The company said its new warranty extension strengthens the value of its customers’ investment in gas monitoring.

Trolex can offer a service contract specifically tailored to requirements that covers the maintenance of their products, it said.

Kellingley Colliery electrical engineer James Savage said: “For many years Trolex have supplied UK Coal’s Kellingley Colliery with transducers for environmental and machine based health monitoring.

“Safety is at the forefront of all our operations at Kellingley; Trolex offer us advanced and reliable systems backed up with both on site and factory-based technical support as and when required.

“The Trolex commitment to quality, reliability and a vision for the future coupled with a strong customer focus enables Kellingley to continue to support our commitment to a safe working environment.”