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19
Cautions on impulse piping
• For liquid, the impulse pipes should have an downward slope of 1/10 or more between the pro-
cess connection and the transmitter to prevent accumulation of gas, etc. in the detecting unit.
• For gas, the impulse pipes should have a upward slope of 1/10 or more between the process
connection and transmitter to prevent accumulation of liquid or condensat, etc. in the detecting
unit.
• Avoid any sharp bends in impulse pipe which may cause gas or liquid to accumulate in the
impulse pipe.
• Do not apply an excessive force to impulse pipe during the connection.
• Install condensate chambers or vent drain when impulse pipes can not be inclined.
• The impulse pipes used should be suitable for the working temperature, pressure standards.
• During installation, avoid mechanical constrains of the transmitter connections.
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ned transmitter must be checked before commissioning.
• To avoid the deterioration of the transmitter mounted externally, it will be mounted in a box
protection.
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need to be checked before started up. The transmitter must not be reused if it has been partially
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• Freeze protection.
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heater.
Do not exceed the temperature limits (measuring cell: 120°C maxi and transmitter: 85°C).
Even when the installations shut down the heat must be maintained, if not the transmitter and
impulse pipes must be drained to prevent freezing.
