YT1000 valve positioner surge
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RT, the valve positioner isn’t working properly. A new YT1000 valve positioner was installed, but it experiences surging during calibration – there’s a hissing sound, and it can’t hold its position when switched on or off. Has anyone encountered this issue? What could be the reasons for this?
Has the 4-20ma signal been tested?
I don’t know if it’s 1000l or 1000r. In the case of surge, first check whether the air supply pressure is within the acceptable range; also examine whether the springs are fatigued, if there are any issues with the nozzle baffles or nozzles themselves, and whether the diaphragm has aged and is leaking air, among other things. This is assuming there is no problem with the diaphragm of your control valve.
If it’s a new locator, check the connection between the locator and the valve body. If it is a double-acting angular stroke type, it could be that the connection between the positioner and the cylinder is in the wrong position or loose.
It is possible to enter the locator parameter configuration to adjust the dead zone range, provided that the requirement for control accuracy is not high；