4-Channel Universal Analog Input USB Data
4-Channel Universal Analog Input USB Data Acquisition Module
OM-USB-2404-UI
U 4 Channels of Universal Analog Input
U 24-Bit Resolution
U Measures: Voltage (±125 mV, ±1V, ±4V, ±15V, ±60V),
Current (±25 mA), Thermocouples (J, K, T, E, R, S, N,
B), RTDs (Pt100, Pt1000, 3- and 4-Wire), Resistance
(2- and 4-Wire), and Bridge-Based Sensors
(Quarter-, Half-, and Full-Bridge)
U Simultaneous Sampling at Up to 100 S/s
Per Channel
U Built-In Thermistor for Cold-Junction
Compensation (CJC)
U Six-Position Input Screw Terminal Allows
Different Measurement Types to be Performed
On Each Channel
The new OM-USB-2404-UI provides four channels
of 24-bit universal analog input with integrated signal
conditioning. The device can be used to measure a
variety of sensor types such as RTDs, thermocouples,
load cells, and other powered sensors. The four
channels are individually configurable, so a different
measurement type can be performed on each channel.
All channels are measured simultaneously at up to
100 S/s per channel.
The OM-USB-2404-UI can perform
the following measurements:
• Voltage
• Current
• Thermocouple
• RTD (3- and 4-wire)
• Resistance (2- and 4-wire)
• Bridge-based sensors (quarter-, half-, and full-bridge)
Measurement ranges vary for each type of
measurement.
OM-USB-2404-UI shown smaller than actual size.
The device features a built-in current and voltage
excitation. The excitation circuit is protected from
overcurrent and overvoltage fault conditions. Each
channel also has a built-in thermistor for cold-junction
compensation (CJC) calculations when measuring
thermocouples. An analog pre-filter removes noise
that may be present in the signals prior to conversion.
With 250 Vac channel-to-channel and channel-toground isolation, the OM-USB-2404-UI protects the
individual channels and connected computer and
ensures a reliable data stream. Each channel has a
detachable six-position screw terminal block for field
wiring connections.
The OM-USB-2404-UI ships with a 2 m (6') USB
cable and is powered by the 5V USB supply from
your computer. No external power is required.
The OM-USB-2404-UI is a USB 2.0 high-speed device
that is supported under popular Microsoft Windows®
operating systems. The OM-USB-2404-UI is fully
compatible with both USB 1.1 and USB 2.0 ports.
Software
The OM-USB-2404-UI module ships with an
impressive array of software, including the new
TracerDAQ®, a full-featured, out-of-the-box data
logging, viewing, and analysis application. Driver
support and detailed example programs are included
for Universal Library programming libraries for
Microsoft® Visual Studio® programming languages, and
other languages, including DASYLab®, and ULx for NI
LabVIEW® (comprehensive library of Vls and example
programs compatible with 32-bit and 64-bit LabVIEW
v8.5 through 2013) and InstaCal™ installation,
calibration and test utility-powerful solutions for
programmers and nonprogrammers alike. These
modules operate under Microsoft Windows® XP
(32-bit only) and VISTA/7/8 (32-bit and 64-bit)
operating systems.
1
The OM-USB-2404-UI data acquisition module is
supplied with TracerDAQ software which is a collection
of four virtual instrument applications used to
graphically display and store input data and generate
output signals:
• Strip Chart—Log and graph values acquired from
analog inputs, digital inputs, temperature inputs
and counter inputs
• Oscilloscope—Display values acquired from
analog inputs
• Function Generator—Generate waveforms for
analog outputs
• Rate Generator—Generate waveforms for
counter outputs
TracerDAQ Strip Chart.
TracerDAQ PRO is an enhanced version of TracerDAQ.
A comparison of some of the features included in
TracerDAQ vs TracerDAQ PRO is shown below.
Features Comparison
Strip Chart
Feature
TracerDAQ PRO Strip Chart
with Measurements.
TracerDAQ
Analog input, temperature input,
digital input, event counter
48
8
1 million
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Oscilloscope
Feature
TracerDAQ PRO
TracerDAQ
Channel Type
Analog input
Number of Channels2
Measurements Window No
Reference ChannelNo
Math ChannelNo
Function Generator
Feature
TracerDAQ
Analog input
4
Yes
Yes
Yes
TracerDAQ PRO
Channel Type
Analog output Analog output
Number of Channels
1
16
Waveform Types
Sine
Sine, square, triangle, flat, pulse, ramp, random, arbitrary
Duty Cycle NoYes
Phase
NoYes
Gate Ratio NoYes
Rate MultiplierNo Yes
Sweep (Linear and Exponential)No
Yes
Rate Generator
Feature
TracerDAQ
Channel Type
Counter output
Number of Channels1
2
TracerDAQ PRO
Channel Types
Analog input, temperature input, digital input, event counter
Number of Channels8
Number of Lanes2
Maximum Samples per Channel
32,000
Alarm ConditionsNo
Measurements Window No
Enter AnnotationsNo
Software TriggeringNo
Hardware TriggeringNo
Time-of-Day TriggeringNo
Linear ScalingNo
TracerDAQ PRO
Counter output
20
SPECIFICATIONS
ANALOG INPUT
Number of Channels: 4
A/D Converter Resolution: 24-bit
A/D Converter Type: Delta-Sigma with analog
pre-filtering
Sampling Mode: Simultaneous
TEDS Sensor Type Supported: IEEE 1451.4 TEDS
Class II (interface)
Input Mode: Voltage, current, resistance (2- and 4-wire),
RTD (3- and 4-wire), thermocouple, quarter-bridge,
half-bridge, full-bridge
Conversion Time (No channels in TC mode)
High Speed: 10 ms for all channels
Best 60 Hz Rejection: 110 ms for all channels
Best 50 Hz Rejection: 130 ms for all channels
High Resolution: 500 ms for all channels
Conversion Time (One or More Channels in TC Mode)
High Speed: 20 ms for all channels
Best 60 Hz Rejection: 120 ms for all channels
Best 50 Hz Rejection: 140 ms for all channels
High Resolution: 510 ms for all channels
Overvoltage Protection
Terminals 1 and 2: ±30V
Terminals 3 Through 6, Across any Combination:
±60V
Input Impedance
Voltage Mode (±60V, ±15V, ±4V): 1 MΩ
Current Mode: <40 Ω
All Other Modes: >1GΩ
Input Bias Current: <1nA
Integral Non-Linearity (INL): ±15 ppm
Common Mode Rejection Ratio (CMRR): >100 dB
Normal Mode Rejection Ratio (NMRR)
Best 60 Hz Rejection: 90 dB at 60 Hz
Best 50 Hz Rejection: 80 dB at 50 Hz
High Resolution: 65 dB at 50 Hz and 60 Hz
INPUT MODE RANGES
Input Mode
Nominal Range(s)
Actual Range(s)
Voltage
±60V, ±15V, ±4V, ±1V, ±125 mV
±60V, ±15V, ±4V, ±1V, ±125 mV
Current
±25 mA
±25 mA
4-Wire and 2-Wire Resistance
10 kΩ, 1 kΩ
10.5 kΩ, 1.05 kΩ
Thermocouple
±125 mV
±125 mV
4-Wire and 3-Wire RTD
Pt1000, Pt100
5.05 kΩ, 505 Ω
Quarter-Bridge
350 Ω, 120 Ω
390 Ω, 150 Ω
Half-Bridge
±500 mV/V
±500 mV/V
Full-Bridge
±62.5 mV/V, ±7.8 mV/V
±62.5 mV/V, ±7.8125 mV/V
ACCURACY
Gain Error (Percent of Reading) Offset Error (ppm of Range)
Mode, Range
Typical 25ºC, ±5ºC, -40 to 70ºC Maximum
Voltage, ±60V
Voltage, ±15V
Voltage, ±4V
Voltage, ±1V
Voltage/Thermocouple, ±125 mV
Current, ±25 mA
4-Wire and 2-Wire (Note 1) Resistance, 10 kΩ
4-Wire and 2-Wire (Note 1) Resistance, 1 kΩ
4-Wire and 3-Wire RTD, Pt1000
4-Wire and 3-Wire RTD, Pt100
Quarter-Bridge, 350 Ω
Quarter-Bridge, 120 Ω
Half-Bridge, ±500 mV/V
Full-Bridge, ±62.5 mV/V
Full-Bridge, ±7.8 mV/V
Cold-Junction Compensation Sensor Accuracy
±0.3, ±0.4
±0.3, ±0.4
±0.3, ±0.4
±0.1, ±0.18
±0.1, ±0.18
±0.1, ±0.6
±0.1, ±0.5
±0.1, ±0.5
±0.1, ±0.5
±0.1, ±0.5
±0.1, ±0.5
±0.1, ±0.5
±0.03, ±0.07
±0.03, ±0.08
±0.03, ±0.08
±20, ±50
±60, ±180
±240, ±720
±15, ±45
±120, ±360
±30, ±100
±120, ±320
±1200, ±3200
±240, ±640
±2400, ±6400
±2400, ±6400
±2400, ±6400
±300, ±450
±300, ±1000
±2200, ±8000
±1ºC, typical
Note 1: 2-wire resistance mode accuracy depends on the lead wire resistance. This table assumes 0 Ω of lead wire resistance.
3
STABILITY
Measurement Conditions
Gain Drift (ppm of reading/ºC)
Offset Drift (ppm of range/ºC)
±20
±20
±20
±10
±10
±15
±15
±15
±15
±15
±15
±15
±3
±3
±3
±0.2
±0.8
±3.2
±0.2
±1.6
±0.4
±3
±30
±6
±60
±120
±240
±20
±20
±20
Voltage, ±60V
Voltage, ±15V
Voltage, ±4V
Voltage, ±1V
Voltage/Thermocouple, ±125 mV
Current, ±25 mA
4-Wire and 2-Wire Resistance, 10 kΩ
4-Wire and 2-Wire Resistance, 1 kΩ
4-Wire and 3-Wire RTD, Pt1000
4-Wire and 3-Wire RTD, Pt100
Quarter-Bridge, 350 Ω
Quarter-Bridge, 120 Ω
Half-Bridge, ±500 mV/V
Full-Bridge, ±62.5 mV/V
Full-Bridge, ±7.8 mV/V
INPUT NOISE (ppm of Rangerms)
Conversion Time
Mode, Range
Voltage, ±60V
Voltage, ±15V
Voltage, ±4V
Voltage, ±1V
Voltage/Thermocouple, ±125 mV
Current, ±25 mA
4-Wire and 2-Wire Resistance, 10 kΩ
4-Wire and 2-Wire Resistance, 1 kΩ
4-Wire and 3-Wire RTD, Pt1000
4-Wire and 3-Wire RTD, Pt100
Quarter-Bridge, 350 Ω
Quarter-Bridge, 120 Ω
Half-Bridge, ±500 mV/V
Full-Bridge, ±62.5 mV/V
Full-Bridge, ±7.8 mV/V
High Speed
Best of 60 Hz
Rejection
Best of 50 Hz
Rejection
High Resolution
7.6
10.8
10.8
7.6
10.8
10.8
4.1
7.1
7.6
10.8
5.4
5.4
3.8
5.4
30
1.3
1.9
2.7
1.3
1.9
1.9
1.3
1.8
1.7
1.9
1.0
1.0
0.5
1.0
4.7
1.3
1.9
2.7
1.3
1.9
1.9
0.8
1.2
1.1
1.9
1.0
1.0
0.5
1.0
4.7
0.5
0.7
1.3
0.5
1.0
1.0
0.3
0.7
0.4
0.9
0.7
0.7
0.2
0.8
2.3
Half-Bridge and Full-Bridge Mode Excitation Level
Measurement
Conditions
Half-Bridge
Half-Bridge
Full-Bridge
Full-Bridge
4
Load
Resistance (Ω) Excitation (V)
700
240
350
120
2.5
2.0
2.7
2.2
Resistance, RTD,
and Quarter-Bridge Mode Excitation Level
Load Resistance (Ω)
Excitation (mV)
120
350
1000
10,000
50
150
430
2200
OM-USB-2404-UI shown
smaller than actual size.
GENERAL
Operating Temperature Range: 0 to 60ºC
(32 to 140ºF), 10 to 90% RH non-condensing
Storage Temperature Range: -40 to 85ºC
(-40 to 185ºF), 5 to 95% RH non-condensing
Communications: USB 2.0 Hi-Speed mode (480 Mbps)
is recommended; otherwise USB 1.1 full-speed mode
(12 Mbps)
Current Consumption from USB: 500 mA, maximum
Channel-to-Earth Ground Isolation
Continuous: 250 Vrms (measurement category
II for measurements performed on circuits directly
connected to the electrical distribution system)
Withstand: 2300 Vrms (verified by a 5 second
dielectric withstand test)
SM
OMEGACARESM extended warranty program is
available for models shown on this page. Ask
your sales representative for full details when
SM
Extended Warranty placing an order. OMEGACARE covers parts,
labor and equivalent loaners.
Program
TracerDAQ software (included).
Channel-to-Channel Isolation
Continuous: 250 Vrms (measurement category II for
measurements performed on circuits directly connected
to the electrical distribution system)
Withstand: 1390 Vrms (verified by a 5 second
dielectric withstand test)
Signal I/O Connector: 6-position screw terminals
Screw terminal Wiring: 18 to 28 AWG copper conductor
wire with 7 mm (0.28") of insulation stripped from the end
Maximum Altitude: 2000 m (6562')
Dimensions: 134 L x 143 W x 39 mm H (5.27 x 5.64 x 1.54")
Weight: 567 g (1.25 lb)
To Order
Model No.
Description
OM-USB-2404-UI
4-channel universal analog input USB data acquisition module
OM-ACC-164
Spare 6-position screw terminal connectors for the OM-USB-2404-UI (quantity of 4)
OM-ACC-176
Backshell kit for use with the OM-ACC-164, 6-position connectors (quantity of 4)
SWD-TRACERDAQ-PRO
TracerDAQ PRO software
Comes complete with 2 m (6') USB cable and TracerDAQ software and user manual on CD.
Ordering Example: OM-USB-2404-UI 4-channel universal analog input USB data acquisition module and OCW-1, OMEGACARESM extends
standard 1-year warranty to a total of 2 years.
5
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