Honeywell 1146B AC/DC Current Probe 100 kHz 100 A

Technical Specifications Breakdown

The 1146B provides two sensitivity ranges to match your measurement needs. At the 100 mV/A setting, it handles 50 mA to 10 A peak with an accuracy of ±3% of reading (≥50 mA). For higher currents, switch to the 10 mV/A range, which covers 500 mA to 40 A peak at ±4% accuracy (≥50 mA) and up to 100 A peak with a maximum error of 15% at 100 A. The probe operates at a working voltage of 600 V maximum and is powered by a standard 9 V alkaline battery. These parameters allow you to confidently measure currents in a wide variety of industrial circuits.

Industry Applications

In motor controller diagnostics, the 1146B captures inrush currents and transient spikes that can cause nuisance tripping or component failure. For switching power supply testing, its DC to 100 kHz bandwidth reveals ripple currents and load transient responses. Inverter and current amplifier troubleshooting also benefit from the probe's ability to measure both AC and DC components simultaneously, helping you identify drive issues or inductive load problems quickly.

Installation & Setup Guidance

Using the 1146B is straightforward. Connect the probe's BNC output to any oscilloscope with 1 MΩ input and 0.2 to 0.5 V/div sensitivity. Clamp the probe around the conductor you wish to measure—no need to break the circuit. Select the appropriate sensitivity range (100 mV/A for lower currents, 10 mV/A for higher currents) and zero the probe before each use. Ensure the 9 V battery is fresh for accurate readings.

Maintenance & Reliability

Regular inspection of the probe's cable and connector ensures consistent performance. Replace the 9 V alkaline battery when the low-battery indicator appears. Store the probe in a clean, dry environment to protect the hall-effect sensor. These simple steps extend the service life of the 1146B and maintain its specified accuracy over many years of use.

When Current Measurement Must Be Accurate and Non-Invasive

When troubleshooting motor controllers, switching power supplies, or inverters, you need a current probe that captures both AC and DC signals without breaking the circuit. The Honeywell 1146B AC/DC Current Probe delivers reliable measurements up to 100 A DC or peak AC with a frequency range of DC to 100 kHz (-3dB with current de-rating). Its hall-effect sensor technology ensures accurate display of transient current signals, making it an essential tool for industrial automation engineers.

Compatibility & Integration

The 1146B is compatible with any Keysight oscilloscope that has 0.2 to 0.5 V/div sensitivity and a 1 MΩ BNC input. It also works with other oscilloscopes meeting these input requirements. The probe replaces the discontinued 1146A with the same form, fit, and functionality, making it a drop-in upgrade for existing test setups.

Selection Guide & Purchasing Advice

Before ordering, verify that your oscilloscope has a 1 MΩ BNC input and the required sensitivity. AutoDCSTech stocks this probe and can confirm current lifecycle status and availability. Contact our team for assistance with your specific application needs.

Frequently Asked Questions

What is the maximum current the 1146B can measure?

The 1146B measures up to 100 A DC or peak AC at the 10 mV/A setting.

What is the frequency range of this probe?

The frequency range is DC to 100 kHz (-3dB with current de-rating).

What type of battery does the 1146B use?

It uses a standard 9 V alkaline battery.

Can I use this probe with non-Keysight oscilloscopes?

Yes, as long as the oscilloscope has 0.2 to 0.5 V/div sensitivity and a 1 MΩ BNC input.

Is the 1146B a replacement for the 1146A?

Yes, the 1146B replaces the discontinued 1146A with the same form, fit, and functionality.