Air Flow Sensor By Spectrum Enterprises Instruments & Controls

EE75High accuracy air flow sensor for industrial applicationsThe EE75 series air velocity transmitters were developed to obtain accurate measuring results over a wide range of velocities and temperatures. A high-quality hot film sensor element based on cutting- edge thin film technology ensures maximum sensitivity even at lowest mass flows.At the same time the innovative probe design produces reliable measuring results at high flow velocities of up to 40m/s (8000ft/min). The integrated temperature compen- sation minimises the temperature cross-sensitivity of the EE75 series which combined with the robust mechanical design allows it to be used at process temperatures between -40 to +120C (-40 to 248F).In addition to air velocity and temperature values the transmitter calculates the volumetric flow rate in m/h or ft/min. The cross section of the duct needs to be determined for this purpose and the volumetric flow rate can be displayed and directed to one of the analogue outputs. The EE75 series can be used to measure the velocity of other gases as well although a correction has to be applied to the unit at the factory.TECHN. DATAMeasuring range0...2m/s (0...400ft/min)0...10m/s (0...2000ft/min)0...40m/s (0...8000ft/min)-40...120C (-40...248F)Response time< 1.5s...40s (can be configured)Outputsfreely scaleable in the ranges of 0...10V and 0...20mA (e.g. 4...20mA)Accuracy0.06...2m/s (12...400ft/min): 0.03m/s (6ft/min)0.15m/s...10m/s (30...2000ft/min): (0.10m/s (20ft/min) + 1% of MV)0.2m/s...40m/s (40...8000ft/min): (0.20m/s (40ft/min) + 1% of MV)0.5C (0.9F)Supply24V AC/DCOperating range0...40m/s (0...8000ft/min)-40...120C (-40...248F)pressure-tight models up to max. 10bar