A Multi-variable transmitter combines a differential pressure transmitter, a gauge pressure transmitter, a temperature transmitter, and a flow computer into one unit.
The flow computer is programmed with application information and uses the three measured inputs to calculate the Mass Flow.
Like the Volumetric Flow, Mass Flow accuracy is determined by the accuracy entire system. This accuracy not only includes the hardware, but also the accuracy of the process parameters used to program the flow computer.
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EJX910A
This transmitter precisely measures differential pressure, static pressure, and process temperature; then uses these values in a high-perfomance on-board flow computer to deliver fully compensated Mass Flow.
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EJX930A
Designed specifically for high static pressure applications, this transmitter precisely measures differential pressure, static pressure, and process temperature; then uses these values in a high-perfomance on-board flow computer to deliver fully compensated Mass Flow.
Details
Description of new features in HART7 communication (equipment revision 12 or later)
Saturated Steam Mode
Added the ability to calculate steam temperature from static pressure values using the steam table (international state formula IAPWS-IF97).
When saturated steam mode (ET Fixed =Saturated Steam) is set, steam temperature values can be calculated. In measurement function B (mass flow measurement), saturated steam flow rate can be measured without connecting an external thermometer.
Since operation under saturated steam is possible without using an external thermometer, engineering man-hours and procurement costs can be reduced.
Storage of User Flow Parameters
User Flow Parameters which is flow settings information input by FSA120 FlowNavigator R2.03 can be stored to the transmitter.
Reduces man-hours required for equipment setup and management, enabling rapid start-up of operation.
User Flow Parameters
- Primary Device and Pipe setup
- Fluid type setup
- Fluid operating range setup
- Fluid physical property setup
Display of Device history
Detailed equipment history information ,which are alarms and process data detected by the transmitter, could be displayed and output via the equipment DTM (FDT2.0) in the unlikely event of equipment failure.
This provides improved maintenance operations by reducing the troubleshooting time required in the event of equipment failure.
Important Notice
| Date | Remarks |
| 2024/12 | Important Notice for Safe Use of Products |
Resources
DP Level transmitter configuration can be very time consuming. Yokogawa DPharp EJA/EJX Pressure transmitters realize reduction in man hours by smart level setup feature.
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