Model: 639

Voltmeter

Special Features:

Ruggedized

Properties:

Circuit Current For Which Designed

Dielectric Withstanding Voltage In Volts

3000.0

Overall Length

2.850 inches

Mounting Hole Diameter

Between 0.143 inches and 0.157 inches

Overall Diameter

3.510 inches

Environmental Protection

Cold resistant and heat resistant and shock resistant and vibration resistant

Mounting Bolt Circle Diameter

3.160 inches

Furnished Items And Quantity

Mtg hdw 3; term. Hdw 2

Indicator Type

Dial w/pointer

Installation Design

Panel

Mounting Arrangement Style

Three hole/stud bolt circle

Frequency Response Range

+360.000/+440.000 hertz

Frequency Response Range

+360.000 to 440.000 hertz

Dial Scale Marking Color

Black single indicator single range

Accuracy In Percent

-2.5/+2.5 at full scale single indicator single range

Accuracy In Percent

-2.5 to 2.5 at full scale single indicator single range

Unable To Decode

Unable to decode or unable to decode

Meter Depth Behind Mounting Flange

1.660 inches

Meter Body Diameter Behind Mounting Flange

2.800 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

3 screw and 3 unthreaded hole

Scale Graduation Type

Nonlinear single indicator single range

Measurement Range

+0.0/+500.0 volts, af single indicator single range

Measurement Range

+0.0 to 500.0 volts, af single indicator single range

Features Provided

Zero adjuster

Movement Suspension Method

Taut band

Circuit Attachment Method And Quantity

2 solder lug and 2 threaded stud

Operating Voltage Rating In Volts

Between 120.0 ac and 225.0 ac

Special Markings

Red line at 120, 208, 240 and 416 volts

Material

Stainless steel

Nuclear Hardness Critical Feature

Nonhardened

Surface Treatment

Enamel semigloss

Special Test Features

Conforms to mil-m-10304/13

Style Designator

Round flush mtg

Supplementary Features

Within the ranges of 115 to 125 volts and 200 to 250 volts the percent of error shall not be more than 5 volts and 10 volts respectively

Fsc Application Data

Test set, elect. Equip.

NSN

6625-00-489-6409

Part Number

639

Description

Voltmeter

CAGE

77221

An instrument which measures electrical potential and is calibrated in volts or any multiple and/or submultiple thereof. The value may be expressed by means of a pointer and calibrated dial or a digital readout display.

Part 639 NSN 6625-00-489-6409

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16449

FIIG:

A310A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

1.1000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

136740

UFC:

68820

LTL:

RATING VARIABLE

LCL:

WCC:

657

TCC:

SHC:

ACC:

Instruments/Radio

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Schedule B and Export

Schedule B: 9030908030
SITC: 87479
End Use: Measuring, testing, control instruments
NAICS: 334515
USDA: 1

Freight Class: Parts and accessories of articles of schedule b subheading 9030.39