Pico Technology 30A AC/DC Precision Current Probe BNC TA189

Description

Product Overview

The Pico Technology TA189 30 A AC/DC precision current probe is engineered for engineers and technicians who need reliable, non‑intrusive current measurement in demanding environments. Built around a closed‑loop Hall effect sensor, the probe delivers true RMS readings for both alternating and direct currents up to 30 amps, eliminating the need to disconnect or interrupt live circuits. Its compact clamp‑on design fits comfortably around conductors ranging from 10 mm to 30 mm, while the integrated BNC connector provides a secure, low‑noise signal path to oscilloscopes, data loggers, or PicoScope units. The probe’s rugged housing meets IEC 61010‑1 safety standards, ensuring durability against mechanical shocks and temperature variations commonly encountered in industrial testing, laboratory research, and field service work. The probe also incorporates a built‑in temperature sensor that monitors the clamp temperature in real time, preventing overheating and extending probe lifespan. Calibration data is stored internally, allowing for quick verification against reference standards without external equipment. With a frequency response up to 100 kHz, the TA189 captures fast transient events, making it suitable for power quality diagnostics, harmonic analysis, and fault detection. The device’s low insertion loss and high common‑mode rejection ratio ensure that measurements remain accurate even in noisy environments, providing confidence for compliance testing and preventive maintenance programs.

Designed to integrate seamlessly with Pico Technology’s extensive measurement ecosystem, the TA189 works hand‑in‑hand with the PicoScope 6 software suite, offering intuitive setup wizards, real‑time waveform visualization, and advanced analysis tools such as FFT, power calculations, and automated reporting. The probe’s BNC interface is compatible with a wide range of third‑party instruments, including high‑performance oscilloscopes, data acquisition modules, and portable recorders, giving users flexibility to choose the platform that best fits their workflow. Optional accessories such as the TA041 differential voltage probe expand the measurement capability to full power analysis, while the included mounting hardware ensures a secure fit on both vertical and horizontal conductors. Together, these features provide a comprehensive solution for electrical engineers, maintenance professionals, and research scientists who demand precision, safety, and ease of use in a single, cost‑effective instrument.

Beyond the hardware, Pico Technology provides a suite of software tools that enhance the usability of the TA189. The integrated PicoScope 6 environment offers drag‑and‑drop measurement templates, automated trigger settings, and real‑time cursor readouts, allowing users to obtain precise current values with minimal configuration. For organizations that require data management and compliance reporting, the software can export measurement data in CSV, MATLAB, and XML formats, facilitating seamless integration into quality management systems. Moreover, Pico’s global network of authorized distributors ensures that spare parts, calibration services, and upgrade options are readily available, reducing downtime and protecting the investment over the product’s lifecycle.

Usage

The TA189 excels in a variety of field and laboratory applications where quick, accurate current measurement is essential. In power distribution facilities, technicians can clamp the probe around feeder cables to monitor load currents during routine inspections, identifying potential overloads before they trigger protective devices. In automotive service bays, the probe enables rapid assessment of battery discharge rates and alternator performance without removing battery terminals, saving time and reducing the risk of accidental short circuits. Its ability to capture both AC and DC components makes it valuable for renewable energy installations, where inverters and solar panels often produce mixed‑signal currents that must be verified for compliance with grid standards. In research laboratories, the probe is frequently paired with high‑speed digitizers to study transient phenomena such as surge currents, switching spikes, and electromagnetic interference. Its low inductance and high bandwidth allow accurate capture of fast rise times, supporting detailed analysis of circuit behavior under stress. Additionally, the probe’s temperature monitoring feature helps safeguard sensitive experiments by alerting users when the measured conductor exceeds predefined thermal limits, thereby preventing damage to components and ensuring repeatable test conditions.

Because the TA189 does not require any physical connection to the conductor’s core, it is ideal for applications where isolation is critical, such as medical device testing, aerospace component verification, and high‑voltage power line diagnostics. The probe’s BNC output can be directly linked to a spectrum analyzer to evaluate harmonic distortion in motor drives, or to a portable recorder for on‑site logging of current profiles over extended periods. When combined with the optional TA041 differential voltage probe, users gain the ability to calculate true power, apparent power, and power factor, providing a complete picture of energy consumption and quality. This versatility makes the TA189 a valuable tool for preventive maintenance programs, energy audits, and educational laboratories that teach fundamental electrical measurement techniques.

Why Choose Us

Pico Technology has built a reputation for delivering high‑precision measurement instruments that combine rigorous engineering with user‑friendly software. The TA189 benefits from the company’s decades of experience in Hall‑effect sensor design, ensuring that the probe provides true RMS accuracy across a wide temperature range and maintains linearity even at the extremes of its measurement envelope. Each unit undergoes a comprehensive factory calibration process traceable to international standards, and a detailed calibration certificate is included with every shipment, giving customers confidence that their measurements are reliable and repeatable. In addition, the probe’s robust mechanical construction features a reinforced clamp made from high‑strength alloy, protecting the sensor from mechanical stress and ensuring a secure grip on conductors even in vibration‑rich environments. The BNC connector is gold‑plated to minimize contact resistance and corrosion, extending the lifespan of the interface and preserving signal integrity over years of operation. These design choices reflect a commitment to durability and performance that aligns with the demanding expectations of industrial and scientific users. Customers also benefit from Pico’s comprehensive warranty and responsive technical support, which includes online resources, firmware updates, and direct assistance from experienced engineers.

Beyond the hardware, Pico Technology provides a suite of software tools that enhance the usability of the TA189. The integrated PicoScope 6 environment offers drag‑and‑drop measurement templates, automated trigger settings, and real‑time cursor readouts, allowing users to obtain precise current values with minimal configuration. For organizations that require data management and compliance reporting, the software can export measurement data in CSV, MATLAB, and XML formats, facilitating seamless integration into quality management systems. Moreover, Pico’s global network of authorized distributors ensures that spare parts, calibration services, and upgrade options are readily available, reducing downtime and protecting the investment over the product’s lifecycle. Training webinars and detailed user manuals are provided at no extra cost, empowering new users to quickly master the probe’s capabilities and apply best‑practice measurement techniques across a range of applications. The combination of robust hardware, intuitive software, and dedicated support makes the TA189 a cost‑effective choice for organizations seeking long‑term reliability without compromising measurement accuracy. Pico’s commitment to continuous improvement means that firmware updates and feature enhancements are regularly released, ensuring that the probe remains compatible with emerging standards and evolving testing methodologies.

Key Features

• Closed‑loop Hall effect sensor delivers true RMS AC and DC measurements up to 30 A with high accuracy and low phase error. The sensor’s wide bandwidth ensures reliable capture of fast transients, making it suitable for power quality and harmonic analysis.
• BNC connector with gold‑plated contacts provides a low‑noise, secure connection to oscilloscopes, data loggers, and PicoScope units for seamless integration. The connector’s robust design resists corrosion and mechanical wear, ensuring long‑term reliability in harsh industrial environments.
• Integrated temperature sensor monitors clamp temperature in real time, preventing overheating and extending probe lifespan during prolonged measurements. When the temperature exceeds a user‑defined threshold, the device can trigger an alarm or shut down the measurement to protect both the probe and the circuit under test.
• Compact clamp‑on design fits conductors from 10 mm to 30 mm, allowing quick installation without disconnecting live wires. The ergonomic handle provides a comfortable grip for one‑handed operation, and the built‑in locking mechanism ensures the probe remains securely positioned during vibration or movement.
• Pico Technology offers comprehensive after‑sales support, including a 2‑year warranty, calibration services, and access to online resources, ensuring customers receive reliable assistance throughout the product’s lifecycle. Technical experts are available to help with setup, troubleshooting, and integration, providing peace of mind for both novice and experienced users.

FAQ

How does the TA189 measure DC current without breaking the circuit?

The TA189 uses a closed‑loop Hall effect sensor that detects the magnetic field generated by current flowing through a conductor. Unlike traditional shunt methods that require a physical connection, the Hall sensor operates independently of the conductor’s insulation, allowing it to sense both AC and DC components while the circuit remains energized. The sensor’s output is processed by internal electronics that convert the magnetic field into a proportional voltage signal, which is then delivered through the BNC connector for accurate measurement. This non‑intrusive approach eliminates the risk of introducing additional resistance or voltage drop, preserving the integrity of the circuit under test.

Can the TA189 be used with oscilloscopes other than PicoScope?

Yes, the TA189’s BNC output is a standard 50 Ω coaxial interface that is compatible with most modern oscilloscopes, data acquisition modules, and portable recorders. The gold‑plated connector ensures low‑noise signal transmission, and the probe’s true RMS output can be interpreted by any instrument that accepts a voltage proportional to current. Users should verify that the connected instrument is configured for the appropriate input impedance and scaling to obtain correct current readings. Pico Technology also provides calibration data that can be applied in third‑party software to further enhance measurement accuracy.

What is the frequency response of the TA189 and why does it matter?

The TA189 offers a flat frequency response up to 100 kHz, which means it can accurately capture fast transient events and high‑frequency components in the current waveform. This bandwidth is essential for applications such as power quality analysis, harmonic detection, and fault investigation, where the ability to resolve rapid changes in current is critical. A wide frequency response also ensures that the probe can be used with high‑speed digitizers and oscilloscopes without introducing significant attenuation or phase error, preserving the fidelity of the captured signal.

How does the built‑in temperature monitoring protect the probe?

The probe includes an internal temperature sensor that continuously measures the clamp’s temperature during operation. If the temperature rises above a user‑defined limit, the probe can generate an alarm signal or automatically disable the output to prevent overheating. This feature protects both the probe’s internal electronics and the conductor being measured, especially during prolonged or high‑current measurements where excessive heat could degrade performance or cause safety concerns.

What accessories are available to extend the functionality of the TA189?

Pico Technology offers several accessories that complement the TA189, including the TA041 differential voltage probe for full power analysis, mounting brackets for vertical or horizontal installation, and custom cable assemblies with various connector types. These accessories enable users to calculate true power, apparent power, and power factor, as well as to integrate the probe into complex test setups. All accessories are designed to maintain the same high level of accuracy and durability as the TA189 itself, ensuring a cohesive measurement system.