1-2 Warning Instructions for Safe Use● WARNING
Observe the instructions listed below in operating this equipment toavoid a fatal accident that may result in “electric shock” and”injuries.”
1. Do not use the tester in a power line exceeding 3.6 kVA.
2. Pay special attention when measuring the voltage of AC 33 V(46.7peak),DC 70 V or more to avoid injury.
3. Do not input signals that exceed the maximum rated input value.
4. Do not measure lines (such as motor lines) where inductive
voltages and surge voltages will occur as they may exceed themaximum overload input value.
5. Do not operate the meter when the main body or test lead isdamaged or broken.
6. Do not use the tester with its case removed.
7. Do not change function during measurement.
8. Confirm the function every time when making measurement.
9. Do not use the tester with wet hand.
10. Be sure to use the designated test leads.
11. Do not attempt repair or modification, except for replacement ofthe built-in battery.
12. Be sure to carry out startup checks and inspections at least once a year.
13. This tester is for indoor use.

AP33

MULTITESTERINSTRUCTION MANUALSANWA ELECTRIC INSTRUMENT CO., LTD.

1-3 Maximum Overload Protective Input

Dempa Bldg, 4-4 Sotokanda 2-Chome, Chiyoda-Ku,Tokyo, JAPANInput*1 Max. Overload Protective Input
Terminal
500 V
AC･DC 550 V or peak max770 V
250 V/50 V
AC･DC 500 V or peak max700 V
10 V
AC･DC 250 V or peak max350 V
ACV500 V
AC･DC 550 V or peak max770 V
250 V/50 V
AC･DC 500 V or peak max700 V＋,−
DCA
250 mA
AC･DC 10 V or peak max14 V
25 mA
AC･DC 3 V or peak max4.2 VΩ
×1 k
AC･DC 135 V or peak max189 V×10
AC･DC 15 V or peak max21 VBATT.
9 V/1.5 V
AC･DC 35 V or peak max49 V※1 (Tested by applying load 9 times for 0.5 sec. and once for 5 sec. every aboutone minute.)[1] Safety Information − Prior to use, read the following precautions carefully−

Thank you for selecting a SANWA Analog Multitester AP33.
Prior to use, please read this instruction manual thoroughly to ensure
correct and safe use. After reading it, please keep it together with thetester in a safe place for future reference.
Be sure to observe instructions marked with WARNING and CAUTION
to avoid accidents involving “shock hazards“, ”injuries and damages.”

1-1 Description of Warning Symbols

Symbols and their meaning used on product and Instruction Manual.
:Indicates very important instructions for safe use.
: WARNING identifies instructions to CAUTION identifies
information to avoid unsafe operation that may result in damages
to the equipment.

[2] Application and Features
2-1 Application

2-2 Features●A pocket size AMT with a built-in shock absorbing rubber.

[3] Panel Description

113

5-1 Maintenance and Inspection
1) Check the appearance for any damage caused by a drop or for any other reason.
2) Check the test lead for any damage or break.
If the tester is in one of the above conditions, stop using it and have it repaired.

5-2 Calibration and Inspection
Batt
er
y

4-5 Resistance (Ω) Measurement①Turn the range selector to adesired range of “ Ω ”. Short theResistor
red and black test pins and thenadjust 0 Ω with the 0 Ω adjuster.
②Connect the test pins to a resistoror circuit to measure.
③Read the measured value on theOHMS scale (green).
●An example of measurement: Check of wiring of resistors and cords.
WARNING: Never attempt to measure resistance of lines with voltage.

4-6 Battery Load Voltage (BATT) Measurement①A battery of 1.5 V and 9 V can be tested.
②Connect the red test pin to theBattery
positive side of the battery
and the black test pin to thenegative side.
③Judge the indication on the BAD?
GOOD scale.
CAUTION: The button battery cannot
be measured.
CAUTION: To prevent battery discharge, complete measurement quickly.

[5] Maintenance● WARNING
1. This section is very important for safety. Read and understandthe following instruction fully and maintain properly.
2. The instrument must be calibrated and inspected once a year tomaintain the safety and accuracy.

278
10911

5
6−2−08-1704 2040 6009

4-4 DC Current (DC mA) Measurement

14123
4

Contact the authorized agent of Sanwa Electric Instrument Co., Ltd. forcalibration and inspection of the equipment.

5-3 Storage

CAUTION

1. The body is sensitive to volatile solvents. Do not wipe it withthinner and alcohol.
2. The body is sensitive to heat. Do not place the tester near heatgenerating sources.
3. Do not keep the tester in places where the tester may be exposed
to vibration or where there is a risk of falling down.
4. Do not keep the tester in places where it is exposed to direct sunlight,
high temperature, low temperature, high humidity or condensation.
5. When the tester is not used for an extensive period of time, besure to remove internal batteries from it.

5-4 Replacement of the Battery and Fuse
Factory-preinstalled built-in battery
A battery for monitoring is preinstalled before shipping, therefore it may run
down sooner than the battery life specified in the instruction manual.
※The “battery for monitoring” is a battery to inspect the functions andspecifications of the product.
①Unfasten two screws on the backside of the body using ascrewdriver to remove the rear case.
②Remove the battery or fuse and replace it with new ones.
Battery: R03 (AAA battery) 1.5 V X 1
Fuse: φ5 X 20, 0.5 A/250 V③Put the rear case and fasten the screws.

[6] After-Sales Service
6-1 Warranty and Provision
Sanwa offers comprehensive warranty services to its end-users andto its product resellers. Under Sanwa's general warranty policy, each
instrument is warranted to be free from defects in workmanship ormaterial under normal use for the period of one (1) year from the dateof purchase.
This warranty policy is valid within the country of purchase only, andapplied only to the product purchased from Sanwa authorized agent ordistributor.
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 from theinstruction manual.

−6−[4] Measuring Procedure
4-1 Startup Check

Turn the 0-position adjuster to align the pointer with the 0 position on
the left end of the analog display.

● WARNING

1. Do not use the tester when its body or test leads aredamaged or broken.
2. Make sure that the test leads are not cut.
Start

Body and test
leads condition?

Removable
test pin covers

Test pins
Fingerguards

Broken②Short red and black
test leads.

Not broken
Check continuity oftest leads and fuse.
①Turn range selectorto Ω range.

This is a pocket type portable analog multitester designed for measuring smallcapacity power lines.
This tester is suitable for measuring voltages and testing continuity of household
appliances and measuring voltages of electric light circuits, batteries, etc.

1. Protector
2. Analog display
3. 0 Ω adjuster
4. Resistance range
5. Battery test range
6. DC current renge7. Test leads:DC
Ω:Resistance〜 :AC− :Negative＋ :Positive:Double insulation or reinforced insulation−5−

1. Vibration:
Do not place the tester on vehicles such as motorcycles as it is exposed tofrequent vibration that causes a tester failure.
2. Environment:
Do not store the tester for long hours in places where it is exposed to direct sunlight,
high temperature (over 60 ℃), high humidity (over 85 %) or where condensation occurs.
3. Electrification:
The tester cover has been treated by antistatic coating. Do not rub it with cloth strongly.
4. Maintenance:
When servicing the tester, wipe off dust and dirt lightly with a brush or cloth.
Do not use a solvent such as thinner and alcohol.
5. Caution:
Do not use the tester near places where strong electromagnetic waves
are generated or charged substances are present.

Function(Range)
DCV①Turn the range selector to adesired range of “DC mA”.
②Turn off the power switch of acircuit to measure to isolate theobject to be measured.
③Connect the black test pin to thenegative side of the circuit tomeasure and the red test pin tothe positive side.
WARNING: Connect the tester in series with the circuit.
④Read the measured value on the mA scale (black).
WARNING: Never apply voltage.

1-4 General Handling Precautions

Does pointer moveto right largely?

Stop using tester andhave it repaired.

NoYes
Proceed tomeasurement.

Replace fuse or battery
and repeat from ①.

4-2 DC Voltage (DC V) Measurement①Turn the range selector to a desired range of “DC V”.
②Connect the black test pin to “−” (negative, ground) of a circuit tomeasure and the red test pin to “＋” (positive, measuring point).
●Connect the tester in parallelwith the power supply (circuit).
③Read the measured value on theDC V scale (black).
● An example of measurement:
Carbattery
Voltages of commercial dry cells,
car batteries and button batteries.

4-3 AC Voltage (AC V) Measurement
When not covered

8. (OFF)
9. Range selector
10. DC voltage range
11. AC voltage range
12. Meter 0-position adjuster
13. Test pins
14. Removable test pin covers①Turn the range selector to a desiredrange of “AC V”.
②Regardless of ＋ /− polarity, connect
the test pins to a circuit to measure.
● Connect the tester in parallelwith the power supply.
③Read the measured value on theAC V scale (red).
●An example of measurement:
Voltages of household outlets● WARNING

A measurement error will become larger when a voltage of waveform
other than sine wave AC is measured.

−4−−3−

2. A failure due to inadequate repair or modification by people otherthan 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.

6-2 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 6-1 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 isthe repair warranty period. Please note, however, if suchfunctional parts become unavailable for reasons of discontinuationof 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
the product in a box that is larger than the product 5 times or morein volume and fill cushion materials fully and then clearly mark“Repair Product Enclosed” on the box surface. The cost ofsending and returning the product shall be borne by the customer.

[7] Specifications

Item
Meter
Built-in fuse
Built-in battery
Operating temperature &humidity
Storage temperature & Humidity
Operating environment
Dimensions
MassStandard accessory

Specifications
Moving-coil, pivot type
0.5 A / 250 V, φ5 × 20 mm fast acting fuse
R03 (AAA battery) 1.5 V × 1
5 −40 ℃, 80 % RH or below, no condensation.
80 % RH (max.) at 5 〜 31 ℃ and linear decrease from
80 % RH to 50 % RH at over 31 ℃ and up to 40 ℃.
−10 − 50 ℃, 70 % RH MAX. No condensation.
Max. 2000 m, Pollution degreeⅡ, indoor use
126(H) × 87(W) × 30(D) mmApprox. 185 g
Instruction manual

Guaranteed accuracy range: 23 ℃ ±2 ℃, 75 % RH max.
Measuring Range
Accuracy
DC voltage 10/50/250/500 V（2 kΩ/V）±5 % of full scale
AC voltage 50/250/500 V（2 kΩ/V）DC current 25 m/250 mA
Ω×10（10 k）
Open voltage±3 % of scale length（OHMS） ×1 k（1 M）
1.5 V
1.5 V load approx 14 Ω
BATT−
9 V load approx 420 Ω
The specifications are subject to change without notice.

6-3 SANWA web site
http://www.sanwa-meter.co.jp
E-mail: exp_sales@sanwa-meter.co.jp−7−−8−