Overview

The Electrocorder DC-3V-RS is a three-channel DC voltage logger for monitoring batteries, DC supplies, charging circuits, photovoltaic systems, DC motors, telecoms circuits and other DC voltage sources.

Use it when you need to record one, two or three DC voltage channels over time. The DC-3V-RS has selectable ranges for lower and higher DC voltage monitoring, making it useful for diagnosing battery, charger, PV, power supply and DC control-circuit behaviour.

Best for:

• One, two or three channel DC voltage logging.
• Battery and charger voltage monitoring.
• DC power supply, trip battery and control-circuit investigations.
• PV cell or array voltage checks where current is not required.
• DC motor, generator, traction or telecoms voltage trend studies.

Consider another model if:

• You need DC current and energy as well as voltage, where the DC-3VA may be a better fit.
• You need solar irradiance and PV power output together, where the PV-3 may be more appropriate.
• You only need solar irradiance, where the SR-1R may be simpler.

What you get:

• DC-3V-RS logger.
• Three voltage input leads, USB lead, 12 Vdc power supply, carry case, user instructions and free Electrosoft analysis software.
• Selectable DC voltage ranges for low and higher voltage monitoring.

Set up the logger in Electrosoft, connect the voltage leads to the DC points being monitored, then start recording. When enough data has been captured, disconnect the logger, connect it to a PC by USB and use Electrosoft to view, save, export and report on the results.

Applications

Typical applications: The DC-3V-RS is intended for DC voltage-only investigations where several voltage points need to be logged at the same time.

What the DC-3V-RS records:

• One, two or three channels of DC voltage.
• Selectable ranges: 0.5 V to 60 V and 1 V to 300 V.
• Minimum, maximum and average values over the selected averaging period.
• DC voltage trends for batteries, supplies, PV circuits and other DC systems.

Why constant sampling matters: many instruments only take periodic snapshots. The Electrocorder continuously samples throughout the averaging period, helping capture short events, changing loads and trend data that can otherwise be missed.

Recording duration depends on the selected averaging period. External 12 Vdc power is recommended where available to preserve the internal batteries during longer studies.

The logger is designed to be installed by a competent person, generally an electrician or engineer. If suitable isolated test points are available, it can often be fitted without interrupting the system being monitored.

Case Studies

These related Electrocorder case studies, application pages and articles show how this type of logging is used in practical investigations.

Battery Storage Systems
A knowledge page covering battery storage issues where recorded DC voltage evidence can help understand system behaviour.

Battery Storage System Issues
An article discussing battery storage problems and the value of measuring DC voltage behaviour.

Solar Photovoltaic Auditing
A solar PV application page where DC voltage measurement is part of understanding photovoltaic system output.

Application Notes
A collection of Electrocorder application notes covering practical logging uses across voltage, current, energy and specialist measurements.

Resources

Documentation:
Download the DC-3V-RS datasheet and user instructions for detailed technical information, installation guidance and operating instructions.

	Datasheet
	User Instructions (English)

Free Electrosoft PC software
Electrosoft is compatible with Windows 11 down to Windows 7. It lets you view and zoom current, power and energy graphs, export data to Microsoft Excel, email results to colleagues, and print or save reports as PDF files with your company logo.

Electrosoft includes statistics, load balancing, tariff and costing analysis, annual CO2 and energy usage projections, logger management and calibration management tools. Sample files are included so you can try the software without having a logger connected.

Download Electrosoft PC software

Features

When to choose the DC-3V-RS
Choose this model when the investigation is about DC voltage behaviour and multiple voltage channels are more important than current or energy calculation.

Compare with related Electrocorder models
If current and energy are also required, consider the DC-3VA. If the application is solar PV output with irradiance, consider the PV-3. If only solar irradiance is needed, consider the SR-1R.

Key features:

• Three-channel DC voltage recording.
• Selectable lower and higher DC voltage ranges.
• Useful for batteries, chargers, power supplies, PV circuits and DC control systems.
• External 12 Vdc power option for longer monitoring.
• Constant sampling to reduce the risk of missing short-duration or changing DC voltage events.

Measurement note
The DC-3V-RS records DC voltage only. It does not measure DC current, power or energy by itself.

Included with your three-channel DC voltage logger:

• DC-3V-RS logger.
• Three voltage input leads, USB lead, 12 Vdc power supply, carry case, user instructions and free Electrosoft analysis software.
• Selectable DC voltage ranges for low and higher voltage monitoring.

Determining product order codes:

To specify your Electrocorder select various codes and enter into the boxes in order to create an accurate product code. For example: DC-3V-RS-IP43-SET.

FAQ

What does the DC-3V-RS measure?
It records one, two or three channels of DC voltage.

What voltage ranges are available?
It supports selectable ranges of 0.5 V to 60 V and 1 V to 300 V.

Does it measure DC current?
No. For DC current and energy as well as voltage, consider the DC-3VA.

Can it be used on PV systems?
Yes, it can record DC voltage on PV cells or arrays where voltage-only data is required.

What software is used to analyse the data?
Electrosoft PC software is used to configure the logger, download recorded data, view graphs, export data and create reports.