DLC470 - Measurement Sanwa - Free user manual and instructions

Product Type	Digital Clamp Meter
Brand	Sanwa
Model	DLC470
Measurement Functions	AC/DC Voltage, AC Current (clamp), Resistance, Continuity, Diode Test, Capacitance
AC Voltage Range	0-600V
DC Voltage Range	0-600V
AC Current Range (Clamp)	0-400A
Resistance Range	0-40MΩ
Display	LCD, 4000 counts
Jaw Opening	30 mm
Dimensions	200 x 70 x 35 mm
Weight	200 g
Power Supply	2 x AAA batteries (1.5V)
Auto Power Off	Yes, after 15 minutes
Data Hold	Yes
Safety Rating	CAT II 600V, CAT III 300V
Accessories Included	Test leads, batteries, carrying case, manual
Maintenance & Cleaning	Wipe with dry cloth; no solvents
Spare Parts & Repairability	Contact Sanwa service center
General Information	Designed for electrical measurements in home and industrial settings

Frequently Asked Questions - DLC470 Sanwa

How do I measure AC current with the Sanwa DLC470?

Set the rotary switch to the AC current (A~) range. Open the clamp jaw and place it around a single conductor. Read the value on the LCD.

What is the maximum voltage the DLC470 can measure?

The DLC470 can measure up to 600V AC or DC. Do not exceed this limit to avoid damage.

How do I replace the batteries?

Remove the screw at the back of the meter, open the battery compartment, replace the two AAA batteries, and close the cover.

Can the DLC470 measure capacitance?

Yes, it can measure capacitance. Select the capacitance range (often marked with a capacitor symbol) and connect the test leads.

What does the data hold function do?

Pressing the DATA HOLD button freezes the current reading on the display, allowing you to record it later.

How do I test continuity with this meter?

Set the dial to the continuity test (usually a diode or sound wave symbol). Touch the probes together; you should hear a beep. Then test the circuit.

Is the Sanwa DLC470 safe for use in industrial environments?

Yes, it has a safety rating of CAT II 600V and CAT III 300V, making it suitable for industrial electrical systems.

Why does the meter turn off automatically?

The auto power off feature extends battery life by turning off the meter after 15 minutes of inactivity. Press any button to wake it.

What should I do if the display is blank?

Check the batteries. Replace them if necessary. Also ensure the dial is not set to OFF and that the meter is not in sleep mode.

Where can I find the user manual for the DLC470?

The manual is available for free download on notice-facile.com in PDF format.

USER MANUAL DLC470 Sanwa

DIGITAL LEAKAGE CLAMP METER

INSTRUCTION MANUAL

CE

SANWA ELECTRIC INSTRUMENT CO., LTD.

Dempa Bldg., 4-4 Sotokanda 2-Chome Chiyoda-ku, Tokyo, Japan

02-2205 2040 6011

- MEMO -

[1] SAFETY PRECAUTIONS

*Before use, read the following safety precautions.

This instruction manual explains how to use your digital leakage clamp meter DLC470 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.

F : High voltage hazard : Ground

Ω : Resistance : Buzzer ·)

Backlight

☐: Double insulation or reinforced insulation

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1-2 Warning Messages for Safe Use

WARNING

The following instructions are intended to prevent personal injury such as burn and electric shock.

Be sure to follow them when using the meter.

1. Never use the meter for the power lines exceeding 600 Vrms to ground.

2. Voltages over AC 30 Vrms (42.4 Vpeak) or DC 60 V are hazardous to human body. Take care so as not to touch them.

3. Never input signals exceeding the environmental impact value (or 1.8).

4. Never use the meter near equipment which generates strong electromagnetic waves or is charged.

5. Never use the meter if the meter or test leads are damaged or broken.

6. Never use the meter with the case or battery lid removed

7. During measurement, keep your fingers behind the finger guard of test leads and the meter of the test leads.

8. During measurement, do not change function switch of the meter nor replace the plugs to other terminals.

9. Before starting measurement, make sure that the function and range are properly set.

10. Never use the meter when it is wet or with wet hands.

11. Be sure to use the specified type of test leads.

12. Never attempt repair or modification, except for battery replacement

13. Always conduct start-up inspection and check the water at least once every

14. This meter is for indoor use only.

1-3 Overload Protection

The maximum rated input value and overload protection have been established for the input terminals of each function.

Function	Input Terminal	Max. Rated Input Value	Max. Overload Protection
DCV·ACV	— and +	DC/AC 600 V	DC/AC 660 V
→ Ω		⚠ Do not input voltage
ACmA	CT	AC 600 mA	AC 100 A
ACA		AC 400 A	AC 450 A

[2] APPLICATIONS AND FEATURES

2.1 Applications

This is a digital leakage clamp meter designed for measurement in the ranges of CAT. III 600 V. This meter is useful for measuring leakage or load current on power lines and equipment.

2-2 Features

• Compatible to IEC61010 CAT.III

- Extract frequency range of mainly ACmA 50 Hz / 60 Hz and ACA, with band-pass filter functions.

• Measures mA with resolution 0.01 mA

- MAX MIN hold and data-holding functions - Backlight function

• Auto Power Off function

Measurement categories (Overvoltage categories)

CAT. II : Primary circuit of equipment with a power cord to be connected to a mains socket.

CAT.III : Primary circuit of equipment that inputs power directly from the distributor and the circuit from the distributor to the mains

CAT.IV : Circuit from the leading wire to the distributor.

[3] NAMES OF COMPONENT UNITS

3-1 Main unit

3-2 Display

3-3 Test Lead

In case of test pins cover attached: CAT.III 600V In case of test pins cover removed: CAT.II 1000V

[4] DESCRIPTION OF FUNCTION

4-1 Power Switch and function switch Turn this switch to turn on and off the power and select a measuring function.

4-2 Data Hold function

When the HOLD button is pressed, the reading indicated will be held with HOLD on the display. The indicated reading will not change if the input signal is changed. When this button is

pressed again, the function will be disabled and the meter will return to the measurement mode.

- The function will be canceled at changing measurement functions.

4-3 BPF Button (ACmA & ACA Function) Will switch to no-filter mode → BPF 50 Hz → BP 60 Hz → no-filter mode each time you press the button. With this BPF function, you can extra the frequency in which you would like to measure

Remarks:

- Frequency Response 50 Hz BPF: Using 25 Hz - decrease to 15 % (-16 dB), 100 Hz - decrease to 4 % (-27 dB) 60 Hz BPF: Using 30 Hz - decrease to 15 % (-16 dB), 120 Hz - decrease to 4% (-27 dB) - BPF frequency response curve

Remarks:

- Readings of current are not properly in BPF function if measuring current frequency is other than 50/60 Hz.

- If the measured current contains extremely large noise, it may not be possible to measure correctly.

4-4 MAX/MIN function

When the MAX/MIN button is pressed, the meter enters MAX/MIN mode, fixes a measuring range and turns MAXMIN on. Press the button, to read MAX, MIN, current reading sequence. Press the button for 1 sec. or more to exit the MAX/MIN mode.

Remarks:

Function changes or functional operations will cancel the function.

4-5 BACKLIGHT function

When the backlight button is pressed, the backlight will be turned on. To disable the function, the button is pressed again. The backlight will be automatically turned off about 30 seconds after it is turned on.

4-6 AUTO POWER OFF function

The meter will go to AUTO POWER OFF function to save battery life about 30 minutes after the last function switch or button operation. To wake up the meter, press any button or re-power on. Ⓧ turns on while activating the function.

Remarks:

- Even in the AUTO POWER OFF mode, the tiny power is still consumed. When the meter is not going to be used for an extended period of time, be sure to turn off the power switch.

- To disable the function, turn the function switch to position other than OFF while holding the HOLD button. On the display is turned off when the AUTO POWER OFF function is disabled.

4-7 Low Battery indication

When the built-in batteries have been discharged and the voltage has dropped to below about 2.2 V, +/- appears on the display. When the mark flickers or lights, replace both two batteries with new ones.

[5] MEASURING PROCEDURE

WARNING

1. Do not apply an input signal exceeding the maximum rated input of each function.
2. During measurement, do not change the function switch.
3. During measurement, keep your finger behind the finger guard of the test lead and the meter.
4. When measurement has been finished, remove the test leads and CT from the object measured and turn the function switch to OFF position.

5-1 Start-up Inspection

Always conduct the start-up inspection to ensure safety.

1. Be sure that when the meter is turned on, the low battery indication +/- is not flickering or lit. If it is flickering or lit, replace the batteries with new ones.

2. Do not use the meter if the meter or test lead is damaged or broken.

3. Make sure the test leads are not cut.

4. Make sure the meter and your hand are not wet

5-2 Current Measurement ACmA

WARNING

Remove the test leads from the measuring terminals to avoid electric shock.

ACmA current measurement

ACmA current measurement
Zero-phase current alarm earth wire

Remarks:

• Clamp the conductor (cable) to measure at the center of the trans core (CT).
  • To measure zero-phase current, clamp only earth wire or all of wires like 2-core or 3-core wire together.
  • The meter may malfunction in places where a strong magnetic field is present.
• Do not apply voltage and current at the same time.

- 1 - - 2 - - 3 - - 4 - - 5 -

5-3 Current Measurement (ACA)

WARNING

Remove the test leads from the measuring terminals to avoid electric shock.

ACA current measurement

Remarks:

- Clamp the conductor (cable) to measure at the center of the trans core (CT).

- Clamp only one cable. If several cables are clamped together or 2-core or 3-core cords or cables are clamped, current cannot be measured accurately.

The meter may malfunction in places where a strong magnetic field is present. Do not apply voltage and current at the same time.

5-4 Voltage Measurement (ACV DCV)

WARNING

Never use the meter in power lines exceeding 600 V to ground.

AC voltage

DC voltage

5-5 Resistance Measurement, Continuity Check

WARNING

Never apply a voltage to the input terminals.

Resist ance measurement

Remarks:

- Reading is 30 ohm or below, buzzer sounds. - Open voltage: approx. 0.9 V

[6] MAINTENANCE

WARNING

1. The following instructions are very important for safety. Read this manual thoroughly to ensure correct maintenance.
2. Calibrate and inspect the meter at least once a year to ensure safety and maintain its accuracy.

6-1 Maintenance and Inspection

1) Appearance:

Is the meter not damaged due to falling or other cause?

Are the core wires not exposed at any place of the test leads?

Is the plug when inserted to the input terminal not loose?

If any of the above problems exists, stop using the meter and request for repair.

6-2 Calibration and Inspection

For more information, please contact Sanwa's authorized agent / distributor service provider, listed in our website. See section 7-3.

6-3 Storage

WARNING

1. The panel and case are not resistant to volatile solvent and must not be cleaned with thinner or alcohol.

2. The panel and case are not resistant to heat. Do not place the meter near heat-generating devices.

3. Do not store the meter in a place where it may be subjected to vibration or from where it may fall.

4. Do not store the meter in places under direct sunlight, or hot, cold or humid places or places where condensation is anticipated.

5. If the meter will not be used for a long time, remove the batteries.

6-4 Battery Replacement

Batteries when the meter is shipped:

A battery for monitoring has been installed prior to shipment from the factory. It may be discharged before the expiration of the described battery life.

*The battery for monitoring is a battery used to check the functions and performance of the product.

WARNING

To avoid electric shock, do not remove the battery door with an input being applied to the measuring terminals. Also, before starting replacement, make sure the power of the meter is OFF.

1. Remove the fixing screw of the battery lid with a minus screwdriver.
2. Replace both two batteries in the battery holder with new ones. (Pay attention to their polarity.)
3. Set and secure the battery door with the fixing screw as before.

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[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:

1. 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.

5. 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

1. Where you purchased the product

Please contact Sanwa authorized agent / distributor / service provider, listed in our website, in your country with above information. An instrument sent to Sanwa / agent / distributor without above information will be returned to the customer.

Remarks:

1) Prior to requesting repair, please check the following: Capacity of the built-in battery, polarity of installation and discontinuity of the test leads.

2) Repair during the warranty period: The failed meter 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 / distributor / service provider in advance. The minimum retention period of service functional parts is 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 web site

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

E-mail: [e-mail]

[8] SPECIFICATIONS

8-1 General Specifications

Operation method	Double integration
AC measuring Average sensing
Display 6000 counts for A / V9999 counts for Resistance and Continuity check
Sampling rate Approx. 2 times / sec.
Over-range “OL” indication
Range selection	Auto
Polarity switching	Auto (- indication)
Low Battery indication	lights when built-in battery voltage is 2.2 V or below
Max. clamp conductor diameter	40 mm35 mm (open CT size)
Environmental condition	Altitude up to 2000 meters, indoor use pollution degree 2
Operating temperature	5 °C to 40 °C.Humidity range is as follows (without condensation):Max. 80 %RH for temperatures up to 31 °C decreasing linearly to 50 % relative humidity at 40 °C

Storage temperature	-10 °C to 40 °C; ≤80 %RH (without condensation).40 °C to 50 °C; ≤70 %RH (without condensation). (Batteries should be removed when the instrument is not to be used for a long period.)
Power supply	LR03 x 2 pcs
Auto Power Off	Power Off in about 30 mins. after the last operation.
Power consumption	Approx. 70 mW TYP.
Battery life	Approx. 42 hours (backlight off)
Dimensions & mass	H206 x W83 x D38 mm Approx. 320 g (batteries included)
Safety standards	IEC61010-1 CAT.III 600V, IEC61010-2-032, IEC61010-031
EMC Directive	IEC61326 (EMC)
RoHS Directive	EN50581 (RoHS)
Standard Accessories	Manual, Test leads (TL-21a), Carrying case (D-DCM600)

8-2 Measuring Range and Accuracy

Temperature: 23 °C ± 5 °C, humidity: 80 %RH

max. (no condensation) rds (reading): Road only

log (reading). Read value. dgt (digit): Number of counts of last digit.

ACmA

Function	Range	Accuracy
ACmA	60.00 mA	50 Hz / 60 Hz± (1.2 %rdg + 5 dgt)
	600.0 mA	40 Hz ~ 400 Hz± (2.5 %rdg + 10 dgt)

ACA

Function	Range	Accuracy
ACA	60.00 A	0 A ~ 200 A50 Hz / 60 Hz± (1.2 %rdg + 5 dgt)40 Hz ~ 400 Hz± (2.5 %rdg + 10 dgt)
	400.0 A	200.1 A ~ 400 A50 Hz / 60 Hz± (2.0 %rdg + 5 dgt)40 Hz ~ 400 Hz± (5.0 %rdg + 10 dgt)

Remarks:

- Accuracy is specified at the center of CT. - Add 0.3% rdg to the accuracy of 50Hz in case of the 50Hz BPF mode. - Add 0.3% rdg to the accuracy of 60Hz in case of the 60Hz BPF mode.

ACV

Function	Range	Accuracy
ACV 600.0 V ± (1.2 %rdg + 5 dgt)

Remarks:

- Input impedance: Approx 1M ohm - Accuracy assured frequencies: 40 Hz \~ 400 Hz (sine wave)

DCV

Function	Range	Accuracy
DCV	600.0 V	± (1.0 %rdg + 2 dgt)

Remarks:

- Input impedance: Approx 1M ohm

Resistance and Continuity check

Function	Range	Accuracy
· Ω	999.9 Ω	± (1.0 %rdg + 8 dgt)

Remarks:

- Open voltage: Approx 0.9 V - Buzzer sounds : Less than 30 ohms

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