Model: 121-18

Voltmeter

Special Features:

Ruggedized

Properties:

Circuit Current For Which Designed
Dc
Dielectric Withstanding Voltage In Volts
1500.0
Overall Length
1.830 inches
Scale Division Quantity
20 single indicator 1st range
Scale Division Quantity
68 single indicator 2nd range
Mounting Stud Length
0.490 inches
Overall Diameter
4.580 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
Mounting Bolt Circle Diameter
4.075 inches
Furnished Items And Quantity
Nut 6; lockwasher 6; seal 1
Indicator Type
Dial w/pointer
Installation Design
Panel
Mounting Arrangement Style
Six hole/stud bolt circle
Sensitivity Rating
50.0 microamperes
Dial Scale Marking Color
Black single indicator all ranges
Accuracy In Percent
-1.0/+1.0 at full scale single indicator all ranges
Accuracy In Percent
-1.0 to 1.0 at full scale single indicator all ranges
Meter Depth Behind Mounting Flange
1.150 inches
Meter Body Diameter Behind Mounting Flange
3.570 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
6 threaded stud
Scale Graduation Type
Linear single indicator all ranges
Measurement Range
-10.0/+10.0 volts, root mean square single indicator 2nd range
Measurement Range
-3.0/+3.0 volts, root mean square single indicator 1st range
Measurement Range
-10.0 to 10.0 volts, root mean square single indicator 2nd range
Measurement Range
-3.0 to 3.0 volts, root mean square single indicator 1st range
Mounting Stud Diameter
0.138 inches
Scale Selection Method
Terminal
Features Provided
Zero adjuster
Movement Suspension Method
Jewel pivot base
Circuit Attachment Method And Quantity
2 screw and 2 solder lug and 1 turret
Special Markings
On back, g at top of third terminal
Material
Steel
Nuclear Hardness Critical Feature
Nonhardened
Surface Treatment
Paint
Style Designator
Round flush mtg
Fsc Application Data
Test set, elect. Equip.
NSN
6625-00-077-2733
Part Number
121-18
Description
Voltmeter
CAGE
15309

An instrument which measures electrical potential and is calibrated in volts 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.

Part 121-18 NSN 6625-00-077-2733

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16449
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

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:
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:
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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