Electrical Frequency Meter

Features

Specifications

• Circuit Current For Which Designed:
  Ac
• Mounting Hole Diameter:
  0.150 inches
• Scale Division Quantity:
  20 single indicator single range
• Frequency Rating:
  Between 55.0 hertz and 75.0 hertz
• Overall Diameter:
  3.500 inches
• Mounting Bolt Circle Diameter:
  3.160 inches
• Furnished Items And Quantity:
  Term. Hdw 2
• 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:
  21
• Accuracy In Percent:
  -0.3/+0.3 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
• Scale Graduation Type:
  Linear single indicator single range
• Measurement Range:
  +55.0/+75.0 hertz single indicator single range
• Features Provided:
  Zero adjuster
• Circuit Attachment Method And Quantity:
  2 threaded stud
• Nuclear Hardness Critical Feature:
  Nonhardened
• Style Designator:
  Round flush mtg
• Supplementary Features:
  Power requirements: 2 watts ; operating temperature minus 65 to plus 85 degrees centigrade
• Fsc Application Data:
  Test set, elect. Equip.
• Federal Supply Class (fsc):
  Electrical and electronic properties measuring and testing instruments
• National Stock Number (nsn):
  6625-00-993-3466