Model: 2540-249

Null Meter

Special Features:

Ruggedized

Properties:

Circuit Current For Which Designed
Ac
Dielectric Withstanding Voltage In Volts
5000.0
Overall Length
2.515 inches
Overall Height
2.975 inches
Overall Width
4.526 inches
Mounting Stud Length
0.671 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
Distance Between Mounting Facility Centers
3.508 inches
Furnished Items And Quantity
Nut 4; lockwasher 4; seal 1
Indicator Type
Dial w/pointer
Installation Design
Panel
Mounting Arrangement Style
Two hole/stud
Sensitivity Rating
50.0 microamperes
Dial Scale Marking Color
Black 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
1.309 inches
Meter Body Diameter Behind Mounting Flange
2.185 inches
Movement Type
Moving coil, permanent magnet
Background Color
White single indicator single range
Pointer Color
Black single indicator single range
Scale Marking
Above readout; 0; below readout
Mounting Facility Type And Quantity
2 threaded stud
Scale Graduation Type
Nonlinear single indicator single range
Mounting Stud Diameter
0.138 inches
Features Provided
Nonglare glass and zero adjuster
Movement Suspension Method
Jewel pivot base
Circuit Attachment Method And Quantity
2 threaded stud
Material
Plastic
Nuclear Hardness Critical Feature
Nonhardened
Surface Treatment
Paint
Special Test Features
Complies with mil-m-10304
Style Designator
Rectangular flush mtg
Fsc Application Data
Test set, elect. Equip.
NSN
6625-00-497-2980
Part Number
2540-249
Description
Meter,null
CAGE
31943

An electrically operated instrument having a zero point on its scale (usually located in the center thereof). It may not indicate units of electrical measurement. The value may be expressed by means of a pointer and calibrated dial or a digital readout display. When the indication shows zero, an electrical value of "zero" has been reached in the circuit. It is generally used in situations in which zero is the desired effect. Excludes ammeter, galvanometer; meter, arbitary scale; and voltmeter.

Part 2540-249 NSN 6625-00-497-2980

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
61382
FIIG:
A310A0
Concept No.:
App. Key:
C
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

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:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

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:
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

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