Yokogawa EJX930A Multivariable Transmitter
The high performance EJX930A multivariable transmitter features multi-sensing technology with a single-crystal silicon resonant sensor that outputs the measured differential pressure, static pressure and process temperature, which covers multiple protocols: HART, FOUNDATION fieldbus and RS485 Modbus. Additionally the HART protocol and FOUNDATION fieldbus protocol types are suitable to measure dynamically calculated and fully compensated mass flow for liquid, gas, or steam. 4 to 20 mA DC signal output is available in HART protocol type. FDT/DTM* standard conforming software is available for transmitter configuration. FSA120 (FieldMateTM FlowNavigatorTM) is used for flow configuration of the HART protocol and FOUNDATION fieldbus protocol types. *: FDT (Field Device Tool): Defines the system environment in which the DTM runs. DTM (Device Type Manager): The application which defines the graphical user interface (GUI) specific to the device.
[HART protocol type] • 1.0% mass flow rate accuracy over 1:10 flow range • Advanced diagnostic function (option) • Simultaneous dual output of 4 to 20mA and pulse signals. • HART protocol revision selectable from 5 (HART 5) or 7 (HART 7) • Long tag supporting up to 32 characters (HART 7) • Enhanced burst mode and event notification(HART 7) • SIL2 for safety requirement Note: HART 5 stands for HART protocol revision 5 HART 7 stands for HART protocol revision 7
[FOUNDATION Fieldbus protocol type] • 1.0% mass flow rate accuracy over 1:10 flow range • Advanced diagnostic function (option) • Various function blocks available; 5 AIs, AR, IT, SC, and IS as standard. PID as an optional feature. • Cyclically displays up to 10 variables • Software download function (option)
[Modbus protocol type] • RS485 Modbus protocol type provides easy multisensing data transmission to the flow computers. • The process data status is provided for each measured differential pressure, static pressure and process temperature. It is easy to implement process data diagnosis. • Cyclically displays up to 16 variables including RTU management data. • Up to 32 transmitters can be connected by multi-drop communication. • 32 characters long tag and squawk are supported for easy identification of transmitters.