The EMRC Gas Flow Monitoring System is designed for EPA Method 2 to determine the stack velocity and volumetric flow rate using a type S pitot tube. Two 4-20 ma DC signals are generated which are used to calculate volumetric flow (one signal is differential pressure, the other is temperature). This system includes the insitu sensor, signal conditioning module, differential transducer, thermocouple transmitter, zero and span pots, recorder outputs, and built in dynamic calibration module that verifies the signal output against a primary reference standard (manometer). It can be set up to run periodic backpurges for high particulate locations. The components are contained in a weather resistant house. This item is also available for rent from CleanAir Europe.