Model: MK777-270

Electrical Frequency Meter

Special Features:

Ruggedized

Properties:

Circuit Current For Which Designed
Ac
Dielectric Withstanding Voltage In Volts
800.0
Overall Length
2.968 inches
Mounting Hole Diameter
0.150 inches
Frequency Rating
Between 47.0 hertz and 63.0 hertz
Overall Diameter
3.500 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
3.160 inches
Furnished Items And Quantity
Nut 3; lockwasher 3; seal 1
Indicator Type
Vibrating reed
Installation Design
Panel
Register Quantity
2
Mounting Arrangement Style
Three hole/stud bolt circle
Sensitivity Rating
140.0 ohms per volt
Dial Scale Marking Color
Black single indicator all ranges
Resonant Reed Quantity
14
Accuracy In Percent
-3.0/+3.0 at full scale single indicator all ranges
Accuracy In Percent
-3.0 to 3.0 at full scale single indicator all ranges
Meter Depth Behind Mounting Flange
2.250 inches
Meter Body Diameter Behind Mounting Flange
2.687 inches
Movement Type
Vibrating reed
Background Color
White single indicator all ranges
Power Source
External
Mounting Facility Type And Quantity
3 screw and 3 unthreaded hole
Measurement Range
+47.0/+53.0 hertz single indicator 1st range
Measurement Range
+57.0/+63.0 hertz single indicator 2nd range
Measurement Range
+47.0 to 53.0 hertz single indicator 1st range
Measurement Range
+57.0 to 63.0 hertz single indicator 2nd range
Scale Selection Method
Terminal
Features Provided
Magnetic shield
Circuit Attachment Method And Quantity
2 eyelet
Operating Voltage Rating In Volts
Between 100.0 ac and 130.0 ac
Special Markings
On side, sealed do not open
Material
Steel
Nuclear Hardness Critical Feature
Nonhardened
Surface Treatment
Paint
Special Test Features
Complies with mil-m-10304
Style Designator
Round flush mtg
Fsc Application Data
Test set, elect. Equip.
NSN
6625-00-601-6089
Part Number
MK777-270
Description
Meter,electrical Frequency
CAGE
0BZM1

An instrument which measures the rate of regularly recurring variations in an electric current or voltage and is usually calibrated in hertz (cycles per second or cps). The value may be expressed by means of a pointer and calibrated dial vibrating reed or a digital read out display. For instruments which measure radio frequencies, see calibrator, frequency; and wavementer. excludes: counter electronic digital.

Part MK777-270 NSN 6625-00-601-6089

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16454
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:
TG
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.7000lbs
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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