The EJA-E series of transmitters is Yokogawa’s most recent evolution of the DPharp family. Released in 2012, it combines the ruggedness and success of the work-horse EJA-E series with the performance of the thoroughbred EJX-A series to deliver the type of product you have come to expect from Yokogawa. The EJA130E is a differential pressure transmitter designed to work in a high static pressure enviroment.
Yokogawa’s transmitter 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.
Primary Variable Differential Pressure (DP)
Secondary Variable Static Pressure (SP)
Primary Variable ±0.055% of DP Span
Secondary Variable ±0.5% of SP Span
Primary Variable ±0.1% of URL per 10 years
All Capsules 4,500 psi
Primary Variable ±0.03% of URL
Primary Variable 100:1
All Capsules 19,100 psi (132 MPa)
EJX-A Series ±3σ