weber Sensors”PRO-50 calorimetric flow-captor is a “relative” reading flow monitor with abuilt in learn function. When the user turns on the flow, thePRO-50 automatically scales itself to display this as 100 percent of fullflow. The process setpoint is then automatically set at50 percent. No calibration or adjustments are necessary. Settings maybe changed if desired via pushbutton.No moving parts, stainless steel construction, IP67 protectionstandard, epoxy encapsulated electronics for shock and vibration.Capable of low-flowmonitoring. Provides visibility ofrelative flowrate, setpoint, alarm status, and overflow.