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When you connect H475 to your DVC valve, it will warn you that there is no dd for your specific device. But you can still use that H475 to communicate with the valve. Just continue. It will use a generic dd that is close to the instrument that you are trying to work on...

Hello George, You need to contact the Global Service Center of Emerson to get the correct descriptor for your H475. The phone number is on the Emerson website. They are the one who can help you. You just need to tell them the serial number of your device... Also, you can still use your H475 to...

Hi! Can you tell me more about your issue? What's the walkie talkie got to do with LAN? Do you mean walkie talkie interferes with the LAN or what?

Have you checked your command going to your Rotork if it was indeed 20mA at 100%? Or the feedback if it was 20mA at 100%? If your command and feedback are 20mA at 100%, there is something wrong with the Rotork. If otherwise, the output channel has an issue...

If you have the flash card, open the LCD display and at the back of it, there is a memory card slot. While power to the MOV is off, insert the card to the slot. Power up the MOV. While booting up, it will get the update from the flash card. It will reboot a couple of times to complete the update.

Hi! Replying to your questions (with questions) - 1: If the AO is in the current mode does it mean that the resistance of the field must be exactly 250 Ohms? What if it mismatches by a lot or is near 0. - How are you measuring the resistance? Is it with power? Why do you want to check the...

If your AO is sending 1-5 VDC and you want to measure 4-20mA, then 250 ohm resistor connected in shunt will be a good choice. But if you are already already sending 4-20mA in the output, no need to put a resistor. You can use multimeter in series with your field instrument to measure the current...

This is absolutely correct!

First off, you have to input everything about your issue. Like, model of the transmitter, range, for pressure/temperature, you are using what instrument to simulate and how you are simulating, is it Hart/Fieldbus, etc. Maybe there is a switch/jumper in the transmitter that prevents you from...

Looks like a Torque fault on both open and close. Usually this happens when both limits were reached. What is the setting of open and close? Is it on torque? How much? For now, you have to loosen the gland packing and try to move to the close position (your indicator says it is fully open) by...

When asking for help, please make sure you have given all the needed info. Else, everybody is at lost. If you have not fixed your issue and still want somebody to help you, please try to answer the following; 1. When you say you give a command to open/close in the DCS, do you see the 17% and...

I think it is better to call Emerson for support. Unless you want to exhaust your effort in trying to break the 3-digit code set by that "somebody". It was noted in the manual that you have to record the code for future use and this should be known to all maintenance guys.

The commands need 24VDC control voltage to activate them. Without power, they will not work.

It could be the type of sensor that they used. I am guessing the CA or CD has a more sensitive sensor than the TA/TG. Just to clear up on my first reply, Overpressure limit is actually the maximum amount of pressure (out of the pressure range) that can be applied to a pressure sensor without...

MWP is different than OPL. The MWP or Maximum Working Pressure refers to the maximum permitted pressure that the pressure transmitter can handle continuously (safe operating limit). This is where your field range is tied to and it is always higher than the range you requested when you ordered...

The keyword here is "flashing red light". This means the light should blink. What I could understand from the thread starter is that, the light stays ON the moment the sensor is closed. But he never came back to update this topic. Might already been resolved.

Can you post how you wired your circuit? Does this mean the light does not flash when it activates? Does the light has an electronic component aside from the capacitor?

Here is a diagram of the AUMA MOV where you can see all the connections for control and feedbacks.

According to this drawing from the internet, the flange to flange measurement is 9 inches (228.6mm)

Hello Sona, Does this mean it is working? If you need more explanation, just reply to this thread.