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Electrical Frequency Meter

Model / MPN: 990622-01 | NSN: 6625-00-844-6631
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
6625-00-844-6631
Sold in multiples of
1 EA
DEMIL
NO
Overall Length
3.156 inches
Mounting Hole Diameter
0.125 inches
Overall Diameter
2.685 inches
Mounting Bolt Circle Diameter
2.440 inches
Indicator Type
Dial w/pointer
Installation Design
Panel
Register Quantity
1
Frequency Response Range
+380.000/+420.000 hertz
Resonant Reed Quantity
11
Accuracy In Percent
-0.5/+0.5 at full scale single indicator single range
Meter Depth Behind Mounting Flange
2.343 inches
Meter Body Diameter Behind Mounting Flange
2.210 inches
Movement Type
Vibrating reed
Mounting Facility Type And Quantity
3 unthreaded hole
Measurement Range
+100.0/+150.0 volts, dc single indicator single range
Features Provided
Zero adjuster
Circuit Attachment Method And Quantity
2 solder lug
Nuclear Hardness Critical Feature
Nonhardened
Special Test Features
Part iaw mil-std-130
Style Designator
Round flush mtg
Supplementary Features
Individual reeds are tuned to within porm 0.3 pct of their ratio frequency
Fsc Application Data
Test set, elect. Equip.
990622 Series Parts
Solicitations
Solicitation Description Qty UOM Close Date
SPE7M917T7354 Meter, Electrical Fr 6 EA 08/31/2017
SPE7M918T1187 Meter, Electrical Fr 6 EA 02/26/2018

Pricing and Availability

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990622-01 Cross Reference
  • 1777730-1
  • 2997
  • 990622
  • MMI-8719
  • 322997
  • MMI8719
  • MF11-2997
  • 990622