Navigation

Pressure Level Transmitter value conversion

Created by: AlecTek at: 5/31/2011 12:50 AM (14 Replies)

Rating (2)

Thanks 9

Result pages:: |; 1 | 2; |

15 Entries

Entries per page: 10 | all

6/1/2011 12:35 AM	Rate (0)
AlecTek Posts: 95 Rating: (0)	Hi, H-H and Ayman Elotaify, I fully understand the number 27648 now and Iget that10885.04 is 27648 divided by 2.54 cm/in. I stillcan't figure outthe number 346.6570, but I think it won't be a big problembecause I can create a new number based on the 27648 theory when I calibrate the tank. Thank you guys. Best reagrds
AlecTek Posts: 95 Rating: (0)
Suggestion To thank Quote Answer

6/1/2011 1:29 AM

Rate (1)

Ayman Elotaify

Platinum Member

Joined: 5/28/2008

Last visit: 12/4/2023

Posts: 4486

Rating:

(834)

Hello AlecTec

Could you give us the radius of the tank?
Is it equal to 3.16 meters?

As H-H told you yesterday for level, let me descripe the volume in this way:

Analog Counts	Level	Volume V= pir² L
27648	2.54 m	3.14* r²* 2.54

y		x

0	0	0

X = Physical volume = y * (3.14* r²* 2.54)/ 27648

For constant 346.657:

(3.14* r²* 2.54)/ 27648 = 1/346.657

Radius = r = 3.16 m

Tell us if this value is true.

Last edited by: Ayman Elotaify at: 6/1/2011 1:55 AM

Last edited by: Ayman Elotaify at: 6/1/2011 1:37 AM

Ayman Elotaify

This contribution was helpful to

1 thankful Users

AlecTek

6/1/2011 8:48 PM	Rate (0)
AlecTek Posts: 95 Rating: (0)	Thanks Ayman. r is a variable, not included in the number 3466.57, sorry I misplaced the point in the previous posts. There are two functions for the same pressure transmitters which are 4-20mA, 0-100 inch water; ----------------------- The equation of Pressure to Volume is like this: V = (AI / 3466.57 * Range * r * r ) / 100000 + C V: Volume, unit: liter or m^3 AI: 0-27648 Range: ? r: radius, unit: ? C: constant, cone volume of bottom. ------------------------- The equation of Pressure to Height is like this: H = AI * Range / 10885.04 = AI * range / (27648/2.54) H: height in meters; AI: 0-27648; Range: I believe it is 1, unit in inch; 10885.04: unit in inch/meter ------------------------- Best reagrds
AlecTek Posts: 95 Rating: (0)
Suggestion To thank Quote Answer

6/1/2011 11:47 PM	Rate (1)
H-H Platinum Member Joined: 7/2/2008 Last visit: 11/27/2023 Posts: 928 Rating: (304)	Hello AlecTek, AlecTek In another conversion, pressure to volume, it divided 346.6570, and times the radius squred. *V = πhr²* V= 3.14 * (AI/10885.04) * r² V= (AI / 3446.57) * r² I guess you know now where the 3446.57 comes from. Now h (AI/10885.04) is in meter and if the radius is in meter as well you get a volume in m³. To convert it to liters just multiply by 1000. Is it still not clear? Best regards. H-H

Suggestion To thank Quote Answer
This contribution was helpful to 2 thankful Users Ayman Elotaify AlecTek

6/2/2011 1:16 AM	Rate (0)
AlecTek Posts: 95 Rating: (0)	Oh I got it. I am so stupid!
AlecTek Posts: 95 Rating: (0)
Suggestion To thank Quote Answer

Share this page:

Share this page on...

Created by: AlecTek at: 5/31/2011 12:50 AM (14 Replies)

Rating (2) Thanks 9

15 Entries

Entries per page: 10 | all

Last edited by: Ayman Elotaify at: 6/1/2011 1:55 AM

Last edited by: Ayman Elotaify at: 6/1/2011 1:37 AM

This contribution was helpful to

This contribution was helpful to

15 Entries

Entries per page: 10 | all

All about Process Instrumentation / MI Digital Solution / Valve Positioner / Analyzer Systems / Continuous and static Weighing Technology

Follow us on

Rating (2)

Thanks 9