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TN4FCXA2
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3- Measurement of steam pressure
A condensate vessel must be installed between
the transmitter and the pressure intake.
The piping between the condensate vessel and the
transmitter must be pre-filled with water.
A bleed must be installed.
2- Measurement of liquid pressure
The transmitter must be installed below the piping.
The piping should be installed in such a way that no
gas accumulates in the transmitter. The installation
of a reservoir for collecting gas can be useful.
Isolating
valve
Piping mechanism
Connection
piping
Venting into atmosphere
Connection
piping
Venting into
atmosphere
Pressure reading connector
Piping
mechanism
Isolating valve
Precautions for connecting to the piping mechanism
• For liquids, the connecting pipes of the mechanism toward the transmitter must have a minimum
downward slope of 1/10 to avoid gas accumulations.
• For gases, the connecting pipes of the mechanism toward the transmitter must have a minimum
upward slope of 1/10 to avoid liquid or condensate accumulations.
• Do not bend the piping excessively, in order to avoid the accumulation of liquid or gas.
• During the connections, do not submit the pipes to excessive mechanical constraints.
• Use condensate vessels or drains if the pipes could not be tilted.
• The pipes must be selected according to the conditions of use of pressure and temperature.
• When mounting, avoid any mechanical constraints on the take up pipes or take appropriate
measures.
• In the case of external damage (deposit, corrosion, overflow, shock etc.) or in case of fire, the
transmitters concerned must be checked before commissioning. Avoid external damage to the
transmitter by installing it in a protective casing.
• The transmitter must not be exposed to fire. In case of fire, the transmitter must be previously
verified before being returned to service. It must not be used if it has been partially or totally
exposed to heat and/ or flames.
• Protection against freezing.
If there is a risk of the fluid mechanism freezing, the transmitter and connecting pipes must be
equipped with a heater, as well as a steam or electrical tracer.
Do not exceed the limits of the intended temperatures (measuring cell 120° max, transmitter
85°C).
Even if the installation stops, the heating should be maintained, otherwise the transmitter and
connecting pipes must be drained to prevent freezing.
