USB Powered Acquisition Modules for Thermocouples Process Signals

* The OMB-DAQ-54 does not have frequency, digital I/O or expansion capabilty.

The OMB-DAQ-54, OMB-DAQ-55 and OMB-DAQ-56 Personal Daqs are full-featured data acquisition products that utilize the Universal Serial Bus (USB), which is built into almost every new PC. Designed for high accuracy and resolution, the 22-bit OMB-DAQ-54/55/56 data acquisition systems directly measure multiple channels of voltage, thermocouple, pulse, frequency, and digital I/O (the OMB-DAQ-54 does not have digital, frequency I/O). A single cable to the PC provides high-speed communication and power to the OMB-DAQ-54/55/56. No additional batteries or power supplies are required, except when using bus-powered hubs.

The OMB-DAQ-54/55/56 modules are the first products in a new family of low-cost, USB-based products from OMEGA. Because of the strict power limitations of the USB, the modules incorporate special powermanagement circuitry to ensure adherence to USB specifications.

The OMB-DAQ-54/55/56 avoid many of the limitations of PC-Card (PCMCIA) data acquisition devices and offer advantages over many PC plug-in data acquisition boards as well.

The OMB-DAQ-54 data acquisition system offers 10 single-ended or 5 differential analog (up to ±20 V full scale) or thermocouple input channels with 16 programmable ranges and 500 V optical isolation.

The OMB-DAQ-55 offers 10 single-ended or 5 differential analog (up to ±20 V full scale) or thermocouple input channels,16 programmable ranges, 500 V optical isolation, 8 digital I/O lines, and 2 frequency/ pulse/ duty-cycle channels.

The OMB-DAQ-56 offers twice the I/O capacity as the OMB-DAQ-55 in the same size package.

To simplify attachment of signals and transducers, the OMB-DAQ-54/55/56 modules feature convenient, removable screw-terminal input connections.

SOFTWARE
Personal DaqView^TM a graphical data acquisition software, is an easy-to-use yet powerful application is provided with the OMB-DAQ-54, OMB-DAQ-55 and OMB-DAQ-56 at no additional charge. The software allows users to configure a test, and display or record data within minutes, without programming.

Personal DaqView lets the user • Select one of any OMB-DAQ devices connected to the system • Set up, configure and display analog, frequency, counter and digital I/O channels in real time • Easily and quickly configure acquisition parameters such as trigger events, stop events and acquisition scan rates • View real-time analog, frequency, and digital I/O using extensive charting and metering displays • Acquire analog, frequency, and digital I/O channels to disk in real time • AView acquisition status at a glance, including triggered time/date, acquisition progress, as well as acquisition destination file Real-Time Displays Personal DaqView allows the creation of real-time displays using built-in display options, including digital, dial meter, bar graph, and strip chart displays. No programming is required — simply point, click, and drag desired display options to create a visual display screen. The OMB-DAQ-54/55/56 are also shipped with PostView, a postacquisition application that permits you to display acquired data previously saved to a file. Drivers for Visual Basic, Delphi and C++ for Windows XP SP2 and SP3/Vista/7 are also included. In addition, drivers are available for icon-based software packages, such as DASYLab and LabVIEW.

Personal DaqView Plus^TM
The optional Personal DaqView Plus software provides advanced charting capabilities, including multiple traces per chart, multiple chart groups, and support for up to 100 Personal Daq devices attached to one PC.

•	Allows display groups to be created for customized viewing
•	Supports up to 100 Personal Daq devices

Personal DaqViewXL^TM
The optional Personal DaqViewXL software allows Personal DaqView or Personal DaqViewXL Plus to execute seamlessly from within Microsoft® Excel’s tool palette. Acquired measurements are inserted directly into an Excel spreadsheet in real time.

•	Allows formula creation on acquired data
•	Provides control of acquisition from spreadsheet

Personal DaqViewXL Plus^TM
The optional Personal DaqViewXL Plus combines the features of Personal DaqView Plus and Personal DaqViewXL into one package.


Expandable Inputs
The OMB-DAQ-55 and OMB-DAQ-56 are expandable through the use of the OMB-PDQ1 and OMB-PDQ2 expansion modules as shown in the table below. The OMB-DAQ54 does not have any expansion capability.

OMB-DAQ and Expansion System Channel Capacities
Product or System	Volts/TC Inputs*	Digital I/O	Freq/Pulse Inputs
OMB-DAQ-54	5 DE, 10 SE	None	None
OMB-DAQ-55	5 DE, 10 SE	8	2
OMB-DAQ-56	10 DE, 20 SE	16	4
OMB-PDQ1 Expansion Module	10 DE, 20 SE	16	-
OMB-PDQ2 Expansion Module	20 DE, 40 SE	-	-
OMB-DAQ-55 + OMB-PDQ1	15 DE, 30 SE	24	2
OMB-DAQ-55 + OMB-PDQ2	25 DE, 50 SE	8	2
OMB-DAQ-56 + OMB-PDQ1	20 DE, 40 SE	32	4
OMB-DAQ-56 + OMB-PDQ2	30 DE, 60 SE	16	4

* DE = Differential Inputs, SE= Single-endied inputs.
Thermocouples are only available as differential inputs(DE)

Thermocouple Inputs and Ranges Thermocouple Type Temperature Ranges J -100 to 700°C K -200 to 1200°C T -100 to 400°C E -100 to 500°C R 400 to 1400°C S 400 to 1400°C B 700 to 1400°C N -100 to 700°C

Input Voltage Ranges Differential Single-ended -20 V to +20 V 10 V to +20 V -10 V to +10 V 10 V to +10 V -5 V to +5 V 5 V to +5 V -4 V to +4 V 4 V to +4 V -2.5 V to +2.5 V 2.5 V to +2.5 V -2 V to +2 V 2 V to +2 V -1.25 V to +1.25 V 1.25 V to +1.25 V -1 V to +1V 1 V to +1 V -625 mV to +625 mV 625 mV to +625 mV -500 mV to +500 mV 500 mV to +500 mV -312 mV to +312 mV 312 mV to +312 mV -250 mV to +250 mV 250 mV to +250 mV -156 mV to +156 mV 156 mV to +156 mV -125 mV to +125 mV 125 mV to +125 mV -62 mV to +62 mV 62 mV to +62 mV -31 mV to +31 mV 31 mV to +31 mV

Speed Versus Resolution

Measurement Duration	Max. Sample Rate (Continous Calibration Disabled)				Resolution (Bits RMS) (±4V)
	Voltage		Thermocouple
	1 Channel/Scan	10 Channel/Scan	1 Channel/Scan	10 Channel/Scan
610 ms (50/60 Hz Rejection)	1.6 Hz (625 ms)	0.16 Hz (6.25 secs)	1.5 Hz (667 ms)	0.16 Hz (6.25 secs)	22
12.5 ms	66 Hz (15 ms)	7.8 Hz (128 ms)	25 Hz (40 ms)	6 Hz (167 ms)	15

Specifications General Isolation: 500 V from PC Power Requirements: Powered from USB, or from external +6 to +16 VDC when used with a bus-powered hub Environmental: 0 to 50°C (0 to 122°F) 95% RH (non-condensing) Dimensions: 92 W x 182 L x 45 mm H (3.6 x 7.1 x 1.6") Software: WIN XP SP2 and SP3/Vista/7 Analog Specifications Each channel is configurable for single-ended or differential, Volts, or thermocouple inputs OMB-DAQ-54, OMB-DAQ-55: 10 single-ended, 5 differential; Volts or TC channels OMB-DAQ-56: 20 single-ended, 10 differential; Volts or TC channels Thermocouple Type and Temperature Ranges: J (-100 to 700°C), K (-200 to 1200°C), T (-100 to 400°C), E (-100 to 500°C), R (400 to 1400°C), S (400 to 1400°C), B (700 to 1400°C), N (-100 to 700°C) Thermocouple Accuracy: In very slow mode, 22 bit resolution, includes cold junction compensation error: 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: (±0.5°C), Over-Voltage Protection: ±45 V relative to analog Lo AC Common Mode Rejection: >120 dB @ 60 Hz Channel-to-Channel Crosstalk: <-120 dB (DC to 100 Hz); Accuracy: OMB-DAQ-55/56: 0.015% of reading +0.002% of range (exclusive of noise) OMB-DAQ-54: 0.015% of reading +0.004% of range (exclusive of noise) Input Resistance: >10 M Ohm (SE), >20 M Ohm (DE) Bias Current: <1 nA (0-35°C)

Frequency Measurements (OMB-DAQ-55 and OMB-DAQ-56 only) OMB-DAQ-55: 2 frequency/pulse input channels OMB-DAQ-56: 4 frequency/pulse input channels Operating Modes: Pulse count (totalize), duty-cycle, and frequency Frequency Response: DC to 1 MHz Input Range: ±15 V absolute maximum <1.3 V (low), >3.8 V (high) Pull-Up Resistor: 27 K Ohm to +5 V for switch or relay sensing Debouncing: None, 0.8, 3.2, or 13 mSec. (software selectable) Totalize: Up to 2 32 counts/scan Frequency & Duty-Cycle (OMB-DAQ-55 and OMB-DAQ-56 only) Resolution: 7 digits. Actual resolution depends on scan rate. At 10 scans/s, resolution is 5 digits (10 ppm); at 1 scan/s, 6 digits (1 ppm) Digital I/O (OMB-DAQ-55 and OMB-DAQ-56 only) Each I/O line is individually programmable as input or output. OMB-DAQ-55: 8 digital I/O lines OMB-DAQ-56: 16 digital I/O lines Each I/O line includes an open-collector driver with a 27 K Ohm pull-up resistor to +5 V for output, and a Schmitt-trigger input buffer Digital Input Voltage Range: ±15 V Thresholds: <1.3 V (low), >3.8 V (high) Digital Output Maximum Switch Voltage: 0 to +15 Vdc (20 V for <1 minute) Maximum Switch Current: 150 mA/output continuous, 500 mA/output peak (<100 µs), 150 mA total continuous (per bank of 8 outputs) Output Resistance: 10 Ohms max