Yamatake Corporation
4-16
ST3000 Smart Transmitter Series 900 Electronic Differential Pressure/Pressure Transmitter
(4) Determine the connecting pipe schedule number and the nominal thickness of the
connecting pipe from the process based on conditions such as the process pressure.
Figure 4-12 Example of Piping
Auxiliary equipment
(1) Oil sealing and air purging
If the pressure medium (such as suspension, high viscosity, and corrosive fluid) should
not be led directly to the element, avoid it by means of sealing or purging. Various
sealing and purging methods are available. Consult us for each case.
(2) Preventing pulsations
If the process has serious pulsations or great pressure fluctuations, provide a throttle
valve in the middle of the connecting pipe to prevent pulsations.
Capacitor
Main valve
Main valve
Main valve
Main valve
Local valve
Local valve
Local valve
Local valve
Drain valve
Drain valve
Drain valve
Drain valve
Process
Process
Process
Process
Siphon
C. Moist gas
A. Liquid
B. Dry gas
D. Steam