AC & DC Current Data Loggers and Sensors

Onset offers a range of AC and DC voltage data loggers to help keep building equipment up and running optimally and ensure facilities are operating safely and efficiently. Select a cost-effective, easy-to-use voltage data logger that meets your needs from the choices below.

Results: 1 to 16 of 31
  • T-EG-x000-2775

    Rope CTs are excellent for bus-bars and large switch-gear applications. Self-powered rope CTs are flexible and easy to install, but will not be accurate below 30A. Each CT includes the two-pin CT connector plug.

    Technical Specifications

    • 333 mVrms at rated output
    • Accurate within 1% from 30A to stated current rating
    • 6' twisted pair lead with CT connector
    • Note: 30A minimum current required at all times. No external integrator required
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  • EG4115

    The EG4115 Core is a 15-channel energy meter with 0.5% revenue-grade accuracy compliance and the ability to measure residential or commercial circuit panels, up to 3-phase 277/480VAC and 6900A. The meter has HomePlug AV powerline communication, an Ethernet port, and 2 USB ports for additional options, like WiFi. The embedded web server lets you connect to the interface over the internet or on a local area network. Each unit has a data logger that stores up to 64 data points for the lifetime of the hardware, and you can access data as granular as 1-second averages for the most recent hour of recording. The EG4115 Core is an accurate and flexible solution for monitoring multiple circuits in any residential or commercial energy monitoring application.

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  • T-EG-xxxx-xxxx

    Split-core CTs from J&D Sensing offer a well constructed hinged body and are accurate to +/-1% from 1%-100% of their stated current rating. The small interval for physical size options (10mm/0.39", 24mm/0.94", and 36mm/1.42") allow for a flexible installation. Each CT size has a hinge and clipping mechanism, making it easy to close the CT in tight situations.

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  • EG4130

    The EG4130 Pro combines an energy meter, data logger, and a web server. This powerful combination lets you measure, store and retrieve (V, A, VAr, kWh, etc.) data directly from the device or from a remote location via the internet. You can view historical and live data for the lifetime of the hardware with the unit’s convenient user interface (UI). Users have access to real-time values, long-term reports, an interactive graphical interface, and many other tools.

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  • UX120-018

    Onset's HOBO Plug Load Data Logger is a high-accuracy, easy-to-deploy data logger that measures and records the power and energy consumption of 120V plug loads from office equipment, vending machines, and other devices.

    Accurate and Rugged

    The UL certified logger provides 0.5% measurement accuracy with a measurement resolution of 1 watt, making it an ideal choice for building audits where detailed energy use data is required. The rugged housing is designed to withstand the rigors of real-world handling, providing reliable performance despite bumps, drops, and use under desks.

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  • UX120-006M

    The HOBO UX120-006M Analog Data Logger is a high-performance, LCD display data logger for building performance monitoring applications.

    As Onset’s highest-accuracy data logger, it provides twice the accuracy of previous models, a deployment-friendly LCD, and flexible support up to four external sensors for measuring temperature, current, CO2, voltage, and more.

    The data logger is ideal for energy audits, building commissioning studies, equipment scheduling, and more.

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  • T-ACT-0750-020

    The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.
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  • T-ACT-0750-050

    The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.

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  • T-ACT-0750-100

    The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.

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  • T-ACT-0750-250

    The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.

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  • H22-001

    Monitor energy and industrial equipment with this 15-channel data logger (Part # H22-001). With multiple channels, energy and facility managers can quickly and easily detect and address a variety of issues relating to HVAC, machinery, and other systems.  The HOBO H22-001 Energy Data Logger is modular and more economic than its alternatives because a toolbox full of data loggers is not necessary.

    Deploy this product with a variety of pre-defined plug-and-play smart sensors to create a robust monitoring system. Compatible with HOBOware® software, researchers can conduct effective data analysis in minutes.

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  • T-MAG-0400-20

    The small size 20 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage. This CT provides a 0 to .333 Volt AC output proportional to current flow and is used with Onset data loggers via the FlexSmart TRMS module and with kWh transducers (WattNodes) for True RMS measurement of sinusoidal and non-sinusoidal waveforms. The result is an accurate current measurement for many types of electrical equipment.

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  • T-MAG-0400-50

    The small size 50 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage. This CT provides a 0 to .333 Volt AC output proportional to current flow and is used with Onset data loggers via the FlexSmart TRMS module and with kWh transducers (WattNodes) for True RMS measurement of sinusoidal and non-sinusoidal waveforms. The result is an accurate current measurement for many types of electrical equipment.

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  • T-MAG-0400-75

    The small size 75 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage. This CT provides a 0 to .333 Volt AC output proportional to current flow and is used with Onset data loggers via the FlexSmart TRMS module and with kWh transducers (WattNodes) for True RMS measurement of sinusoidal and non-sinusoidal waveforms. The result is an accurate current measurement for many types of electrical equipment.

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  • T-MAG-0400-05

    The small size 5 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage. This CT provides a .333 Volt AC output proportional to current flow and is used with Onset data loggers via the FlexSmart TRMS module and with kWh transducers (WattNodes) for True RMS measurement of sinusoidal and non-sinusoidal waveforms. The result is an accurate current measurement for many types of electrical equipment.

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  • ZW-006

    The HOBO® ZW-006 is a 4-channel wireless data node with four analog ports. It wirelessly transmits data in real time, reducing the costs and inconvenience associated with manual data offload.

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