Measuring both AC and DC, this voltage data logger covers electrical distribution and solar PV from a single instrument, reaching 1200 V AC and 1700 V DC across strings, battery banks, and DC bus rails. Its 1-second True RMS trend logging documents voltage sags, swells, and fluctuations at a resolution longer-interval loggers cannot match.
AEMC Instruments L461 Offers
The AEMC L400 Series Model L461 is the only logger in the family that measures voltage, and the only one that handles DC. A switchable AC/DC front end and a wide measurement window suit it to both electrical distribution work and solar PV verification from a single instrument. A built-in web server with Wi-Fi delivers live readings and recording setup from any browser, while DataViewSync™ extends access to remote substations and switchgear over the internet. Recorded sessions open in the free DataView® software for charting and report generation.
Features
- Switchable AC/DC mode covers distribution and solar PV in one deployment
- 1-second True RMS voltage trend logging for basic voltage quality analysis through DataView® Control Panel
- 1200 V AC range covers single-phase distribution, inverter output, and utility feeds
- 1700 V DC range covers solar PV strings, battery systems, DC bus rails, and EV charging infrastructure
- True RMS measurement for accurate voltage readings
- Documents voltage sags, swells, and fluctuations at 1-second resolution
- Built-in web server for live voltage, mode switching, and recording config, no app required
- Wi-Fi AP mode broadcasts its own network; Station mode joins facility Wi-Fi for DataViewSync™
- Extended recording mode supports long-term voltage studies
- Two-button recording start and stop, no menus to navigate
- Stores up to 200 recording sessions on 8 GB onboard memory
- Battery or USB powered for continuous, uninterrupted operation
Applications
- Solar PV system monitoring
- Voltage trend analysis
- Outlet-level troubleshooting
- Distribution panel monitoring
- Battery bank and energy storage DC monitoring
- Inverter input and output verification
- Utility feeder and service-entrance voltage monitoring
AEMC Instruments L461 Specifications
| Electrical | |
| Measurement Type | AC/DC voltage |
| Channels | 1 |
| Measurement Range | AC: 10 to 1200 V, DC: 10 to 1700 V |
| Frequency Range | 45 to 65 Hz |
| Accuracy | ±(1% R + 5 counts typical) |
| Resolution | Up to 100 mV |
| General | |
| Power Supply | 3 x AA batteries or USB |
| Recording | |
| Normal Mode | 3 days |
| Extended Mode | Up to 10 weeks (15-minute aggregation) |
| Data Storage and Reporting | |
| Recording Sessions | Up to 200 |
| Storage | 8 GB micro SD (internal) |
| Aggregation Intervals | 1 to 60 minutes, 1-second trends |
| Data Interface | USB and Wi-Fi |
| Software | DataView® and DataViewSync™ |
| Mechanical and Environmental | |
| Mounting | Magnetic |
| IP Rating | IP54 |
| CAT Rating | 1000 V CAT IV, 1500 V DC CAT III |
| Dimensions | 7.01 x 2.83 x 1.34″ (17.8 x 7.2 x 3.4 cm) |
| Weight | 10.58 oz (300 g) |
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