thread and flange for guide radar level meter

one client ask me installation difference for thread and flange for CX-RLM-071, 
1) CX-RLM-071 is guide type radar level meter , 
2)it must be installed by flange ,just pls click the photo, you will know it clearly.

Shanghai Cixi Instrument Co. Ltd

Tel: (86)21-57632436 
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sales15@gninstruments.com 
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www.gnflowmeter.com 
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Songjiang District, Shanghai,China,Zip:201615