Our thermal dispersion level switches are are both ATEX Exd certified and SIL2 rated.
Thermal dispersion technology measures the temperature difference between an active (heated) RTD and a reference (un heated) RTD. This is greatest in a dry condition and decreases rapidly when wet, cooling the heated RTD.
Our Calibration Facilities
N.I.S.T traceable calibration facilities , the most sophisticated of any manufacturer of thermal gas mass flow meters.