Model: 637

Ammeter

Properties:

Circuit Current For Which Designed

Dielectric Withstanding Voltage In Volts

3000.0

Overall Length

2.060 inches

Scale Division Quantity

50 single indicator single range

Mounting Stud Length

0.500 inches

Overall Diameter

3.510 inches

Mounting Bolt Circle Diameter

3.160 inches

Furnished Items And Quantity

Mounting hardware 1 set

Indicator Type

Dial w/pointer

Installation Design

Panel

Mounting Arrangement Style

Three hole/stud bolt circle

Frequency Response Range

+360.000/+440.000 hertz

Dial Scale Marking Color

Black single indicator single range

Accuracy In Percent

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

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

Mounting Facility Type And Quantity

4 threaded stud

Scale Graduation Type

Linear single indicator single range

Measurement Range

+0.0/+100.0 amperes, ac single indicator single range

Mounting Stud Diameter

0.138 inches

Features Provided

Magnetic shield

Movement Suspension Method

Jewel pivot base

Circuit Attachment Method And Quantity

2 binding post

Nuclear Hardness Critical Feature

Nonhardened

Surface Treatment

Enamel

Style Designator

Round flush mtg

Test Data Document

81349-mil-m-10304 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).

Specification Data

81349-mil-m-10304/14 government specification

Fsc Application Data

Test set, electronic equipment

NSN

6625-00-683-9423

Part Number

637

Description

Ammeter

CAGE

77221

An instrument which measures electric current and is calibrated and marked in amperes 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. For current detecting type of devices, see galvanometer.

Part 637 NSN 6625-00-683-9423

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16450

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:

0.9000lbs

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