Used Data Acquisition Systems (DAQ)
317 units in stock — a mix of standalone bench DAQ instruments and VME/IndustryPack/PC104 board-level acquisition modules from Abaco/VMIC, Keithley, Keysight/Agilent, IOtech, and RTD Embedded Technologies. Ships from Pleasant Grove, UT.
105-AMX Data Acquisition (1 unit)
ACTIS Computer Data Acquisition (1 unit)
Abaco Systems Data Acquisition (1 unit)
Abaco Systems / Condor Engineering Data Acquisition (1 unit)
Abaco Systems / SBS / BSI Data Acquisition (1 unit)
Abaco Systems / SBS / Greenspring Data Acquisition (8 units)
Abaco Systems / VMIC Data Acquisition (20 units)
Acqiris Data Acquisition (4 units)
Acromag Data Acquisition (7 units)
Acromag / Xembedded / Xycom Data Acquisition (1 unit)
Active Silicon Data Acquisition (2 units)
Adlink Data Acquisition (2 units)
Advantech Data Acquisition (1 unit)
Advantest Data Acquisition (1 unit)
Agilent Data Acquisition (2 units)
Agilent / Keysight Data Acquisition (74 units)
Agilent/Varian Data Acquisition (1 unit)
Alphi Technology Data Acquisition (1 unit)
Alstom Data Acquisition (1 unit)
Ametek / EG&G / Princeton Applied Research Data Acquisition (1 unit)
Ametek / Ortec Data Acquisition (1 unit)
Ametek / VTI Instruments / VXI Technology Data Acquisition (2 units)
Analogic Data Acquisition (1 unit)
Apex Embedded Systems Data Acquisition (1 unit)
Astro-Med Data Acquisition (4 units)
AstroNova / Astro-Med Data Acquisition (1 unit)
Banner Engineering Data Acquisition (1 unit)
Brookhaven Data Acquisition (1 unit)
Bustec Data Acquisition (1 unit)
CimWorks / GageTalker Data Acquisition (3 units)
Curtiss-Wright / ACRA Control Data Acquisition (1 unit)
Curtiss-Wright / DY-4 Data Acquisition (1 unit)
Curtiss-Wright / Pentland Systems Data Acquisition (2 units)
Curtiss-Wright / Systran Data Acquisition (5 units)
Curtiss-Wright / VMETRO Data Acquisition (2 units)
DDC Data Acquisition (1 unit)
DLP Design Data Acquisition (1 unit)
Daikin / McQuay Data Acquisition (1 unit)
Dewetron Data Acquisition (2 units)
Diamond Systems Data Acquisition (1 unit)
Digi-Labs Data Acquisition (1 unit)
Dwyer/Omega Data Acquisition (2 units)
DynamicSignals / Kinetic Systems Data Acquisition (1 unit)
Emerson Motion Control Data Acquisition (1 unit)
Eurotech Data Acquisition (1 unit)
Fluke Data Acquisition (5 units)
GE / Bently Nevada Data Acquisition (6 units)
GE Fanuc / ICS Data Acquisition (3 units)
General Dynamics / Veridian / Veda Systems Data Acquisition (1 unit)
General Standards Data Acquisition (2 units)
HP Data Acquisition (2 units)
HP / Agilent Data Acquisition (1 unit)
IOtech Data Acquisition (3 units)
IXI Technology / Sabtech Industries Data Acquisition (1 unit)
Joerger Enterprises Data Acquisition (2 units)
Keithley Data Acquisition (49 units)
Keithley / MetraByte Data Acquisition (5 units)
Keysight Data Acquisition (1 unit)
Keysight / Agilent Data Acquisition (5 units)
Keysight / Agilent / HP Data Acquisition (13 units)
Kontron / Thales / Matrix Data Acquisition (3 units)
Kulicke and Soffa Data Acquisition (1 unit)
L3 Communications Data Acquisition (1 unit)
NI Data Acquisition (9 units)
RTD Embedded Technologies Data Acquisition (2 units)
Rigol Data Acquisition (2 units)
Rockwell / Allen-Bradley Data Acquisition (1 unit)
Schneider Electric / Eurotherm / Chessell Data Acquisition (1 unit)
Schneider Electric / Invensys / Foxboro Data Acquisition (3 units)
Stanford Research Data Acquisition (2 units)
Stanford Research Systems Data Acquisition (5 units)
Tektronix Data Acquisition (1 unit)
Yokogawa Data Acquisition (15 units)
dSPACE Data Acquisition (2 units)
Standalone Bench DAQ Systems
IOtech's DaqBook line is a rugged, portable DAQ chassis with plug-in signal conditioning, built to connect directly to a PC for field or bench acquisition work without needing a card slot in the host computer. Keithley's switch-and-measure systems pair 7000-series scanner cards with a digital multimeter to multiplex dozens or hundreds of measurement points through a single meter under software control — the practical way to get high channel-count measurement without a separate meter per test point. Keysight/Agilent's 34970A/34980A data acquisition and switch units serve the same standalone role.
VME and IndustryPack Board-Level Modules
A large share of this category is board-level hardware rather than complete instruments: Abaco Systems (formerly VMIC) VME analog and digital I/O boards, and IndustryPack modules that plug into a carrier card inside a VME, PCI, or cPCI host. This class of hardware is common in military, aerospace, and industrial automated test systems, where the DAQ function is one card among several in a shared chassis rather than a standalone box. The form factor is the deciding constraint here — a VME card is only useful if you already have (or are building) a VME-based system to put it in.
Embedded and PC/104 Modules
RTD Embedded Technologies builds PC/104 form-factor DAQ boards aimed at rugged, embedded applications where a full-size chassis isn't practical. These stack directly onto a PC/104 embedded computer rather than needing a separate carrier, which makes them a different integration path from the VME/IndustryPack products above, even though the underlying acquisition function is similar.
What to Check Before Buying
For board-level products, confirm the bus/form factor matches your existing chassis or carrier before ordering — VME, IndustryPack, and PC/104 are not interchangeable, and a perfectly functional card is useless without the right host. For any acquisition hardware handling thermocouple, RTD, or strain-gauge inputs, check whether signal conditioning is built in or expected upstream, since raw ADC inputs generally aren't set up to read those sensor types directly. And for older boards, ask about driver/software support — some of this hardware predates modern operating systems and is realistically suited to repairing or extending an existing system rather than building a new one from scratch.
Calibration for DAQ Hardware
Standalone bench DAQ instruments and switch/scanner systems are typically calibrated as complete units against a traceable reference, the same as any other bench measurement instrument. Board-level VME/IndustryPack modules are more often functionally verified and calibrated as part of the host system they're installed in, since a bare card has no independent front panel or reference to calibrate against on its own. See all calibration services →
Frequently Asked Questions
What is the difference between a standalone DAQ instrument and a DAQ board or module? +
A standalone DAQ instrument — the IOtech DaqBook, or a Keithley switch/scanner system paired with a DMM — is a complete, self-contained unit with its own chassis, power supply, and (usually) a way to connect directly to a PC over USB or GPIB. A DAQ board or module — Abaco/VMIC VME analog I/O boards, IndustryPack modules, PC/104 boards from RTD Embedded Technologies — has no enclosure or power supply of its own; it's a card meant to be installed inside a VME crate, IndustryPack carrier, or embedded chassis as one component of a larger system. Both digitize real-world signals, but one is ready to use out of the box and the other requires a compatible host system.
Why do so many of these boards need a specific chassis or carrier to work? +
Form factor and bus protocol determine everything. A VME card only works in a VME crate with a compatible backplane; an IndustryPack module needs an IndustryPack carrier card, which itself has to be installed in a VME, PCI, or cPCI host. This is the single most important thing to check before buying a board-level DAQ product — the card being electrically sound doesn't help if you don't have the right chassis or carrier to put it in.
What is a Keithley switch/scanner system used for? +
Keithley's 7000-series switch and scanner cards pair with a digital multimeter to multiplex many measurement points — dozens or hundreds of sensors or test points — through one meter, one channel at a time, under software control. It's a way to get high channel-count measurement capability without buying a separate meter for every point, commonly used in production test, burn-in racks, and multi-point environmental monitoring.
Will an older VME or IndustryPack DAQ board work with a modern PC and operating system? +
Not directly — these boards are designed for VME/VXI crates or embedded PC/104-style systems, not a standard desktop PC, and the driver software for many of these products predates modern Windows or was written for a specific real-time OS. If you're sourcing one of these to repair or extend an existing system, the practical requirement is usually that the host chassis and software environment already exist and match what the board expects — this is surplus/replacement hardware for an existing automated test or data-acquisition system, not a general-purpose acquisition solution for a new PC-based setup.
Do I need separate signal conditioning for thermocouple or strain-gauge inputs? +
Often yes. A raw analog-to-digital converter board typically expects a voltage or current signal within its input range; a thermocouple's millivolt-level output or a strain gauge's bridge signal usually needs amplification, cold-junction compensation, or bridge excitation upstream of the ADC itself. Check whether the board or system you're buying includes that signal conditioning built in, or whether it expects a separately conditioned input.
Need a specific bus type, channel count, or resolution?
Tell us your chassis/carrier type and channel requirements, and we'll check our incoming stock.
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