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Parametering a Sitrans LR200

Created by: simatic_user at: 4/24/2008 7:19 AM (2 Replies)

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4/24/2008 7:19 AM	Rate (0)
simatic_user Advanced Member Joined: 2/13/2007 Last visit: 8/1/2024 Posts: 20 Rating: (0)	Dear Experts, i am very confused assign parameters to an LR200 (7ML54231GB000BB1) in an application of one tank with 3 meters with ice cream. Please see attached picture with distances and the escenary. My doubt is where locate my axis of reference (zero). Radar to low level point of tank or low level point to radar. I have tried of different ways y my true level is not equal to level indicated in the radar. Please, help me to find the following parameters based in attached picture. Low Calibration Point (m) High Calibration Point (m) Sensor Offset (m) Level Offset (m) Thanks in advance, Attachment LR200 Parametering.pdf (630 Downloads)

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4/29/2008 7:23 AM	Rate (1)
Chook Experienced Member Joined: 6/13/2006 Last visit: 9/21/2023 Posts: 201 Rating: (8)	simatic_user Dear Experts, i am very confused assign parameters to an LR200 (7ML54231GB000BB1) in an application of one tank with 3 meters with ice cream. Please see attached picture with distances and the escenary. My doubt is where locate my axis of reference (zero). Radar to low level point of tank or low level point to radar. I have tried of different ways y my true level is not equal to level indicated in the radar. Please, help me to find the following parameters based in attached picture. Low Calibration Point (m) High Calibration Point (m) Sensor Offset (m) Level Offset (m) Thanks in advance, Hello , You could be asking for the breakpoints . Here is a sample that would help to answer for your question . [IMG]http://i28.tinypic.com/2v0d4pk.jpg[/IMG] Regards c Attachment pic11.JPG (544 Downloads)
	[IMG]http://i17.tinypic.com/66b7jas.jpg[/IMG]
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4/29/2008 1:33 PM	Rate (1)
SonicRanger Posts: 151 Rating: (8)	Hi Simatic user, the answer is simple, I wish all customers could provide me such a clear drawing! You have to parametrize your device as follows: - high calibration point = 0,5 m - low calibration point = 2,868 m to get a valid measurement at low levels, please increase your range extension (in profibus units is this called "far range". I would advise to set the far range to 4,5 m, to be sure that the measurement covers the whole tank. A conical bottom can cause an indirect echo, which has to be seen for a reliable empty reading. If you don't like to see negative readings, use the volume calculation parameters for that. Please leave the sensor offset and level offset at 0 m, the biggest mistake you could make is to enter a value here!!! Another very important issue: pay attention to the mounting rules: If a standpipe is used, the active part of the antenna must be OUTSIDE of it!!! If you have problems with the reading, please provide the dimensions of the standpipe. Good luck, SonicRanger.
SonicRanger Posts: 151 Rating: (8)
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