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Home » Case Studies » Battery solutions for temperature sensors - Wavetrend case study

Helping to protect UK’s water from Legionella with their temperature sensors

Saft’s high energy Li-SOCl2 primary lithium battery technology chosen by Wavetrend for their monitoring device

 

Key benefits for Wavetrend

  • A reliable solution for installation in remote places
  • A compact solution capable of providing daily reports over a long service life
  • A superior resistance to atmospheric corrosion
     

Features of Saft’s power solution

  • 30-year track record in Li-SOCl2 primary lithium battery technology
  • A high energy density cell providing up to five years of reliable autonomous power
  • A cell made of premium materials and components, in order to resist harsh conditions

 

Reliability is essential for our IoT solution. Using Saft batteries is the obvious choice for us. It gives us the confidence that we are providing a reliable product that is fit for purpose, giving excellent performance and a long service life.

Roger Biggs Managing Director at Wavetrend (Europe) Ltd

What is the challenge for Wavetrend? Mitigating the risk of legionella in water systems by actively monitoring water conditions in remote locations and over a long service life.

The UK has seen a rise in the Legionnaires’ disease over the past few years. The disease is caused by Legionella, a bacteria that develops in uncontrolled soil and water environments.  It infects the body through inhalation of contaminated water droplets and can cause a potentially fatal form of pneumonia, particularly among the elderly and the infirm.

Water management companies turned to Wavetrend, a leading global creator of Active RFID and Internet of Things (IoT) technologies, to create legionella detecting sensors. The device offers a cost-effective alternative to traditional inspection visits by actively monitoring hot and cold outflow and raising alerts on high-risk temperatures that could lead to spread of the bacterium, enabling quick action to be taken.  

For the probes to be effective, both the Sigfox and LoRa-based sensor needs to be always on and reporting. They also need to be strategically placed, even in far and wide locations, must fit in small spaces and sustain a long service life: a challenge for the cell that must offer a constant pulse response in challenging conditions, and during 5 years of service life.

What is the solution? Saft LS Li-SOCl2 primary lithium batteries

Wavetrend chose Saft’s LS 17500. A reliable, compact (A format), high energy density cell that was able to meet their difficult size demand. The pulse capability of the cell makes it particularly suited for both the Sigfox and LoRa-based monitoring sensors that require a stable voltage response to pulsed currents over its operating time. LS cells are also able to withstand broad fluctuations of temperature and harsh environments making them ideal for use in remote locations.

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