weber Sensors” PRO-50 calorimetric flow-captor is a “relative” reading flow monitor with a built in learn function. When the user turns on the flow, the PRO-50 automatically scales itself to display this as 100 percent of full flow. The process setpoint is then automatically set at 50 percent. No calibration or adjustments are necessary. Settings may be changed if desired via pushbutton. No moving parts, stainless steel construction, IP67 protection standard, epoxy encapsulated electronics for shock and vibration. Capable of low-flow monitoring. Provides visibility of relative flowrate, setpoint, alarm status, and overflow.