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Electrical Frequency Meter

Model / MPN: 637-16750 | NSN: 6625-00-004-8066
ITAR Registered seal

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.

Product Details
NATO Stock Number
6625-00-004-8066
Sold in multiples of
1 EA
DEMIL
NO
Circuit Current For Which Designed
Dc
Overall Length
2.060 inches
Mounting Hole Diameter
Between 0.143 inches and 0.157 inches
Mounting Stud Length
Between 0.375 inches and 0.625 inches
Overall Diameter
3.510 inches
Mounting Bolt Circle Diameter
3.160 inches
Indicator Type
Dial w/pointer
Installation Design
Panel
Mounting Arrangement Style
Three hole/stud bolt circle
Dial Scale Marking Color
Black single indicator single range
Meter Depth Behind Mounting Flange
1.660 inches
Meter Body Diameter Behind Mounting Flange
2.800 inches
Background Color
White single indicator single range
Mounting Facility Type And Quantity
3 unthreaded hole
Measurement Range
+0.0/+160.0 volts, ac single indicator 2nd range
Measurement Range
+0.0 to 133.0 volts, ac single indicator 1st range
Measurement Range
+0.0 to 160.0 volts, ac single indicator 2nd range
Scale Selection Method
Terminal
Features Provided
Zero adjuster
Circuit Attachment Method And Quantity
2 threaded stud
Special Markings
Percent rated current, double width red line at 0.75 amps for 60 hzscale, double width blue line at 0.625 amps for 50 hz scale
Nuclear Hardness Critical Feature
Hardened
Style Designator
C1 round flush mtg
Style Designator
Round flush mtg

Pricing and Availability

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637-16750 Cross Reference
  • 04306-3004
  • 69-597
  • 35.7002
  • 300-10
  • 267842
  • 66250048066
  • 300-10