Model #4891-010

Electrical frequency meter (NSN 6625-00-556-4936)

Special Features
Requires transducer
Description

6.250 inches nominal overall length.

Circuit Current For Which Designed
Ac
Center To Center Distance Between Mounting Facilities Parallel To Length
3.376 inches
Center To Center Distance Between Mounting Facilities Parallel To Width
3.376 inches
Overall Height
4.422 inches
Overall Width
4.422 inches
Mounting Hole Diameter
0.312 inches
Scale Division Quantity
100 single indicator single range
Frequency Rating
60.0 hertz
Environmental Protection
Humidity resistant and shock resistant and vibration resistant
Furnished Items And Quantity
Term. Hdw 2; transducer 1
Indicator Type
Dial w/pointer
Installation Design
Panel
Mounting Arrangement Style
Four hole/stud rectangular/square
Frequency Response Range
+55.000 to 65.000 hertz
Dial Scale Marking Color
Black single indicator single range
Accuracy In Percent
-2.0 to 2.0 at full scale single indicator single range
Meter Depth Behind Mounting Flange
2.688 inches
Meter Body Diameter Behind Mounting Flange
3.938 inches
Movement Type
Moving iron vane
Background Color
White single indicator single range
Pointer Color
Black single indicator single range
Power Source
External
Mounting Facility Type And Quantity
4 screw and 4 unthreaded hole
Scale Graduation Type
Linear single indicator single range
Measurement Range
+55.0 to 65.0 hertz single indicator single range
Features Provided
Zero adjuster
Movement Suspension Method
Taut band
Circuit Attachment Method And Quantity
2 threaded stud
Operating Voltage Rating In Volts
120.0 ac
Phase
Single
Style Designator
Rectangular flush mtg
Fsc Application Data
Test set, elect. Equip.
Description
Meter,electrical Frequency
Cage Code
15309

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Updated: 11/22/2024