Model: HFM2

Electrical Frequency Meter

Special Features:

Self contained

Properties:

Circuit Current For Which Designed
Ac
Dielectric Withstanding Voltage In Volts
2600.0
Overall Length
2.350 inches
Center To Center Distance Between Mounting Facilities Parallel To Length
2.740 inches
Center To Center Distance Between Mounting Facilities Parallel To Width
2.373 inches
Overall Height
3.500 inches
Overall Width
3.500 inches
Scale Division Quantity
50 single indicator single range
Frequency Rating
60.0 hertz
Mounting Stud Length
0.500 inches
Shortest Horizontal Distance Between Mounting Centers
1.370 inches
Furnished Items And Quantity
Nut 4; washer 4
Indicator Type
Dial w/pointer
Installation Design
Panel
Mounting Arrangement Style
Three hole/stud triangular
Frequency Response Range
+25.000/+400.000 hertz
Frequency Response Range
+25.000 to 400.000 hertz
Dial Scale Marking Color
Black single indicator single range
Accuracy In Percent
-3.0/+3.0 at full scale single indicator single range
Accuracy In Percent
-3.0 to 3.0 at full scale single indicator single range
Meter Depth Behind Mounting Flange
1.210 inches
Meter Body Diameter Behind Mounting Flange
2.700 inches
Movement Type
Moving iron vane
Background Color
White single indicator single range
Pointer Color
Black single indicator single range
Power Source
External
Mounting Facility Type And Quantity
3 threaded stud
Scale Graduation Type
Linear single indicator single range
Measurement Range
+55.0/+65.0 hertz single indicator single range
Measurement Range
+55.0 to 65.0 hertz single indicator single range
Mounting Stud Diameter
0.112 inches
Scale Selection Method
Terminal
Features Provided
Zero adjuster
Movement Suspension Method
Jewel pivot base
Circuit Attachment Method And Quantity
2 threaded stud
Operating Voltage Rating In Volts
240.0 ac
Phase
Single
Material
Plastic
Nuclear Hardness Critical Feature
Nonhardened
Special Test Features
Meets ansi specification c-39.1
Style Designator
Rectangular flush mtg
Fsc Application Data
Test set, elect. Equip.
NSN
6625-00-391-8894
Part Number
HFM2
Description
Meter,electrical Frequency
CAGE
7F761

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.

Part HFM2 NSN 6625-00-391-8894

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16454
FIIG:
A310A0
Concept No.:
App. Key:
A
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
A
ESD:
ESD:
MMAC:
TG
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.5000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061700
UFC:
34580
LTL:
RATING VARIABLE
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 9030908030
  • SITC: 87479
  • End Use: Measuring, testing, control instruments
  • NAICS: 334515
  • USDA: 1

Freight Class: Parts and accessories of articles of schedule b subheading 9030.39

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