*Professional manufacturer of pressure transducer *More than 15 years experience *ISO9001, CMC, TUV CE *RoSH, CDNV7 ATEX Range0.5~10m Technical parameter same as PT400, especially designed for detecting liquid level resistant to acid & alkaline, Ceramic capacitive sensor, shell made of Teflon.NoteCM Patent No. 2L200620078309.3 CS-PT440/450 corrosive proof level transducer