ng:
Shielding:
Response Time:
Overload (1 sec.):
Overload
(Continuous):
Repeatability:
Dial:
Case:
Resistance:
Operating
Temperature:
Pointer:
Scale Length:
Net Weight:
AC: ±3% full scale (F.S.)
DC: ±2% full scale (F.S.)
AC: Rectifier type, DC: self-shielded, permanent
magnet
Pivot and jewel
±3%
Calibration is unaffected by magnetic panel mounting.
1.5 seconds maximum
10 times F.S.
1.5 times F.S.
2%
Sharp clear scale. Each dial arc is calibrated to track
the specific type of movement used.
Models 2523, 2524, 2543 & 2544: Metal
Models 2123L, 2143L: Black plastic
±15% of meter impedance
-4°F to +149°F (-20°C to +65°C)
Red, knife-edge
Models 2123L, 2523, 2543 & 2143L: 4.77" (121.16mm)
Models 2524, 2544: 6.54" (166.0mm)
Models Model 2523, 2123L, 2543 & 2143L: 8oz (230g)
Models 2524, 2524, 2544: 9oz (260g)
Specifications
Dimensions
3 - 1/2-Model 2123L, 2143L
Square Style
3 - 1/2-Model 2543, 2523
Round Style
4 - 1/2-Model 2524, 2544
Round Style
.51
.67
.3.00
2.69
DIA.
.53
.3.00
.70
.70
2.25
1.125
1.125
2.25
2.82
DIA.
(4) #4-40 MTG. STUDS
MTG. HOLES - .140 DIA DRILL THRU
(1) #1/4-28 STUDS
1.75
1
=
Panel Meter Cut-out Dimensions
For more information, visit www.simpsonelectric.com

Ordering Information
Percent M
Motor LLoad M
Meters
, Self-Shielding Movement
*
Internal transformer burden
** Dial reads 0-150% Motor Load Current
< > Available on special order
Model/Size and Catalog Number
Approx. Impedance
3-1/2
3-1/2
4-1/2
Range
(Ohms) @ 60Hz
Model 2543
Model 2143L
Model 2544
0-5 ACA
< >
17918
< >
Motor Load
0.5VA Maximum*
< >
17919
< >
Current**
AC V
Voltmeters R
Rectifier TType,
Self-Shielding Movement
< > Available on special order.
Model/Size and Catalog Number
Approx. Impedance
3-1/2
3-1/2
4-1/2
Range
(Ohms) @ 60Hz
Model 2543
Model 2143L
Model 2544
0-10
17990
< >
17995
0-30
< >
17915
< >
0-150
17978
17916
17988
0-300
17979
17917
17989
2000 /V
DC M
Microammeters,
Self-Shielding Movement
Model/Size and Catalog Number
Approx. Impedance
3-1/2
3-1/2
4-1/2
Range
(Ohms)
Model 2523
Model 2123L
Model 2524
0-50
8000
17970
17910
17980
0-100
4200
17971
17911
17981
0-500
340
17972
17912
17982
DC M
Milliammeters,
Self-Shielding Movement
Model/Size and Catalog Number
Approx. Impedance
3-1/2
3-1/2
4-1/2
Range
(Ohms)
Model 2523
Model 2123L
Model 2524
0-1
135.0
17973
17913
17983
0-10
10.0
17974
< >
17984
0-500
0.2
17975
< >
17985
1-0-1
50.0
17996
< >
17997
DC A
Ammeter,
Self-Shielding Movement
Model/Size and Catalog Number
Approx. Impedance
3-1/2
3-1/2
4-1/2
Range
(Ohms)
Model 2523
Model 2123L
Model 2524
0-10
.005
35098
< >
35099
< > Available on special order.
Meters are supplied as 50 millivolt, and requires an external shunt #06704
< > Available on special order.
DC M
Millivoltmeters,
Self-Shielding Movement
Range
Approx.
Impedance
(Ohms @ 60 Hz.)
0-50
10
17977
17914
17987
Model/Size and Catalog Number
3-1/2
Model 2523
3-1/2
Model 2123L
4-1/2
Model 2524
For more information, visit www.simpsonelectric.com