Model: 4220

Audio Level Calibrator

Special Features:

Provides stable 124 db (porm 0, 2 db) 20 upa sound level at 250 hz; battery operated by 6 x iec lr6 batteries; temperature range: m40.0/p60.0 deg. C for pistonphone, 0.0/p60.0 deg. C for batteries; portable

Properties:

Overall Length
9.000 inches
Overall Diameter
1.400 inches
Indicator Type
Numbered dial
Unpackaged Unit Weight
1.500 pounds
Calibration Accuracy Rating
Porm 0, 15 db
Functional Description
Sound source for calibration of sound level meters using 1/8, 1/4, 1/2 and 1 in. Microphones
NSN
6625-01-011-8836
Part Number
4220
Description
Calibrator,audio Level
CAGE
27591

An item that, when used with an associated audio frequency signal generator, determines by comparison the output level of an audio frequency voltage. The meter is marked in volts or submultiples thereof. For items utilizing a meter the scale of which is marked in decibels or comparable units, and which do not require a driving oscillator, see meter, audio level. See also meter, modulation and meter, s-units.

Part 4220 NSN 6625-01-011-8836

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
21986
FIIG:
T263-B
Concept No.:
App. Key:
BC
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:
U
ESD:
A
ESD:
A
MMAC:
RH
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061700
UFC:
34580
LTL:
RATING VARIABLE
LCL:
77.5
WCC:
738
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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