After more than 3 years of field proven data and our own in-house test results, MSA is excited to announce that XCell TruCal H₂S and CO gas sensors with Diffusion Supervision can now go up to two years between calibrations!

TruCal sensors perform a self-calibration every 6 hours and corrects for sensor drift without having to manually apply calibration gas. When equipped with Diffusion Supervision technology, which verifies that the sensor inlet isn’t blocked, there is no longer a need to perform tedious manual gas calibrations every 3 to 6 months saving you time and money.

Learn more: https://us.msasafety.com//trucal