A portable Energy Logger is the latest addition to Gemini’s Tinytag range of stand-alone data loggers and radio data logging systems. This non-invasive, self-configuring device can be used for spot-checks or for longer term recording of single and three phase power usage, to identify when equipment is being used, times of peak load, how much energy is being used and the overall assessment of energy efficiency.

The Energy Logger can be used to monitor both single devices and complete premises. It can record inductive and complex loads. It combines ease of use with accurate, high level performance. Logging can be initiated by the touch of a button, so users do not need a laptop to operate the device on site, and it does not require the exposure of any live wires or terminals so it is also safe. Non-invasive flexible coils are used to monitor the current in each phase of a three phase supply while the voltage information may be obtained via a standard 13A wall socket.

Like all Tinytags, the Energy Logger is configured with easy to use Tinytag Explorer software for clear viewing and management of data. Novice users are able to quickly and simply record energy usage information, whilst expert users can use the unit to record more detailed information about the supply. For example, the instrument provides ‘Power Factor’ (PF) data which is a measure of power transmission efficiency. The PF is significant because of the way power companies bill their customers; they will usually charge a higher rate for industrial or commercial customers with a low PF.

The Energy Logger costs £795 +VAT and comes with everything needed to start logging straight away.

The Energy Logger is the latest in a range of robust data loggers that have been developed by Gemini in the UK over the last 20 years for accurately monitoring parameters such as temperature, humidity and CO2, voltage, current, count, shock and vibration across a wide range of applications and industries.

The Tinytag range includes compact, basic units designed for indoor building monitoring, to robust and waterproof devices used in harsh, industrial and outdoor applications. Data loggers with displays can also be supplied, and specialist ATEX validated units for recording conditions in intrinsically safe areas are also available. For additional flexibility, external sensors in the form of probes offer easy access to awkward areas a logger cannot reach, or can be used for monitoring extremes of temperature such as those in manufacturing processes, ovens and cryogenic areas.


Gemini Data Loggers (UK) Ltd
Scientific House
Terminus Road
PO19 8UJ
T: +44 (0)1243 813000