LASCAR ELECTRONICS EL-USB-4 AC Current Data Logger

Logs up to 1000A AC with ±1.0% accuracy using an external current clamp (not included). The EL-USB-4 stores 32,510 readings and connects via USB for easy data download.

Overview

The EL-USB-4 is a compact AC current data logger designed for monitoring electrical loads. It accepts a 0-1V AC input from a current clamp (sold separately), allowing measurement of currents up to 1000A AC depending on the clamp used. With a memory capacity of 32,510 readings and a user-selectable logging rate from 1 second to 12 hours, it is suitable for both short-term troubleshooting and long-term monitoring.

What stands out

• High accuracy: ±1.0% of reading (typical)
• Large memory: 32,510 readings
• Flexible logging intervals: 1 second to 12 hours
• USB interface for quick data transfer
• User-programmable high and low alarms with LED indicators
• Long battery life: approximately 1 year at 10-second logging rate
• IP67 rated when protective cap is fitted

Technical details

• Measurement type: AC current
• Input range: 0 to 1V AC
• Current measurement range: 0 to 1000A AC (with appropriate clamp)
• Resolution: 0.5A (with 1000A/1V clamp) or 0.005V (logger input)
• Memory: 32,510 readings
• Logging rate: 1 second to 12 hours
• Interface: USB 2.0
• Software: EasyLog EL-WIN-USB (free download)
• Power: 1/2 AA 3.6V lithium battery
• Battery life: approx. 1 year (at 10-second logging rate)
• Operating temperature: -10°C to +40°C
• IP rating: IP67 (when cap fitted)
• Alarm: high and low user-programmable
• LED indicators: red (alarm), green (status)
• Data output formats: CSV, Excel, PDF
• Current clamp included: No (sold separately)

Our verdict

For professionals needing reliable AC current monitoring without breaking the bank, the EL-USB-4 delivers accurate data logging with a generous memory and flexible setup. Just remember to pair it with a suitable current clamp.