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Model EJAA, EJAA and. EJAA this manual thoroughly and fully understand how to operate This manual should be passed on to the end user. User’s manual • Read online or download PDF • Yokogawa EJAA User Manual. View and Download YOKOGAWA EJAA user manual online. EJA Series Differential Pressure and Pressure Transmitters. EJAA Transmitter pdf manual.

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Note that changing the unit here changes the unit for A Even if the BT power supply is turned off or the communication cable is disconnected during test output, it is held for approximately 10 minutes. OK The higher range value is changed while the span remains constant.

User’s Manual Model EJAA, EJAA and EJAA Differential |

Measurement See General Specifications sheet. Note that DPharp is calibrated with high accuracy before shipment, so span should be set using the normal range setup. Orifice NOTE Check that the process pressure tap valves, drain valves, and 3-valve manifold stop valves on both low pressure and high pressure sides are closed, and that the 3-valve manifold equalizing valve is opened.

In this instrument, changing the low range value also automatically changes the high range value, keeping the span constant. Since special maintenance and management procedures involving traceability of each instrument to higher-level standards are required for calibration to the 0.


The transmitter and distributor are connected as shown below. After two hours from when an error occurs, the error message of ejaa110a error will be recorded.


See Chapter 3 for details. If it is not possible to configure the piping for self-draining or self-venting operation, you will need to loosen the drain vent screw on the transmitter to completely drain vent any stagnated liquid gas. SET Use the or C Is impulse piping NO to high pressure and low pressure side correct? Users are prohibited by law from modifying the Always turn OFF power and shut off and release construction of a flameproof type transmitter.

Y Long vent Total vent plug Length: Differential pressure and pressure transmitters 66 pages. Multivariable transmitter hart ejw110a type 52 pages. Follow the procedure below to change the unit.

Pay special attention to ejs110a applications. Tap valve high pressure Tap valve low pressure a Follow the procedures below to introduce process pressure into the impulse piping and transmitter. EPS for use in hazardous locations. YES Is process variable itself abnormal? With present settings of 0 to 30 kPa, C Ema110a 1 Pollution Degree 2 “Pollution degree” describes the degree to which a soild, liquid, or gas which deteriorates dielectric strength or surface resistivity is adhering.


High pressure side is on the left side.

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. NO Is zero point adjusted correctly?

Model eja130a – Yokogawa EJA110A User Manual

In case of its maintenance, soft and dry cloth is used. Impulse Piping Installation Precautions Note 1 Units set using Engineering unit D21 are not indicated. If the output signal 5 Close the high pressure and low pressure tap exhibits wide fluctuations hunting due to periodic valves. When mounting, use the two gaskets and the four bolts provided with the 3-valve manifold. Output terminal cable 5 Carefully pull the CPU assembly straight forward to remove it.

Press the to enter the setting.

If there is more than one error, the error number changes at two-second intervals.


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