PICTURE FRAME SHAPE INSTRUMENT
FK SERIESOUTLINEFK series is a Picture Frame Shape Instruments meter, which
only the scale part is in front of panel. This series have 2 types,
FK-7 and FK-5.
FK series is one of measument instrument suitable for electricand electronic equipment. Adoption with knife-edge pointer andFK - 5C

it can also use with high accuracy mirror scale plate. In addition,
this series meter is with superior quality, be fully satisfied withhigh reliability and also with standard JIS C 1102-1～9 (IEC60051-1 matching) strong as vibrating and impulse.

FEATURES► High quality and high performance meter.
FK - 7C► Adopting transducer with electronics technology, more model
product is expanding.
► Received indicator for physical value scale also can bemanufacture.
► Meter with mirror knife-edge pointer also can be manufacture.
► Meter material is flame retardant.
► One-touch installation.

1

Picture Frame Shape Instrument - FK Series
TYPE CODE DESIGNATION

F

(1)

K–

(2)

C

(3)

–

(4)

(1) Type of measurand
MarkMeasurand

Operation PrincipleM

DC current, voltage

Permanent magnet moving coilX

DC receiving indicator

Permanent magnet moving coilY

AC receiving indicator

Rectifier

CAC current, voltage

Rectifier/ RMS value rectifierW

AC power

Transducer

WVB

Reactive power (balanced)

Transducer

WV

Reactive power (unbalanced)

Transducer

PB

Power factor (balanced)

Transducer

PPower factor (unbalanced)

Transducer

A

Frequency meterTransducer(2) Shape
Mark

Picture-Frame Shape Meter7

127×735100×57(3) Special Specification
MarkSpecification

HSCR

C

Cycle Control(4) Kind of Circuit
MarkCircuit

12Single phase

13Single phase 3-wire

33

Three phase 3-wire34

Three phase 4-wire*Please specify this circuit for AC power, Reactive power & Power factor

2Picture Frame Shape Instrument - FK Series
COMMON STANDARD SPECIFICATIONSITEMSPECIFICATIONJIS C 1102:2007 [Electric Indicating Meter Direct Acting Type]Standard

IEC 60051-1 Compliant

Class

Refer to [List of FK series]

Support system

Taut band system

Swing angle of meter

86°

Dimensions meter from front

FK-7C: 127×73mm
FK-5C: 100×57mm
FK-7: 87mm

Length of scale

FK-5: 72mm

Color of scale plate

WhitePointer

Knife-edge (Red)Installation posture

Vertical (⊥)

Material panel

Iron & non-iron plate

Thickness panel

4mm or less

Color of coverBlack (Munsell N1.5)

Material of case

Cover: Phenol resin (FK-7C), ABS resin (FK-5C)

Insulation resistance

Between electric circuit and outer case

DC500V, 50MΩ or more

Voltage test

Between electric circuit and outer caseAC3320V, between 5sec.

Safetyrequirements

Standard

JIS C 1010-1

Insulation

Between electric circuit and outer case: Base of insulation

Use

For indoor use (Cubicle etc.)

High altitude

2000m or less

Pollution

Pollution level 2

Measure category

CATⅢ

Max. circuit voltage

600V (Ammeter)

Operated temperature/-10～55℃, Average day temperature 40℃ or less, 25～85%RH

Humidity limit(Reference to steel ship rules ambient temperature 45℃)

Storage temperature range-20～70℃

STANDARD SCALE DIVISION
11.5

2

2.5

34

5

6

7.5

89FK-7C

5075

405060

80

5060

75

80

45

FK-5C

50

30

40503040503037.5

4045

Max. scale value (10-time)
Type3

Picture Frame Shape Instrument - FK Series
COMMON SPECIAL SPECIFICATIONS(Please Specify)

ITEM

Scale

SPECIFICATION

Color line

Red, Green, Yellow (please specify)

Extend scaleFCK: 2～5-time extend

Color area (bar)Red, Green, Yellow (please specify)

Double scale

Please specify

Double seal

Please specify

Max. scale division7-type:100 division; 5-type: 80 division

MirrorPlease specify

Special markPlease specify

Vibration proof specification

Vibration
Shock

2～10Hz amplitude 15mm p-p
2～55Hz, 29.4m/s2147m/s2, 30-time

Tropical specification

Rust preventative「FOR TROPICS」will display at the name plate

PointerRod-shape (black) combine use with multiple scale etc.

Control pointer－Installation posture

Horizontal or Inclined (specify the angle)

Flame-retardant materials

Cover－

Protection circuit of meter

Overcurrent
Overvoltage

Specify for necessary tolerated dose

For SCR control waves

Up to ±10%, ±20%, ±30% of central scale value
75% or more of scale length
Up to 20% of upper limit value of effective measuring range
95% or more of scale length
Ammeter
Up to 50% of upper limit value of effective measuring range
75% or more of scale length
AC current, AC voltage, Frequency

For cycle control use

AC current, AC voltage (Recitifier Type)

Scale (single item)

Not JIS markColor of cover

Please specifyOthers

Please consultation with us for the special frequency

Voltmeter

Part of extended scale

PURCHASE SPECIFICATIONS
Item to Specify When Purchase1).Type Name2).Rated (Max. scale/ Input) *1
3).Color of cover4).Terminal cover (specify if require)5).Units6).Options (Refer to Common Special Specification)
7).Test report (specify useful frequency and number of copies require)*1. For max.scale value watt meter or var meter, please refer to List of Standard Max. Scale Value.
Please specify frequency for power factor meter according to the specification.

4Picture Frame Shape Instrument - FK Series
LIST OF FK SERIESMODELProduct
DC Ammeter

FK – 7 C
Principle
Moving coil

DC VoltmeterType

FK – 5 CClassTypeClass

FMK-7C

1.5

FMK-5C

2.5

FMK-7C

1.5

FMK-5C

2.5

DC Receiving Indicator

Moving coil

FXK-7C

1.5

FXK-5C

2.5

AC Receiving Indicator

Rectifier

FYK-7C

1.5

FYK-5C

2.5

FCK-7C

1.5

FCK-5C

2.5

FCK-7C

1.5

FCK-5C

2.5

FWK-7C-12

1.5

FWK-5C-12

2.5

FWK-7C-13

1.5

FWK-5C-13

2.53 phase

FWK-7C-33

1.5

FWK-5C-332.5

3 phase 4-wire

FWK-7C-34

1.5

FWK-5C-34

2.5

Single phase

FWVK-7C-12

1.5

FWVK-5C-12

2.5

3 phase(balanced)

FWVBK-7C-33

1.5

FWVBK-5C-33

2.5

FWVK-7C-33

1.5

FWVK-5C-33

2.5

3 phase 4-wire

FWVK-7C-34

1.5

FWVK-5C-34

2.5

Single phase

FPK-7C-12

FPK-5C-12

FPBK-7C-33

FPBK-5C-33

AC Ammeter

Rectifier

AC Voltmeter
Single phase
Watt
Meter

Var Meter

PowerFactor
Meter

Single phase3-wire3 phase(unbalanced)

3 phase(balanced)
3 phase(unbalanced)
3 phase 4-wire(balanced)
3 phase 4-wire(unbalanced)

Frequency Meter

Transducer

Transducer

Transducer

Transducer

FPK-7C-33

5.0

FPK-5C-33

FPBK-7C-34

FPBK-7C-34

FPK-7C-34

FPK-5C-34

FAK-7C

1.0

FAK-5C

5.0

1.0►Keep in mind please, Transducer type meter does transitional indication at voltage input start.

5Scale Specification

Wide Angle Meter
Ex.: L-110C

Square Shape Meter
Ex.: PK-80C

Standard Scale
Scale digit: Black
Scale line : Black
Unit mark : Black
Scale division :Refer to standard lancet shape pointer division

Moving iron type can be left out the lower value part ofscale
Scale division :Refer to standard lancet shape pointer division± Scale Meter (Both Side Deflect Meter)
Scale digit: Black
Scale line : Black
Unit mark : Black

Extend Scale (2-Fold Extend)
Scale digit: Black ; Extend part: Red
Scale line : Black ; Extend part: Red
Unit mark : Black

Single Scale Double Seal Meter
Scale digit: Black
Scale line : Black
Unit mark : Black
Standard place a seal of scale figure :Higher value will display at inside & smaller value will
display at outside

DAIICHI ELECTRONICS CO., LTD
Electrical Indicating Meter Catalog e-99-024/http://www.daiichi-ele.co.jp

Scale Specification

Square Shape Meter
Ex.: PK-80C

Wide Angle Meter
Ex.: L-110C

Double Scale Double Seal
Scale digit: Black
Scale line : Black
Unit mark : Black
Scale division :Refer to standard lancet shape pointer division
Standard place a seal of scale figure :Higher value will display at outside & smaller value will
display at inside
For wide angle meter :Higher value will display at inside & smaller value will
display at outside

Coloring Scale (Color Line)

Color Line

Scale color line : Red, Yellow, Green
Possible combine the color line & color figure to use fordouble scale

Color Belt

Color Line

Color Belt

Color Belt
Color Belt

Color Belt : Red, Yellow, Green

Scale line and Scale figure
1) Type of scale line
Scale figure will print at main line
Please refer to standard lancet shape pointerdivision & standard knife shape pointer division

Main Line Center Line Thin Line

Main LineCenter LineThin Line2) Figure of scale : Max. 4-digit (9999)-1

If 10000 is exceed, unit will be change like 6.6kV or use multiple like 36×1000min3) Please have a consultation with us if scale division is diffirent with standard division (odd scale)
Please specify for Max. division
4) Display 「0」 will be left out if the scale figure after decimal point is Zero. (like scale figure 1 as below)
5) Display 「0」 will be left out if the scale figure before decimal point is Zero. (like scale figure 0.5 as below)

Ex. : For range value 1.5
Wide Angle Meter
Scale will display by｢1.0｣ for wide angle meter (except BRL & RL series)

Square Share Meter
BRL & RL series is same scale as square share meter

DAIICHI ELECTRONICS CO., LTD
http://www.daiichi-ele.co.jp
Electric Indicating Meter Catalog e-99-024/-

§ Wide Angle METER §STANDARD DIVOSION OF LANCET-SHAPED POINTER

L series

PK series

L-65C

RL-80C

PK-60C, 80C, 100C

PK-120C

LK-8C, 10C

LK-12C

BRL-110CH Instant Meter

F-10

F

＊1＊2＊1＊2＊3＊6＊714

§ Wide Angle METER §LK series

F series

F series

Utility meter＊2＊2＊8＊2＊4＊8＊2＊4＊8＊9＊515

§ Wide Angle METER §STANDARD DIVOSION OF KNIFE-EDGE POINTER► Division line part ofis omitted for moving iron type meter.

► For scale extended meter, red color line and numbers of extended part.
► Have a consultation with us for +/- meter, notation of max. scale value, multiple scale meter, etc.
► *1, becomes 15 divisions for scale extended ammeter PK-60C, PK-80C and LK-8C.
► *2, becomes 20 divisions for scale extended ammeter PK-120C, LK-12C, F-10, 15, 17, RL-80C and RL-110C.
► *3, becomes 15 divisions for scale extended ammeter PK-120C, LK-12C, F-10, 15, 17 and RL-80C.
► *4, becomes 25 divisions for scale extended ammeter RL-110C.
► *5, seal numbers: 0, 30, 60, 90 for type meter F-15, and 17.
► *6, becomes 16 divisions for scale extended ammeter PK-120C, LK-12C, F-10, RL-80C.
► *7, becomes 18 divisions for scale extended ammeter PK-120C, LK-12C, F-10, RL-80C.
► *8, becomes 30 divisions for scale extended ammeter F-15, 17.
► *9, becomes 37.5 divisions for scale extended ammeter F-15, 17.

16