Home / Products / Pressure / Differential Pressure / Gage / Switches - Digital Products Calibration Services DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Pressure DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Air Quality DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Air Velocity DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Flow DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Level DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Temperature DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Test Equipment DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Valves DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Miscellaneous DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Hazardous Rated DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Series DH 3 in 1 Instrument: Gage, Switch and Transmitter, Square Root Extractor for Air Flow Digihelic® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output. View More Series DHII NEMA 4 (IP66) Housing with Large, Bright LCD, Square Root Output for Flow Digihelic® II Differential Pressure Controller combines the 2 SPDT control relays, 4-20 mA process output and Modbus communications with a large, brightly backlit 4 digit LCD display. View More Series DHC 3-in-1 Differential Pressure Controller Differential pressure controller combining 3 features allowing the reduction of several instruments with one product, saving inventory, installation time, and cost. View More