DT9828

Low-Cost, Isolated, Thermocouple
Measurement Module
Overview
The DT9828 is an 8-channel, isolated thermocouple
DAQ module that features superb accuracy yet is lowcost and easy-to-use. The DT9828 supports a range ofthermocouple types and includes QuickDAQ application
software to get up and running quickly.

Key Features• 8 differential analog input channels for thermocouple
or voltage measurements• Excellent accuracy of 0.09°C and noise of 0.1°C forthermocouples• 24-bit resolution, sample rates of up to 600 S/s• ±500 V galvanic isolation for all analog and digital
I/O for noise-free data

The low-cost DT9828 thermocouple measurement module,
combined with the included QuickDAQ ready-to-measureapplication software, is a powerful temperature data logger.
Accuracy to 0.09 °C, low noise, and sampling to 600 S/s allow
high-quality measurement far beyond other products.

• Complete support for B, E, J, K, N, R, S, and T
thermocouple types• Input range of ±156 mV• QuickDAQ application to acquire, analyze, andSupported Operating Systems

display temperature data
• Compatible with LabVIEW and MATLAB• USB bus-powered for portability• Windows® 10/8/7/Vista®/XP 32/64-bit
Isolation

Isolated Power

Status LED

16 PosTerm Block

8 Analog
Inputs (DI)

5 V DC

DC/DC

FPGA

EEPROM

MUX
24-BitADC

8:1 Differential

ADC
Controls

Bus
InterfaceandControl
Registers

USB
Controller

MUX
Controls

FPGA
CJ Sensor

Digital In
x4

Digital Out
x4

12 PosTerm Block4
DigitalInputsDT9828 block diagram.

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1

4
DigitalOutputs

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System Temperature Error
The tables on this page list the typical accuracy errors and the maximum accuracy errors of the DT9828 for eachthermocouple type at several thermocouple measurement values.
The values in the following table are the typical errors expected when the module is operating at 23 °C ±5 °C ambient.
Typical Thermocouple Measurement Accuracy of the DT9828 at 23 °C ±5 °C
Thermocouple
Temperature

Thermocouple Type1
J

K

T

E

–100 °C±0.06 °C

±0.08 °C

±0.08 °C

±0.05 °C

0 °C

±0.05 °C

±0.08 °C

±0.1 °C±0.06 °C

S

R

B

N

—

—

—

±0.13 °C

±0.58 °C

±0.6 °C—±0.13 °C

100 °C±0.1 °C±0.1 °C±0.09 °C

±0.08 °C

±0.43 °C

±0.42 °C—

±0.12 °C

300 °C±0.13 °C

±0.18 °C

±0.14 °C

±0.12 °C

±0.38 °C

±0.36 °C

±0.99 °C

±0.16 °C

500 °C±0.19 °C

±0.2 °C—±0.17 °C

±0.4 °C±0.37 °C

±0.65 °C

±0.2 °C

700 °C±0.24 °C

±0.24 °C—

±0.23 °C

±0.43 °C

±0.4 °C±0.52 °C

±0.25 °C

900 °C±0.25 °C

±0.34 °C—

±0.29 °C

±0.46 °C

±0.42 °C

±0.47 °C

±0.3 °C

1100 °C±0.33 °C

±0.38 °C——

±0.48 °C

±0.44 °C

±0.45 °C

±0.36 °C

1400 °C

—

—

—

—

±0.54 °C

±0.5 °C±0.46 °C—

The values in the following table are the maximum errors expected when operating the module over the full specified
temperature range of 0 °C to 50 °C.
Typical Thermocouple Measurement Accuracy of the DT9828 at 0 °C to 50 °C
Thermocouple
Temperature–100 °C

1

Thermocouple Type1
J

K

T

E

S

R

B

N

±0.19 °C

±0.23 °C

±0.24 °C

±0.16 °C———

±0.34 °C

0 °C

±0.19 °C

±0.24 °C

±0.26 °C

±0.19 °C

±1.34 °C

±1.39 °C—

±0.33 °C

100 °C±0.26 °C

±0.27 °C

±0.26 °C

±0.23 °C

±1.0 °C±0.99 °C—

±0.33 °C

300 °C±0.34 °C

±0.41 °C

±0.34 °C

±0.3 °C±0.89 °C

±0.85 °C

±2.28 °C

±0.39 °C

500 °C±0.45 °C

±048 °C—±0.4 °C±0.92 °C

±0.86 °C

±1.48 °C

±0.47 °C

700 °C±0.53 °C

±0.57 °C—

±0.52 °C

±0.98 °C

±0.91 °C

±1.19 °C

±0.57 °C

900 °C±0.6 °C±0.74 °C—

±0.64 °C

±1.03 °C

±0.95 °C

±1.08 °C

±0.67 °C

1100 °C±0.75 °C

±0.86 °C——

±1.08 °C

±0.99 °C

±1.03 °C

±0.8 °C

1400 °C

—

—

—

—

±1.21 °C

±1.11 °C

±1.04 °C—

Conditions for accuracy measurements:—— — Module has been calibrated and warmed up for 10 minutes.
—— — Module is calibrated at 23 °C.
—— — CJC offset is nulled using CJC calibration process.
—— — The module is operated in a stable environment within the specified limits.
—— — Inclusive of CJC error and input offset, gain, linearity, and long-term stability errors.
—— — Exclusive of thermocouple errors.
—— — Exclusive of noise.
—— — Specifications are valid for 1 year from calibration.

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Perform Sophisticated Measurements in 8 Quick and Easy Steps with QuickDAQ

Configure acquisition settings
Select input
deviceSTEP 1: Select Input Device (DT9828),

STEP 2: Use the Recording and Acquisition tabs to configure
the acquisition settings, including the acquisition duration,
sampling frequency, and trigger to use.

Configure display channels

Configure sensor inputs

STEP 4: Use the Plot and Data Config window to select thechannels to display and to configure the appearance of thedisplay.

STEP 3: Configure settings for channels in the analog input
data stream, including the channel name, sensor type,engineering units, and scaling factors.
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Analyze

Record data

STEP 5: Press the Record button to start the acquisition ofcontinuous, gap-free data.

STEP 6: Use the Channel Plot, Channel Display, and Statistics
windows to view and analyze the acquired data.

View data in Excel

Export data

STEP 7: Click the Open Current Data in Excel button to
analyze the data in Excel.

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STEP 8: Specify how to save the data. Supported file formats
include tab-delimited text (.TXT) andcomma-delimited text (.CSV).

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QuickDAQ
QuickDAQ allows you to acquire and display from all
Data Translation USB and Ethernet data acquisition
devices that support analog input streaming. Combine
QuickDAQ with Data Translation hardware to acquiredata, record data to disk, display the results in both aplot and digital display, and read a recorded data file.
Be productive right out of the box with this powerfuldata logging software. Data can be exported to otherapplications like Microsoft Excel® and The Mathworks
MATLAB® for more advanced analysis. Two additional
options can be purchased to add FFT analysis capabilities
to the base package.

QuickDAQ ships free-of-charge and allows you to get up andrunning quickly.

Key Features

Other Software Options• QuickDAQ Base Package (Free)

There are many software choices available for application
development, from ready-to-measure applications toprogramming environments.

oo Ready-to-measure application software
oo Configure, acquire, log, display, and analyze yourdata
oo Customize many aspects of the acquisition,

The following software is available for use with theDT9828 module and is provided on the Data Acquisition
Omni CD:

display, and recording functions to suit yourneeds
• FFT Analysis Option (License Required)oo Includes all the features of the QuickDAQ Base
Packageoo Perform single-channel FFT operations including:◊ Auto Spectrum◊ Spectrum◊ Power Spectral Density
oo Configure and view dynamic performancestatistics
oo Supports Hanning, Hamming, Bartlett, Blackman,
Blackman Harris, and Flat Top response windows• Advanced FFT Analysis Option (License Required)oo Includes all the features of the QuickDAQ Base
Package and FFT Analysis Package
oo Perform 2-channel FFT operations including:◊ FRF◊ Cross-Spectrum◊ Cross Power Spectral Density◊ Coherence◊ Coherent Output Poweroo Supports real, imaginary, and Nyquist display
functionsoo Additional FFT analysis functions supported:
Exponential, Force, Cosiner Taperoo Save data to .uff file format(508) 946-5100• DT9828 Device Driver –The device driver allows you
to use a DT9828 module with any of the supported
software packages or utilities.
• DT9828 Calibration Utility – This utility allows you
to calibrate features of a DT9828 module.
• Quick DataAcq application – The Quick DataAcq
application provides a quick way to get up andrunning. Using this application, verify key featuresof the module, display data on the screen, and savedata to disk.
• DT-Open Layers® for .NET Class Library – Use thisclass library if you want to use Visual C#® or Visual
Basic® for .NET to develop application software
using Visual Studio® 2003-2012; the class librarycomplies with the DT-Open Layers standard.
• DataAcq SDK – Use the DataAcq SDK to use Visual
Studio 6.0 and Microsoft® C or C++ to develop
application software using Windows 10/8/7/Vista/
XP 32/64-bit; the DataAcq SDK complies with the
DT-Open Layers standard.
• DAQ Adaptor for MATLAB – Data Translation’s
DAQ Adaptor provides an interface between the
MATLAB® Data Acquisition (DAQ) toolbox fromThe MathWorks™ and Data Translation’s DT-Open
Layers architecture.
• LV-Link – Data Translation’s LV-Link is a library of
VIs that enable LabVIEW™ programmers to accessthe data acquisition features of DT-Open Layers
compliant USB and PCI devices.

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Specifications
Basic Module Specifications

Voltage Measurement Specifications

FeatureSpecifications

Number of analog input channels

8 Differential (0 to 7), Isolated

Number of voltage channels

Number of digital input lines

4 Isolated, TTL, 12 V and 24 V
digital inputs

Up to 8 differential voltage
inputs

A/D converter resolution

24-bits

Full-scale input range±156.25 mV

Aggregate sample rate

600 Samples/s maximum

Sampling mode

Multiplexed

DC differential input impedance

10 MΩ

Input bias current

250 nA

Input common mode voltage±500 V maximum

Differential input voltage±10 V maximum (protection)

Common mode rejection @ 50 Hz
and 60 Hz

120 dBNoise

3 μV pk-pk at maximum
throughput

Input signal bandwidth, –3 dB

5 Hz

Offset error2±20 μV

Gain error±0.03% of readingLinearity error±2 μV maximum

Offset error tempco±20 nV/°C

Gain error tempco±0.0015% of reading/°C

Number of digital output lines
Input functions

Feature4 Isolated, open-collector
digital outputs
Thermocouples or voltage
inputs

A/D converter typeHigh stability 24-bit DeltaSigma with 8 channel
multiplexer

Data coding
Analog input:

32-bit floating point

Digital I/O:

BinaryThermocouple Specifications
FeatureSpecifications

Number of thermocouple channels

Up to 8 thermocouples

Thermocouple types (softwareselectable)

J, K, T, B, E, N, R, S

A/D converter resolution

24 bits

Full-scale input range±156.25 mV

Aggregate sample rate (throughput)

600 Samples/s maximum

Sampling mode

Multiplexed to Delta-Sigma
A/D

Accuracy (for Type K thermocouples)

0.09 °C typical; thermocouple
at 25 °C

Noise (for Type K thermocouples)

0.1 °C peak to peak, typical,
with moving average filter

DC differential input impedance

10 MΩ

Open thermocouple detect current

250 nA

Input common mode voltage±500 V maximum

Differential input voltage±10 V maximum (protection)

Common mode rejection @ 50 Hz
and 60 Hz

120 dB

Warm-up time

10 minutes

Specifications1

1

Conditions for specification:—— Module is calibrated at 23 °C.
—— Values are typical for the module operated at 23 °C ±5 °C
environment.
—— Valid for 1 year from calibration2

Voltage source impedance <= 50 Ω

Input Voltage Noise and CJC Sensor Noise for the DT9828
Sample Rate (S/s)

Input Voltage Noise (µV pk-pk)

CJC Noise (°C pk-pk)

Moving Average Filter

No Filter

Moving Average Filter

No Filter

600

3.0

12.0

0.01

0.025

100

1.5

4.0

0.01

0.025

60

1.0

3.0

0.01

0.025

10

0.5

1.0

0.01

0.025

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Isolation and Protection Specifications
FeatureOrdering Summary

Specifications

HARDWARE• DT9828

ESD protection per standard
EN6100-4-2:2009
Arc:

8 kV

Contact:

4 kV

Isolation voltage from analog input anddigital I/O to the host computer

FREE SOFTWARE• QuickDAQ• DAQ Adaptor for MATLAB — Access theanalysis and visualization tools of MATLAB®.
• LV-Link — Access the power of Data
Translation boards through LabVIEW™.

±500 V operational

Power, Physical, and Environmental Specifications
FeatureOPTIONAL SOFTWARE• QuickDAQ FFT Analysis Option (License
Required)• QuickDAQ Advanced FFT Analysis Option(License Required)

Specifications

Power+5 V ±5% from USB host;
200 mA maximum

Physical dimensions

Height: 1.472 inches (37.39 mm)
Width: 4.175 inches (106.05 mm)
Length: 6.030 inches (153.16 mm)

Weight6.85 oz. (197 g)

Environmental
Operating temperature range:

0 °C to 55 °C

Storage temperature range:–25 °C to 85 °C

Relative humidity:

To 95%, noncondensing

Terminal Block Specifications
FeatureSpecifications

Analog input screw terminal block (TB1)

16-position header: Phoenix Contact 3.5 mm,
1984756

Digital I/O screw terminal block (TB2)

12-position header: Phoenix Contact 3.5 mm
vertical, 1984714

Cross-Series Compatibility
Virtually all Data Translation data acquisition modules are compatible
with the DT-Open Layers® software standard. This means any application
developed with one of Data Translation’s software products can easily be
upgrade to a new Data Translation module with little to no reprogrammingneeded.

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DT9828-Datasheet		

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June 2017. Rev 5© Measurement Computing Corporation