User Programmable for Type J, K, T, E, R, S, B, N Thermocouple or Voltage Input
Free Windows Software Suite Available for Download from OMEGA - DAQ Central Menu Driven Windows Software and Also .NET API/Driver for Visual Basic, C#, and Visual C++ for Windows XP, Vista and Windows 7
Powered Directly by USB Port or External DC Power Supply
500 V Isolation Between Input and PC for Safe and Noise-Free Measurements
The OM-DAQ-USB-2401 is a portable USB 2.0 full speed thermocouple/voltage input data acquisition module (fully compatible with both USB 1.1 and USB 2.0 ports) that can be used with either desktop or laptop PCs. This stand-alone module draws power from the USB port to operate and has 500V isolation to PC. An external power supply (optional) can be used. The compact, modular packaging ensures ease of use in a variety of applications. Units can be DIN rail or wall mounted with the included hardware or easily operated on a bench.
Software Configurable Channels
All configurable options (including individual channel input type and range) are software programmable. The OM-DAQ-USB-2401 is user programmable for thermocouple types J/K/T/E/R/S/B/N and voltage input ranges from ±30 mV to ±10V full scale.
Resolution and Speed
Even with it's high 24-bit resolution, all analog input channels can be measured sequentially at about 1 ms per channel. A total of 1000 samples per second can be taken, divided across all active channels.*
Free Windows Software Suite
OMEGA® DAQ Central Software Data Displays
A free Windows Software Suite that includes the DAQ Central menu driven Windows software is available for download from OMEGA. DAQ Central allows charting, data logging, file storage and virtual instrument viewing (digital meters, dial meters, bar graphs) of data in real time. No programming is required - simply point, click, and drag desired display options to create a virtual display screen. Additionally, for those users who would like to design and develop their own custom application program, the software suite includes a .NET driver for C#, Visual Basic and Visual C++. DAQ Central will run in demo mode allowing you to preview all the different functions in the software. Click on the Software button above to download the DAQ Central software and take a test drive!
SPECIFICATIONS General Isolation: 500V from PC External Excitation Output Voltage: 12 Vdc regulated, max total current output 67 mA Power Requirements: Powered direct from USB port, max 500 mA, or from external 7.5 to 12 Vdc Environmental: 0 to 50°C (0 to 122°F) 95% RH (non-condensing) Operating Temperature: 0 to 50°C (32 to 122°F), 0 to 95% RH non-condensing Storage Temperature: -40 to 85°C (-40 to 185°F) Weight: 0.23 kg (0.5 lb) Dimensions: 107 W x 128 L x 39 mm H (4.2 x 5.1 x 1.5") Input Voltage Range: Software programmable on a per-channel basis differential/single-ended
-10 to 10V -500 to 500 mV
-5 to 5V -250 to 250 mV
-2.5 to 2.5V -125 to 125 mV
-2 to 2V -75 to 75 mV
-1 to 1V -30 to 30 mV TC Input Range Type J: -18 to 1200°C (0 to 2192°F) Type K: -129 to 1372°C (-200 to 2502°F) Type T: -101 to 400°C (-150 to 752°F) Type E: -184 to 1000°C (-300 to 1832°F) Type R: 204 to 1768°C (400 to 3214°F) Type S: 204 to 1768°C (400 to 3214°F) Type B: 538 to 1820°C (1000 to 3308°F) Type N: -129 to 1300°C (-200 to 2372°F) TC Input Thermocouple Accuracy: In very slow mode, 24 bit resolution
J = ±1.1°C
K = ±1.2°C
T = ±1.1°C
E = ±1.0°C
R = ±2.5°C
S = ±2.6°C
B = ±3.3°C
N = ±1.5°C Cold Junction Compensation Accuracy: ±1.0°C Analog Input Accuracy: Differential Input: In very slow mode, 0.015% of reading +0.004% of range +10uV (exclusive of noise) Single-End Input: In very slow mode, 0.05% of reading +0.01% of range +50uV (exclusive of noise) USB Device Type: USB 2.0 (full-speed) Device Compatibility: USB 1.1, USB 2.0 Power Supply: From USB or 9 Vdc universal adaptor (included) DIN Rail Mounted for Rack Application: Optional Open Thermocouple Detect: Automatically enable when a channel is configured for a thermocouple sensor
† All amounts shown in USD Note: *At highest scan rate, 1000 samples/sec +/- 1% with one channel on, +/- 5% with all channels on. Each unit comes complete with quick start guide, USB cable, hardware for benchtop, DIN rail and wall mount, 4 terminal blocks, 9 Vdc universal power adaptor, OMEGA screwdriver, and 2 Type K thermocouples with stripped leads (TC-TT-K-24-36). Free DAQ Central software available for download from OMEGA.
CAL-3 default input is K Type T/C in Deg_C, and please contact sales if other input types are needed.
Ordering Example: (1) OM-DAQ-USB-2401 Data Acquisition Module, $580.00 plus (1) OM-DAQ-USB-TB Spare Terminal Blocks (Pack of 4), $26.50, $580.00 + 26.50 = $606.50
Omega Data Logging & Monitoring Software (OEG) w/ OPC UA/DA
Rated 2 out of
OM-DAQ-USB-2400 - Beware when using w/ TCsI purchased four of these units (over time) for use with various thermal experiments involving building assemblies (temperature ranged from 0 to 100F). With 8 differential channels on each unit, this model seemed like a bargain and I've always looked to Omega for easy online shopping and competitive prices.
When I started pairing these units together, I noticed pretty significant disagreements between TC readings when calibrating multiple devices at once. This disagreement wasn't resolved with offsets and scaling. I thought my devices needed calibrated, but digging deeper in the specs, I found the combined TC and cold junction compensation error for these units are +/-4F...not good for measurements requiring minimal absolute error, and worse than some of my old Omega handheld loggers. It would have been nice for the specs to provide the total measurement error, with CJC and TC errors together, as other products usually list them.
Using this model for analog voltage signal logging has worked well, on the other hand, and the software is simple and easy to use.
I'm upgrading to a DAQ-2416 to get better accuracy and I hope I can get more out of this unit even though the $$ per TC channel isn't that different from the USB-2400.
Date published: 2016-12-19
Rated 1 out of
Did not live up to expectations.The OM-DAQ-USB-2401 was acquired for the purpose of running 5 to 8 load cells. It was recommended specifically for the job, by an Omega support engineer on the phone support line.
When received, we found that the label on the top, identifying the ports, was 180 degrees off. We also found that the unit is very restricted with regards to excitation current! It is only capable of feeding 2 load cells, not 8.