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    Simpson 250° Long Scale Meters
                  
   3½",  4½", Models 2523,2524,         3½",  Models 2123L, 2143L
        2543, 2544 Round Style                 Same Dimension as 3½"
             (Sealed Cases)                              Century Series

                Specifications and Data PDF Document

     Designed for applications that reqire high-resolution
readings, Simpson 250° panel meters provide more
than double the scale length of the standard 90° or
100° movements.
     They are self-shielded, permanent magnet, moving
coil instruments with non-magnetic pivots and spring-
backed jewels.
     External front access zero adjust.
     Round metal cases with glass windows.
     Square phenolic cases with glass windows.

Specifications
Simpson 250° Long Scale Meters
{Red Pointer-Knife Edge)
Size DC
Round
Model		 DC
Square
Model		 AC
Round
Model		 AC
Square
Model		 Scale
Length 		Accuracy
3½ 2523 2123L 2543 2143L 4.77"
(121 mm) 		DC ± 2% FS
4½ 2524   2544   6.54"
(166 mm) 		AC ± 3% FS
250° Long Scale DC Ammeters
    3½"
MODEL
2523		 3½"
MODEL
2123L		 4½"
MODEL
2524
250° Meters
Range		 Approximate
Resistance
Ohms		 Catalog
Numbers		 Catalog
Numbers		 Catalog
Numbers

0-10

.005 Ohms

17976

(***)

17986
250° Long Scale DC Millivoltmeters

0-50

10 Ohms

17977

17914

17987
250° Long Scale DC Milliammeters

0-1

135 Ohms

17973

17913

17983

0-10

10 Ohms

17974

(***)

17984

0-500

.2 Ohms

17975

(***)

17985

1-0-1

50 Ohms

17996

(***)

17997
250° Long Scale DC Microammeters

0-50

8k Ohms

17970

17910

17980

0-100

4.2kk Ohms

17971

17911

17981

0-500

340 Ohms

17972

17912

17982
250° Long Scale AC Voltmeters
Rectifier Type
    3½"
MODEL
2543		 3½"
MODEL
2143L		 4½"
MODEL
2544
250° Meters
Range		 Approximate
Impedance		 Catalog
Numbers		 Catalog
Numbers		 Catalog
Numbers

0-10*

2000

17990

(***)

17995

0-30

Ohms

(***)

17915

(***)

0-150

Per

17978

17916

17988

0-300

Volt

17979

17917

17989
*The 0-10v AC rectifier type voltmeters above may be
used with current transformer Model 186 to provide
17 common AC ammeter ranges from 0-50 mA to 0-50 A.
250° Long Scale AC Ammeters

0-5

0.5 VA

(***)

17918

(***)

Motor Load

Maximum

(***)

17919

(***)

Current

**

 

 

 
*0-5 amp movement
** Internal transformer burden
(***) Available on Special Order

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