EL-FLOW® Digital Mass Flow Meters and Controllers

     The digital Mass Flow Meters and Controllers are based on new digital electronics where the analog sensor signal is sent directly to a microprocessor. By doing so, optimum signal stability and accuracy is achieved. An integral alarm function continuously checks the difference between the setpoint- and the measured value. If, for example, the supply pressure of a Mass Flow Controller drops and therefore the flow can no longer be controlled, the instrument gives a warning. In addition the instrument runs a self diagnostics routine, and controller settings can be remotely adjusted with a handterminal or a computer via FLOW-BUS, Bronkhorst Hi-Tec's RS-485 based fieldbus.In these instruments both analog in- and output signals and digital communications are possible at the same time. Thanks to this feature it is very easy to replace analog instruments with digital instruments in an existing installation. The digital features of the new instrument can be selected with a multi-functional switch on the instrument, with a handterminal or a computer via FLOW-BUS.

FEATURES

High accuracy with storage of up to 8 calibration curves.

Fully interchangeable with analog instruments.

RS-485 digital communication and analog signals.

Fast response controller.

High stability and repeatability.

Alarm and counter functions.

Single rail power supply: +15 Vdc or +24 Vdc.

Hand terminal. Based on the E-7000 series a hand-terminal is developed for local readout and control for digital instruments. In big and complex automated systems it is often the case that the application software is only designed to control the application.

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