General
Number of measurement channels	1
Frequency measurement
Integrated web server

The voltage data logger L461 from Chauvin Arnoux is a specialised measuring instrument for continuous recording of voltage values in electrical installations. It is designed for use in industrial maintenance environments where the detection of voltage fluctuations, anomalies or intermittent disturbances in the network is required. The device records voltage values in both AC and DC ranges, with the measurement range extending up to 1500 V DC. Single-phase measurement is performed via a single channel, making the L461 particularly suitable for applications where voltage monitoring is the primary focus, for example in photovoltaic systems or during the re-dimensioning of current transformers.

Applications

The L461 is used in various industrial and technical applications, particularly where detailed analysis of voltage waveforms is necessary. This includes monitoring of electrical distribution systems, diagnosing voltage sags or surges, and documenting electrical quality in production facilities. The L400 device series, to which the L461 belongs, is specifically designed for detecting short-term disturbances in the signal, with automatic timestamping simplifying the later analysis of recorded events.

Functions and Equipment in Detail

The L461 features integrated WiFi communication, enabling the device to be used as a remote sensor. Via the WiFi interface, it can be directly connected to a PC or smartphone, allowing remote monitoring and control. An integrated web server enables control and display of measurement values through any web browser, regardless of operating system (Windows, iOS, Android). The user interface offers real-time display, trend recording, and configuration options, including selection of network frequency and changing access passwords.

Technology Explained Simply

Measurement data is stored in the device and can be retrieved via various interfaces. In addition to WiFi, the L461 supports a USB interface, through which data can be downloaded, configured, or control of the device can be assumed. Data transfer is performed via the Data Logger Transfer Software, which can be downloaded from the manufacturer’s website. This software enables graphical representation of measurement values, output in the form of a value table, and export in Excel format. The software also serves for configuring the measurement campaign, including selection of the measurement range and network frequency.

Compatibility and Accessories

The L461 is compatible with a wide range of current transformers, with automatic detection of the connected transformer simplifying setup. Various accessories are available, including Software DataView, multi-purpose magnetic holder Multifix, magnetic probe tips, alligator clips CAT IV-1000 V 15 A, test leads with 4 mm plug, a transport case, and a USB power adapter. Additionally, a shock protection sleeve with Multifix is available, which increases protection of the device under mechanical stress.

Mounting and Installation

Installation is carried out in a branch, line, or circuit, with the devices designed for use in industrial environments. The protection rating IP 54 ensures protection against dust and splashing water, enabling use in indoor environments and slightly damp conditions. The devices are approved for category CAT III 1000 V and CAT IV 600 V, making them suitable for measurements in electrical installations with corresponding voltage classes. Frequency measurement is integrated, allowing network quality to also be monitored.

Operational Advantages

The L461 offers high storage depth, enabling recording over extended periods without data loss. Remote readability via WiFi and USB, along with the integrated web server function, reduces the need for physical access to the device. Data analysis is simplified by software support, making evaluation of measurement results more efficient. The combination of high measurement accuracy, easy operation, and flexible communication makes the L461 a reliable tool for industrial maintenance and electrical system monitoring.