Yokogawa model eja110a installation

Precautions of EJA110A installation

Before installing the transmitter, read the cautionary notes in Section 2.4, “Selecting the Installation Location.” For additional information on the ambient conditions allowed at the installation location, refer to Subsection 10.1 “Standard Specifications.”

Mounting of EJA110A

The distance between the impulse piping connection ports is usually 54 mm (Figure 4.2.1). By changing the orientation of the process connector, the dimension can be changed 51 mm or 57 mm. 

The transmitter is shipped with the process connection, according to the ordering specifications. To change the orientation of the process connections, refer to Section 4.3. 

The transmitter can be mounted on a nominal 50 mm (2-inch) pipe using the mounting bracket supplied, as shown in Figure 4.2.2 and 4.2.3. The transmitter can be mounted on either a horizontal or a vertical pipe.  

When mounting the bracket on the transmitter, tighten the (four) bolts that hold the transmitter with a torque of approximately 39 N·m (4kgf·m).

Changing the process connection

The transmitter is shipped with the process connection specified at the time of ordering. To make a change such as modifying the drain (vent) plug(s) attached to the upside of the cover flange on shipment to be attached to the downside follow the procedure below. 

To begin, use a wrench to slowly and gently unscrew the drain (vent) plug(s). Then, remove and remount them on the opposite side. Wrap sealing tape around the drain (vent) plug threads (*1 in the figure below), and apply a lubricant to the threads of the drain (vent) screw(s) (*2 below) to screw it (them) in. To tighten the drain (vent) plugs, apply a torque of 34 to 39 N·m {3.5 to 4 kgf·m}. Tighten the process connector bolts uniformly to a torque of 39 to 49 N·m {4 to 5 kgf·m}.

Rotating transmitter section of EJA110A

The DPharp transmitter section can be rotated in 90° segments. 1) Remove the two Allen screws that fasten the transmitter section and capsule assembly, using the Allen wrench. 2) Rotate the transmitter section slowly in 90° segments. 3) Tighten the two Allen screws to a torque of 5 N·m.

Changing the direction of integral indicator of EJA110A

Important always turn OFF power, release pressure and remove a transmitter to non-hazardous area before disassembling and reassembling an indicator.