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directly.
2.Adjust zero with the changing of season.
3.Maintain the temperature constancy of fareastone capillary.
4.3 Calibration instrument
The calibration of flanged transmitter is generally same with normal
transmitter. The only difference is that it needs certain equipment to make seal
connection with flange. This equipment will show us the measurement
standard pressure.
4.3.1 Flanged level transmitter
There are some notes in the using of flanged level transmitter. Flat flanged
level transmitter should be used for normal sticky medium. Inserted flanged
level transmitter should be used for big viscidity, easy to precipitate and
suspension liquid medium. The measuring diaphragm must be penetrated into
tower inwall, at least next to tower inwall. The measured medium may abrade
the diaphragm if it has big flow rate and strong grinding. It can be used after
adopting corresponding measures.
The measurement computing method of flat flanged level transmitter and
inserted flanged level transmitter is same.
4.3.2 Using without migration (see below figure)
The instrument should be installed in the lowest liquid level as the same
horizontal height. When we measure the open capacity, negative pressure
diaphragm plate of instrument will be filled in atmosphere. When we measure
the sealed container, the upside of vessel will be covered in negative pressure
side diaphragm plate. If the side of negative pressure can keep dry,
condensing tank will not be installed. Or condensing tank will be installed. The
condensate will be drained away from the tank. Turn off the NO Valve when
the condensate was drained away in order to make transmitter to support
