Model #FMS4

Electrical frequency meter (NSN 6625-00-190-1655)

Description

4.300 inches nominal overall length.

Circuit Current For Which Designed
Ac
Dielectric Withstanding Voltage In Volts
2600.0
Mounting Hole Diameter
0.140 inches
Scale Division Quantity
50 single indicator single range
Overall Diameter
3.500 inches
Mounting Bolt Circle Diameter
3.180 inches
Furnished Items And Quantity
Term. Hdw 2
Indicator Type
Dial w/pointer
Installation Design
Panel
Mounting Arrangement Style
Three hole/stud bolt circle
Sensitivity Rating
50.0 microamperes
Dial Scale Marking Color
Black single indicator single range
Accuracy In Percent
-1.0/+1.0 at full scale single indicator single range
Accuracy In Percent
-1.0 to 1.0 at full scale single indicator single range
Meter Depth Behind Mounting Flange
3.475 inches
Meter Body Diameter Behind Mounting Flange
2.500 inches
Movement Type
Moving coil, permanent magnet
Background Color
White single indicator single range
Pointer Color
Black single indicator single range
Power Source
External
Mounting Facility Type And Quantity
3 unthreaded hole
Scale Graduation Type
Linear single indicator single range
Measurement Range
+375.0/+425.0 hertz single indicator single range
Measurement Range
+375.0 to 425.0 hertz single indicator single range
Scale Selection Method
Terminal
Features Provided
Zero adjuster
Movement Suspension Method
Jewel pivot base
Circuit Attachment Method And Quantity
2 threaded stud
Nuclear Hardness Critical Feature
Nonhardened
Style Designator
Round flush mtg
Fsc Application Data
Test set, elect. Equip.
Description
Meter,electrical Frequency
Cage Code
82227

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Updated: 11/23/2024