YOKOGAWA 2100A, 2101A, 2181A, 2102A, 2182A User Manual

Bulletin 2100A-E

YOKOGAWA founded in 1915 is a world leader in the field of
indicating & measuring instruments and industrial control
instrumentation.

Suzhou Yokogawa Meter Company

Yokogawa Meters &

Instruments Corporation

Yokogawa started its business with analog meters

Yokogawa started its business with analog meters

and products have been widely used at various customers

and products have been widely used at various customers

such as industries, power plants, research laboratories

such as industries, power plants, research laboratories

and schools, etc.

and schools, etc.

Through more than 90 years of analog meters manufacturing,

Through more than 90 years of analog meters manufacturing,

Yokogawa provides you with high quality products

Yokogawa provides you with high quality products

with reliable trademark.

with reliable trademark.

CONTENTS

Switchboard Instruments .......................................................

Switchboard Instruments Line-up .........................................

Key to Switchboard Numbering System...............................

Accessories and Parts............................................................

Scale Forms and Divisions ....................................................

DC Ammeters, DC Voltmeters............ 2101A/2181A .............

AC Ammeters, AC Voltmeters............ 2102A/2182A .............

Wattmeters.......................................... 2105A/2185A .............

Varmeters ............................................ 2106A/2186A .............

3
4
5
6
7

9
11
13
16

Power Factor Meters .......................... 2107A/2187A .............

Frequency Meters............................... 2108A/2188A .............

Synchroscope..................................... 2109A.........................

Dimensions and Panel Mounting...........................................

Connection Diagrams .............................................................

ACCESSORIES ........................................................................

20
21
22
23
25
29

1

Usage Precautions

Safety instructions for Panel meters

Warning

Indicates usage precautions that must be read to ensure the safety of users and the equipment.

1. Usage environment and conditions

Do not use YOKOGAWA panel meters in locations such
as the following:

• Locations where the ambient temperature is outside
the range of 0 to 40°C

• Locations where relative humidity is outside the range
of 25 to 80%

• Locations subject to vibrations or shock impact

• Locations subject to rain, dripping water, or direct
sunlight

• Locations exposed to large amounts of dust, salt, soot,
or corrosive gases
(sulfurous acid gas, ammonia gas, hydrogen sulfide
gas, or other gases that corrode metals or plastics)

• Locations subject to strong external noise or electro­magnetic waves

• Locations subject to large amounts of static electricity

• Locations subject to large amounts of high frequencies
and waveform distortion (e.g., from inverters or
thyristor circuits)

2. Mounting method

Adhere to safety rules at the construction, mainte­nance and inspection

•Check the appearance of the packing box and panel
meters and confirm that there is no damage.

• Use the metal for mounting panel and ground it.

• If necessary, combine with washers and others and
fasten, in the case of panel boards and switchboards
are thin.

•Fasten nuts of mounting on boards to the proper
torque for the size of screw being used with the proper
tool.
Recommended tightening torque : M3 screws - 0.6N·m

M4 screws - 1.2N·m
M5 screws - 2.0N·m

3. Wiring

Adhere to the following rules when connecting the wires:

•When connecting an instrument with accessories, first
make sure none of the wires are live.

•When connecting main power directly, install and use
the proper fuse.

• The connector terminals on the wires should be
appropriate for the electricity load and terminal size.

• Connect the wires properly as illustrated in the wiring
diagrams of catalogs or on product labels.

• Attach to terminal cover for safety.

•Fasten terminal screws to the proper torque for the
size of screw being used with the proper tool.
Recommended tightening torque : M3 screws - 0.6N·m

M4 screws - 1.2N·m
M5 screws - 2.0N·m

• Instruments that are combined with current transform­ers (CT) should be properly connected to the second­ary side of the CT. Improper connection may result in a
CT failure, burned components, or a fire. When the
secondary side of a CT is disconnected, especially

while the primary side is powered, the secondary side
terminal will carry a high voltage which could result in
electrical shock. Therefore, the secondary side should
be short-circuited before the instrument is discon­nected.

4. Usage precautions

• Use the instruments at the front of mounting panel.

•Never touch the inside of mounting panel.

• Use the instrument within the rated specifications.
Failure to do so can cause the equipment to malfunc­tion or result in a failure.

• While the power is on, do not touch any terminals or
open the cover or case.

• The current transformer emits heat while powered, so
do not touch it.

5. What to do if the equipment functions abnor-

mally or fails

• If you notice abnormal heating, or a strange odor,
noises, or smoking or if the equipment seems to have
failed, immediately take steps such as cutting off the
input. Next, contact your YOKOGAWA sales office.

6. Maintenance and inspection

To ensure that your instrument operates properly,
perform the following checks on a regular basis:

• Check for damage to the instrument or accessories
due to heating or other factors.

•Check for loose attachments or screws (always turn off
the power before doing this to ensure safety).

• The instrument covers have been coated with an
antistatic agent to block static electricity. Gently wipe
dirt off the cover surfaces with a soft, dry cloth. Do not
use a wet cloth as this will reduce the effects of the
antistatic coating. Do not allow cloths made from
synthetic materials to contact the cover for an ex­tended period of time, and do not use benzene, paint
thinner, or similar substances. Doing so may cause the
cover to become deformed, discolor it, or cause
cracking.

• If the indicator reading becomes unstable due to static
electricity, coat the front and back of the cover with a
commercially available antistatic agent.

• Instrument service life will vary according to usage
conditions. In general, however, we recommend
replacing the instrument after about 10 years of use.

7. Disposal of product

•Panel meters do not contain batteries.

• Dispose of panel meters as general industrial waste.

8. For aluminum electrolytic capacitors

Frequency meters use aluminum electrolytic capaci­tors. The lifetime of aluminum electrolytic capacitors
are around 10 years when ambient temperatures are
23°C. If aluminum electrolytic capacitors run down and
meters are damaged, replace new frequency meters.

2

SWITCHBOARD INSTRUMENTS

Yokogawa offers a complete line of switchboard instruments to

meet your every needs.

Model are available 110 mm and 80 mm square siz e 250° to mea-

sure all electrical quantities.

All switchboard instruments in the series feature rugged, friction

free and shock resistant taut-band suspension elements.

All model of AC instruments except 80 mm size wattmeters and
varmeters are self-contained transducer needless external trans­ducer boxes.

The built-in transducer system offer many advantages including
low cost, linear scales, greatly reduced volt-ampere loss.

Yokogawa switchboard instruments offer a variety Models, such
as from single phase to three phase four wire instruments, as well
as model for balanced and unbalanced circuits. All instr uments
except synchroscope are complied with JIS C 1102.

110 mm square size switchboard instruments Se­ries. Plastic case with saf ety terminal protection cover .

Features

■ RMS rectifier type AC instruments

■ Platform scale --- No shadow on scale and readable, even

from sharp angles

■ Interchangeable scales save time

■ Easy to read linear scales and wide deflection angles

■ Taut-Band suspension --- eliminate friction and protects

against shock

■ Unti-framable case and terminal board

■ Provide terminal protect cover for safety

Specifications

In accordance with Japan Industrial Standard JIS C 1102: 2007

■ Accuracy --------------------------------- See next page

■ Full Scale Deflection Angle ---------- 250°(360° for Synchroscope)

■ Full Scale Length ---------------------- Approx. 196mm (7.7") for 110mm SQ

140mm (5.5") for 80mm SQ

■ Position of Use-------------------------- Vertical (Scale)

■ Pointer ------------------------------------ Lance type Pointer, Black

■ Operating Temperature Range ----- 0 to 40 °C

■ Operating Humidity Range ---------- 25 to 80 %RH

■ Storage Temperature Range -------- –10 to 50°C

■ Storage Humidity Range ------------- 25 to 80 %RH

■ Dielectric Strength --------------------- Between electrical circuit and the case: 3320V AC for 5 seconds

Between current circuit and voltage circuit: 2600V AC for 5 seconds
For Wattmeters, Varmeters and Power factormeters
(2000V AC for 2185A, 2186A and 2187A)

■ Insulation Resistance ----------------- More than 10 MΩ/500V DC between electrical circuit and the case,
current circuit and voltage circuit.

More than 5MΩ/500V DC between current circuit and voltage circuit.
For Wattmeters, Varmeters and Power factormeters

■ Safety Requirements------------------ Structural requirements are in accordance with JIS C 1010 for safety of
voltage test, insulation and other.
Reinforced insulation, between electrical circuit and case
Indoors, Altitudes up to 2000m, Pollution degree 2
Measurement category III
(Measurement category is not applied for non- JIS products.)
Maximum working voltage:600V

80 mm square size miniature switchboard instru­ments series high space utility.

Type 2101A to 2109A

Type 2181A to 2188A

Measurement Category

Measurement Category
CAT.I

CAT.II

CAT.III

CAT.IV

For measurements performed on circuits not

Description

directly connected to MAINS.
For measurements performed on circuits directly
connected to the low voltage installation.
For measurements performed in the building
where distribution panels and circuit breaker, etc
are installed.
For measurements performed at the source of
the low-voltage installation.

Remarks

Appliances, portable
equipments, etc.
Distribution board,
circuit breaker, etc.

Overhead wire, cable
systems, etc.

3

Entrance
Cable

CAT.IV

Internal Wiring

Distribution
Board

CAT.I

Fixed Equipment,
etc.

CAT.III

CAT.II

T

Equipment

Outlet

SWITCHBOARD INSTRUMENTS LINE UP

Name

DC AMMETERS / VOLTMETERS
DC SUPPRESSED METERS

AC AMMETERS / VOLTMETERS

Single phase 2-wire
Single phase 3-wire

WATTMETERS

VARMETERS

POWER
FACTOR
METERS

3-phase 3-wire

3-phase 4-wire

Single phase 2-wire

3-phase 3-wire

3-phase 4-wire

Single phase 2-wire

3-phase 3-wire

3-phase 4-wire

(Unbalanced)
(Balanced)
(Unbalanced)

(Balanced)
(Unbalanced)
(Balanced)
(Unbalanced)

(Balanced)
(Unbalanced)
(Unbalanced)

Operating Princile

Moving coil type

RMS rectifier type

Mean rectifier type

Feedback time division
multiplier type

Feedback time division
multiplier type

Phase defection type

Feedback time division
multiplier type

Symbol

Accuracy

1.5

1.5

2.5

1.5

1.5

5.0

Model

110mm SQ
2101A30
2101A35,36,37

2102A30

2102A31

2105A31
2105A32
2105A35
2105A34
2105A36
2106A31
2106A33
2106A35
2106A34
2106A36
2107A31
2107A33
2107A35
2107A36

80mm SQ
2181A00
2181A35,36,37

2182A00

2182A01

2185A31(*1)
2185A32(*1)
2185A35(*1)
2185A34(*1)
2185A36(*1)
2186A31(*1)
2186A33(*1)
2186A35(*1)
2186A34(*1)
2186A36(*1)
2187A31
2187A33
2187A35(*1)
2187A36(*1)

FREQUENCY METERS

SYNCHRO­SCOPE (*2)

Note:
*1: Attached external transducer box.
*2: not complied with JIS standard.

Single phase
3-phase

Differential type

Moving Magnet type

0.5

1.0

2.5

2108A30

2109A30

2188A30

—

4

KEY TO SWITCHBOARD NUMBERING SYSTEM

[Model/Suffix Code]

21

앮앮

(A)

앮앮

앮앮앮

-

- 앮 - L -

앮앮

Model

110 SQUARE

2101A 30
2101A 35

2102A 30

2102A 31

2105A 31

2106A 31

2107A 31

2108A 30

2109 31

Rating

Refer to Suffix Code

Designation of Frequency Used

N
A
B
C

Pointer

L Lance type pointer

Cover color and Set pointer

BL
BG
BS
GS

80 SQUARE

2181A 00

2181A 35
36
37

2182A 00

2182A 01

2185A 31
32
34
35
36

2186A 31
33
34
35
36

2187A 31
33
35
36

2188A 30

33

Always "N" or 50/60Hz Common
50Hz
60Hz
400Hz

Munsell N1.5
Munsell 7.5BG4/1.5
Munsell N1.5 with Set pointer (red color)
Munsell 7.5BG4/1.5 with Set pointer (red color)

* Specify Full scale value and Unit

DC AMMETERS,DC VOLTMETERS
DC AMMETERS ,VOLTMETERS

36

SUPPRESSED METER

37

AC AMMETERS ,VOLTMETERS
RMS rectifier type
AC AMMETERS ,VOLTMETERS
Mean rectifier type

32
34

WATTMETERS

35
36

33
34

VARMETERS

35
36

33

POWER FACTOR METERS

35
36

FREQUENCY METERS
SYNCHROSCOPE

5

[EX.]

Model

110 SQUARE AC AMMETERS

Rating

0 to 5A

Full scale value

and Unit

0 to 100A

Designation of

Frequency Used

50/60Hz Common

2102A30-A42-N-L-BL

ACCESSORIES AND PAR TS

Model

1set (Specify Model and suffix codes, Full scale value

Standard Scale Plate

Blank Scale Plate (With YOKOGAWA mark)

Cover

110 SQUARE

80 SQUARE

Terminal Cover (6 Terminal)
Terminal Cover (5 Terminal)
Terminal Cover (3 Terminal):(For 80 SQUARE)
Shunt lead

Cover with Set
pointer

Cover
Cover with Set

pointer

(Black)
(Blue Green)
(Black)
(Blue Green)
(Black)
(Blue Green)
(Black)
(Blue Green)

219900

219900/001

219930-11
219930-12
219930-13
219930-14
219930-31
219930-32
219930-33
219930-34
219930-22
219930-21
219930-23
219930-24

and unit,VT ratio and CT ratio)
EX.: 2101A36-AHE-N-L-BL 0 to 250kPa
1set (Specify Model and suffix codes, and Blank scale)
EX.: 2101A36-AHE-N-L-BL Blank scale
1 pce
1 pce
1 pce (Set pointer is red)
1 pce (Set pointer is red)
1 pce
1 pce
1 pce (Set pointer is red)
1 pce (Set pointer is red)
10 sheets (up side)
10 sheets (down side)
10 sheets
Round Resits 0.05Ω less, For M4 terminal, 1.5m 1set

Pointer

Lance type pointer

0 to 100A

Descriptions

Cover color and

Set pointer

Munsell N1.5

6

SCALE FORMS AND DIVISIONS

Maximum

scale
value

3.5
35

350

3500

7

70

700

7000

2

20

200

2000

±1

±10

±100

±1000

2.5
25

250

2500

3

30

300

3000

±1.5

±15

±150

±1500

Maximum

Divisions

scale

Divisions

value

35 Division

7.5
75

750

7500

40 Division B

4.5
45

450

4500

9

90

900

9000

50 Division B 50 Division C 60 Division A

±2.5

±25

±250

±2500

±5

±50

±500

±5000

60 Division B

1.5
15

150

1500

37.5 Division

45 Division

75 Division

For 210 A 110mm only

Maximum

scale
value

4

40

400

4000

8

80

800

8000

±2

±20

±200

±2000

±4

±40

±400

±4000

1

10

100

1000

5

50

500

5000

1.2
12

120

1200

6

60

600

6000

±3

±30

±300

±3000

±6

±60

±600

±6000

1.5

15

150

1500

Divisions

40 Division A

50 Division A

30 Division

For 218 A 80mm only

Note 1. This standard scale divisions are applied to 2101A, 2102A, 2105A, 2106A, 2181A, 2182A, 2185A and 2186A.

2. Numerals are indicated to the major line (▼).

3. All scales divisions are linear distribution.

4. To be applied this standard scale division, when specify special maximum value.

•not standard maximum scale value (Ex.) 2300 --- 46 divisions

•minimum scale value are not zero (Ex.) 50 to 100 --- 50 divisions

7

SCALE FORMS AND DIVISIONS

For Suppressed meter
2101A, 2181A

For Expanded scale
2102A, 2182A voltmeter

Ex.
70 to 130V=245°

For Frequency meter
2108A, 2188A

Ex.
45 to 55Hz

1

80

46

0

70

48

45

90

Extended scale Ammeters

2

3

4

5

3

m

s

2102A, 2182A
(Ex.)100A 2 times

Red line and numerals for
extended portion
(Ex. 2 Times 150 and 200A)
3 Times -- 2 and 3 Times
5 Times -- 3 and 5 Times

100

110

For Power Factor meter

120

130

V

2107A, 2187A

60

40

20

0

A

1.0

.9

LEAD LAG

.7

.5

COS

80

100

150

200

.9

.7

.5

50

52

For Synchroscope
2109A

SLOW

FAST

54

Hz

55

SYNCROSCOPE

Single division/Double
numerals
Ex. 0 to 5/0 to 10A (50 Div.)
All div.line and numerals
are black.
Size of numerals are
different high.
Apply same division only.

Kinds of division lines

1. Kinds of division lines

Medium line
Minor line
Major line (with numerals)

2. 3 characters, standard.
EX. (1) 1200V → 1.2kV

(2) 20000rpm → 20 × 1000rpm

4

2

2

1

0

6

3

8

4

10

A

5

Double division/Double
numerals
Ex.0 to 300/0 to 450 m/min
(60 Div./45 Div.)
Outer -- Black line and

numerals

Inner -- Red line and

numerals

10

5

0

20

10

m/min

15

30

20

30

45

25

40

8

2101A/2181A

DC AMMETERS

-AEG

-AEM

-AFA

-AFN

-AFX

-AGZ

-AHM

-AHY

-AJR

-AKG

-AKM

-ALA

-ALC

-ALE

-ALJ

-ALS

-AMF

-AMT

-AND

-ANG

-ANL

-A00

-D00

-A01

-A04

-A05

-D00

-A06

Suffix Codes

-N

-L

-BL

-BG

-BS

-GS

110 SQUARE Class 1.5
80 SQUARE Class 1.5
0 to 300 microA (Approx. Internal Resistance : 1,050 ohm)
0 to 500 microA (Approx. Internal Resistance : 630 ohm)
0 to 1mA (Approx. Internal Resistance : 185 ohm)
0 to 3mA (Approx. Internal Resistance : 17 ohm)
0 to 5mA (Approx. Internal Resistance : 10 ohm)
0 to 10mA
0 to 30mA
0 to 50mA
0 to 100mA
0 to 300mA
0 to 500mA
0 to 1A
0 to 1.5A
0 to 2A
0 to 3A
0 to 5A
0 to 7.5A
0 to 10A
0 to 15A
0 to 20A
0 to 30A
0 to (300 microA to 1A),
Optional intermediate rating

-a to 0 to +b where a or less 72% × (a+b), a+b=1mA to 2A
For zero-center and similar scale meter
0 to 50mV, For external shunt use
0 to 60mV Specify scale range
0 to 100mV (No shunt is manufactured)

-a to 0 to +b (b=50mV) where a or less 50mV,
For zero-center and similar scale meter
0 to 50mV, Meter with VR, 0 to 2 ohm Variable

Always "-N"
Lance type pointer (Black), Always "-L"

Munsell N1.5
Munsell 7.5BG4/1.5
Munsell N1.5 with Set pointer (red color)
Munsell 7.5BG4/1.5 with Set pointer (red color)





Model
2101A 30
2181A 00

Rating

Designation of
Frequency Used
Pointer
Cover color and Set pointer

SPECIFY THE FOLLOWING WHEN ORDERING

(1) Model and Suffix codes
(2) Full scale value and unit
(3) For suffix code A00 or D00, specifiy rating and full scale value.

Descriptions














(Voltage Drop : 50mV)















Notes :

(1) Scale other than Yokogawa' standard format will be special order.
(2) For each meter with the rating of 50mV,60mV or 100mV, one-pair(1.5m) of shunt leads are supplied.
(3) External shunts are not supplied.

9