Philips pm2521 Operating Manual page 37

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6.4.1.5. Alternating current measurements (A- rms)
G E N E R A L
T h e P M 2 5 2 1 m e a s u r e s t h e R M S v a l u e o f t h e A C i n p u t s i g n a l . A s t h e A C f u n c t i o n o f t h e P M 2 5 2 1 i s A C
c o u p l e d , a D C c o m p o n e n t i n t h e A C s i g n a l i s b l o c k e d . T h e D C c o m p o n e n t i s n o t i n c l u d e d i n t h e m e a s u r i n g
resu I t.
A L T E R N A T I N G C U R R E N T M E A S U R E M E N T S
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S e l e c t f u n c t i o n A - r m s w i t h t h e Í u n c t i o n s e l e c t o r .
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S e l e c t t h e m a n u a l o r a u t o m a t i c r a n g i n g m o d e w i t h p u s h b u t t o n A U T O / M A N - .
R e m a r k :
Manual ranging is indicated with a * on the display. In automatic ranging mode the UP level is2Q2O and the
D O W N l e v e l i s 0 1 8 0 .
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S e l e c t i n m a n u a l r a n g i n g m o d e t h e c o r r e c t r a n g e w i t h p u s h b u t t o n s U P o r D O W N .
R e m a r k :
Avaifabf e ranges are: mA terminal
O.2 A -2O A terminal
2.000 pA
200.0 mA
20.00 pA
2.000 A
200.0 uA 20.00 A
2.000 mA
20.00 mA
O v e r l o a d i s i n d i c a t e d w i t h O L o n t h e d i s p l a V ( D i s p l a y > 2 1 0 0 ) .
I n r a n g e 2 0 A o v e r l o a d i s a l s o i n d i c a t e d a t 2 1 . 0 0 A . H o w e v e r , t h e m a x i m u m c o n t i n u o u s i n p u t c u r r e n t i s 1 0 A .
l f t h e d i s p l a y i s ) 0 . 5 % o Í e n d o r r a n g e ( 1 0 d i g i t s ) , t h e d i s p l a y w i l l i n d i c a t e z e r o .
- C o n n e c t t h e c u r r e n t s o u r c e t o t h e 0 a n d m A o r O . 2 A - 2 0 A t e r m i n a l .
R e m a r k :
Currents up to 100 A can be measured with current transformer PM 9245. Refer to chapter 6.4.2.2.
Due to the measuring method, the display does not indicate zero when the input is short circuited.