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Anonymous Poster #1

Endress & Hauser Raddar NMR84

09/03/2019 8:04 AM

is it possible to install NMR84 in hand dip hatch? if yes how can we do the manual dip

can it be install in still-pipe

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#1

Re: Endress & Hauser Raddar NMR84

09/03/2019 8:31 AM

A1) yes.

A2) That's a question for the Designer to answer, not CR4.

A3) yes.

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#2

Re: Endress & Hauser Raddar NMR84

09/03/2019 9:13 AM

<...Raddar...> Radar is used whenever the measurement is too difficult to carry out by most other techniques. The prospect of <...manual dip...> suggests that radar is overkill for the application.

Has the plant passed through a formal HazOp Study yet?

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#3

Re: Endress & Hauser Raddar NMR84

09/04/2019 5:11 AM

If the hand dip hatch is a true refection of the level to be measured.

The mount must be secure and free from vibration.

Yes,it can be mounted in a still-pipe,provided that it is of at least 100 mm diameter.

A still-pipe is one of the factory recommended mounting methods.

These devices are very reliable and require very little maintenance if properly installed according to the User Manual.

Here is a link in case the manual has been lost or misplaced:

https://portal.endress.com/wa001/dla/5001045/8424/000/00/TI01253GEN_0116.pdf

Reference page 15 for installation.

Good luck.

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Anonymous Poster #1
#4
In reply to #3

Re: Endress & Hauser Raddar NMR84

09/04/2019 8:59 AM

Thanks for replying

If the radar installed, hand dip will not be possible? its floating roof tank, my question any alternative or idea to make both of them possible

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#5
In reply to #4

Re: Endress & Hauser Raddar NMR84

09/04/2019 10:41 AM

In the case of a floating roof,I would suggest securely mounting a 6" diameter pipe to the inside of the tank,extending to the bottom.

Cut the bottom of the pipe at a 45 Degree angle to allow the level inside of the pipe to be the same as the actual tank level.

Alternatively, a pressure transmitter mounted to the bottom of the tank,perhaps on an outlet flange.You will have to know the specific gravity of the liquid.You will need a method to transmit this data to a display terminal or computer.

Rosemount makes some good ones,such as the 305L level transmitter.

It is available with 4-20 mA HART®, WirelessHART®, FOUNDATION™ Fieldbus, PROFIBUS®, 1-5 V Low Power HART®

The company will be glad to answer all of your application questions.

Here is a link to their site.Select your country from the drop down menu.

https://www.emerson.com/en-us/automation/rosemount

https://www.emerson.com/en-us/automation/rosemount

Here is a link to a laser sensor for floating cover storage tanks:

https://www.azosensors.com/article.aspx?ArticleID=755

A laser monitor looks like the best option to me,but you will have to do your homework to decide which is best for your application.

Good Luck!

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#6

Re: Endress & Hauser Raddar NMR84

09/04/2019 11:58 AM

Why <...Raddar...>? Why not some other technique?

What is in the <...tank...>, its temperature and its pressure?

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Anonymous Poster #1
#7

Re: Endress & Hauser Raddar NMR84

09/10/2019 5:53 AM

If gauging reference hight changed, Do I need to recalibrate the whole tank and establish new calibration table or not?

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#8
In reply to #7

Re: Endress & Hauser Raddar NMR84

10/02/2019 4:13 PM

Yes, of course.

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