Piezoelectric valve and feedback potentiometer of Siemens positioner
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Siemens positioners, single- and double-acting piezoelectric valves, and feedback potentiometers are available. Those who understand should contact me via private message. Valve failures and fluctuations are all problems with the piezoelectric valve ； Any unexplained fluctuation in feedback when the valve is closed is due to a problem with the potentiometer. Replacing the main core components is as simple as replacing a new locator, and it’s very convenient!
The last edit to this post was made by vzb_2000 on 2019-2-12 at 10:04. Please share the replacement method and diagrams. Could you also provide detailed instructions for diagnosing faults, as well as the operation manual for replacing the potentiometer and piezoelectric module?
The Siemens valve positioner PS2 is frequently used; it consists of three main components: the circuit board, the piezoelectric valve, and the valve position feedback mechanism. When a fault occurs, I usually start by replacing it with a good circuit board for testing; if that doesn’t work, I replace the piezoelectric valve, and finally the feedback mechanism. The circuit board is quite delicate; we can’t repair it. The piezoelectric valve can be removed and disassembled to check its condition; otherwise, it needs to be replaced. The feedback mechanism measures changes in resistance; as the feedback rod rotates 360 degrees, the resistance changes as well, which is used to determine whether something is good or not.
Add me on VX to chat: 18017508615. I’ll tell you the methods and provide detailed pictures and text then
?VX: 18017508615, let’s communicate and improve together. Piezoelectric valves come in single-acting and double-acting types; which one do you need? It’s not convenient to give quotes here; let’s chat via VX
Circuit boards generally don’t break. What tends to fail easily is the piezoelectric valve, as the diaphragm inside it can become fatigued. Just because the resistance value measured by the feedback potentiometer keeps up does not mean it is good, as sometimes an oxidation occurs at a certain resistance level and the multimeter fails to detect it.
Is there any need to hide this? It can just be said openly; there’s no reason to act as if others don’t know.
The price is mentioned; the website needs to contact me, with nothing hidden. What’s the market price for this?
You can add me on WeChat at 18017508615