Pressure Transmitter Installation at 410 deg C

In summary, Edmund is seeking help with calculating the length of tubing needed for a pressure transmitter application at high temperatures. The transmitter can only withstand up to 350 degrees Celsius, but the process temperature is 410 degrees Celsius. The ambient air temperature is 65 degrees Celsius and the maximum pressure being measured is 0.6 inH2O. Edmund provides information about the tube material and diameter, as well as the ambient temperature and wind speed at the installation location. He also mentions the need for coiled or zig-zagged tubing to minimize space.
  • #1
ednalds
2
0
Hi,

I have an application of pressure transmitter at 410 deg C max. process temperature. Transmitter can withstand only up to 350 C at Atm pressure.
The original length of tubing for maximum working Temp of 310 C is shown in the attach file (Sketch B) and We are planning to extend the length of tubing
so the temperature will decrease from 410 C (process side) to 350 C or even to 310 C (at transmitter connection). Maximum ambient air temperature is 65 deg C. Maximum pressure we are measuring is 0.6 inH2O.
Is there anyone can help me to have the formula to calcualte the length of tubing, X in the attached sketch A?

Thank you.

Regards,
Edmund
 

Attachments

  • 410 deg C Installation.JPG
    410 deg C Installation.JPG
    15.2 KB · Views: 459
Physics news on Phys.org
  • #2
I don't have an equation to solve your problem, but I can suggest some points to consider. The first is that we don't know the diameter, thickness, or material of the tube. For example, copper conducts heat very well, but stainless steel is not a very good conductor. So this suggests your pickup tube needs to be made from stainless steel. The next issue is that it's not clear if the ambient air is moving or not. Still air is a very poor conductor of heat which suggests you'll need forced air or some sort of heat sink.

I'll suggest a tube made from the smallest diameter stainless steel tube that will work for you, and have it coiled or zig-zagged against a good heat sink.
 
  • #3
Hi, Ryoko.

Thanks for the response.

Here the new info I got from our design standard.
Tube Material: 316/316L SS
Tube Diameter: 1" (But we will try to propose 1/2" if needed) Sch 80
OD / ID: 3.34 / 2.43 cm for 1" dia.
2.13 / 1.39 cm for 1/2" dia
Ambient Normal maximum temperature (hottest month) is 44 deg C with an average of 37 deg C. The previous 65 deg C temp is only our design temp.
Maximum basic Wind Speed, 3 sec. gust (at 10 m above ground for 50-year mean recurrence intervals) is 155 km/hr.
The device will be installed at 13 and 14 meters above ground.
New process Temp is 420 deg C instead of 410.
Required Temperature at the end of tubing is 310 deg C.

Coiled or zig-zagged can also help to minimize the space.

Regards,
Edmund
 

1. What is the maximum temperature that a pressure transmitter can be installed at?

The maximum temperature that a pressure transmitter can be installed at is 410 degrees Celsius. This is the upper limit for most standard pressure transmitters, as they are designed to withstand high temperatures and pressures.

2. What factors should be considered when installing a pressure transmitter at 410 degrees Celsius?

When installing a pressure transmitter at 410 degrees Celsius, it is important to consider the material compatibility of the transmitter with the process media, the accuracy and stability of the transmitter at high temperatures, and the proper installation techniques to ensure accurate readings.

3. Can a pressure transmitter be installed at temperatures higher than 410 degrees Celsius?

No, most standard pressure transmitters are not designed to withstand temperatures higher than 410 degrees Celsius. Attempting to install a transmitter at higher temperatures can result in damage to the instrument and inaccurate readings.

4. What precautions should be taken when installing a pressure transmitter at 410 degrees Celsius?

When installing a pressure transmitter at 410 degrees Celsius, it is important to use proper personal protective equipment and follow all safety guidelines. The installation area should be well-ventilated and the transmitter should be handled with caution to avoid burns or injuries.

5. Are there any alternatives to installing a pressure transmitter at 410 degrees Celsius?

If the process requires measurements at temperatures higher than 410 degrees Celsius, there are specialized pressure transmitters available that can withstand even higher temperatures. However, these instruments may be more expensive and may also have limitations on their accuracy and stability.

Similar threads

I Centrifugal separation into hot & cold air streams?
    • Classical Physics
Replies
1
Views
997
Effects of extreme pressure on materials
    • Materials and Chemical Engineering
Replies
8
Views
1K
How do I find an enthelpy value if my temp. is below 50 deg. celcius?
    • Thermodynamics
Replies
8
Views
1K
As much steam as possible from engine exhaust gas + warm water?
    • General Engineering
Replies
25
Views
2K
Calculating Heat Exchange Requirements for Ethanol Condenser
    • Engineering and Comp Sci Homework Help
Replies
9
Views
2K
Pressure Testing (furnace installation leak)
    • Mechanical Engineering
Replies
3
Views
2K
Pressure vessel Design - Splay out concern
    • Mechanical Engineering
Replies
3
Views
1K
Producing Dry Saturated Steam in a Fire Tube Boiler
    • Engineering and Comp Sci Homework Help
Replies
5
Views
3K
What Equations Should I Use to Solve Fluid Dynamics Problems in a Pressurized Container?
    • Mechanics
Replies
2
Views
2K
How do I find pressure coefficient?
    • Introductory Physics Homework Help
Replies
1
Views
3K

Hot Threads

Recent Insights

Back
Top