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  d e s c r i p t i o n e c h o t e l ? m o d e l 3 5 5 i s a t w o - w i r e , l o o p - p o w e r e d , n o n - c o n t a c t u l t r a s o n i c t r a n s m i t t e r t h a t p e r f o r m s l i q u i d l e v e l , v o l u m e , a n d o p e n c h a n n e l f l o w m e a s u r e m e n t . m o d e l 3 5 5 t r a n s m i t t e r s f e a t u r e a p o w e r f u l 6 0 k h z u l t r a s o n i c t r a n s d u c e r a n d a d v a n c e d d i g i t a l s i g n a l p r o c e s s i n g t o r e l i a b l y m e a s u r e o u t t o a 2 0 f e e t ( 6 m ) m a x i m u m r a n g e . t h e m o d e l 3 5 5 p r o v i d e s u n s u r p a s s e d e a s e o f c o n f i g u r a t i o n w i t h e i t h e r t h e m e n u - d r i v e n 4 - p u s h - b u t t o n , 2 - l i n e 1 6 - c h a r a c t e r d i s p l a y , h a r t ? d i g i t a l c o m m u n i c a t i o n s , o r p a c t w a r e ? . t h i s e n a b l e s a c o m p l e t e c o n f i g u r a t i o n t o b e p e r f o r m e d v i a t h e l o c a l u s e r i n t e r f a c e , o r r e m o t e l y w i t h t h e e x t r a c a p a b i l i t y o f c a p t u r i n g e c h o w a v e f o r m s , a n d v i e w i n g t r e n d d a t a , d i a g n o s t i c c o n d i t i o n s , a n d a l l t r a n s m i t t e r c o n f i g u r a t i o n p a r a m e t e r s . t h e i n t e g r a l m o u n t e l e c t r o n i c s a r e h o u s e d i n e i t h e r a c a s t a l u m i n u m h o u s i n g o r l e x a n ? t h e r m o p l a s t i c h o u s i n g . t h e i n t e l l i g e n t e l e c t r o n i c s a n a l y z e t h e u l t r a s o n i c e c h o p r o f i l e , a p p l y t e m p e r a t u r e c o m p e n s a t i o n , r e j e c t e c h o e s f r o m f a l s e t a r g e t s , a n d t h e n p r o c e s s e s t h e t r u e e c h o f r o m t h e l i q u i d s u r f a c e . t h i s r e s u l t s i n a n e x t r e m e l y r e l i a b l e m e a s u r e m e n t e v e n w h e n a p p l i c a t i o n s d i f f i c u l t i e s l i k e t u r b u l e n c e a n d f a l s e e c h o e s e x i s t . t h e 6 0 k h z u l t r a s o n i c t r a n s d u c e r i s o f f e r e d i n p o l y p r o p y l e n e , o r k y n a r ? f l e x f o r s u p e r i o r p e r f o r m a n c e i n h a r s h e n v i r o n m e n t s . t h e s e p o w e r f u l t r a n s d u c e r s f e a t u r e a 1 0 c o n i c a l b e a m a n d 1 0 " ( 2 5 0 m m ) b l o c k i n g d i s t a n c e t o m a x i m i z e m e a s u r e m e n t c a p a b i l i t i e s i n a w i d e v a r i e t y o f a p p l i c a t i o n s . a p p l i c a t i o n s ? c h e m i c a l s t o r a g e t a n k s ? v e s s e l s w i t h h i g h l y v i s c o u s m e d i a ? p a i n t , i n k a n d s o l v e n t t a n k s ? i n d u s t r i a l w a s t e w a t e r p r o c e s s i n g ? v o l u m e i n b a t c h a n d d a y t a n k s ? o p e n c h a n n e l f l o w w e i r s a n d f l u m e s f e a t u r e s ? t w o - w i r e , l o o p - p o w e r e d t r a n s m i t t e r f o r l e v e l , v o l u m e a n d o p e n c h a n n e l f l o w m e a s u r e m e n t ? m a x i m u m r a n g e o f 2 0 f e e t ( 6 m e t e r s ) ? p a c t w a r e p c p r o g r a m u s i n g h a r t c o m m u n i c a t i o n s f o r r e m o t e c o n f i g u r a t i o n a n d t r o u b l e s h o o t i n g ? m e n u - d r i v e n 4 - p u s h - b u t t o n , 2 - l i n e 1 6 - c h a r a c t e r l c d u s e r i n t e r f a c e ? t e m p e r a t u r e c o m p e n s a t e d e c h o r e j e c t i o n p r o f i l e i d e n t i f i e s t r u e e c h o f r o m l i q u i d s u r f a c e ? t w o 7 - d i g i t f l o w t o t a l i z e r s , o n e r e s e t t a b l e , a n d o n e n o n - r e s e t t a b l e ? c o m m o n t a n k s h a p e s a n d 2 0 - p o i n t c u s t o m t a b l e f o r f a s t a n d a c c u r a t e v o l u m e c o n f i g u r a t i o n ? 6 0 k h z t r a n s d u c e r w i t h 1 0 b e a m a n g l e a n d 1 0 " ( 2 5 0 m m ) b l o c k i n g d i s t a n c e ? d y n a m i c b a s e l i n e n o i s e c o m p e n s a t i o n p r o v i d e s r e l i a b l e p e r f o r m a n c e i n t h e p r e s e n c e o f e l e c t r o m a g n e t i c n o i s e ? g e n e r i c d i s c h a r g e f l o w e q u a t i o n a n d 5 3 f l u m e / w e i r p r i m a r y e l e m e n t s f o r o p e n c h a n n e l f l o w a p p l i c a t i o n s e c h o t e l ? m o d e l 3 5 5 n o n - c o n t a c t u l t r a s o n i c t w o - w i r e t r a n s m i t t e r f o r l e v e l , v o l u m e , o r o p e n c h a n n e l f l o w c a s t a l u m i n u m h o u s i n g w i t h k y n a r f l e x ? t r a n s d u c e r l e x a n ? h o u s i n g w i t h p o l y p r o p y l e n e t r a n s d u c e r
range blocking distance distance (measured) level (range - distance) model 355 f low parshall flume l e v e l / v o l u m e a p p l i c a t i o n o p e n c h a n n e l f l o w a p p l i c a t i o n t e c h n o l o g y n o n - c o n t a c t u l t r a s o n i c m e a s u r e m e n t i s o b t a i n e d b y e m i t - t i n g a n u l t r a s o n i c p u l s e f r o m t h e t r a n s d u c e r a n d m e a s u r i n g t h e t i m e r e q u i r e d f o r t h e e c h o t o r e f l e c t f r o m t h e l i q u i d s u r - f a c e a n d r e t u r n t o t h e t r a n s d u c e r . t h e m o d e l 3 5 5 m e a s u r e s t h e t i m e o f t h e r o u n d t r i p p u l s e , a n d c a l c u l a t e s t h e d i s t a n c e u s i n g t h e e q u a t i o n : d = d i s t a n c e t o t a r g e t v a = v e l o c i t y o f s o u n d t h r o u g h a i r ( 1 , 1 2 8 f t / s e c . ) t = t i m e f o r o n e r o u n d t r i p s o u n d p u l s e s i n c e t h e s p e e d o f s o u n d i s t e m p e r a t u r e d e p e n d e n t , t h e t r a n s d u c e r a l s o m e a s u r e s t h e t e m p e r a t u r e a t t h e t r a n s d u c e r t o p r o v i d e c o m p e n s a t i o n f o r c h a n g i n g a i r t e m p e r a t u r e s . l e v e l i s c o m p u t e d b y t h e 3 5 5 e l e c t r o n i c s u s i n g t h e m e a s u r e d d i s t a n c e a n d t h e c o n f i g u r a t i o n d a t a t h a t h a s b e e n e n t e r e d f o r t h e v e s s e l d i m e n s i o n s . b y i n p u t t i n g t h e t y p e a n d g e o m e t r y o f a v e s s e l , t h e e l e c - t r o n i c s c a n c a l c u l a t e t h e l i q u i d v o l u m e i n t h e v e s s e l . i n a s i m i l a r o p e r a t i o n , t h e m o d e l 3 5 5 c a n p e r f o r m o p e n c h a n - n e l f l o w m e a s u r e m e n t b y c o n v e r t i n g t h e l e v e l r e a d i n g i n t o u n i t s o f v o l u m e p e r t i m e . c o m m o n t a n k s h a p e s , f l u m e s a n d w e i r s a r e s t o r e d i n t h e 3 5 5 s o f t w a r e . a 2 0 - p o i n t c u s - t o m t a b l e i s a l s o a v a i l a b l e f o r u n u s u a l t a n k s o r p r i m a r y f l o w e l e m e n t s . d = v a t 2 p e r f o r m a n c e m o d e l 3 5 5 t r a n s m i t t e r s a r e h i g h p e r f o r m a n c e u n i t s t h a t f e a t u r e a p o w e r f u l 6 0 k h z t r a n s d u c e r , a n d a d v a n c e d d i g i t a l s i g n a l p r o c e s s i n g . t h e s e f e a t u r e s a l l o w t h e 3 5 5 t o a c c u r a t e l y t r a c k t h e l i q u i d l e v e l i n d i f f i c u l t a p p l i c a t i o n s i n v o l v i n g a g i t a t i o n a n d l i g h t f o a m . t h e n a r r o w 1 0 b e a m a n g l e , s h o w n o n t h e r i g h t , a l l o w s t h e 3 5 5 t o b e u s e d i n a p p l i c a t i o n s w h e r e o t h e r u n i t s w i t h w i d e r b e a m a n g l e s f a i l d u e t o f a l s e r e f l e c t i o n s f r o m o b s t r u c t i o n s i n t h e t a n k . b e a m r a d i u s ( r ) v s . d i s t a n c e r=5.2 inches 5 feet r=10.5 inches 10 feet r=15.7 inches 15 feet r=21.0 inches 20 feet r 2
m e a s u r e m e n t r a n g e c a l c u l a t i o n s u l t r a s o n i c n o n - c o n t a c t t r a n s m i t t e r s a r e t y p i c a l l y r a t e d f o r a m a x i m u m r a n g e i n i d e a l c o n d i t i o n s . e x p e r i e n c e h a s s h o w n t h a t t h e m a x i m u m r a n g e m u s t b e r e d u c e d f o r c e r t a i n f a c t o r s . a l t h o u g h t h e m a x i m u m r a n g e r a t i n g i s s o m e w h a t c o n s e r v a t i v e , e a c h a p p l i c a t i o n m u s t b e e v a l u a t e d f o r s p e c i f i c c o n d i t i o n s i n t h e t a n k . s e v e r a l a p p l i c a t i o n p a r a m e t e r s t h a t a f f e c t u l t r a s o n i c p e r f o r m a n c e a r e s h o w n i n t h e t a n k a t t h e r i g h t . e a c h o f t h e s e p a r a m e t e r s i s a s s i g n e d a p e r f o r m a n c e m u l t i p l i e r i n t h e c h a r t b e l o w . m u l t i p l y t h e m a x i m u m p o t e n t i a l r a n g e ( 2 0 f e e t ) o f t h e m o d e l 3 5 5 b y e a c h o f t h e a p p l i c a b l e p e r f o r m a n c e m u l t i p l i e r s t o c a l c u l a t e t h e m a x i m u m a l l o w a b l e r a n g e f o r t h e a p p l i c a t i o n . p e r f o r m a n c e o p e r a t i n g p a r a m e t e r c o n d i t i o n m u l t i p l i e r s u r f a c e a g i t a t i o n : s u r f a c e a g i t a t i o n o r w a v e s c a n d e g r a d e t h e p e r f o r m a n c e . m o d e r a t e a g i t a t i o n r e s u l t s i n o n l y s l i g h t d e g r a d a - t i o n o f p e r f o r m a n c e . t h e w o r s t c a s e i s w h e n t h e s u r f a c e i s a g o o d r e f l e c t o r , b u t i n t h e w r o n g d i r e c t i o n . v a p o r s a n d s t e a m : v a p o r s c a n c a u s e p r o b l e m s w h e n t h e l i q u i d p r o c e s s t e m p e r a t u r e i s w e l l a b o v e t h e t e m p e r a t u r e o f t h e a i r s p a c e . t h e g r e a t e r t h e d i f f e r e n c e , t h e m o r e e x p e c t e d v a p o r p r o b l e m s . t h e p r o b l e m s r e s u l t f r o m c o n d e n s a t i o n o r l a y e r i n g i n t h e s o u n d p a t h , b o t h o f w h i c h a t t e n u a t e t h e s o u n d s i g n a l , a n d d e g r a d e p e r f o r m a n c e . i f a v e n t i s u s e d , b e s u r e t h a t i t i s w e l l a w a y f r o m t h e t r a n s d u c e r . b e a m s p r e a d i n t e r f e r e n c e : i t i s r e c o m m e n d e d t h a t n o o b s t r u c t i o n s , s u c h a s l a d d e r r u n g s , f i l l p i p e s , s u p p o r t s t r u t s , e t c . , b e a l l o w e d w i t h i n t h e 1 0 u l t r a s o n i c b e a m . i f a n o b s t r u c t i o n i s u n a v o i d - a b l e , m a k e i t a s f a r a w a y a s p o s s i b l e f r o m t h e t r a n s d u c e r . i n t e r f e r e n c e f r o m a g i t a t o r b l a d e s i s o n l y a n i n t e r m i t t e n t i n t e r f e r e n c e t h a t u s u a l l y h a s l i t t l e e f f e c t o n p e r f o r m a n c e . a s p e c i a l s o f t w a r e a l g o - r i t h m c a n a l s o h e l p s u p p r e s s f a l s e e c h o e s f r o m a g i t a t o r b l a d e s t h a t a r e w i t h i n t h e b e a m a n g l e . f o a m : f o a m c a n a t t e n u a t e t h e u l t r a s o u n d a n d r e n d e r t h e s y s t e m i n o p e r a t i v e . i f p o s s i b l e , m o v i n g t h e t r a n s d u c e r t o a n a r e a i n t h e t a n k w h e r e t h e r e i s l e s s f o a m w i l l i m p r o v e t h e p e r f o r m a n c e . t h i c k , h e a v y - d e n s i t y f o a m s c a n s o m e t i m e s p r o d u c e a r e f l e c t i o n f r o m t h e t o p o f t h e f o a m . t h e m u l t i p l i e r s s h o w n a t r i g h t a r e g e n e r a l g u i d e l i n e s . f o r f u r t h e r a s s i s t a n c e c o n s u l t t h e f a c t o r y . s m o o t h , g l a s s - l i k e s u r f a c e . . . . . . . . . . . . . . . . . . . . . . 1 . 0 s l i g h t a g i t a t i o n , c h o p p i n e s s . . . . . . . . . . . . . . . . . . . . . 0 . 9 h e a v y a g i t a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 . 8 s l i g h t v o r t e x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 . 7 n o c o n d e n s a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . 0 l i t t l e c o n d e n s a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 . 9 m u c h c o n d e n s a t i o n / f o g g y a p p e a r a n c e . . . . . . . . . . . . 0 . 8 n o i n t e r f e r e n c e w i t h i n 5 h a l f b e a m a n g l e . . . . . . . . . . 1 . 0 a g i t a t o r a t s p e e d l e s s t h a n 6 0 r p m . . . . . . . . . . . . . . . 1 . 0 a g i t a t o r a t s p e e d g r e a t e r t h a n 6 0 r p m . . . c o n s u l t f a c t o r y i n t e r f e r e n c e o u t s i d e 2 , f a r f r o m t r a n s d u c e r ( i n b o t t o m t h i r d o f r a n g e ) . . . . . . . . . . . . . . 0 . 8 i n t e r f e r e n c e o u t s i d e 2 , n e a r t o t r a n s d u c e r ( i n t o p t h i r d o f r a n g e ) . . . . . . . . . . . . . . . . . 0 . 5 n o f o a m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . 0 l i g h t f r o t h , l e s s t h a n 0 . 2 5 " t h i c k . . . . . . . . . . . . . . . . . . 0 . 8 l i g h t f o a m , l e s s t h a n 0 . 5 " t h i c k . . . . . . . . . . . . . . . . . . 0 . 5 l i g h t f o a m , m o r e t h a n 1 " t h i c k . . . . . . . . . . . . . . . . . . . 0 . 1 e x a m p l e : a s l i g h t l y a g i t a t e d 1 2 - f o o t t a n k w i t h n o c o n d e n s a t i o n , n o i n t e r f e r e n c e , a n d a l i g h t f r o t h o n t h e s u r f a c e . m a x i m u m a l l o w a b l e r a n g e : 2 0 ' 0 . 9 1 . 0 1 . 0 0 . 8 = 1 4 . 4 f e e t s i n c e t h e m a x i m u m a l l o w a b l e r a n g e i s 1 4 . 4 f e e t , t h e 3 5 5 i s s u i t a b l e f o r t h i s 1 2 - f o o t t a n k . beam spread i nterference b eam spread i nterference v a p o r s f oam surface a gitation n o t e : t h e m u l t i p l i e r s s h o w n a b o v e a r e g e n e r a l g u i d e l i n e s . f o r f u r t h e r a s s i s t a n c e c o n s u l t t h e f a c t o r y . 3
e x t e n s i v e s e l e c t i o n o f p r i m a r y f l o w e l e m e n t s w i t h a t o t a l o f 5 3 f l u m e a n d w e i r c u r v e s s t o r e d i n t h e e l e c t r o n i c s , i t w o u l d b e h a r d t o f i n d a n o p e n c h a n n e l f l o w a p p l i c a t i o n t h a t c a n n o t b e h a n d l e d b y t h e 3 5 5 t r a n s m i t t e r . u n u s u a l f l o w a p p l i c a t i o n s c a n r e a d i l y b e a c c o m p l i s h e d t h r o u g h t h e u s e o f e i t h e r t h e 2 0 - p o i n t c u s t o m t a b l e o r t h e g e n e r i c d i s c h a r g e f l o w e q u a t i o n w h i c h a l l o w s a d i r e c t e n t r y o f u n i q u e f l o w e q u a t i o n s . d u a l f l o w t o t a l i z e r s t w o 7 - d i g i t f l o w t o t a l i z e r s a r e p r o v i d e d f o r r e c o r d i n g f l o w i n c u b i c f e e t , g a l l o n s , m i l l i o n g a l l o n s , l i t e r s , m i l l i o n l i t e r s , o r c u b i c m e t e r s . o n e t o t a l i z e r i s r e s e t t a b l e a n d t h e o t h e r i s n o n - r e s e t t a b l e . s e v e r a l m u l t i p l i e r s a r e s e l e c t a b l e t o a l l o w f o r p r o p e r s c a l i n g . t o t a l i z e r t i m e i s a l s o r e c o r d e d t o s h o w h o w l o n g e a c h t o t a l i z e r h a s b e e n r e c o r d i n g f l o w . s t o r e d t a n k s h a p e s f o r v o l u m e v o l u m e c o n f i g u r a t i o n w i t h t h e 3 5 5 i s a s e a s y a s s e l e c t i n g t h e t a n k s h a p e a n d i n p u t t i n g 1 C 3 d i m e n s i o n s . w h i l e a 2 0 - p o i n t c u s t o m t a b l e i s a l s o a v a i l a b l e , s e l e c t i n g t h e a c t u a l t a n k s h a p e p r o v i d e s f o r a f a s t a n d a c c u r a t e c o n f i g u r a t i o n f o r a v a r i e t y o f c o m m o n t a n k s s h a p e s . l e v e l & v o l u m e a p p l i c a t i o n s o p e n c h a n n e l f l o w a p p l i c a t i o n s model 355 flow parshall flume t e m p e r a t u r e c o m p e n s a t e d e c h o r e j e c t i o n u l t r a s o n i c t r a n s m i t t e r s u s e t e m p e r a t u r e c o m p e n s a t i o n t o a d j u s t f o r s p e e d - o f - s o u n d c h a n g e s t h r o u g h o u t t h e o p e r a t i n g t e m p e r a t u r e r a n g e o f t h e t r a n s d u c e r ; h o w e v e r , m o s t t r a n s m i t t e r s d o n o t a p p l y t h i s c o m p e n s a t i o n t o t h e i r f a l s e t a r g e t r e j e c t i o n s c h e m e . t h i s c a n r e s u l t i n u n r e l i a b l e l e v e l m e a s u r e m e n t w h e n t h e t e m p e r a t u r e i n s i d e t h e t a n k c h a n g e s , a n d t h e e c h o r e j e c t i o n p r o f i l e c o n t r a c t s o r e x p a n d s . t h e m o d e l 3 5 5 h a s a p a t e n t - p e n d i n g e c h o r e j e c t i o n t e c h n i q u e t h a t c o n s t a n t l y a d j u s t s t h e r e j e c t e d e c h o p r o f i l e b a s e d o n t h e c u r r e n t s o u n d p r o p a g a t i o n v e l o c i t y . t h i s t e c h n i q u e k e e p s t h e t r a n s m i t t e r t r a c k i n g t h e a c t u a l l i q u i d l e v e l a s o p p o s e d t o f a l s e t a r g e t s e v e n w h e n t e m p e r a t u r e c h a n g e s a l t e r t h e s h a p e o f t h e e c h o r e j e c t i o n p r o f i l e . d y n a m i c b a s e l i n e n o i s e c o m p e n s a t i o n e l e c t r o m a g n e t i c a n d a c o u s t i c a l n o i s e c a n a d v e r s e l y a f f e c t i n s t r u m e n t a t i o n b y d e c r e a s i n g t h e s i g n a l - t o - n o i s e r a t i o , a n d d e g r a d i n g o v e r a l l m e a s u r e m e n t p e r f o r m a n c e . t h e m o d e l 3 5 5 c o n t i n u o u s l y m o n i t o r s f o r t h e p r e s e n c e o f e x c e s s i v e e l e c t r i c a l n o i s e . i f n o i s e l e v e l s a r e a b o v e a s e t l i m i t , t h e e l e c t r o n i c s w i l l d y n a m i c a l l y a d j u s t t h e b a s e l i n e t o c o m p e n s a t e f o r t h e e l e c t r i c a l i n t e r f e r e n c e . t h i s d y n a m i c b a s e l i n e a d j u s t m e n t e n a b l e s t h e 3 5 5 t o k e e p t r a c k i n g t h e p r o p e r e c h o e v e n i n t h e p r e s e n c e o f e x c e s s i v e e l e c t r i c a l n o i s e . t h e e c h o t e l m o d e l 3 5 5 t r a n s m i t t e r u t i l i z e s a n a d v a n c e d , p a t e n t - p e n d i n g s i g n a l p r o c e s s i n g t e c h n o l o g y t o p r o v i d e e x c e l l e n t p e r f o r m a n c e i n d i f f i c u l t p r o c e s s c o n d i t i o n s . d y n a m i c b a s e l i n e n o i s e c o m p e n s a t i o n , t e m p e r a t u r e c o m p e n s a t e d e c h o r e j e c t i o n , a n d e x t e n s i v e s e l f - d i a g n o s t i c s a l l c o m b i n e t o p r o v i d e e x t r e m e l y r e l i a b l e l e v e l a n d v o l u m e m e a s u r e m e n t . q = k ( l - c h ) h n 4
e l e c t r o n i c s s p e c i f i c a t i o n s s u p p l y v o l t a g e x p & g p 1 6 t o 3 6 v d c i s 1 6 t o 2 8 . 6 v d c i s e n t i t y p a r a m e t e r s f m / f m c v m a x = 2 8 . 6 v , i m a x = 1 4 0 m a p m a x = 1 . 0 w , c i = 5 . 5 n f , l i = 9 . 4 h a t e x u i = 2 8 . 4 v , l i = 9 4 m a , p i = 0 . 6 7 w c i = 5 . 5 n f , l i = 3 7 0 h p o w e r c o n s u m p t i o n l e s s t h a n 1 w a t t o u t p u t t y p e 4 C 2 0 m a w i t h o p t i o n a l h a r t d i g i t a l s i g n a l r a n g e 3 . 8 t o 2 0 . 5 m a u s e a b l e d i a g n o s t i c a l a r m s e l e c t a b l e f r o m 3 . 6 m a , 2 2 m a o r h o l d d a m p i n g a d j u s t a b l e f r o m 1 C 6 0 d i g i t a l c o m m u n i c a t i o n h a r t v e r s i o n 5 . x c o m p a t i b l e d i s p l a y 2 - l i n e x 1 6 - c h a r a c t e r l c d k e y p a d 4 - p u s h - b u t t o n m e n u - d r i v e n a m b i e n t t e m p e r a t u r e - 4 0 t o + 1 7 5 f ( - 4 0 t o + 8 0 c ) h o u s i n g m a t e r i a l c a s t a l u m i n u m o r l e x a n c a b l e e n t r y t w o ? " n p t o r m 2 0 e n t r i e s t r a n s d u c e r s p e c i f i c a t i o n s m a x i m u m r a n g e 2 0 f e e t ( 6 m e t e r s ) m i n i m u m r a n g e 1 3 i n c h e s ( 3 3 0 m m ) b l o c k i n g d i s t a n c e 1 0 i n c h e s ( 2 5 0 m m ) f r e q u e n c y 6 0 k h z p r o c e s s c o n n e c t i o n 2 " n p t p r o c e s s t e m p e r a t u r e - 4 0 o t o + 1 7 5 o f ( - 4 0 o t o + 8 0 o c ) p r o c e s s p r e s s u r e 0 t o 4 3 . 5 p s i g ( 0 t o 3 b a r ) m a t e r i a l k y n a r ? f l e x ( p v d f ) o r p o l y p r o p y l e n e b e a m a n g l e 1 0 o c o n i c a l p e r f o r m a n c e  s p e c i f i c a t i o n s a c c u r a c y g r e a t e r o f 0 . 2 % o f r a n g e o r 0 . 2 4 i n c h ( 6 m m ) r e p e a t a b i l i t y 0 . 1 2 5 i n c h ( 3 m m ) r e s o l u t i o n 0 . 1 i n c h ( 2 . 5 m m ) l i n e a r i t y 0 . 4 i n c h ( 1 0 m m ) r e s p o n s e t i m e l e s s t h a n 1 s e c o n d ( t y p i c a l ) w a r m - u p t i m e 3 0 s e c o n d s  p e r f o r m a n c e i s b a s e d o n a r e f e r e n c e o p e r a t i n g c o n d i t i o n o f a n a m b i e n t t e m p e r a t u r e o f + 6 0 o t o + 7 7 o f ( + 1 5 o t o + 2 5 o c ) , 4 5 t o 7 5 % r e l a t i v e h u m i d i t y , t r a n s d u c e r v e r t i c a l l y a l i g n e d o v e r a n i d e a l r e f l e c t i n g s u r f a c e , a n d n o f a l s e t a r g e t s w i t h i n t h e u l t r a s o n i c b e a m a n g l e . 5
a g e n c y a p p r o v a l s a g e n c y m o d e l p r o t e c t i o n m e t h o d a r e a c l a s s i f i c a t i o n 2.02 (51) 2.18 (52) m20 or 3 / 4 " npt conduit opening 2.48 ( 63) 1.50 (38) 2 " npt 1.90 (48) diameter 3.26 (83) 4 .06 (103) 3.99 (101) 2.48 (63) 1.50 (38) 2 " npt 1.90 (48) diameter 3.26 (83) 4.06 (103) d i m e n s i o n a l s p e c i f i c a t i o n s i n c h e s ( m m ) f m 3 5 5 - 5 x 0 a - 1 1 r i n t r i n s i c a l l y s a f e c l a s s i , d i v . 1 ; g r o u p s a , b , c , & d 3 5 5 - 5 x 0 a - 1 0 r t y p e 4 x , i p 6 6 , t 4 @ 8 0 c  e n t i t y 3 5 5 - 5 x 0 a - 1 x x i n t r i n s i c a l l y s a f e c l a s s i , d i v . 1 ; g r o u p s a , b , c , & d i p 6 7 , t 4 @ 8 0 c  e n t i t y 3 5 5 - 5 x 0 a - 1 x x n o n - i n c e n d i v e  c l a s s i , d i v . 2 ; g r o u p s a , b , c , & d i p 6 7 , t 4 @ 8 0 c  a t e x 3 5 5 - 5 x 0 a - a x x i n t r i n s i c a l l y s a f e a t e x i i 1 g e x i a i i c t 4 @ 7 0 c i s s e p 0 9 a t e x 0 1 3 x ( e n 6 0 0 7 9 - 0 , e n 6 0 0 7 9 - 1 1 & e n 6 0 0 7 9 - 2 6 s t a n d a r d s a p p l i e d ) 3 5 5 - 5 x 0 a - c 0 r e x p l o s i o n p r o o f a t e x i i 1 / 2 g e x m a / d i i c t 6 @ 7 0 c g a / g b 3 5 5 - 5 x 0 a - c 1 r i s s e p 0 9 a t e x 0 0 9 x  ( e n 6 0 0 7 9 - 0 , e n 6 0 0 7 9 - 1 , e n 6 0 0 7 9 - 1 8 & e n 6 0 0 7 9 - 2 6 s t a n d a r d s a p p l i e d ) c us these units have been tested to en 61326 and are in compliance with the emc directive 2004/108/ec.  m e a s u r e d m e d i a i n s i d e v e s s e l m u s t b e n o n - f l a m m a b l e o n l y .  p r o c e s s t e m p e r a t u r e m u s t n o t i n c r e a s e t h e i n t e r n a l t e m p e r a t u r e o f t h e e l e c t r o n i c s a b o v e + 1 7 6 f ( + 8 0 c ) .  t h e t r a n s m i t t e r s h o u l d b e i n s t a l l e d s u c h t h a t i n t h e e v e n t o f r a r e i n c i d e n t s , t h e a l u m i n u m e n c l o s u r e c a n n o t b e a n i g n i t i o n s o u r c e d u e t o i m p a c t o r f r i c t i o n , a n d t h a t e l e c t r o s t a t i c d i s c h a r g e s o n p l a s t i c p a r t s a r e p r e v e n t e d . c a s t a l u m i n u m h o u s i n g w i t h k y n a r ? o r p o l y p r o p y l e n e t r a n s d u c e r 2" npt m 2 0 o r 3 / 4 " n p t conduit opening 3.26 (83) 3.26 (83) 1.65 (42) 1.50 (38) 1.90 (48) dia m e t e r 3.78 (96) 2" npt 1.65 (42) 2.25 (57) 2.25 (57) 3.26 (83) 3.26 (83) 1.90 (48) dia m e t e r 1.50 (38) l e x a n ? h o u s i n g w i t h k y n a r o r p o l y p r o p y l e n e t r a n s d u c e r 6
a d i g i t a l d i s p l a y a n d k e y p a d m o d e l n u m b e r o u t p u t s i g n a l o p t i o n s i n p u t p o w e r t r a n s d u c e r a c c e s s o r i e s b a s i c m o d e l n u m b e r a g e n c y a p p r o v a l s h o u s i n g / c o n d u i t c o n n e c t i o n 355 50a 3 5 5 u l t r a s o n i c t r a n s m i t t e r f o r l e v e l , v o l u m e a n d o p e n c h a n n e l f l o w 5 2 4 v d c t w o - w i r e l o o p - p o w e r e d 04C 2 0 m a w i t h o u t h a r t ? 14C 2 0 m a w i t h h a r t 0 n o n e 1 f m / f m c i s & n o n - i n c e n d i v e a a t e x i s e e x i a c a t e x x p e e x d ( o n l y a v a i l a b l e w i t h h o u s i n g c o d e s 0 & 1 , a n d t r a n s d u c e r c o d e r ) 0 c a s t a l u m i n u m w i t h ? " n p t c o n d u i t c o n n e c t i o n s 1 c a s t a l u m i n u m w i t h m 2 0 c o n d u i t c o n n e c t i o n s 6 l e x a n ? p l a s t i c w i t h ? " n p t c o n d u i t c o n n e c t i o n s 7 l e x a n p l a s t i c w i t h m 2 0 c o n d u i t c o n n e c t i o n s b2 " n p t p o l y p r o p y l e n e r2 " n p t k y n a r ? f l e x q u i c k s h i p m e n t , u s u a l l y w i t h i n o n e w e e k a f t e r f a c t o r y r e c e i p t o f a c o m p l e t e p u r c h a s e o r d e r , t h r o u g h t h e e x p e d i t e s h i p p l a n ( e s p ) . 7
bulletin: 51-161.0 effective: may 2009 the quality assurance system in place at magnetrol guarantees the highest level of quality throughout the company. magnetrol is committed to providing full customer satisfaction both in quality products and quality service. the magnetrol quality assurance system is registered to iso 9001 affirming its com- mitment to known international quality stan- dards providing the strongest assurance of product/service quality available. all magnetrol electronic level and flow controls are warranted free of defects in materials or workmanship for one full year from the date of original factory shipment. if returned within the warranty period; and, upon factory inspection of the control, the cause of the claim is determined to be covered under the war- ranty; then, magnetrol will repair or replace the control at no cost to the purchaser (or owner) other than transportation. magnetrol shall not be liable for misapplication, labor claims, direct or consequential damage or expense arising from the installation or use of equipment. there are no other warranties expressed or implied, except special written warranties covering some magnetrol products. 5300 belmont road ? downers grove, illinois 60515-4499 ? 630-969-4000 ? fax 630-969-9489 ? www.magnetrol.com 145 jardin drive, units 1 & 2 ? concord, ontario canada l4k 1x7 ? 905-738-9600 ? fax 905-738-1306 heikensstraat 6 ? b 9240 zele, belgium ? 052 45.11.11 ? fax 052 45.09.93 regent business ctr., jubilee rd. ? burgess hill, sussex rh15 9tl u.k. ? 01444-871313 ? fax 01444-871317 copyright ? 2011 magnetrol international, incorporated. all rights reserved. printed in the usa. performance specifications are effective with date of issue and are subject to change without notice. q u a l i t y w a r r a n t y the echotel model 355 ultrasonic level transmitter is available for quick shipment, usually within one week after factory receipt of a complete purchase order, through the expedite ship plan (esp). models covered by esp service are con- veniently color coded in the selection data charts. to take advantage of esp, simply match the color coded model number codes (standard dimensions apply). esp service may not apply to orders of ten units or more. contact your local representa- tive for lead times on larger volume orders, as well as other products and options. e e xpedite s s hip p p lan e s p magnetrol & magnetrol logotype and echotel are registered trademarks of magnetrol international hart is a registered trademark of the hart communication foundation pactware is trademark of pactware consortium lexan is a registered trademark of savic innovative plastics kynar is a registered trademark of arkema, inc.


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