Most differential pressure measurements needn't to be compensated with air static differential pressure in boiler air and flue gas system

but in the measurement of air box-furnace differential pressure

the distance in the vertical direction between the connections in ducts on both sides of the transmitter is remarkable

the air static differential pressure is in the same order of magnitude with the actual measured differential pressure.Therefore

the compensation of the measurement results is necessary.However

at present

domestic power plants have not introduced compensation in measurement of air box-furnace differential pressure

which causes the measurement values is much lower than the design ones

misguiding the operation personnel think it failed to establish the normal air box-furnace differential pressure and act wrong.It suggests introducing measurement compensation for the air box-furnace differential pressure as soon as possible

so that the operators can achieve accurate monitoring information.