Omega RD8800 User Manual page 136

A p p e n d i x B – C o n f i g u r i n g a 4 - 2 0 m A i n p u t t o e q u a l 0 t o 1 5 0 g p m
30
T h e p h o t o b e l o w s h o w s t h e p r o p e r c o n n e c t i v i t y f o r a 4 - 2 0 m A s i g n a l . T o r e d u c e a m b i e n t n o i s e , a
.
p r o p e r l y s h i e l d e d c a b l e s h o u l d b e u s e d . A 5 0 o h m p r e c i s i o n r e s i s t o r m u s t b e p l a c e d a c r o s s t h e +
a n d – t e r m i n a l s i n p a r a l l e l w i t h t h e i n p u t s i g n a l w i r e s . A l s o , a j u m p e r m u s t b e m a d e b e t w e e n t h e –
a n d C t e r m i n a l s ( r e f e r t o F i g u r e 2 - 7 i n C h a p t e r 2 ) .
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Attach cable
shield to
chassis
ground.
P a g e 7 o f 7
Place 50 ohm
resistor across
input + and –.
Link – and C
terminals.