Smart pneumatic valve positioner can not complete the calibration of reason and solution

the main characteristics of intelligent pneumatic valve positioner, below to learn about the intelligence calibration pneumatic valve positioner can not complete the cause and the solution.
calibration usually smart pneumatic valve positioner, direct use of the automatic calibration function of hand operator can do to adjust the calibration of pneumatic valve, but sometimes can't through the automatic calibration, then can use their hands in the operator manual calibration function, when after calibration by manually, then automatic calibration in general, there is no problem.
when the intelligent positioner of automatic and manual calibration can't through, mainly should follow the steps below to check processing:
confirm there is no problem, gas path of the pneumatic valve positioner gas path is not blocked.
and check whether due to installation problems, such as pneumatic valves have jamming phenomenon in the process of the switch.
, check the Settings of the parameters of the pneumatic valve in intelligent positioner is correct, such as pneumatic valve type and size consistent with the actual parameters, such as, need special attention is that the pneumatic valve type shall be consistent with actual use, because of the pneumatic valve model includes many implied set parameters of the pneumatic valve manufacturer, if choose the wrong set of mobile operator, the make and model of the pneumatic valve can cause some unforeseen errors.
, pneumatic valve positioner feedback caused by inappropriate installation position, the intelligent positioner can't complete the automatic and manual calibration. Often due to transport or other reasons, make intelligent positioner feedback pole lock nut loose, causing pneumatic valve positioner feedback pole deviated from the original installation location, then you need to adjust feedback pole installation location. Generally intelligent adjustment on the pneumatic valve has special feedback pole location hole, close the adjust the gas source of pneumatic valve, directly through the feedback pole positioning hole to determine the feedback pole position. Because the smart pneumatic valve positioning apparatus has a strong adaptability, some general feedback pole installation position deviation will not cause the intelligent positioner fault, but if the deviation is too large can cause pneumatic valve positioner can not complete the automatic and manual calibration.