Sanwa ACS101 Manual

Sanwa Multimeter ACS101

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[1]

SAFETY PRECAUTIONS　Be sure to read the following before use.

Thank you for purchasing our AC/DC Clamp Sensor model ACS101.

Before use, please read this manual thoroughly to ensure correct and safe

use. 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 instructions given

under the headings of “ WARNING” and “ CAUTION” must be followed to

prevent accidental burn and electric shock.

1-1 Explanation of Warning Symbols

The meanings of the symbols used in this manual and attached to the product

are as follows:

: Very important instructions for safe use.

• The warning messages are intended to prevent accidents to operating

personnel such as burn and electric shock.

• The caution messages are intended to prevent incorrect handling which

may damage the product.

Explanation of warning symbols

: Refer to Instruction Manual before use

: Potential of connection to a power line in live status

: Double or reinforced insulation

: Direct current (DC)

: Alternating current (AC) ● ＋ − : Center position, polarity indications

: Measured current direction

1-2 Warning Instructions for Safe Use

To avoid physical injury such as burns or electric shock, be sure to observe

the following instructions when using this instrument.

1. This instrument is a clamp sensor for low voltage applications. Do not

use it with an electric circuit exceeding 600 V.

Never input signals exceeding the maximum rated input value (see 1-3).

Never use this instrument if it is damaged or if the output cable is damaged.

4. Do not use this instrument while the case or battery compartment cover

is removed.

5. Never use the instrument when it is wet or when your hands are wet.

6. Do not attempt to repair or modify this instrument, except for battery

replacement.

Perform start-up inspection and inspect the instrument at least once a year.

8. This instrument is for indoor use only.

9. When measuring equipment containing a hazardous charged part, it is

required to wear protective gear for prevention of accidents. For details,

please follow your local and national safety standards.

10. Do not use the instrument in a method other than specified. Otherwise,

the protection function may be spoiled.

1-3 Overload Protection Input

Input Maximum rated input

Maximum overload protection input

Clamp sensor 600 A AC/DC 600 A AC/DC

[2] APPLICATIONS AND FEATURES

2-1 Applications

This instrument is a clamp sensor that measures 0.5 to 600 A AC current and

DC current.

It can be used to measure the current of electric circuits, electric equipment,

and electric facilities with low voltage of 600 V or less.

2-2 Features

• Designed for both AC and DC currents

• Full-scale 600 mV AC/DC voltage output

• Measured values displayed on a connected digital multimeter

• Provided with an auto power off function (approx. 20 min.)

* Can be overridden.

• Button-operated DCA zero function

Measurement Category (Overload Category)

CAT. II : Line on the primary side of equipment with power cord to be

connected to the receptacle.

CAT. III: Line from the primary side or branch of equipment which directly

takes in electricity from a distribution board to the receptacle.

CAT. IV: Line from the service conductor to the distribution board.

[3] NAMES OF PARTS

①Clamp type current sensor (CT)

②Cen t e r i n g m ar k s f o r c u rre n t

measurement / Polarity marks for

DC (DCA) measurement

③Barrier

④Trigger

⑤Power switch / Range selector

switch

⑥Output terminals

⑦Auto power off (APO) button

⑧

Zero adjustment ( A ZERO) button

⑨POWER lamp (red)

⑩Auto power off (APO) lamp (green)

[4] DESCRIPTION OF FUNCTIONS

4-1 Power Switch / Range Selector Switch

Turns the power on and off. Is also used to select the measurement range.

4-2 POWER Lamp (Red)

When the power is turned on, this lamp lights up. When battery power is low

and voltage drops below about 2.1 V, the light will start blinking. Replace the

batteries if this lamp starts blinking (see 6-4).

4-3 Auto Power Off (APO) Lamp (Green)

This instrument is provided with an auto power off function. After 20 minutes

of inactivity (no buttons are pressed), this function automatically turns off the

power to minimize battery consumption. This lamp lights up when the auto

power off function is engaged and goes out when it is disengaged. To restore

power after it has been switched off by the auto power off function, set the

power switch to the “OFF” position and then turn on the power again. Even

when the auto power off function is activated, a small amount of current from

the power supply continues to flow. Be sure to return the power switch to the

“OFF” position when measurement is finished.

4-4 Auto Power Off (APO) Button

Engages and disengages the auto power off function. If the POWER lamp (red) is

blinking and battery power is low, the auto power off function cannot be disengaged.

4-5 Zero Adjustment ( A ZERO) Button

Performs zero adjustment of DC (DCA). While zero adjustment is operating,

the auto power off (APO) lamp (green) blinks.

Note:Pressing any button for 5 seconds or more will turn off the power.

] MEASUREMENT PROCEDURE

Do not apply an input signal exceeding the maximum rated input value.

2. Do not connect this instrument to a circuit with a voltage to ground

exceeding 600 V.

3. During measurement, do not hold the instrument at any point on the other

side of the barrier.

4. Be sure to check the selected range before each measurement.

1. To improve measuring accuracy, position the conductor at the center of

the clamp type current sensor (CT).

2. A lway s clamp o nly one wire at a t ime . Ac cura te me asur ement is

impossible if two or more wires, a cable with multiple conductors, or

parallel cord is clamped.

3. Accurate measurement is impossible if the CT is not closed completely.

4. Accurate measurement is sometimes impossible near a source of strong

magnetic field such as a transformer or high-current line, near a source of

electromagnetic waves such as radio equipment, or near a charged object.

5-1 Start-up Inspection

Perform the following pre-operational check for safety.

• Check the external appearance. Check that the instrument is free of

abnormality or damage due to dropping, etc.

• Make sure the output cable and output terminals are not disconnected,

cracked, or otherwise damaged.

• Make sure the batteries are inserted correctly before using this instrument

for the first time. After turning on the instrument, confirm that the POWER

lamp (red) does not blink and that battery power is not low. If the lamp

blinks, replace the batteries with new ones. If the lamp does not light, the

batteries may be completely exhausted (see 6-4).

• Make sure that the instrument is dry and that your hands are not wet.

5-2 Measurement Preparation

Have a measuring device ready that can measure

600 mV AC/DC. The following instructions are

applicable to a digital multimeter with 6000 counts.

①Connect the output terminals of this instrument

to the multimeter.

Red plug → V terminal

Black plug → COM terminal

②Turn on the multimeter and set it as follows.

DC (DCA) measurement

→ 600.0 mV DC range

AC (ACA) measurement

→ 600.0 mV AC range

③Set the range selector switch according to the size of the measured current.

If the size of the current is unknown, first select the 600 A range and then

change the range according to the measured value.

Note: • It is recommended to use a digital multimeter with 6000 counts and

AC mV/DC mV ranges. Use V ranges if AC mV/DC mV ranges are

not available.

• Waveform observation using an oscilloscope is not possible.

5-3 DC (DCA) Measurement

①Once you have completed your measurement preparation, press the zero

adjustment button to perform zero adjustment (see 4-5). Check that the

display on the multimeter shows a value less than 1.0 mV. Since the zero

point is likely to vary in DCA measurement, perform zero adjustment again

when a major change has been made in the direction of this instrument.

②Push the trigger on this instrument to open the clamp type current sensor

(CT). Clamp one wire of the conductor you are measuring and close the

CT completely. Now align the direction of the measured current with the

direction of the arrow on the CT. If the direction is wrong, the multimeter

displays a negative (–) polarity.

③Multiply the value displayed on the multimeter by one of the factors in the

table above and read it in the “A”.

[Reading example]

If the multimeter displays “59.0

mV” when this instrument is

set to the 60 A range and the

multimeter is set to the 600.0

mV range, the current value is

59.0 x 0.1 = 5.90 [A].

5-4 AC (ACA) Measurement

①Once you have completed your measurement preparation, push the trigger

on this instrument to open the CT. Clamp one wire of the conductor you

are measuring and close the CT completely.

②In the same way as in DCA measurement, multiply the value displayed on the

multimeter by an appropriate factor in the table above and read it in the “A”.

Note: To measure the AC current of two-core cables for home electric

appliances, use the optionally available LS11 Line Separator (see 8-2).

[6] MAINTENANCE

1. This section is very important for safety. Read and understand the

following instructions fully and maintain your instrument properly.

2. For securing safety and accuracy, inspect and calibrate the instrument

at least every year.

6-1 Maintenance and Inspection

1) Appearance:

　•Check that the exterior of the instrument is not damaged by dropping it.

2) Output cable and terminals:

•

Check that the cable and terminals are normal. Make sure that there is no

damage to the coating and that no part of the conductor is exposed.

If any of the troubles above is found, do not use the instrument and call for service.

6-2 Calibration

For more information about calibration and inspection, please contact Sanwa’s

authorized agent/distributor service provider, listed on our website (see 7-3).

6-3 Cleaning and Storage

1. The panel and case are not resistant to volatile solvent and must not be

cleaned with thinner or alcohol. If the instrument gets dirty, wipe with a

soft cloth moistened with a small amount of water.

2. T h e panel and case are not resistan t to heat. Do not place the

instrument near heat-generating devices.

3. Do not store the instrument anywhere it may be subject to vibrations or

could fall.

4. When storing the instrument, avoid hot, cold, or humid locations,

locations exposed to direct sunlight, or locations where condensation

is anticipated.

5. When the instrument is not going to be used for an extend period of

time, be

sure to remove the batteries.

6-4 Battery Replacement

1. To avoid electric shock, do not remove the battery

compartment cover when input is applied to the

CT or when measurement is being performed.

2. Confirm that the power switch is at the “OFF”

position before replacing the batteries.

①Using a Phillips screwdriver, remove the fixing screw

(x1) from the battery compartment cover.

②Remove the battery compartment cover.

③

Replace both of the two batteries in the battery compartment

with new ones by taking care of the polarity.

④Place the battery compartment cover and tighten

the fixing screw.

[7] AFTER-SALE SERVICE

7-1 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 under normal use

for the period of one (1) year from the date of purchase.

This warranty policy is valid within the country of purchase only, and applied

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 shall not apply to

disposables batteries, or any product or parts, which have been subject to one

of the following causes:

A failure due to improper handling or use that deviates from the 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.

A failure or damage due to transportation, relocation or dropping after the purchase.

7-2 Repair

Customers are asked to provide the following information when requesting 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 product

Please contact Sanwa authorized agent, distributor, or service provider, listed in

our website, in your country with above information. An instrument sent to Sanwa

agent or distributor without those information will be returned to the customer.

Note:

1) Prior to requesting repair, please check the following:

• Capacity and installation polarity of the batteries.

• Continuity of the test leads.

2) Repair during the warranty period:

The failed instrument will be repaired in accordance with the conditions

stipulated in “7-1 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 or service

provider in advance. The minimum retention period of service functional parts

is six (6) years after the discontinuation of manufacture. This retention period

is the repair 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 the product in

a box that is larger than the product 5 times or more in volume and fill cushion

materials fully and then clearly mark “Repair Product Enclosed” on the box surface.

The cost of sending and returning the product shall be borne by the customer.

7-3 SANWA Website

https://www.sanwa-meter.co.jp

E-mail: exp_sales@sanwa-meter.co.jp

[8] SPECIFICATIONS

8-1 General Specifications

Measurement range:

Output voltage

60 A AC/DC: 10 mV/1 A, 600 A AC/DC: 1 mV/1 A

Output impedance 100 Ω (internal impedance of connectable device: ≥1 MΩ)

Low battery warning POWER lamp (red) blinks when battery voltage drops below

approx. 2.1 V

Clamp clearance Approx. ø30 mm or 10 x 35 mm max.

Output cable length Approx. 1500 mm

Operating environmental

conditions

≤2000 m altitude, indoor use, pollution degree II

Withstand voltage 2000 V AC between iron core and rear case

Accuracy assurance

temperature/humidity range

23 ± 5 °C, 80 % RH max. (no condensation)

Operating temperature/

humidity range

Temperature: 5 40 °C (to no condensation)

Humidity: 80 % RH (max.) at 5 to 31 °C and linear decrease from

80 % RH to 50 % RH at 31 to 40 °C

Storage temperature/

humidity range

–10 to 40 °C, ≤80 % RH (no condensation)

40 to 50 °C, ≤70 % RH (no condensation)

Remove batteries when stored for long periods of non-use.

Temperature coefficient Below 18 °C and above 28 °C: Accuracy x 0.1 should be added to

output voltage tolerance % per °C

Power supply AAA (R03 manganese or LR03 alkaline) battery 1.5 V x 2

Auto power off Approx. 20 min. of inactivity (no buttons pressed)

Power consumption Approx. 10 mA during operation

Approx. 0.1 µA during auto power off

Battery life (continuous

operation)

Approx. 100 hours with alkaline batteries (LR03); approx. 45 hours

with manganese batteries (R03)

Dimensions, mass

190

( ) H

x 71

(W)

x 37

( )D

mm, approx. 260 g (including batteries)

Provided accessories

Instruction manual, carrying case (C201), AAA battery (R03) x 2

8-2 Optional Accessory

•

LS11 Line Separator: Rated voltage 125 V AC, 10 A

8-3 Measurement Range and Accuracy

“rdg” stands for reading.

60 A AC/DC range: 10 mV/1 A 600 A AC/DC range: 1 mV/1 A

Measurement

range

Output voltage

tolerance

Measurement

range

Output voltage

tolerance

ACA 0.5 ～ 60 A ±

（1.5 %rdg + 1.0 mV）ACA 1 ～ 600 A ±

（1.5 %rdg + 1.0 mV）

DCA 0.5 ～ 60 A DCA 1 ～ 600 A

Note:

•It is assumed that the conductor you are measuring is at the center of the CT.

•The ACA values are sine wave AC current of 400 Hz or less.

•The DCA values are those after zero adjustment has been performed.

•The values do not include errors generated by the connected measuring device.

Accuracy calculation method*

E.g., 60 A DC range

Displayed value :100.0 mV (600 mV DC range on multimeter)

Output voltage tolerance : ±(1.5 % rdg + 1.0 mV)

: ±(100.0 mV x 1.5 % + 1.0 mV) = ±2.5 mV

Output voltage : 100.0 mV ± 2.5 mV

Read current value : 10 A ± 0.25 A (within range of 9.75 to 10.25 A)

* Errors generated by the connected measuring device are added.

The product specifications described in this manual and its appearance are subject

to change without notice for improvement or other reasons.

WARNING

CAUTION

Multimeter

range

ACS101

100 to 600 mV

range

1 to 6 V

range

60 A range 0.1x 100x

600 A range 1x 1000x

CAUTION

(Red)

(Black)

①

③

④

⑤

⑥

⑨ ⑩

⑧

⑦

②

1.5V

SIZE "AAA"

1.5V

SIZE "AAA"

Remove screw

from battery

compartment

cover

Battery

compartment cover

Do not remove

− 1 − − 2 − − 3 − − 4 −

Produkt Specifikationer

Mærke:	Sanwa
Kategori:	Multimeter
Model:	ACS101

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