Model: 81T

Audio Level Meter

Special Features:

225 ohm resistance

Properties:

Circuit Current For Which Designed

Overall Length

1.355 inches

Overall Height

1.640 inches

Overall Width

1.980 inches

Mounting Stud Length

0.500 inches

Distance Between Mounting Facility Centers

1.250 inches

Indicator Type

Dial w/pointer

Installation Design

Panel

Mounting Arrangement Style

Two hole/stud

Sensitivity Rating

200.0 microamperes

Dial Scale Marking Color

Black single indicator all ranges and red single indicator all ranges

Accuracy In Percent

-2.0/+2.0 at full scale single indicator all ranges

Meter Depth Behind Mounting Flange

0.820 inches

Meter Body Diameter Behind Mounting Flange

1.100 inches

Movement Type

Moving coil, permanent magnet

Background Color

White single indicator all ranges

Pointer Color

Black single indicator all ranges

Power Source

External

Mounting Facility Type And Quantity

2 threaded stud

Scale Graduation Type

Nonlinear single indicator all ranges

Measurement Range

+0.0/+100.0 voice units single indicator 2nd range

Measurement Range

-20.0/+3.0 voice units single indicator 1st range

Mounting Stud Diameter

0.138 inches

Scale Selection Method

Terminal

Features Provided

Knife edge pointer and magnetic shield and zero adjuster

Movement Suspension Method

Taut band

Circuit Attachment Method And Quantity

2 solder lug

Material

Plastic

Nuclear Hardness Critical Feature

Nonhardened

Style Designator

Fan shape flush mtg

Fsc Application Data

Test set, elect. Equip.

NSN

6625-01-235-8765

Part Number

81T

Description

Meter,audio Level

CAGE

33005

An instrument which measures the ratio of electrical power with reference to a predetermined value and is calibrated in units of sound intensity, usually decibels. The value may be expressed by means of a pointer and calibrated dial or a digital readout display. if other than audio frequency ranges, see meter, noise level.

Part 81T NSN 6625-01-235-8765

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16456

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:

0.1000lbs

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