Technical Specifications for 6 0 0 Ser i e s I n s t r u m e n t G r a d e El e c t r o s t a t i c T r a n s d u c er s P a r t 6 1 6 3 4 1 M i n i m u m o r d e r 1 0 In c r e m e n t s o f 1 0 P a r t 6 0 4 1 4 2 M i n i m u m or d e r 10 0 in c r e m e n t s o f 10 0 Th i s I n s t r u m e n t Gr a d e e l e c t r o s t a t i c t r a n s d u c e r is s p e c i f i c a l l y i n t e n d e d f o r o p e r a t i o n i n a i r a t u l t r a s o n i c f r e q u e n c i e s Th e a s s e m b l y c o m e s c o m p l e t e wi t h a p e r f o r a t e d protect ive cover Specifi cations Usable Transmitting Frequency Range See Graph Maximum Combined Voltage 400V Usable Receiving Frequency Range See Graph Capacitance at 1 kHz Typical 400 500 pf Beam Pattern See Graph 150 vdc bias Minimum Transmitting Sensitivity at 50 kHz 110 dB Operating Conditions 300 vacpk pk 150 vdc bias Temperature dB re 20 Pa at 1 meter Relative Humidity Minimum Receiving Sensitivity at 50 kHz 42dB Standard Finish kHz150 vdc bias dB re lv Pa Foil 20 160 F 5 95 Gold Housing Suggested DC Bias Voltage 150V Flat Black Suggested AC Driving Voltage peak 150V Cold Roll Steel S p e c i f i c a t i o n s su b j e c t t o c h a n g e w i t h o u t n o t i c e Technical Specifications for 6 0 0 Ser i e s E n v i r o n m e n t a l G r a d e E l e c t r o s t a t i c T r a n s d u c er s P a r t 6 1 6 3 4 1 2 M i n i m u m o r d e r 1 0 In c r e m e n t s o f 1 0 P a r t 6 0 7 2 8 1 M i n i m u m or d e r 10 0 in c r e m e n t s o f 10 0 The Environmental Grade transducer is identical in physical size electrical characteristics and acoustical performance to the Instrument Grade transducer The only difference is that the outer housing is made of a 304 stainless steel which makes this transducer better suited for a harsh outdoor environment E N V I R O N M E N T A L CH A R A C T E R I S T I C S E X P O S U R E E N V I R O N M E N T A L CH A R A C T E R I S T I C S E X P O S U R E T h e f o l l o w i n g t e s t s we r e p e r f o r m e d wi t h t h e t r a n s d u c e r h o u s e d i n t h e P o l a r o i d T e s t E nclosu re T h e T e s t En c l o s u r e p r o t e c t s t h e si d e s a n d b a c k o f t h e t r a n s d u c e r f r o m e x p o s u r e t o a n y f o r e i g n m a t t e r T h e re a r o f t h e t r a n s d u c e r i s v e n t e d t o a t m o s p h e r i c p r e s s u r e O u t p u t a n d se n s i t i v i t y o f t h e t r a n s d u c e r a r e re d u c e d sl i g h t l y wh e n u s e d i n t h i s e n c l o s u r e A f t e r e a c h t e s t t r a n s d u c e r s we r e cl e a n e d a n d dr i e d i f ne c e s s a r y M e a s u r e m e n t s we r e t h e n t a k e n at r o o m t e m p e r a t u r e V a r i a t i o n i n c o m b i n e d t r a n s m i t r e c e i v e se n s i t i v i t y a t 5 0 k H z w a s n o m o r e t h a n 4 5 d B a f t e r a n y on e of th e f o l l o w i n g te s t s S t o r a g e T e m p e r a t u r e Ra n g e 4 0 F t o 2 5 0 F 4 0 C t o 1 2 0 C S a l t S p r a y E x p o s u r e 9 6 h o u r s 5 sa l t sp r a y so l u t i o n a t 9 5 F 3 5 C S h o c k a n d Vi b r a t …
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