仪器简介: These meters measure flow via pressure drop across a laminar flow element (LFE). Because the flow element makes the flow stream laminar, placement in the process does not require straight pipe runs upstream or downstream of the meter, greatly simplifying installation. The LFEs also provide an outstanding turndown ratio of 100:1 giving the meter a very broad and accurate measuring range. As compared to thermal mass technologies, the LFE design provides an ultrafast response at start-up or input change, often within 20 milliseconds; there is also no thermal drift with this technology. An integrated keypad around the display is all that is required to program the unit for service