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> signal feedback is full different from actual value of valve > feedback signal not change until the valve varies It is impossible to know what is actually occurring without details. 1. Can you give some numerical examples of what the position of the valve is, compared to what the feedback...

Normally the Analog Output Module, AOM, module just works, there are no parameters needed to configure it. 1. Several different option cards share the same slot. Are you sure the module is an analog output module (either 6DR4004-8J or -6J? 2. The AOM card needs data from the positioner...

The Siemens PS2 uses terminals 61 (+) and 62 (-) for the 4-20mA 2-wire, loop powered analog output. Is that the same on your Arca positioner?

> that other USB serial adapters don't offer ? Generic USB/serial adapters that are not specifically designed with firmware to handle Modbus will have problems with Modbus RTU because of timing delay issues after the packet is finished. Gateways and adapters should be chosen for stated...

>Is there a one stop place I can go to learn about all of these standards, how they work, how to test these protocols? Not that I know of > RS-422,RS-232, RS-485 These are serial hardware busses. Busses are electrical in nature and just carry bits. Big item is RS-232 is point-to-point...

The quoted text is confusing. Is there an object under test in whatever process/scheme is going on here? Is the "glass bulb or fusible element" an object that is being tested in the heated liquid solution? A "glass bulb" might possibly refer to a certified liquid-in-glass thermometer a...

I can't help for that product.

Control Edge Builder for which product, the RTU, the PLC or the HC900?

A bare, uninsulated (exposed wires) junction is the fastest responding thermocouple junction but a bare junction is subject to a ground loop if the object that the thermocouple touches is at a potential different than the 'ground' potential of the measuring circuit. I suspect that the ground...

Heaters consist of nichrome resistance wire in a sheath packed with a white powder, normally magnesium oxide, an insulator, and a termination at the opening. Those spiral heaters start out as straight heating rod elements that are bent to shape. You can make mild bends in small diameter...

Yeah, the cosmic ray thing. It's that fall back position for "who knows why it failed?". Blame it on cosmic rays. It wouldn't be a programming bug that never accounted for a cold start in the absence of a valid persistent direction variable, which maybe was battery-backed with a dead battery?

The heater in the diagram appears to be a spiral shape heater. Google spiral heater elements. You need to know the line voltage driving the element, and the wattage needed. Size wise it's gotta fit your vessel. ±1°C might be a challenge if you have to get a certified calibration on the...

I assume that the 300°C is a typo (95°C?), because that rig is not a pressure vessel. The RTD should be a 3-wire RTD because the measuring device should be able to actively compensate for lead wire resistance, which is not the case with 2-wire RTDs. However, I have run across some 1/16 DIN...

What is stopping the solutions you've already discovered from being useful?

No idea what pressure you're dealing with. A direct acting electrical solenoid valve requires no differential like a pilot operated electrical solenoid valve does. Something like a direct acting solenoid like an ASCO 8262 series. A pressure gauge does not need a high Cv because there's...

Probably through-hole single layer PC boards, DIP chips, maybe some socketed PROMs? All linear DC power supplies? Does it have ribbon cables (which I despise)?

Most RO I've run into has far less conductivity, 0.05-5uS, so you must be dealing with some 'dirty' water to start with. Is the 'dirty' water contributing to the lining problem. What is the lining problem? Yes, there are insertion magmeters with an insertion/extraction valve assembly...

Is the RO treatment so good that the processed water does not have enough conductivity for the proper operation of the installed magmeter? The Siemens mag flowmeter spec sheet on my desk states it needs a minimum 10uS/cm conductivity.

>> AI : 1 channel, Potentiometer input representing the position, you need to check what is the potentiometer specification, I saw this potentiometer made by ETI System but I can't see the model number or specification, you can check here the correct model installed at your system : The manner...

Spiking on the wetted side infers pressure and then relief of that pressure. How? I'd lean towards electronic issues causing spiking, rather than wetted pressure connections. 1. Firmware re-initializing because of DC power supply outage or failure to regulate might cause a spike depending...