1/7/2011 5:33 PM | |
Posts: 14 Rating: (0) |
Hi, Thanks for that. I've tried it and it works. I used a treshold to limit the upper pressere to 50 Bar, (see attached). However, is there anything that can be done to get the resolution to 0.05? ie. 0.00; 0.05; 0.10 etc Or would I be better off, trying to source a 0-50 Bar (0-10v) sensor? Regards, Skip Attachment0-60 Bar.lsc.zip (490 Downloads) |
Last edited by: Skip at: 1/7/2011 5:35 PM |
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1/10/2011 11:20 PM | |
Joined: 1/5/2007 Last visit: 4/7/2023 Posts: 1690 Rating: (580)
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Hi Skip, hi Toeternietoe, sorry, but some facts told from Toeternietoe are not correct: The LOGO! give values 0 to 1000 fpr 0 to 10 V or 0 to 20 mA to a circuit. That means a resolution of 0,01 V or 0,02 mA. If you connect a sensor 4 to 20 mA (-> or 2 to 10 V) for a range 0 to 60 bar, you get only LOGO!-values from 200 to 1000. That give you only 800 different measure-dataand aresolution of 0,075 bar as maximum in that range! Because LOGO! can only calculate with integer values you must use al calculations with a factor of 100 (1000 is not possible in remember of the data-range) andset 2 digits after zero point in the block properties (to displaythe value as xx,nninside text-boxes). To geta resolution of 0,05 bar in the measure range from 0 to 50 bar you must usea sensor with a maximum range 0 to 50 bar witch give you 0 to 10 V or 0 to 20 mA as transmitter output! Best regards Perhaps helpful links: |
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