DRAWING No SP21 18-1805 2040 2040
取扱説明書
INSTRUCTION MANUAL
SP21
マルチテスタ
MULTITESTER
DRAWING No SP21 18-1805 2040 2040
目 次
【1】安全に関する項目〜ご使用前に必ずお読みください〜
【2】用途と特長
【3】各部の名称
【4】指示の読み取り方
【5】機能説明
【6】測定方法
〜
【7】保守管理について
【8】アフターサービスについて
【9】仕 様
DRAWING No SP21 18-1805 2040 2040
CONTENTS
【1】
SAFETY PRECAUTIONS:Before use,read the following safety precautions
……
2
1-1 Explanation of Warning Symbols
……………………………
2
1-2 Warning Instruction for safe use
……………………………
2
1-3 Maximum Overload Protection Input
………………………
4
【2】APPLICATION AND FEATURES
………………………………
5
2-1 Application
……………………………………………………
5
2-2 Features
………………………………………………………
5
【3】NAME OF COMPONENT UNITS
………………………………
6
【4】SCALE READING
………………………………………………
7
【5】DESCRIPUTION OF FUNCTIONS
……………………………
9
5-1 Knob and Adjuster
……………………………………………
9
5-2 How to Use the Stand
………………………………………
9
【6】MEASUREMENT PROCEDURE
………………………………
11
6-1 Start-up Inspection
……………………………………………
11
6-2 How to Setup Range （Selection of a appropriate range）
…
13
6-3 Preparation for Measurement
………………………………
13
6-4 Voltage Measurement
………………………………………
15
6-4-1 DCV Measurement（ ）
………………………………
15
6-4-2 ±DCV Measurement（±DCV ）
……………………
17
6-4-3 ACV Measurement（〜）
………………………………
19
6-5 DCA Measurement（ ）
……………………………………
21
6-6 Resistance Measurement（Ω）
……………………………
23
6-7 Battery check
…………………………………………………
25
6-8 Checking Continuity（ ）
……………………………………
27
6-9 Measuring Capacity（μF）
…………………………………
29
6-10
DC High Voltage measurement（Optional HV Probe）
……
31
6-11
End of Measurement
…………………………………………
34
【7】MAINTENANCE
…………………………………………………
34
7-1 Maintenance and Inspection
…………………………………
34
7-2 Calibration
………………………………………………………
34
7-3 How to Replace Battery and Fuse
…………………………
35
7-4 Storage
…………………………………………………………
38
【8】AFTER-SALE SERVICE
…………………………………………
38
8-1 Repair
…………………………………………………………
38
8-2 For Information or Enquiries
…………………………………
40
8-3 Sanwa Web Site
………………………………………………
40
【9】SPECIFICATIONS
………………………………………………
42
9-1 General Specification
…………………………………………
42
9-2 Optional Accessories
…………………………………………
42
9-3 Measurement Range and Accuracy
…………………………
44
DRAWING No SP21 18-1805 2040 2040
【1】
安全に関する項目〜ご使用の前に必ずお読みください〜
1
-
1 警告マークなどの記号説明
〜
1
-
2 安全使用のための警告文
警 告
DRAWING No SP21 18-1805 2040 2040
To ensure that the meter is used safely,Be sure to observe
the instruction when using the instrument.
Protection circuit may be undermined by unjustifiable usage that
does not the guidelines in the instruction manual.
1Never use meter on the electric circuit that exceed 6 kVA.
2Pay special attention when measuring the voltage of AC 33
Vrms46.7 Vpeakor DC 70 V or more to avoid injury.
3Never apply an input signals exceeding the maximum rating
input value.
4Never use meter for measuring the line connected with
equipmenti.e.motorsthat generates induced or surge
voltage since it may exceed the maximum allowable voltage.
1
SAFETY PRECAUTIONS:Before use,read the following safety precautions
This instruction manual explains how to use your multimeter
SP21 safely. Before use,please read this manual thoroughly. After
reading it,keep it together with the product for reference to it when
necessary.
The instruction given under the heading WARNING CAUTION
must be followed to prevent accidental burn or electrical shock.
1-1 Explanation of Warning Symbols
The meaning of the symbols used in this manual and attached to
the product is as follows.
Very important instruction for safe use.
The warning messages are intended to prevent accidents to
operating personnel such as burn and electrical shock.
The caution messages are intended to prevent damage to
the instrument.
DC Voltage Glaund
AC Voltage Plus input
Resistance Minus input
Continuity Fuse
Fuse & Diode protection Double insulation
Drop proof
1-2 Warning Instruction for safe use
WARNING
DRAWING No SP21 18-1805 2040 2040
1
-
3 最大過負荷保護入力値
1. 5
DRAWING No SP21 18-1805 2040 2040
5Never use meter if the meter or test leads are damaged or
broken.
6Never use uncased meter.
7Be sure to use a fuse of the spesified rating or type. Never
use a substitute of the fuse or never make a short circuit of
the fuse.
8Always keep your fingers behing the finger guards on the
probe when making measurements.
9Be sure to disconnect the test pins from the circuit when
changing the function or range.
10Be sure to disconnect the test pins from the circuit when
changing the function or range.
11Never use meter with wet hands or in a damp environment.
12 Do not use the device near an item of strong electromagnetic
generation or a charged item.
13Never open tester case except when replacing batteries or
fuse. Do not attempt any alteration of original specifications.
14To ensure safety and maintain accuracy,calibrate and check
the tester at least once a year.
15 Indoor use.
1-3 Maximum Overload Protection Input
Function
Range
DCV 30600
ACV 30600
DCV 0.312
ACV 12
DCA 30 m/0.3
DCA 60
Full scale
value at
the ranges
Voltage and current
input prohibited
DC 1000 VAC 750 V
or PEAK MAX 1100 V
DCAC 200 V
or PEAK MAX 250 V
DCAC 0.5 A
DC
AC 1 mA
DC
AC 200 V
or PEAK MAX 250 V
Note AC voltage is regulated by rms value of sinusoidal wave.
is within 5 second.
1. 5
Input
Maximu rating
input value
Maximum overload
protection input
DC 2 V
DRAWING No SP21 18-1805 2040 2040
【2】用途と特長
2
-
1 用 途
2
-
2 特 長
【2】APPLICATION AND FEATURES
2-1 Application
This instrument is portable multimeter designated for
measuremaent of week current circuit.
2-2 Features
・Band meter of drop shock type with high sensitivity has been
employed.
・A stand has adhered.
・It can be measurement in a zero center meter.
・A continuity buzzer has adhered.
・The main unit case and the circuit board is made of fire retarding
materials.
・Circuit protection is double protection according to fuse and
diode.
DRAWING No SP21 18-1805 2040 2040
【3】各部の名称
NAME OF COMPONENT UNITS
Scale
Pointer
Zero position adjuster
Range selector knob
Meter cover
Panel
0
adjuster knob
input terminal
input terminal
テストリード（TL-21a）
Test lead
T
est pins
Finger
guards
Plugs
Test probe (red)
Test probe (black)
Re
movable
test pin co
vers
When not covered
・着脱式テストピンキャップ装着時：CAT.III600V
・着脱式テストピンキャップ未装着時：CAT.II1000V
・When the removable test pin covers are mounted : CAT.III 600 V
・
When the removable test pin covers are not mounted: CAT.II 1000 V
DRAWING No SP21 18-1805 2040 2040
【4】指示の読み取り方
SCALE READING
①
②
③
④
⑤
⑥
⑦
DRAWING No SP21 18-1805 2040 2040
Function
Range
Multiplier
Range
Multiplier
1 k
10
1
DCV 30
DCV 3
DCV 0.3
ACV 300
ACV 30
DCA 0.3
DCA 30 m
DCV 600
ACV 600
DCA 60
1 k1000
10
1
0.1
0.01
0.001
1
0.1
0.001
0.1
10
10
1
DCV 120
DCV 12
ACV 120
ACV 12
DCV 30
DCV 6
F1
10
1
10
1
1
1
1
1
Please reading an indication right over pointer as possible.
A reading example in a figure pointer placce.
Range
scale No.
How to reading
Reading
10 ① 2310 230
DCV 120 V ④ 5.6×10 56 V
ACV 300 V ② 140×1 140 V
DCA 60 μA ③ 28×1 28 μA
1.5V
DRAWING No SP21 18-1805 2040 2040
【5】機能説明
DESCRIPUTION OF FUNCTIONS
5
-
1 つまみ・調整器
5
-
2 スタンドの使い方
リヤケース側にあるスタンドを図のようにして立ててご使用くだ
さい。
5-1 Knob and Adjuster
○Range selector knob
Turn this switch to turn on select the function and ranges.
○Zero position adjuster
This adjuter knob is turn and meter pointer is adjusted to 0 point
（scale left edge）.
○0 Ω・ Adjuster knob
It is used at the time of a resistance and ±DCV measurement.
・They short test pin at the time of Ω and this knob is turn and
pointer is adjusted to right edge（Ω scale of 0 place）of a scale.
Since pointer move automatically at the time of ±DCV, this
knob is turn and pointer is adjusted to center （ ± DCV scale of
0 place）of a scale.
5-2 How to Use the Stand
Please use the stand that there is on the side of rear case like a figure.
DRAWING No SP21 18-1805 2040 2040
●スタンドの使い方
How to use the stand
DRAWING No SP21 18-1805 2040 2040
【6】測定方法
6-1 始業点検
警 告
【6】MEASUREMENT PROCEDURE
6-1 Start-up Inspection
1Never use meter if the meter or test leads are damaged or
broken.
2Make sure that the test leads are not cut or otherwise damaged.
WARNING
DRAWING No SP21 18-1805 2040 2040
Main unit and test leads
damaged
START
Check continuity of
test leads and fuse.
Set the range selector
knob at ranges.
Short the red and
black test pins.
Stop using it and
have it repaired.
Pointer swing
at right
No problem.
Start measurement.
Replace the battery and fuse,
and starting to once more.
▲
▲
▲
▲
▲
▲
▲▲
▲
▲
Damaged
No damaged
No
Ye s
DRAWING No SP21 18-1805 2040 2040
6-2 レンジの設定方法（最適レンジの設定）
6-3 測定前の準備
6-2 How to Setup RangeSelection of a appropriate range
At the time of a voltage, a current measurement appropriate
range. When determining a measuring range, select such one
for higher voltage than the value to be measured as well as
where the pointer of a meter moves to a considerable extent.
However, select the maximam range and measure in case the
extent of value to be measured can not be predicated.
At the time of resistancemeasurement appropriate range.
The range that pointer does an indication is chosen in the
central vicinity.
6-3 Preparation for Measurement
Turn the zero position adjuster so that the pointer may align left
to zero position.
Select a range proper for the item to be measured set the
range selector knob accordingly.
DRAWING No SP21 18-1805 2040 2040
DRAWING No SP21 18-1805 2040 2040
6-4 電圧（V）測定
警 告
6-4-1 直流電圧（DCV ） 最大測定電圧DC 600 V
6-4 Voltage Measurement
1. Never apply an input signals exceeding the maximum rating
input value.
2. Be sure to disconnect the test pins from the circuit when
changing the function.
3. Select the maximam range and measure in case the extent of
value to be measured can not be predicted.
4. Always keep your fingers behind the finger guards on the
probe when making measurements.
WARNING
6-4-1
DCV Measurement（
）Maximum rating input value 600 VDC
1）Applications
Measures batteries and d.c. circuits.
2）Measuring ranges
0.3/3/12/30/120/600（6ranges）
DRAWING No SP21 18-1805 2040 2040
1.5V
1.5V
3）Measurement procedure
①Connect the black plug of the test lead to the − input
terminal and the red plug to the +input terminal.
②Set the range selector knob to an appropriate DCV range.
③Apply the black test pin to the negative potential side of the
circuit to measure and the red test pin to the positive potential
side.
④Read the move of the pointer by V.A scale.
⑤After measurement, remove the red and black test pins from
the circuit measured.
DRAWING No SP21 18-1805 2040 2040
6-4-2 直流電圧（±DCV ） 最大測定電圧 ±DC 30 V、6 V
6-4-2
DCV MeasurementMaximum rating input value 30 V, 6 VDC
1Applications
Direct current power supply circuit check of the equipment
which uses IC.
2Measuring ranges
6/30（2ranges）
3Measurement procedure
Connect the black plug of the test lead to the − input
terminal and the red plug to the +input terminal.
Set the range selector knob to an appropriate DCV range.
Turn the 0 adjuster so that the pointer may align
exactly to 0 by DCV scale.
Apply the black test pin to the negative potential side of the
circuit to measure and the red test pin to the positive potential
side.
Read the move of the pointer by DCV scale.
After measurement, remove the red and black test pins from
the circuit measured.
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