Model: 321

Voltmeter

Special Features:

Ruggedized

Properties:

Circuit Current For Which Designed

Dielectric Withstanding Voltage In Volts

2500.0

Overall Length

2.250 inches

Mounting Hole Diameter

0.125 inches

Scale Division Quantity

6 single indicator single range

Overall Diameter

2.687 inches

Environmental Protection

Airtight and dust resistant and fungus resistant and heat resistant and humidity resistant and shock resistant and vibration resistant and water resistant

Mounting Bolt Circle Diameter

2.440 inches

Furnished Items And Quantity

Nut 5; lockwasher 5; seal 1

Indicator Type

Dial w/pointer

Installation Design

Panel

Mounting Arrangement Style

Three hole/stud bolt circle

Sensitivity Rating

1.0 milliamperes

Dial Scale Marking Color

White single indicator single range

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

1.218 inches

Meter Body Diameter Behind Mounting Flange

2.062 inches

Movement Type

Moving coil, permanent magnet

Background Color

Black single indicator single range

Pointer Color

White single indicator single range

Power Source

External

Mounting Facility Type And Quantity

3 screw and 3 unthreaded hole

Scale Graduation Type

Linear single indicator single range

Measurement Range

+0.0/+250.0 volts, dc single indicator single range

Measurement Range

+0.0 to 250.0 volts, dc single indicator single range

Scale Selection Method

Terminal

Features Provided

Magnetic shield and zero adjuster

Movement Suspension Method

Jewel pivot base

Circuit Attachment Method And Quantity

2 threaded stud

Special Markings

On front top of scale, 1610; on back, sealed do not open

Material

Steel

Nuclear Hardness Critical Feature

Nonhardened

Surface Treatment

Cadmium and chromate

Special Test Features

Complies with mil-m-10304

Style Designator

Round flush mtg

Fsc Application Data

Test set, elect. Equip.

NSN

6625-00-643-0584

Part Number

321

Description

Voltmeter

CAGE

63300

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 321 NSN 6625-00-643-0584

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:

0.5000lbs

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