Description
AC & DC Data Logger. One Instrument
The AEMC® Data Logger Model L461 is the only logger in the L400 Series that measures voltage — and the only one in the series that handles DC. It’s a 2-input, single-channel TRMS AC/DC voltage quality logger built specifically for distribution monitoring and solar PV applications, with a voltage range that covers virtually every situation you’ll encounter; up to 1,200 VAC for AC circuits and up to 1,700 VDC for DC systems including solar strings, battery banks, and DC bus rails. The two inputs — COM and + — connect directly to your voltage leads and alligator clips, which are included in the box.
The standout capability for the L461 is its 1-second TRMS trend logging. That 1s data — accessible through the DataView® Control Panel — enables basic voltage quality analysis; documenting voltage sags, swells, and fluctuations at a resolution that longer-interval loggers simply can’t provide. For solar PV verification, distribution auditing, or any application where voltage stability matters, this is the meaningful differentiator.
Like the rest of the L400 Series, the L461 runs a built-in web server. Connect via Wi-Fi, open a browser, and you’re live — no software, no app, no laptop needed on site. Battery or USB power keeps it running continuously when plugged into a panel outlet or wall adapter.
Why Choose Model L461?
Voltage Quality Analysis — Why 1s Matters
Most data loggers in this class record at 1-minute intervals or longer. The L461 records every second. That difference matters when you’re trying to document a voltage sag that lasts 3 seconds, a swell that occurs during motor startup, or a fluctuation pattern tied to a specific load cycle. The 1s trend data available through the DataView® Control Panel gives you the resolution to see those events — not just an averaged value that hides them. For distribution voltage monitoring or solar PV string verification, that’s the difference between finding the problem and missing it entirely.
AC/DC Switchable — One Instrument
Switch between AC and DC measurement mode directly from the instrument menu or browser interface. No range selection, no separate instrument. One L461 covers distribution voltage monitoring on the AC side and solar PV string voltage on the DC side — deploy it wherever the job takes you.
Solar PV Ready
Rated for solar PV voltage inputs up to 1,700 VDC. Log string voltage at combiner boxes, verify array performance, and document voltage fluctuations over days or weeks.
Browser-Based Access — No App Needed
Built-in web server — no software required. Open a browser on any Wi-Fi connected device to view live voltage, switch AC/DC mode, and configure recordings on the spot.
Battery or USB Power
3x AA alkaline for portable deployments, or USB power for continuous uninterrupted operation. Extended mode enables up to 10 weeks on batteries for long-term studies.
- Switchable AC/DC mode — one instrument covers distribution and solar PV in a single deployment
- 1-second TRMS voltage trend logging — enables basic voltage quality analysis via DataView® Control Panel
- 1,200 VAC range covers single and three-phase distribution, inverted output, and utility feeds
- 1,700 VDC range covers solar PV strings, battery systems, DC bus rails, and EV charging infrastructure
- Built-in web server: browser access for live voltage, mode switching, recording config — no app required
- Wi-Fi AP mode broadcasts its own network; Station mode joins facility Wi-Fi for DataViewSync™
- Includes safety leads and alligator clips rated for full voltage range
- Battery or USB powered — USB enables continuous uninterrupted operation