Model #ES12781ISSUE1

Electrical frequency meter (NSN 6625-00-239-7405)

Special Features
Tropicalized

Mounting Hole Diameter

0.125 inches

Overall Diameter

3.250 inches

Mounting Bolt Circle Diameter

1.438 inches

Indicator Type

Dial w/pointer

Installation Design

Panel

Mounting Arrangement Style

Three hole/stud bolt circle

Frequency Response Range

+59.000/+61.000 hertz

Frequency Response Range

+59.000 to 61.000 hertz

Resonant Reed Quantity

Accuracy In Percent

-2.0/+2.0 at full scale single indicator single range

Accuracy In Percent

-2.0 to 2.0 at full scale single indicator single range

Meter Depth Behind Mounting Flange

2.562 inches

Meter Body Diameter Behind Mounting Flange

2.344 inches

Movement Type

Vibrating reed

Power Source

External

Mounting Facility Type And Quantity

3 unthreaded hole

Measurement Range

+59.0/+61.0 hertz single indicator single range

Measurement Range

+59.0 to 61.0 hertz single indicator single range

Features Provided

Zero adjuster

Circuit Attachment Method And Quantity

2 threaded stud

Special Markings

3600 rpm slow fast above scale; motor speed below scale

Nuclear Hardness Critical Feature

Nonhardened

Style Designator

Round flush mtg

Fsc Application Data

Test set, elect. Equip.

Description

Meter,electrical Frequency

Cage Code

88818

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