The PicoLog CM3 Current Data Logger is a compact, easy-to-use data logger for measuring the current consumption of buildings and machinery.
The PicoLog CM3 is a three-channel data logger that uses industry-standard current clamps. Simply connect to your PC via USB or Ethernet, run the supplied software and you can monitor and log current for a wide range of applications.
- Suitable for single or three-phase alternating currents
- Non-invasive measurement
- High resolution and accuracy
- No power supply required
- USB and Ethernet interfaces
- Run multiple units on a single PC
- Mains current monitoring
- Three-phase load balancing
- Long-term energy use recording
- Energy and cost saving / ISO14001 monitoring
Flexible, expandable software included
Your PicoLog CM3 Current Data Logger is supplied with PicoLog 6 data logging software, available for Windows, macOS and Linux. With PicoLog 6 you can collect almost unlimited datasets, analyze them and then display the results in spreadsheet and graphical formats.
PicoLog 6 can record data from multiple PicoLog data loggers at the same time. This allows you to collect up to 60 channels of current. You can even mix and match different PicoLog loggers to record a mix of current, temperature, voltage and other signals.
The PicoSDK, a software development kit (SDK) is also supplied. PicoSDK contains a range of software drivers and example code that you can use to write your own software or to use your PicoLog CM3 with third-party software such as MATLAB, C, C++, C#, LabVIEW, Python, VB, VB.net to name but a few. PicoSDK can be found on GitHub.
Both PicoLog 6 and PicoSDK are provided free of charge and updates can be downloaded for free.
Non-invasive current clamps
The PicoLog CM3 measures current using industry-standard AC current clamps. These clamps have opening jaws so can be installed in seconds with no physical connection to high voltages. AC current clamps require no power supply or batteries so are ideal for long-term energy-use monitoring and logging.
Pico supply 200 A AC current clamps as standard. If you need to measure higher currents we will be happy to advise on suitable clamps for your application.
The PicoLog CM3 is available on its own so you can add your own current clamps or as a cost-saving kit with three 200 A clamps included (TA138 Current clamps recommended).
USB or Ethernet connection for local or remote logging
With both USB and Ethernet interfaces your PicoLog CM3 can be used in a variety of situations. If you need a portable instrument that can be used at various locations and is fast to set up and use, simply connect your laptop to the PicoLog CM3 by USB. No external power supply is required as the CM3 is powered from the USB port. Image shows the rear panel of the PicoLog CM3 showing Ethernet and USB ports.
Need to monitor a situation over a period of hours or days, or from a remote location? Plug your PicoLog CM3 into a spare port on your network and then access it remotely either from your LAN or over the internet. When using Ethernet the CM3 can be powered either by Power over Ethernet (PoE) or by using the USB connection just for power. Please note that PicoLog 6 data logging software only supports Ethernet connection in Windows.
PicoLog 6 data logging software for PicoLog CM3
PicoLog 6 is a complete data acquisition software package for the PicoLog CM3 current data logger. It provides a visual, easy-to-use interface allowing you to quickly set up simple or complex acquisitions and record, view and analyze data.
- Real-time data collection and display
- Visual logger and channel setup for easy configuration and viewing
- Available for Windows 7, 8 and 10 (32 and 64-bit), macOS, Linux and Raspbian for Raspberry Pi
- Virtually unlimited logging capacity to PC
- Robust database format minimizes data loss and corruption
- Simple and complex programmable alarms
- Up to 4 independent graph axes
- Data can be exported as CSV, clipboard image and PDF
- Supports multiple different PicoLog data loggers and PicoScope oscilloscopes on the same PC
Number of channels: 3
Range (voltage input): 0 to 1 V AC RMS
Accuracy (voltage input): < 200 mV RMS ±1%; < 1 V RMS ±2.5%
RMS noise: 60 µV
Resolution: 24 bit
Conversion time per enabled channel: 720 ms
Voltage input: 1 V RMS, 20 Hz to 1 kHz
Input connectors: 4 mm sockets
Input impedance: >1 MΩ, AC coupled
Overvoltage protection: ±30 V DC
Operating environment: 0 °C to 50 °C (20 °C to 28 °C for stated accuracy); 20% to 80% RH, non-condensing
Storage environment: –20 °C to +80 °C; 5% to 95% RH, non-condensing
Dimensions: 184 x 135 x 36 mm (approx 7.2 x 5.3 x 1.4 in)
Minimum Processor, Memory, Free disk space: As required by the operating system
Operating system: Microsoft Windows 7, 8 or 10, 32-bit and 64-bit versions; macOS 10.9 (Mavericks) or later, 64-bit only; Linux*, 64-bit only
Ports: USB 1.1
* PicoLog 6 for Linux is distributed as an AppImage, so you can install it without superuser permissions: see appimage.org for further information. The software has been tested on Red Hat, OpenSUSE and Ubuntu.
Additional hardware (supplied): USB 2.0 cable, Ethernet cable, user manuals, software CD-ROM
PC interface: USB 2.0 (USB 1.1 compatible) or Ethernet
Power requirements: Powered from USB port or Ethernet
Compliance: European EMC and LVD standards; FCC Rules Part 15 Class A; RoHS compliant
Warranty: 5 years
PicoLog User's Guide
PicoLog Programmer's Guide
Quick Start Guide