Electrical Frequency Meter

Features

Specifications

• Circuit Current For Which Designed:
  Ac
• Dielectric Withstanding Voltage In Volts:
  3000.0
• Mounting Hole Diameter:
  0.200 inches
• Scale Division Quantity:
  50 single indicator all ranges
• Frequency Rating:
  390.0 hertz
• Overall Diameter:
  4.500 inches
• Environmental Protection:
  Dust resistant and fungus resistant and heat resistant and humidity resistant and shock resistant and vibration resistant and water resistant
• Environmental Protection:
  Airtight and
• Mounting Bolt Circle Diameter:
  4.124 inches
• Furnished Items And Quantity:
  Nut 3; lockwasher 3; seal 1
• Indicator Type:
  Dial w/pointer
• Installation Design:
  Panel
• Mounting Arrangement Style:
  Three hole/stud bolt circle
• Frequency Response Range:
  +340.000/+440.000 hertz
• Frequency Response Range:
  +340.000 to 440.000 hertz
• Dial Scale Marking Color:
  Black single indicator all ranges
• Accuracy In Percent:
  -2.0/+2.0 at full scale single indicator all ranges
• Accuracy In Percent:
  -2.0 to 2.0 at full scale single indicator all ranges
• Meter Depth Behind Mounting Flange:
  1.400 inches
• Meter Body Diameter Behind Mounting Flange:
  3.600 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:
  3 screw and 3 unthreaded hole
• Scale Graduation Type:
  Linear single indicator all ranges
• Measurement Range:
  +394.0/+404.0 hertz single indicator 1st range+340.0/+440.0 hertz single indicator 2nd range
• Measurement Range:
  +340.0 to 440.0 hertz single indicator 2nd range
• Measurement Range:
  +394.0 to 404.0 hertz single indicator 1st range
• Scale Selection Method:
  Terminal
• Features Provided:
  Magnetic shield and zero adjuster
• Movement Suspension Method:
  Jewel pivot base
• Circuit Attachment Method And Quantity:
  2 wire lead
• Operating Voltage Rating In Volts:
  440.0 ac
• Special Markings:
  On back, sealed do not open
• Nuclear Hardness Critical Feature:
  Nonhardened
• Special Test Features:
  Complies with mil-m-10304
• Style Designator:
  Round flush mtg
• Fsc Application Data:
  Test set, elect. Equip.
• Federal Supply Class (fsc):
  Electrical and electronic properties measuring and testing instruments
• National Stock Number (nsn):
  6625-00-789-1247
• Special Features:
  Ruggedized