Nice Instrumentation, Inc. Nice Instrumentation LPIV - Low Profile Insertion Vortex Meter 涡街流量计

"The low profile insertion vortex flow meter is a cross pollination of an inline meter and an insertion meter. The purpose is to simplify the installation and eliminate human error when installing a flow meter. The insertion depth is always held to an exact position, and the meter will always point up stream, eliminating calibration variables. The meter has a low profile and can be installed in any orientation, vertically or horizontally around the pipe. Since most problems with the operation of an insertion meter is installation related the start up reliability of the meter reading is very high.","There are no other parts required, other than the meter during installation. The mounting assembly welds directly on the outside of the pipe. The radius of the mounting assembly is machined to fit the diameter of the pipe, from two inch to twenty four inches in diameter. There is an arrow machined into the mounting assembly showing the direction of flow. Once the mounting assembly is welded to the pipe, the insertion bar can then be inserted into the mounting assembly. The insertion bar is designed to have no leak paths to the sensors or the electronics. All mechanical assemblies on the insertion bar are electron beam welded with no O rings or compression seals. If for any reason the insertion bar is damaged, it can be replaced without removing anything off the pipe. There are two sizes of insertion bars, one for two - four inches and one for six - twenty four inches; therefore one spare part can fit many lines sizes and could be interchangeable. The meter has been designed for safety. There is a pin which is inserted into the mounting assembly once the insertion bar is inserted into the pipe. This pin serves two purposes. The first is to align the meter with the flow; the second is to prevent the meter from coming out under pressure. The pin can only be installed with zero line pressure. When pressure is applied, the pin is locked in place and cannot be removed. There is also a large nut which screws down over the insertion bar onto the mounting assembly. This nut also holds the insertion in place and keeps it from coming out of the line under pressure. When pressure is applied to the line, the insertion bar cannot be removed; even if someone removes the holding nut, the pin is still in place. These meters include our Smart Transmitter Electronics, \"MicroTel.\" There are six digits of rate and eight digits of totalization. All parameters can be modified via a keypad. The electronics is a two wire device, 4 to 20 mA and can be remote mounted over three hundred feet from the meter. There is also a serial port to read and down load data into memory."