Model: 481-961

Audio Level Meter

Special Features:

Ruggedized

Properties:

Circuit Current For Which Designed
Dc
Reliability Indicator
Not established
Overall Length
2.094 inches
Mounting Hole Diameter
Between 0.153 inches and 0.157 inches
Scale Division Quantity
4 single indicator single range
Overall Diameter
4.500 inches
Environmental Protection
Shock resistant and vibration resistant
Mounting Bolt Circle Diameter
Between 4.114 inches and 4.134 inches
Indicator Type
Dial w/pointer
Installation Design
Panel
Mounting Arrangement Style
Six hole/stud bolt circle
Dial Scale Marking Color
Black single indicator single range and red single indicator single range
Accuracy In Percent
-1.5/+1.5 at full scale single indicator single range
Unable To Decode
Unable to decode or unable to decode
Meter Depth Behind Mounting Flange
1.500 inches
Meter Body Diameter Behind Mounting Flange
3.500 inches
Movement Type
Moving coil, permanent magnet
Background Color
White single indicator single range
Pointer Color
Black single indicator single range
Mounting Facility Type And Quantity
1 flange and 6 unthreaded hole
Scale Graduation Type
Linear single indicator single range
Measurement Range
+120.0/+140.0 decibels single indicator single range
Features Provided
Knife edge pointer
Movement Suspension Method
Jewel pivot base
Circuit Attachment Method And Quantity
2 solder lug
Functional Description
Used to measure sound levels
Special Markings
Red line at 130 db; source level db/lub written above the scale; noise level set to red line written below the scale
Material
Steel
Nuclear Hardness Critical Feature
Nonhardened
Special Test Features
Iaw mil-m-10304
Style Designator
Round flush mtg
Fsc Application Data
Test set, elect. Equip.
NSN
6625-00-856-2938
Part Number
481-961
Description
Meter,audio Level
CAGE
28569

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 481-961 NSN 6625-00-856-2938

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16456
FIIG:
A310A0
Concept No.:
App. Key:
A
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
136740
UFC:
68820
LTL:
RATING VARIABLE
LCL:
--
WCC:
657
TCC:
Z
SHC:
9
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

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