Model: 921

Ammeter

Special Features:

Linear scale and meter must withstand 10 times overload for 1 sec

Properties:

Circuit Current For Which Designed

Overall Length

6.690 inches

Center To Center Distance Between Mounting Facilities Parallel To Length

6.125 inches

Center To Center Distance Between Mounting Facilities Parallel To Width

6.375 inches

Overall Height

6.880 inches

Overall Width

6.630 inches

Scale Division Quantity

41 single indicator single range

Furnished Items And Quantity

Terminal studs nuts washers 4 and mtg screws nuts lockwashers 4 and lamps 2

Indicator Type

Dial w/pointer

Installation Design

Panel

Sensitivity Rating

1000.0 ohms per volt

Dial Scale Marking Color

Black single indicator single range

Accuracy In Percent

-1.0/+1.0 at full scale single indicator single range

Meter Depth Behind Mounting Flange

3.850 inches

Meter Body Diameter Behind Mounting Flange

6.000 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/+400.0 amperes, dc single indicator single range

Mounting Stud Diameter

0.164 inches

Features Provided

Magnetic shield and self-illumination facility

Circuit Attachment Method And Quantity

2 threaded stud

Special Markings

Caption amperes c.C center of dial below div scale and caption lp lp located on lh and rh of 2 top terminals on back and terminal lower left marked pos

Material

Steel

Nuclear Hardness Critical Feature

Nonhardened

Style Designator

Rectangular semi-flush mtg

Fsc Application Data

Test set, electronic equipment

NSN

6625-00-840-5692

Part Number

921

Description

Ammeter

CAGE

65092

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 921 NSN 6625-00-840-5692

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:

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:

Construction Materials

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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