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If there is no instrument air, can compressed air from a screw compressor be used as instrument air?

2019-05-28View Original

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If there is no instrument air, can compressed air from a screw compressor be used as instrument air?
Reply #22019-05-28
Sure, it’s just that there will be more malfunctions and more maintenance required in the future
Reply #32019-05-28
Check the design specifications for gas supply of instrument 20510. You can’t use this directly.
Reply #42019-05-29
Depending on the local atmospheric conditions, compressed air generally contains trace amounts of water, and without treatment it can easily cause damage to downstream equipment due to moisture presence or freezing in winter
Reply #52019-05-29
It should be possible, but post-treatment needs to be added
Reply #62019-05-29
It can be used temporarily. It won’t work in the long run. See the reply on floor 3
Reply #72019-05-29
If there is no instrument air, nitrogen can be used as a substitute. Using compressed air is definitely not an option; water-containing air entering the actuator can cause severe damage to the circuit board and nozzles.
Reply #82019-05-29
No, compressed air that has been compressed directly without going through a dryer to remove moisture can damage the equipment
Reply #92019-05-29
No, it’s not possible. If it were possible, there would be no need for an instrument air supply at all; compressed air could be used directly. The company certainly wouldn’t go to the trouble of creating an instrument air supply just for nothing, haha. Moreover, the instrument air supply is a very important element in the field of instrumentation! One can’t be careless. Everyone tries every possible way to deal with it, but you just decide not to do anything about it at all, hahaha – that’s really unacceptable! In winter, when the temperature is below the dew point, harm arises immediately. By then, it’s likely that a large number of control valves will fail to function properly, and the consequences will be……
Reply #102019-05-29
As instrument air, it must meet cleanliness standards; for details, please refer to the instrument air supply specifications

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