Resistance Measurements (Standard Method); Resistance Measurement In Relative Reference Mode (Zero Set) - Philips pm2521 Operating Manual

40
6.4. | .6. Resistance measu rements (9 )
G E N E R A L
R e s i s t a n c e s c a n b e m e a s u r e d i n t w o w a v s v i z . :
-
R e s i s t a n c e s m e a s u r e m e n t s ( S t a n d a r d m e t h o d ) .
-
R e s i s t a n c e m e a s u r e m e n t s i n r e l a t i v e r e f e r e n c e m o d e .
T h e r e l a t i v e r e Í e r e n c e m o d e o f f e r s t h e p o s s i b i l i t y t o s e l e c t a p r e d e t e r m i n e d r e l a t i v e z e r o r e f e r e n c e l e v e l .
E a c h s u b s e q u e n t r e a d i n g w i l l i n d i c a t e t h e p o s i t i v e o r n e g a t i v e d e v i a t i o n Í r o m t h e r e l a t i v e r e f e r e n c e v a l u e .
E x a m p l e :
Measured resistance value is e.g. 1.2000 kS2. ln relative reference mode 1.2000 kQ will be displayed as
0 . 0 0 0 0 k S 2 . T h e s u b s e q u e n t m e a s u r e d r e s i s t a n c e v a l u e a r e e . g . 1 . 2 5 0 0 k Q a n d 1 . 1 5 0 0 k S 2 . T h e v a l u e d i s p l a y e d
will be respectively +0.0500 k,fl and -0.0500 kSI
R E S I S T A N C E M E A S U R E M E N T S ( S Ï A N D A R D M E T H O D }
-
S e l e c t Í u n c t i o n O w i t h t h e f u n c t i o n s e l e c t o r .
-
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 :
M a n u a l r a n g i n g i s i n d i c a t e d w i t h a * o n t h e d i s p l a y . I n a u t o m a t i c r a n g i n g m o d e t h e U P l e v e l i s 2 0 2 0 0 a n d t h e
D O W N l e v e l i s 0 1 8 0 0 .
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 :
A v a i l a b l e r a n g e s a r e : 2 0 0 . 0 0 S )
2.0000 ks2
20.000 kQ
200.00 kQ
2 . 0 0 0 0 M a
20.000 MQ
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 y ( D i s p l a y > 2 1 0 0 0 ) .
-
C o n n e c t t h e u n k n o w n r e s i s t a n c e t o t h e 0 a n d í ) t e r m i n a l .
Protection:
The input is protected up to 265 V rms.
R E S I S T A N C E M E A S U R E M E N T S I N R E L A T I V E R E F E R E N C E M O D E ( Z E R O S E T }
M e a s u r e t h e r e s i s t a n c e v a l u e a s d e s c r i b e d a b o v e .
-
D e p r e s s p u s h b u t t o n Z E R O S E T .
R e m a r k :
T h e d i s p l a y w i l l b e h e l d f o r o n e s e c o n d a n d a Z w i l l a p p e a r o n t h e r i g h t - h a n d s i d e o f t h e d i s p l a y . T h e v a l u e
which is on the display during this one second is the relative reÍerence value. After this one second the display
jumps to zero and the indication ZS will appear on the display. The PM 2521 has now been switched to the
r e l a t i v e r e f e r e n c e ( Z Ë R O S E T ) m o d e . E a c h s u b s e q u e n t r e a d i n g w i l l i n d i c a t e t h e p o s i t i v e o r n e g a t i v e d e v i a t i o n
from the relative reference value. The maximum readirrg is 40000.
f n the relative reÍerence mode the PM2521 switches to manual ranging *.
T o l e a v e t h e r e l a t i v e r e f e r e n c e m o d e , d e p r e s s p u s h b u t t o n Z E R O S E T a g a i n .