Electrical Frequency Meter

Features

Specifications

• Circuit Current For Which Designed:
  Ac
• Mounting Hole Diameter:
  0.156 inches
• Overall Diameter:
  3.500 inches
• Mounting Bolt Circle Diameter:
  3.160 inches
• Furnished Items And Quantity:
  Nut 4; washer 4
• Indicator Type:
  Vibrating reed
• Installation Design:
  Panel
• Register Quantity:
  1
• Mounting Arrangement Style:
  Three hole/stud bolt circle
• Dial Scale Marking Color:
  Black single indicator single range
• Resonant Reed Quantity:
  9
• Accuracy In Percent:
  -1.0/+1.0 at full scale single indicator single range
• Meter Depth Behind Mounting Flange:
  2.125 inches
• Meter Body Diameter Behind Mounting Flange:
  2.800 inches
• Movement Type:
  Vibrating reed
• Background Color:
  White single indicator single range
• Power Source:
  External
• Mounting Facility Type And Quantity:
  3 unthreaded hole
• Measurement Range:
  +380.0/+420.0 hertz single indicator single range
• Circuit Attachment Method And Quantity:
  2 screw and 2 solder lug and 2 threaded stud
• Operating Voltage Rating In Volts:
  Between 95.0 ac and 135.0 ac
• Special Markings:
  Frequency at top of meter face and cycles at bottom; lines at 380, 390, 400, 410 and 420 hz
• Nuclear Hardness Critical Feature:
  Nonhardened
• Style Designator:
  Round flush mtg
• Supplementary Features:
  Power consumption 6.5 w max
• Fsc Application Data:
  Test set, elect. Equip.
• Federal Supply Class (fsc):
  Electrical and electronic properties measuring and testing instruments
• National Stock Number (nsn):
  6625-00-938-6501