Yokogawa EJA530E User Manual download pdf (Page 25)

<5. Installing Impulse Piping>

5-2

IM 01C25F01-01E

(3) Impulse Piping Slope

The impulse piping must be routed with only an

upward or downward slope. Even for horizontal

routing, the impulse piping should have a slope of

at least 1/10 to prevent condensate (or gases) from

accumulating in the pipes.

(4) Preventing Freezing

If there is any risk that the process uid in the

impulse piping or transmitter could freeze, use a

steam jacket or heater to maintain the temperature

of the uid.

NOTE

After completing the connections, close the

valves on the process pressure taps (main

valves), the valves at the transmitter (stop

valves), and the impulse piping drain valves,

so that condensate, sediment, dust and other

extraneous material cannot enter the impulse

piping.

5.2 Impulse Piping Connection

Examples

Figure 5.3 shows examples of typical impulse

piping connections. Before connecting the

transmitter to the process, study the transmitter

installation location, the process piping layout,

and the characteristics of the process uid

(corrosiveness, toxicity, ammability, etc.), in order

to make appropriate changes and additions to the

connection congurations.

Note the following points when referring to these

piping examples.

• If the impulse line is long, bracing or supports

should be provided to prevent vibration.

• The impulse piping material used must

be compatible with the process pressure,

temperature, and other conditions.

• A variety of process pressure tap valves (main

valves) are available according to the type

of connection (anged, screwed, welded),

construction (globe, gate, or ball valve),

temperature and pressure. Select the type of

valve most appropriate for the application.

F0503.ai

Tee

Stop valve

Drain valve

Drain plug

Union or flange

Tap valve

Figure 5.3 Impulse Piping Connection Examples

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 51 52

Comments to this Manuals

No comments

Yokogawa EJA530E User Manual Page 25

Comments to this Manuals

Related products and manuals for Sensors Yokogawa EJA530E