Smart Electronic Flowmeters

The Ajax Smart CMS2000 electronic flowmeter is ideally suited for measurement of fuel oil, hydraulic circuits, gases and water flows. It has a high accuracy, wide turndown ratio and good repeatability. It is compact, very strongly constructed, can withstand high pressures and temperatures. The design is based on a spring loaded variable orifice in which the flow causes a sharp edged plunger to move within a female cone. It utilizes a plunger containing a magnet, the position of which is sensed by a ‘Hall Effect’ device. The flowrate is proportional to the movement of the plunger, so giving an output proportional to the flowrate. The built-in micro processor electronics can be configured to correct for density, and can calculate mass flow and total flow as well as flow rate. The flowmeter has a built-in temperature sensor and can be fitted with a pressure sensor, all in the same unit. The board has flexible output options and all the signals can be transmitted as analogue or RS485 digital outputs, thus allowing up to 30 flowmeters to be connected to a computer on a single 4 wire loop.