Model #MK777-288

Electrical frequency meter (NSN 6625-00-538-9047)

Special Features
Reeds have high q characteristics; hermetically sealed; 100 to 130 operating voltage
Description

2.625 inches nominal overall length, plastic phenol-formaldehyde material, enamel surface treatment.

Circuit Current For Which Designed
Ac
Dielectric Withstanding Voltage In Volts
1000.0
Mounting Hole Diameter
0.125 inches
Overall Diameter
2.688 inches
Environmental Protection
Waterproof
Mounting Bolt Circle Diameter
2.440 inches
Furnished Items And Quantity
Mtg hdw 3; term. Hdw 2
Indicator Type
Vibrating reed
Installation Design
Panel
Register Quantity
1
Mounting Arrangement Style
Three hole/stud bolt circle
Dial Scale Marking Color
Black single indicator single range
Resonant Reed Quantity
5
Accuracy In Percent
-0.3/+0.3 at full scale single indicator single range
Accuracy In Percent
-0.3 to 0.3 at full scale single indicator single range
Unable To Decode
Unable to decode or unable to decode
Meter Depth Behind Mounting Flange
1.844 inches
Meter Body Diameter Behind Mounting Flange
2.125 inches
Movement Type
Vibrating reed
Background Color
White single indicator single range
Power Source
External
Mounting Facility Type And Quantity
3 unthreaded hole
Measurement Range
+380.0/+420.0 hertz single indicator single range
Measurement Range
+380.0 to 420.0 hertz single indicator single range
Circuit Attachment Method And Quantity
2 threaded stud
Nuclear Hardness Critical Feature
Nonhardened
Style Designator
Round flush mtg
Supplementary Features
Temperature compensations not required
Fsc Application Data
Test set, elect. Equip.
Description
Meter,electrical Frequency
Cage Code
0BZM1

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Updated: 11/22/2024