Profile: Fathom Technologies is a manufacturer of gas flow measurement and control instrumentation. We produce a comprehensive line of thermal mass flow meters and controllers. We compare the gas flow rate to a command set point and applies the necessary voltage to magnetically raise or lower the actuator above the orifice to maintain the desired flow rate. We offer GR series mass flow meters & controllers to utilize a thermal sensor technology that measure and control mass flow directly. The IL series is ideal for low flow applications that require all stainless steel wetted materials.