Models 10s, 11s, 12s, and 50A-1s
are distinguished by their Full Scale differential pressures and accuracy of their standard calibrations. They offer nominal Full Scale Delta-Ps of 10, 1, & 2 inches of water respectively.offer standard accuracies of 0.5% Full Scale with specials of 0.25% Full Scale. Standard Flow Ranges are available with Full Scale flows of less than 10 CCM to 1000 LPM, with special ranges up to 1000 CFM.