Yokogawa EJA110E-JMS Differential Pressure Transmitter

Product Details

EJA110E-JMS Product Description

The Yokogawa EJA110E-JMS is a high-accuracy differential pressure transmitter engineered for energy-conscious industrial environments where every watt of process energy must be accounted for. Built on Yokogawa's proven EJA Series silicon resonant sensor platform, the EJA110E-JMS delivers stable, drift-resistant measurement across a wide span range, making it an indispensable component in flow metering, level monitoring, and pressure-differential applications that directly influence energy consumption and production throughput.

In modern smart factories, uncontrolled pressure differentials translate directly into wasted pump energy, oversized motor loads, and unnecessary heat generation. The EJA110E-JMS addresses this by providing continuous, high-resolution DP measurement that feeds real-time data into energy management systems, enabling operators to trim pump and compressor operating points to their most efficient curves. When integrated with a Yokogawa CENTUM VP DCS or a third-party SCADA platform via HART or FOUNDATION Fieldbus, the transmitter's process variable output becomes a live energy-efficiency index for the entire fluid-handling loop.

The EJA110E-JMS is most effective when deployed as part of a layered, power-aware automation architecture. In a typical smart production line, the transmitter's 4–20 mA or digital Fieldbus signal is wired directly to an I/O module on a Siemens S7-1500 PLC or a Yokogawa ProSafe-RS Safety Controller, where the process value is used to calculate real-time flow rates and differential head losses. These values are then passed upstream to an energy management system (EMS) or a Yokogawa Exaquantum PIMS historian, where long-term energy KPIs are trended and benchmarked against production targets.

On the drive side, the DP measurement from the EJA110E-JMS is frequently used as the process variable for a Yaskawa GA700 variable-frequency drive (VFD) or an ABB ACS880 industrial drive running a closed-loop PID speed control loop. By continuously adjusting motor speed to maintain the setpoint differential pressure rather than running at fixed speed, the VFD can reduce motor energy consumption by 20–40% in variable-flow applications — a direct, measurable energy saving attributable to accurate DP feedback.

For heat exchanger and cooling tower applications, the EJA110E-JMS monitors fouling-related pressure drop increases. When integrated with a Yokogawa EJX series multivariable transmitter for temperature-compensated flow calculation, the combined dataset allows the SCADA system — such as a Wonderware System Platform or Ignition SCADA by Inductive Automation — to schedule predictive cleaning cycles before fouling reaches the point of significant thermal efficiency loss. This reduces both energy waste and unplanned downtime.

On the field network layer, the EJA110E-JMS communicates seamlessly with HART multiplexers and Yokogawa AXF electromagnetic flowmeters sharing the same process loop, enabling a unified asset health view from a single FieldMate device management terminal. For Fieldbus installations, the transmitter integrates natively with FOUNDATION Fieldbus H1 segment couplers and Pepperl+Fuchs FB-series power conditioners, ensuring clean bus power and reliable communication without additional signal conditioning hardware.

At the HMI layer, operators viewing a Yokogawa OmniWin HMI panel or a Siemens SIMATIC HMI TP1500 can monitor live DP trends, set energy-efficiency alarms, and trigger automated load-shedding sequences when differential pressure exceeds energy-optimal thresholds — all without manual intervention.

Factories running continuous processes — chemical, pharmaceutical, food and beverage, pulp and paper, or water treatment — face a common challenge: energy is consumed invisibly in the form of over-pressurised lines, throttled control valves, and pumps running far from their best efficiency point (BEP). The EJA110E-JMS directly addresses each of these loss vectors.

Reducing pump and compressor energy waste: By providing a stable, accurate DP signal across pump suction and discharge flanges, the EJA110E-JMS enables the control system to detect when a pump is operating away from its BEP. The PLC or DCS can then adjust VFD speed or switch to a parallel pump configuration, restoring efficiency and reducing motor heat load — a key contributor to both energy waste and bearing wear.

Minimising control valve throttling losses: Excessive control valve pressure drop is one of the largest hidden energy costs in process plants. With accurate DP measurement across the valve body, the EJA110E-JMS provides the data needed to right-size valve trim, reduce unnecessary pressure drop, and recover energy that would otherwise be dissipated as heat across the valve plug.

Stabilising production line throughput: Fluctuating differential pressures cause flow instability, which in turn forces operators to run processes conservatively — at lower throughput — to avoid quality excursions. The EJA110E-JMS's low noise floor and fast response time allow tighter control loop tuning, enabling higher, more consistent throughput without additional energy input.

Supporting predictive maintenance and uptime: Gradual changes in DP readings — rising differential across a filter, falling differential across a pump — are early indicators of equipment degradation. By trending these values in the PIMS historian, maintenance teams can schedule interventions during planned shutdowns rather than reacting to failures, eliminating the energy and production losses associated with emergency stops and restart ramp-ups.

All units are shipped from in-stock inventory, pre-tested against Yokogawa factory acceptance criteria, and covered by a 12-Month Warranty from the date of shipment. Each EJA110E-JMS undergoes loop calibration verification and output signal testing before dispatch, ensuring it is ready for immediate installation and commissioning on arrival.

Q1: How does the EJA110E-JMS contribute to measurable energy savings on a production line? The EJA110E-JMS provides the accurate, stable differential pressure signal required for closed-loop pump and compressor speed control via VFDs. By enabling the drive to maintain the process at its optimal operating point rather than a fixed speed, energy consumption in variable-flow systems is typically reduced by 20–40%. Additionally, early detection of fouling and equipment degradation through DP trending prevents the energy losses associated with degraded heat transfer and increased hydraulic resistance.

Q2: Which control systems and communication protocols is the EJA110E-JMS compatible with? The EJA110E-JMS supports 4–20 mA HART (revision 5/7) and FOUNDATION Fieldbus H1, making it compatible with virtually all major DCS and PLC platforms including Yokogawa CENTUM VP, Siemens PCS 7, Emerson DeltaV, Honeywell Experion, and Rockwell Automation PlantPAx. HART communication allows simultaneous analogue process variable transmission and digital device diagnostics over the same two-wire loop.

Q3: Can the EJA110E-JMS replace an existing differential pressure transmitter from another manufacturer? In most cases, yes. The EJA110E-JMS uses standard process connections (1/2" NPT or IEC flanged manifold) and outputs a standard 4–20 mA HART signal, making it a drop-in replacement for transmitters from Emerson (Rosemount 3051), Honeywell (STD800), and ABB (2600T) series in the same span class. Confirm the process connection standard, flange rating, and span range before ordering. Our technical team can assist with cross-reference validation.

Q4: What does the 12-Month Warranty cover, and what is the typical lead time? The 12-Month Warranty covers manufacturing defects, sensor drift beyond published specification, and electronic component failures under normal operating conditions from the date of shipment. Units are available from in-stock inventory and typically ship within 1–3 business days after order confirmation. Each unit is tested for output accuracy and loop integrity before dispatch. For urgent requirements, expedited shipping options are available — contact [email protected] or call +86 18359268345 for availability confirmation.