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Portable USB thermocouple-voltage input data acquisition module
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
  • 8 Differential or 16 Single- Ended Analog Inputs
  • 24 Bit Resolution with Up to 1000 Samples/Sec
  • User Programmable for Type J, K, T, E, R, S, B, N Thermocouple or Voltage Input
  • Free Windows Software Suite Available for Download from trodeks - 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
  • Provides +12 Vdc Output for Sensor Excitation
 Manuals (contact with email : [email protected])


USB Connection
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

trodeks® DAQ Central Software Data Displays
A free Windows Software Suite that includes the DAQ Central menu driven Windows software is available for download from trodeks. 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!


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
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