CellaTemp® PX 41 is a digital pyrometer featuring fibre optics to measure temperatures ranging from 700 to 3000 °C. The sensor head is housed separately from the electronics assembly. Both the sensor head and the fibre optic cable are unsusceptible to electromagnetic radiation. The optical sensor head can withstand ambient temperatures up to 250 °C without cooling. This variant is ideal for cramped, hard-to-access locations.