioning, linearization and contain no internal pots or DIP switches. All user-selectable features such as ranges, communications settings are stored in nonvolatile EEPROM, which maintains these values even after power is removed.
The D8000 series USB interface modules connect to a host computer using a USB interface cable and they communicate using a virtual serial communications port using the Modbus RTU protocol.
Use a USB cable to connect the D8000 to a host computer. Plugging the cable into the computer will create a virtual serial port in the computer. The virtual serial port will be used by the host to communicate with the module. Serial communication ports are supported by almost all data acquisition and process control programs in the marketplace.
The Modbus RTU protocol is used to read and write data values to the D8000 series modules. The Modbus RTU protocol is a serial protocol and communicates with external devices through serial ports. The Modbus RTU protocol is widely recognized throughout the data acquisition industry and is supported by almost all commercial process control programs.
Multiple D8000 series modules can be connected to one host computer. A unique and separate serial port is created for each module that is connected. The serial port approach provides instant compatibility with almost all industry standard data acquisition programs that support the Modbus RTU protocol.
With the D8000 series modules, anyone familiar with a personal computer can construct a data acquisition system. This approach to data acquisition is very flexible, easy to use and cost effective. The modules can be mixed and matched to fit your application. You do not need engineering experience in complicated data acquisition hardware to build a system.
ANALOG INPUT MODULES
The D8100 through D8400 series analog input modules contain seven differential analog input channels. Each module contains analog signal conditioning circuits that are optimized for a specific signal input type. Signal types include DC voltage, 4 to 20 mA current loops, and eight thermocouple types. Each input channel can be programmed to accept a different signal input range.
The sensor signals are converted to digital data with a microprocessor-controlled integrating A/D converter. Offset and gain errors in the analog circuitry are continuously monitored and corrected using microprocessor techniques.
The analog input modules communicate the resultant data values as 16-bit unsigned integer numbers that represent a percentage of the full. The modules continuously convert data values at the rate of up to 25 conversions per second and store the latest result in a buffer. The data values are requested by sending a Modbus query to the module. The D8000 series modules will instantly respond by communicating the data values back to the host processor.
ANALOG OUTPUT MODULES
The D8500 analog output modules contain two 12-bit digital to analog converters (DAC) for generating either voltage or current output signals. The output signal type for each DAC is user-selectable and each DAC is independently controlled via a host computer using the Modbus RTU protocol. Four different analog output ranges are available, two voltage ranges and two current ranges.
The D8500 analog output modules contain userselectable features such as programmable output slew rate, a communications watchdog timer and programmable startup signal value. They also include an 8-bit analog to digital converter for analog readback the output signal.
The communications watchdog timer can be used to move the analog output signal to a known “safe” condition in the event of a communications failure.
DIGITAL INPUT MODULES
The D8710 digital input modules contain 15 individual inputs for monitoring logic levels, contact closures, or other ON/OFF signals in a data acquisition system. Each digital input terminal contains a pull-up biasing resistor allowing for direct connection to a set of contacts. The input terminals can accept signals between ±30 Vdc without damage.
DIGITAL OUTPUT MODULES
The D8720 digital output modules contain 15 individual open-collector transistor outputs for controlling annunciators, lamps, or other devices that require an ON/OFF signal.
The D8720 digital output modules also contain programmable features such as a communications watchdog timer and programmable startup signal values for each bit.
The communications watchdog timer can be used to move the digital output signals to a known “safe” condition in the event of a communications failure.
COMMUNICATIONS
The D8000 series modules are designed to easily interface with computers using a USB interface. The USB interface creates a virtual serial communications port on the host computer. All communications to and from the module, through the virtual serial port are performed using the Modbus RTU protocol. A new serial port is added for each D8000 series module.
MODBUS COMMAND SET
The D8000 series modules use the Modbus RTU protocol for communications. The Modbus RTU binary protocol uses a master-slave technique, in which only the master device can initiate transactions. The slave devices respond by supplying the requested data to the master or by performing the requested action in the query. The master can address any slave device. The returned messages are considered response messages. The supported master function codes are:
Modbus RTU Functions and Descriptions
01 – Read Coil Status
02 – Read Register Status
03 – Read Holding Registers
04 – Read Input Register (Analog Inputs)
05 – Force Single Coil
06 – Preset Single Register
0F – Force Multiple Coils
10 – Preset Multiple Registers
PROCESS CONTROL SOFTWARE
Modbus RTU protocol is one of the most widely supported serial protocols in the data acquisition market. Modbus RTU software drivers are available for almost every data acquisition software program available today. Thus providing instant connectivity between the D8000 modules and most data acquisition software programs.
SETUP
The D8000 series modules are initialized at the factory using the Modbus RTU protocol. User selectable features such as individual channel range selection and digital filters are easily configured using the D6000/D8000 series utility software. Each D8000 module must be properly configured before installation into a Modbus system.
UTILITY SOFTWARE Complimentary Utility Software is included with each module. The software is compatible with Windows operating systems and distributed on CDROM. The Utility Software simplifies configuration of all user selectable options such as device address, baud rate and filtering constants. The latest version of our software is always available on our web site.
SPECIFICATIONS
(Typical at +25°C and nominal power supply unless otherwise noted)
GENERAL
Programmable Digital Filters: In analog input modules
Max CMV (Input to Output at 115 Vrms, 60 Hz): 500 Vrms
Setups: Stored in EEPROM
Unused Analog Input Channels: Software disable
INTERFACE
Communications: Modbus RTU protocol
Interface: USB port
POWER REQUIREMENTS
Supply Voltage: Unregulated 10 to 30 Vdc protected against power supply reversals
ENVIRONMENTAL
Operating Temperature Range: -25 to 70°C (-13 to 158°F)
Storage Temperature Range: -25 to 85°C (-13 to 185°F)
Relative Humidity: 0 to 95% RH non-condensing
PACKAGE, DIMENSIONS AND CONNECTORS
Case: ABS thermoplastic, UL-94-5VA rated
Dimensions: 102 H x 152 W x 36 mm D (4 x 6 x 1.5")
Mounting Holes: 165 mm (6.5") on center
Connectors: Screw terminal barrier plug (supplied)
MODULE SPECIFICATIONS
D8100 VOLTAGE INPUTS
Number of Channels: 7 differential voltage inputs
Ranges: ±0.025V, ±0.05V, ±0.1V, ±1V, ±5V, ±10V
Resolution: 16-bit ADC, 25/20 conversions per second
Accuracy: ±0.05% of FS max
Span Tempco: ±50 ppm/°C max
Input Burnout Protection: To 250 Vac
Input Impedance: 20 MΩ min
Power Requirements: Serial = 1.4 W
D8200 CURRENT INPUTS
Number of Channels: 7 differential current inputs
Range: ±20 mA
Resolution: 16-bit ADC, 25/20 conversions per second
Accuracy: ±0.05% of FS max
Span Tempco: ±50 ppm/°C max
Voltage Drop: 2.0V max
Input Impedance: <100 Ω (70 typical)
Power Requirements: Serial = 1.4 W
D8300 THERMOCOUPLE INPUTS
Number of Channels: 7 differential thermocouple inputs
Thermocouple Types: J, K, T, E, R, S, B, and C Ranges:
J: -200 to 760°C (-328 to 400°F)
K: -150 to 1250°C (-238 to 2282°F)
T: -200 to 400°C (-328 to 752°F)
E: -100 to 1000°C (-148 to 1832°F)
R: 0 to 1750°C (32 to 3182°F)
S: 0 to 1750°C (32 to 3182°F)
B: 0 to 1820°C (33 to 3308°F)
C: 0 to 2315°C (32 to 4199°F)
Thermocouple Accuracy
(Error From all Sources) from 0 to 40°C Ambient:
J, K, T, E: ±1.5°C max
R, S, B, C: ±3.5°C max (300°C to +F.S.)
Resolution: 16-bit ADC, 25/20 conversions per second
Input Impedance: 20 MΩ min
Cold Junction Compensation: Automatic
Lead Resistance Effect: <40 µV per 350 Ω
Indication: Open thermocouple and over range indication
Input Burnout Protection: To 250 Vac
Power Requirements: Serial = 1.4W
D8400 VOLTAGE, THERMOCOUPLE, CURRENT INPUTS
Number of Channels: 7 differential voltage, thermocouple, current inputs
Specifications: Equal to D8100, D8200 and D8300 series
D8500 ANALOG OUTPUTS
Number of Channels: Two analog outputs (programmable for voltage or current output)
Voltage Ranges: 0 to 10 Vdc, ±10 Vdc
Current Ranges: 0 to 20 mA, 4 to 20 mA
Update Rate: 250 conversions per second
Accuracy: ±0.1%
Resolution: 12-bit DAC resolution
Span Tempco: ±25 ppm/°C max
Settling Time to 0.1% FS: 1 mS
Communications: Watchdog timer
Current Output Compliance: ±12 Vdc
Voltage Output Drive: 5 mA max
Analog Output Signal Readback: 8-bit ADC
Isolation: 500 Vac, output common to system ground
Current Output Burnout: Protected to 250 Vac
Power Requirements: Serial = 2.1 W
D8710 DIGITAL INPUTS
Number of Channels: 15 digital inputs
Internal: 10K pull-up resistors on each bit accept direct switch closure
Logic “0”: <1 Vdc
Logic “1”: >3.5 Vdc
Input Burnout: To ±30 Vdc without damage
Isolation: 500 Vac, input common to system ground
Power Requirements: Serial = 0.75 W
D8720 DIGITAL OUTPUTS
Number of Channels: 15 open-collector outputs to 30 Vdc, 100 mA max
Vsat: +0.3 Vdc max at 100 mA
Short Circuit Protection: To 500 mA
Communications: Watchdog timer
Digital Output Update Rate: 4.5 Hz
Isolation: 500 Vac, output common to system ground
Power Requirements: Serial = 1.0W
Rated 4 out of
5
by
Aeon from
Good Quality
I'm really happy to have one and I need more... but unfortunately it's very hard to find OMEGA products in IRAN
Date published: 2018-01-23
I have a 4-20mA three-wire Omega LVIT - will this interface work with that? I assume the LVIT (+) would go to a CH (+) but I don't understand what would go in the CH (-) side. Would the LVIT and this share the same power supply or do I need one for each?
I tried to email the DAS team and have not received a response.
I have a 4-20mA Omega LVIT (Item#: LDI-619-015-A020S), which is a 3-wire. Red, black, and green (also a white for calibration). I also have a D8200 USB Interface, which I’m (hopefully) using to connect the sensor to my PC and then to DASYLAB. However, the D8200 has a (+) and (-) terminal for each channel. I’m assuming that the green wire (+ signal) for the LVIT goes to the (+) terminal of CH1 and nothing is attached to the (-) terminal? Or should I shunt the (-) terminal to the GRD terminal?
Additionally, I have an adjustable 30V regulated DC power supply that I am running at 20V. Can one power supply be used to both provide the excitation voltage to the LVIT (red and black wires) AND the power to the D8200 (GRD and VS)? Or do I need two separate power supplies?
I was supposed to have the system I’m working on fully operational by now for work but am really struggling. Any expedient advice is GREATLY appreciated.
Date published: 2022-07-21
Does the D8400 model support 4-20mA output pressure transducers such as the PX309-500GI?
Thank you for your question. Yes it will.
Date published: 2023-01-12
Can DS8400 be interfaced to a linux system? i.e will the system detect the device as as virtual COM port? any specific USB serial drivers required?
Thank you for your question. We will require more information to help on this question, please email the DAS team at DAS@dwyeromega.com
Date published: 2023-12-15
What compatible software from Omega can be purchased to fit this product?
Hello, thank you for your question. Complimentary Utility Software is included with each module. The software is compatible with Windows operating systems and distributed on CDROM. The Utility Software simplifies configuration of all user selectable options such as device address, baud rate and filtering constants. The latest version of our software is always available on our web site. Besides the utility software, we don't have any other program design for this unit.
The D8000 series USB interface modules connect to a host computer using a USB interface cable and they communicate using a virtual serial communications port using the Modbus RTU protocol.The Modbus RTU protocol is used to read and write data values to the D8000 series modules. The Modbus RTU protocol is a serial protocol and communicates with external devices through serial ports. The Modbus RTU protocol is widely recognized throughout the data acquisition industry and is supported by almost all commercial process control programs.
Date published: 2021-02-03
I cannot find this utility software anywhere for the D8100 series. I found software for D6000 series but when I try to select the correct module type the D8100 doesn't show up and so I cannot use this software.
Thank you for your question. We will require more information to help on this question, please email the DAS team at DAS@OMEGA.COM
Date published: 2023-01-25
Is it possible to connect an S-Beam load cell with 2mv/V output?
Thank you for your question. The correct model for the load cell is D8100. Make sure you power the load cell per specification because D8100 does not provide excitation.
Date published: 2022-11-30
Can I use this DAQ with Labview? are there drivers available?
Sorry but the device cannot be used with Labview.
Date published: 2022-07-15
Do you provide some kind of API for software integration?
We do not provide an API for this device.
Date published: 2020-06-09
DIN rail mounting kit for D6000 Series modules
$37.15
25 In Stock
WARNING: This product can expose you to 1,3 - Butadiene, a chemical known to the State of California to cause cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.
