Yokogawa EJA110E Differential Pressure Transmitter

The EJA-E series of transmitters is Yokogawa’s most recent evolution of the DPharp family of pressure transmitters. Released in 2012, it combines the ruggedness and success of the work-horse EJA-A series with the performance of the thoroughbred EJX-A series to deliver the type of product you have come to expect from Yokogawa.

The EJA110E is our standard traditional-mount differential pressure transmitter in this series.

EJA110E features include:

  • 0.055% Accuracy (0.04% Accuracy optional)
  • 0.1% Stability per 10 years
  • 90 ms Response Time
  • Exida and TUV SIL 2 / SIL3 Certified
  • MWP 2,300 psi (MWP 3,600 psi option)
  • Local Parameter Setting (LPS)
EJA110E

Plants run better with Yokogawa differential pressure transmitters.

At it’s heart, Yokogawa’s Differential Pressure Transmitter with DPharp digital sensor offers the performance and device intelligence needed to get greater insight into your process.

Digital Performance

Yokogawa’s DPharp digital sensor offers twice the performance and stability of the competitor’s analog sensors. The DPharp uses the latest in IC Chip-style design and manufacturing technology. Analog sensors are based on older design technology. Although analog sensors are good, the modern DPharp sensor out performs them. A Yokogawa transmitter with DPharp digital sensor will give you the consistentreliableaccurate measurement you need.

Accuracy Under All Operating Conditions

Yokogawa’s DPharp sensor has the ability to measure the differential pressure (DP), static pressure (SP), and sensor temperature from a single sensor. Giving these three pieces of process data, the EJA110E transmitter can compensate the DP measurement for Temperature Effect and Static Pressure Effect in real time. This is referred to as Dynamic Compensation and improves the DP measurement accuracy. Competitor’s analog sensors can only measure DP and Sensor temperature. So, theirs can compensate for temperature Effect; but, since the SP measurement is missing, it cannot compensate for Static Pressure Effects.

Stability Under All Operating Conditions

To some degree, all pressure sensors on the market provide stable measurement with variations in temperature and static pressure. But what happens when the sensor is over-pressured (pressure > sensor Upper Range Limit (URL)) – like occurs when a manifold is incorrectly sequenced during start-up or shutdown? Or a process upset? Analog sensors are actually damaged during these events requiring the transmitter to be recalibrated to return to accurate operation or even replaced. The EJA110E can withstand overpressure events up to 2,300 psi. Once it returns to normal operating pressure (pressure < URL of the sensor), the transmitter will return to operation within the defined accuracy and stability specifications - no need to recalibrate.  Basically, the Yokogawa DPharp sensor has a larger operational envelope compared to an analog sensor.

More Information

Save up to 20% on CAPEX spending using the DPharp’s multi-sensing capability. With our competitor’s transmitters using analog sensors, any application that requires measurement of both differential pressure (DP) and static pressure (SP) requires two separate transmitters – one to measure the DP and one to measure the SP. Yokogawa’s EJA110E transmitter with multi-sensing DPharp sensor, can measure both process variables (DP and SP) with a single transmitter. Two transmitters will always cost more than one transmitter.

Local Indicator

All of the process variable’s measured by the EJA110E transmitter can be displayed on the easy to read local indicator. Unlike competitor’s transmitters, the indicator is not driven off the 4 to 20 mA analog signal, but, exist on a seperate circuit. This allows the display to operate indiependantly from the output signal. This allows for the local display to indicate information that maybe more useful at the transmitter location.

Standard Diagnostics

The EJA110E has 40 self-diagnostic checks to ensure that everything is running smoothly within the transmitter. But, all transmitters on the market have a level self-diagnostic checks. However, Yokogawa has two that are not offered by competitors. First, the transmitter features a patented Back-check Technology that reverse checks all calculations in real-time. Second, the DPharp sensor is an active sensor. This means that the sensor is constantly supplying a signal even when the process has not changed. If the signal is lost from the sensor, the transmitter knows there is an issue. Competitor’s analog sensors are passive. They do not supply a continual signal, so, is the sensor still working when there is no signal?

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