PC20
デジタルマルチメータ

DIGITAL MULTIMETER

取扱説明書

INSTRUCTION MANUALCONTENTS【1】SAFETY PRECAUTIONS:Before use, read the following safety precautions
1-1 Explanation of Warning Symbols...................................... 026
1-2 Warning Instruction for safe use....................................... 026
1-3 Maximum Overload Protection Input................................ 027【2】APPLICATION AND FEATURES
2-1 Application........................................................................ 028
2-2 Features............................................................................ 028【3】NAME OF COMPONENT UNITS
3-1 Display.............................................................................. 028
3-2 Multimeter, Test leads...................................................... 029【4】Description of Functions
4-1 Switch and description..................................................... 030
4-2 Connection with the personal computer.......................... 031
4-3 Use of the AC adapter...................................................... 032【5】MEASUREMENT PROCEDURE
5-1 Start-up Inspection........................................................... 033
5-2 Voltage Measurement...................................................... 034
5-3 Resistance Measurement (Ω).......................................... 035
5-4 Testing Diode ( )............................................................ 035
5-5 Checking Continuity ( )................................................... 036
5-6 Capacity Measurement ( )............................................ 037
5-7 Current Measurement (μA・mA・A).............................. 038
5-7-1 Current Measurement (μA・mA)............................. 038
5-7-2 Current Measurement (A).......................................... 039
5-8 How to use optional products.......................................... 040
5-8-1 Temperature probe (T-300PC)................................... 040【6】MAINTENANCE
6-1 Maintenance and inspection............................................ 041
6-2 Calibration......................................................................... 041
6-3 How to Replace Battery and Fuse.................................... 041
6-4 Cleaning and Storage....................................................... 042【7】SPECIFICATIONS
7-1 Measurement Range and Accuracy................................. 043
7-2 General Specifications...................................................... 044
7-3 Optional accessories General Specifications.................... 045【8】After-Sales Service
8-1 Warranty and Provision..................................................... 045
8-2 Repair............................................................................... 046
8-3 SANWA web site.............................................................. 046−  25  −

【1】  SAFETY PRECAUTIONS : Before use, read the following safety precautions
This instruction manual explains how to use your multimeter PC20
safely. Before use, please read this manual thoroughly. After reading it,
keep it together with the product for reference to it when necessary.
Using the product in a manner not specified in this manual may
cause damage to the protection function of the product.
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 tothe product is as follows.
: Very important instruction for safe use.
・The warning messages are intended to prevent accidents tooperating personnel such as burn and electrical shock.
・The caution messages are intended to prevent damage tothe instrument.
: Dangerous voltage (Take care not to get an electric shock involtage measurement.): DC〜 : ACΩ : Resistance: Buzzer〜 : Diode〜 : Ground〜 : Fuse− : Minus＋ : Plus: Double insulation
1-2 Warning Instruction for safe use
WARNINGTo ensure that the meter is used safely, Be sure to observe
the instruction when using the instrument.
01. Never use meter on the electric circuit that exceed 6 kVA.
02. Pay special attention when measuring the voltage of AC 33
Vrms (46.7 Vpeak) or DC 70 V or more to avoid injury. Alsouse insulating protective equipment as required.
03. Never apply an input signals exceeding the maximum rating input value.
04. Never use meter for measuring the line connected withequipment (i.e. motors) that generates induced or surge
voltage since it may exceed the maximum allowable voltage.
05. Never use meter if the meter or test leads are damaged or broken.
06. Never use uncased meter.
−  26  −

07. Be sure to use a fuse of the specified rating or type. Never use asubstitute of the fuse or never make a short circuit of the fuse.
08. Always keep your fingers behind the finger guards on theprobe when making measurements.
09. Be sure to disconnect the test pins from the circuit whenchanging the function or range.
10. Never use meter with wet hands or in a damp environment.
11. Never open tester case except when replacing batteries orfuse. Do not attempt any alteration of original specifications.
12. To ensure safety and maintain accuracy, calibrate and checkthe tester at least once a year.
13. Indoor use.
CAUTION
1. Correct maesurement may not be performed when using themeter in the ferromagnetic / intense electric field such asplaces near a transformer, a high-current circuit, and a radio.
2. The meter may malfunction or correct measurement may not
be performed when measuring special waveform such as thatof the inverter circuit.
1-3 Maximum Overload Protection Input
Function

Input

Maximum rating
input value＊
DC 1000 V
COM＊
AC 750 V(−)：
Ω／ ／● Voltage and current：
input prohibited●：
DC ／ ACV, Ω, ● DC, AC
400・4000μA
4000μA,●μA, mA DC, AC
DC ／ AC40・400 mA （＋）
400 mA

DCV
ACV

DC ／ AC
4・10 A

COM（−）
DC, AC：
10 A
4・10 A

Maximum overload
protection value
DC 1000 V, AC 750 Vor peak max. 1000 V
DC 500 V, AC 500 Vor peak max.700 V
0.5 A/250 V Fuseprotection
12.5 A/250 V Fuseprotection＊ The maximum rating input voltage in the time that connected to the personal
computer does to DC 300 V, AC 220 V (peak max. 310 V)＊ The maximum rating input voltage in the time that used the AC adapter does to
DC 300 V, AC 220 V (peak max. 310 V)−  27  −

【2】APPLICATION AND FEATURES
2-1 Application
This instrument is portable multimeter designated for measurementof weak current circuit.
2-2 Features
・4000 counts disply.
・With the capacity measurement function.
・The current function is the semi auto ranges.
・KB-USB20 interface (option)
・Main unit case and the circuit board is made of fire retarding
materials.

【3】NAME OF COMPONENT UNITS
3-1 Display
Checking countinuity display

Auto mode display

RS232C action
display

Data hold display

Testing diodedisplay

Relativedisplay

Battery dischage
warning display

DC mearsurement display
Measurement
unit display

AC measurement display
Minus polarity display
for numeral data
Decimal point
Numeral data display−  28  −

〔Fig 1〕

3-2 Multimeter, Test leads
Holster
Test lead
Fix

Range holdswitchDisplay
Data holdswitchPower switch
and function
switchSelectswitchLED lamp

Safety cover

AC adaptor
input terminal(With safety cap)
COM − input
terminal

4･10 A input
terminal
V, Ω, ● , ● , ● ,μA, mA＋ input terminal

21

Test lead (TL-21a)〔Fig 2〕−  29  −

Stand

【4】Description of Functions
4-1 Switch and description○ Power switch and function switch
Turn this switch to turn on and off the power and to select thefunctions of V, Ω/ ● / ● , ● , μA, mA, A.
○ Range hold switch
Pressing this switch once sets the manual mode and the range isfixed. ("AUTO" on the display disappears)
Once the manual mode is set, the range moves each time thisswitch is pressed. Checking the unit on the display and the placeof the decimal point, select a desired range. To return to the automode, keep pressing this switch until "AUTO" on the display
appears.
○ Data hold switch
When this switch is pressed, the data display at that time
continues ("DH" lights on the display). When the measuring inputchanges, the display will not change.
When this switch is pressed again, the hold status is canceled you
can return to the measuring status. ("DH" on the display disappears.)○Select switch
When thisV ●／〜● → 〜 → ● → 〜
switch is
Ω → ● → ● → ΩΩ／●／●pressed ( → ),(See 5-6 Capacity Measurement)●
the each
400・4000μA ●／〜modes change 40・400 mA ●／〜 ● → 〜 → ● → 〜
as follows.
4・10 A ●／〜WARNING
Do not change over the function switch with a voltage applied
to the measuring terminals.
● The PC20 does not have the auto power-off function.
When measurement is finished, be sure to return the function
switch to the OFF position.

−  30  −

4-2 Connection with the personal computer
WARNING
Maximum input voltage in the event that is connect withcomputer is DC 300 V, AC 220 V (AC voltage is regulated byrms value of sinusoidal wave. Peak max. 310 V)
The multimeter is capable of DMM data communication using theRS232C / USB interface. When the multimeter on which the optional
USB optical communication unit (KB-USB20) is mounted is connected
to a PC, the multimeter will output data to the PC. It is required topurchase the optional PC link software (PC Link7) for this operation. For
details, refer to the Help for the optional PC link software (PC Link7).
<Connection of the multimeter and cable>① The stand that is in the reverse side of a multimeter is opened.
② Attach the box part of cable to the multimeter.
③ The opposite side of cable is connected to the computer.
④ Please use and please set up the stand when use it.
Cable
box

①
④

②

Nut thread〔Fig 3〕● Data transfer speed to PC through KB-USB20 cable
Data transfer speed
Function
Remarks
except following functions
Apporox. 0.5 s/times
		
50 nF max. Apporox. 1.4 s/times
Data transfer speed		〜 0500 nF Apporox. 1.7 s/times
is changed foreach range when		
〜 005 μF Apporox. 2 s/times
capacitance		〜 050 μF Apporox. 5 s/times
measurement.
		〜 100 μF Apporox. 9 s/times
Ω, ●Apporox. 0.7 s/times
Note:
DMM stops Data transfer to PC while range is shifting.

−  31  −

4-3 Use of the AC adapter (AD-71AC-2)
WARNING
1. Maximum input voltage in the event that is connect with AC
adapter is DC 300 V, AC 220 V (AC voltage is regulated by rms
value of sinusoidal wave. Peak max. 310 V)
2. Do not use the AC adapter other than designated devices.
3. Do not use the AC adapter other than AC 100 V for the home.
<Connection of the AC adapter>① Pull up the safety cap from the AC adaptor input terminal of themultimeter.
② The plug of the AC adapter into the terminal of the multimeter.
③ The AC adapter into the outlet for the home (AC 100 V).
④ Turning the function switch of the multimeter and turn on the
power supply.

Outlet③④①

AC adapter②③’〔Fig 4〕●The incorporated battery and the AC adapter may be used together.
Note, however, when the PC20 is used with the AC adapter only,
the buzzer will not sound with such functions as the continuity
check ( ●).
●Insert the plug perpendicularly.
●Be sure to insert the plug to the position where the LED forconfirmation of AC adapter connection illuminates.

−  32  −

【5】MEASUREMENT PROCEDURE
5-1 Start-up Inspection
WARNING
1. Never use meter if the meter or test leads are damaged or
broken.
2. Make sure that the test leads are not cut or otherwise damaged.
START

Main unit andtest leads
damaged?
No damageCheck continuity oftest leads.
①Connect the test leadof black plug to theCOM − terminal.
② Connect the test
lead of red plug tothe ＋ terminal.
③ Set the function
switch at Ω / /and sele c t the
select switch at .

DamagedStop using it andhave it repaired.
④Short the red andblack test pins.

Display shows
000.0 〜 001.0?
Buzzer beeps?

No

Yes
No problem.
Start measurement.

④③①〔Fig 5〕−  33  −②

5-2 Voltage Measurement Maximum rating input value 1000 VDC or 750 VAC
WARNING
1. Never apply an input signals exceeding the maximum rating
input value.
2. Be sure to disconnect the test pins from the circuit whenchanging the function.
3. Always keep your fingers behind the finger guards on the probe
when making measurements.
1) Applications
DCV : Measures batteries and DC circuits.
ACV : Measures sine-wave AC voltage as lighting voltages.
2) Measuring ranges
DCV : 400 mV 〜 1000 V (5 ranges)
ACV : 4 V 〜 750 V (4 ranges)
3) Measurement procedure (See Fig 6 or 7, page 10)① Connect the black plug of the test lead to the COM − input
terminal and the red plug to the ＋ input terminal.
② Set the function switch at "V / 〜 " function.
③ Select the select switch at " " (DC) or " 〜 " (AC).
④ 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.
⑤ Read the value on the display.
⑥ After measurement, remove the red and black test pins fromthe circuit measured.
⑦ Turn the function switch to the position of OFF.
● In the AC 4 V range, a figure of about 3~9 counts will stay on even
if no input signal is present. But it is not malfunction.
● In the manual mode of the ACV function, the PC20 can be set tothe 400 mV range and shows an approximate value. But its
accuracy is not guaranteed.
● Since this instrument employs the means value system for its
AC voltage measurement circuit, AC waveform other than sine
wave may cause error.

−  34  −

5-3 Resistance Measurement (Ω)
WARNING
Never apply voltage to the input terminals.
1) Application
Resistance of resistors and circuits are measured.
2) Measuring ranges
400 Ω 〜 40 MΩ (6 ranges)
3) Measurement procedure (See Fig 8, page 11)① Connect the black plug of the test lead to the COM − input
terminal and the red plug to the ＋ input terminal.
② Set the function switch at "Ω/ / " function.
③ Select the select switch at "Ω" (MΩ).
④ Apply the black and red test pin to measured circuit.
⑤ Read the value on the display.
⑥ After measurement, remove the red and black test pins from thecircuit measured.
⑦ Turn the function switch to the position of OFF.
● If measurement is likely to be influenced by noise, shield the object
to measure with negative potential (test lead black).
● If a test pin is touched by a finger during measurement,
measurement will be influenced by the resistance in the humanbody to result in measurement error.
● The input terminals release voltage is about 0.4 V.
● The reading may vary because of external inductance whenmeasuring high resistance value.
5-4 Testing Diode ()

WARNING
Never apply voltage to the input terminals.
1) Application
The quality of diodes is tested.
2) Measurement procedure (See Fig 9, page 12)① Connect the black plug of the test lead to the COM − input
terminal and the red plug to the ＋ input terminal.
② Set the function switch at "Ω/ / " function.
−  35  −

③ Select the select switch at "".
④ Apply the black test pin to the cathode of the diode and the redtest pin to the anode.
⑤ Make sure that the display shows a diode forward voltage drop.
⑥ Replace the red and black test pins, make sure that the display
is the same as that when the test leads are released.
⑦ After measurement, release the red and black test pins from theobject measured.
⑧ Turn the function switch to the position of OFF.
Judgement
When the items ⑤ and ⑥ are normal, the diode is good.
● The input terminals release voltage is about 1.5 V.
● If the diode forward voltage exceeds the release voltage, O.L isdisplayed even in a test in the forward direction.
5-5 Checking Continuity ()
WARNING

Never apply voltage to the input terminals.
1) Application
Checking the continuity of wiring and selecting wires.
2) Measurement procedure (See Fig 10, page 13)① Connect the black plug of the test lead to the COM − input
terminal and the red plug to the ＋ input terminal.
② Set the function switch at "Ω/ / " function.
③ Select the select switch at " " .
④ Apply the red and black test pins to a circuit or conductor to measure.
⑤ The continuity can be judged by whether the buzzer sounds or not.
⑥ After measurement, release the red and black test pins from theobject measured.
⑦ Turn the function switch to the position of OFF.
● The buzzer sounds when the resistance in a circuit to measure isless than 10 〜 120 Ω.
● Even if the buzzer does not sound, a resistance value up to 10 〜
120 Ω will be displayed.
● The input terminals release voltage is about 0.4 V.
● The buzzer will not sound if the incorporated battery is removed form thePC20 and it is operated with the power supply of the AC adapter only.
−  36  −

● When a resistance value is in a range of 10 〜 120 Ω, noise will
be mixed in the buzzer sound. But it is not malfunction.
5-6 Capacity Measurement ()

WARNING
1. Never apply voltage to the input terminals.
2. Be sure to discharge the capacitor prior to measurement.
1) Application
Measures capacitance of capacity.
2) Measuring ranges
50 nF* 〜 100 μF (5 ranges)＊ 1000 nF ＝ 1μF
3) Measurement procedure (See Fig 11, page 14)① Connect the black plug of the test lead to the COM − input
terminal and the red test lead to the ＋ input terminal.
② Set the function switch at " " function.
③ Press the SELECT switch to make the display show 00.00 nF.
(The "REL" mark illuminates in the upper right area of the display.)[CAUTION] If the SELECT switch is pressed immediately after thefunction switch has been set at " ", the display may be locked, making
measurement impossible. Should this be the case, set the function
switch to a different range once, then back to " " and wait for morethan 2 seconds before pressing the SELECT switch again.

④ Apply the red and black test pins to capacitor.
⑤ Read the value on the display.
⑥ After measurement, release the red and black test pins from theobject measured.
⑦ Turn the function switch to the position of OFF.
● The " " function can be set to the auto range, but not to themanual range.
● In 5 nF and 50 nF ranges, large value is left, especially when
disconnecting measuring terminals. This is not malfuction.
● For measurement of 100 nF (0.1μF) or below, the display will
not stabilize due to the influence of ambient noise and floating
capacity. It is therefore recommended that an object to measure(capacitor) be directly connected between the ( ＋ ) and ( − )measuring terminals of the PC20.
● As the capacitance increases, the measuring time becomes longer.
Example: 2 to 4 seconds at 10μF
5 to 8 seconds at 50μF
Example: 13 to 16 seconds at 100μF−  37  −

5-7 Current Measurement (μA, mA, A)
WARNING
1. Never apply voltage to the input terminals.
2. Be sure to make a series connection via load.
(please see to above drawing)
3. Do not apply an input exceeding the maximum rated current
to the input terminals.
Power

Power

Load

Load

〔×〕
Wrong connection〔○〕
Right connection〔Fig 6〕

5-7-1 Current Measurement (μA, mA)
Maximum rating input value DC/AC 4000 μA・400 mA1) Applications
Current in DC and AC circuit is measured.
2) Measuring ranges
DCA:400･4000μA, 40･400 mA (4 ranges)
ACA:400･4000μA, 40･400 mA (4 ranges)
3) Measurement procedure (See Fig 13, page 16)① Connect the black plug of the test lead to the COM − input
terminal and the red plug to the ＋ input terminal.
② Set the function switch at "400･4000μA" or "40･400 mA" function.
③ Select the select switch at " " (DC) or " 〜 " (AC).
④ 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.
−  38  −

⑤ Read the value on the display.
⑥ After measurement, remove the red and black test pins fromthe circuit measured.
⑦ Turn the function switch to the position of OFF.
● If the display will not change when an input signal is applied(measurement is not possible), a probable cause is a blown fuse.
● Since this instrument employs the means value system for its
AC voltage measurement circuit, AC waveform other than sine
wave may cause error.
5-7-2 Current Measurement (A) Maximum rating input value DC/AC 10 A
WARNING
1. Never apply voltage to the input terminals.
2. Finish measurement within 45 seconds to prevent heatgeneration.
3. Provide intervals 2 minutes or longer between measurements
to prevent heat generation. (Continuous measurement:max 5 A)
4. Perform measurement with the leads kept straight to prevent
overheat.
1) Applications
Current in DC and AC circuit is measured.
2) Measuring ranges
DCA: 4･10 A (2 ranges), ACA: 4･10 A (2 ranges)
3) Measurement procedure (See Fig 14, page 17)① Slide the safety cover of the PC20 to the left and insert the redplug of the test leads to the 4･10 A measuring terminal and theblack plug to the COM ( − ) terminal.
② Set the function switch at "4･10 A / 〜 " function.
③ Select the select switch at " " (DC) or " 〜 " (AC).
④ Apply the black test pin to the negative potential side of thecircuit to measure and the red test pin to the positive potentialside.
⑤ Read the value on the display.
⑥ After measurement, remove the red and black test pins fromthe circuit measured.
⑦ Turn the function switch to the position of OFF.

−  39  −

● If the display will not change when an input signal is applied(measurement is not possible), a probable cause is a blown fuse.
● Since this instrument employs the means value system for its
AC voltage measurement circuit, AC waveform other than sine
wave may cause error.
5-8 How to use optional products
WARNING
Never apply an input signals exceeding the maximum rating
input value of optional products.
5-8-1 Temperature probe (T-300PC) Measurement range 300 ˚C from -50 ˚C<Measurement procedure> (See Fig 15, page 18)① Connect the black plug to COM − input terminal and the redplug to ＋ input terminal.
② Set the function switch at "Ω/ / " function.
③ Select the select switch at "Ω" and set the 4 kΩ range with therange hold switch.
④ Apply the sensor to an object to measure.
⑤ Read the value on the display.
(When measuring temperature, please neglect the value of kΩ
indicated on LCD of multimeter. The exact value of measured
teperature is shown only on the window of PCLink.)⑥ After measurement, release the sensor from the object measured.
⑦ Turn the function switch to the position of OFF.

−  40  −

【6】MAINTENANCEWARNING
1. This section is very important for safety. Read and understand thefollowing instruction fully and maintain your instrument properly.
2. The instrument must be calibrated and inspected at least oncea year to maintain the safety and accuracy.
6-1 Maintenance and inspection
1. Appearance
・Is the appearance not damaged by falling?
2. Test leads
・Is the cord of the test leads not damaged?
・Is the core wire not exposed at any place of the test leads?
If your instrument falls in any of the above items, do not use it andhave it repaired or replace it with a new one.
● Make sure that the test leads are not cut, referring to the section.
6-2 Calibration
The calibration and inspection may be conducted by the dealer.
For more information, please contact the dealer.
6-3 How to Replace Battery and Fuse (See Fig 16, page 20)
WARNING
1. If the rear case is removed with input applied to the input
terminals, you may get electrical shock. Before starting the work,
always make ure that no inputs is applied.
2. Be sure to use the fuse is same rating so as to ensure safety
and performance of tester.
3. When operator remove the rear case, do not touch the internal
parts or wire with hand.
<How to replace the battery>① Remove the holster.
② Remove the rear case screw with a screwdriver.
③ Remove the rear case.
−  41  −

④ Take out the battery and replace it with a new one.
⑤ Attach the rear case and fix it with the the screw.
⑥ Attach the holster.
* Do not use mix new and old batteries together.
<How to replace the fuse>
Fuse of the Specified Rating and Type
(Fuse with arc-extinguishing agent)
0.5 A /250 V φ5×20 mm Blowout capacity:1500 A
12.5 A /250 V φ6.3×32 mm Blowout capacity:125 A① Remove the holster.
② Remove the rear case screw with a screwdriver.
③ Remove the rear case.
④ Pull out the fuse out of holder on the circuit board and replace it.
⑤ Put back rear case where it was and tighten the screw.
⑥ Check and see whether or not indications of respective ranges
are normal.
⑦ Attach the holster.
6-4 Cleaning and Storage
CAUTION
1. The panel and the case are not resistant to volatile solvent andmust not be cleaned with thinner or alcohol.
For cleaning, use dry, soft cloth and wipe it lightly.
2. The panel and the case are not resistant to heat. Do not place theinstrument near heat-generating devices (such as a soldering iron).
3. Do not store the instrument in a place where it may be subjected
to vibration or from where it may fall.
4. For storing the instrument, avoid hot, cold or humid places orplaces under direct sunlight or where condensation is anticipated.
Following the above instructions, store the instrument in goodenvironment.

−  42  −

【7】SPECIFICATIONS
7-1 Measurement Range and Accuracy
Accuracy assurance range : 23±5 ˚C 80 %RH MAX. No condensaition.
Function

DCV

ACV

DCA

ACA

Ω

Temp
˚C

Input ResistanceRange
Accuracy
Remarks≧ 100 MΩ
400.0 mV±(0.5 %rdg+2 dgt)
Approx. 11 MΩ
4.000 V
40.00 V±(0.9 %rdg+2 dgt)
Approx. 10 MΩ
400.0 V
1000 V±(1.0 %rdg+2 dgt)
Approx. 11 MΩ ±(1.2 %rdg+9 dgt)
4.000 V
Accuracy in the cace of sin
40.00 V±(1.2 %rdg+5 dgt) wave
Approx. 10 MΩ
400.0 V40 〜 500 Hz
750 V±(1.5 %rdg+5 dgt)
400.0 μA,
Approx. 100Ω
4000 μA±(1.5 %rdg+2 dgt) 10 A range :40.00 mA,
Approx. 1Ω
Continuous measurement :400.0 mA
max 5 A
4.000 A,
Approx. 0.01Ω ±(2.0 %rdg+2 dgt)
10.00 A
400.0 μA,
Accuracy in the cace of sin
Approx. 100Ω
4000 μA
wave±(1.8 %rdg+5 dgt)
40.00 mA,
40 〜 500 Hz
Approx. 1Ω
10 A range :400.0 mA
Continuous measurement :4.000 A,
Approx. 0.01Ω ±(2.5 %rdg+5 dgt)
max 5 A
10.00 A
400.0 Ω±(1.5 %rdg+5 dgt)
4.000 kΩ40.00 kΩ±(1.2 %rdg+4 dgt)
Open voltage Apporox. 0.4 V
400.0 kΩ
4.000 MΩ±(1.8 %rdg+2 dgt)
40.00 MΩ±(3.0 %rdg+2 dgt)
Open voltage Approx
Buzzer sound at approx. 10 〜 120Ω max.
Open voltage Approx 1.5 V
50.00 nF
500.0 nF
5.000 μF±(5.0 %rdg+6 dgt) Auto range only
50.00 μF
100.0 μF

− 50 〜 300 ˚C

rdg：reading±1.5 %rdg±4.8 ˚C Option

dgt：digits

CAUTION:
If there is presence of strong magnetic field generated by conductor fed large
current, motors or strong radio wave, a measurement may not be accurate.
Specifications and external appearance of the product describedabove may be revised for modification without prior notice.
−  43  −

7-2 General Specifications
Measuring Method : △ Σmethod
Display: 4000 counts
Range selection : Auto and manual ranges
Over display: "O.L" is displayed		 (except DC/AC 10 A, DC 1000 V, AC 750 V ranges)
Polarity: Automatic selection (only " − " is displayed)
Battery discharge display: If the internal battery has been consumed and thevoltage drops, the display shows.
Sampling rate : Approx. 3 times/sec.
Accuracy assurance temperature /humidity range: 23±5 ˚C 80 %RH max. No condensation.
Operating temperature /humidity range: 0 〜 40 ˚C 80 %RH max. No condensation.
Storage temperature /humidity range: -10 〜 50 ˚C 70 %RH max. No condensation.
Environmental condition: Operating altitude <2000 m, pollution degree ⅡPower supply : R6 (IEC) dry battery, 2 pieces
Power consumption : Approx. 7 mW TPY. (at DCV)
Battery life
: Approx. 150 hours at DCVFuse protection : 0.5 A/250 V Fast acting fuse (φ5×20 mm)
		Blowout capacity, 1500 A
Fuse with
arc-extinguishing 12.5 A/250 V Fast acting fuse (φ6.3×32 mm)
		
agent
		
Blowout capacity, 125 A
Dimension and Mass : 167(H) × 90(W) × 48(D)mm
		 Approx. 330 g (holster attached.)
Accessories: Instruction manual, Test leads (TL-21a) ,: Holster (H-70)()−  44  −

7-3 Optional accessories
・Temperature probe: T-300PC
・Soft case
: C-SP・AC Adaptor: AD-71AC-2 (Input AC 100 V)
・USB optical communication unit : KB-USB20
・PC link software: PC Link7
・Alligator clip
: CL-14【8】After-Sales Service
8-1 Warranty and Provision
Sanwa offers comprehensive warranty services to its end-users and to its
product resellers. Under Sanwa's general warranty policy, each instrument
is warranted to be free from defects in workmanship or material undernormal use for the period of one (1) year from the date of purchase.
This warranty policy is valid within the country of purchase only, andapplied only to the product purchased from Sanwa authorized agent
or distributor.
Sanwa reserves the right to inspect all warranty claims to determine
the extent to which the warranty policy shall apply. This warranty shallnot apply to fuses, disposables batteries, or any product or parts,
which have been subject to one of the following causes:
1. A failure due to improper handling or use that deviates fromthe instruction manual.
2. A failure due to inadequate repair or modification by people
other than Sanwa service personnel.
3. A failure due to causes not attributable to this product such as
fire, flood and other natural disaster.
4. Non-operation due to a discharged battery.
5. A failure or damage due to transportation, relocation or
dropping after the purchase.

−  45  −

8-2 Repair
Customers are asked to provide the following information whenrequesting services:
1. Customer name, address, and contact information
2. Description of problem
3. Description of product configuration
4. Model Number
5. Product Serial Number
6. Proof of Date-of-Purchase
7. Where you purchased the product1) Prior to requesting repair,please check the following:
Capacity of the built-in battery, polarity of installation anddiscontinuity of the test leads.
2) Repair during the warranty period:
The failed meter will be repaired in accordance with the conditions
stipulated in 8-1 Warranty and Provision.
3) Repair after the warranty period has expired:
In some cases, repair and transportation cost may become higher
than the price of the product. Please contact Sanwa authorized
agent / service provider in advance.
The minimum retention period of service functional parts is 6 years
after the discontinuation of manufacture. This retention period is therepair warranty period. Please note, however, if such functional parts
become unavailable for reasons of discontinuation of manufacture,etc., the retention period may become shorter accordingly.
4) Precautions when sending the product to be repaired:
To ensure the safety of the product during transportation, place theproduct in a box that is larger than the product 5 times or more involume and fill cushion materials fully and then clearly mark ”Repair
Product Enclosed” on the box surface. The cost of sending andreturning the product shall be borne by the customer.
8-3 SANWA web site
https://www.sanwa-meter.co.jp
E-mail: exp_sales@sanwa-meter.co.jp−  46  −

保証書
ご氏名

様

ご住所

型

名

PC20

製造No.
この製品は厳密なる品質管理を経てお届けするものです。
本保証書は所定項目をご記入の上保管していただき、アフターサービスの際ご提出ください。
※本保証書は再発行はいたしませんので大切に保管してください。

TEL
保証期間
ご購入日
年
月より 3 年間
（製品の確度については1年間）

本社=東京都千代田区外神田2－4－4・電波ビル
郵便番号=101-0021・電話=東京（03）3253－4871
（代）

保証規定
保証期間内に正常な使用状態のもとで、万一故障が発生した場合には無償で修理いたします。但し、保証期間内であっても下記の場合には保証の対象外とさせていただきます。
記
1. 取扱説明書に基づかない不適当な取扱い（保管状態を含む）または使用による故障
2. 弊社以外による不当な修理や改造に起因する故障
3. 天災などの不可抗力による故障や損傷、および故障や損傷の原因が本計器以外の事由による場合
4. お買上げ後の輸送、移動、落下などによる故障および損傷
5. その他、弊社の責任ではないとみなされる故障
6. 本保証書は、日本国内において有効です。
This warranty is valid only within Japan.
以上
年

月

日

修理内容をご記入ください。

※無償の認定は当社において行わせていただきます。

本社=東京都千代田区外神田2－4－4・電波ビル
郵便番号 =101-0021・電話 =東京（03）3253－4871㈹大阪営業所=大阪市浪速区恵美須西2－7－2
郵便番号 = 556-0003・電話= 大阪（06）6631－7361㈹Dempa Bldg., 4-4 Sotokanda 2-Chome, Chiyoda-ku, Tokyo, Japan

植物油インキを使用しています。

20-2104 2040 2040