RS PRO ILOM-508A Manual de usuario

Instruction Manual

ILOM-508A

Milliohm Meter

Milliohm Meter/ English

2016-9-10 / V001 EN-1

Contents

Feature EN-2

General EN-2

Instrument description EN-3

Notice in prior to the testing EN-3

Electrical Specification EN-4

Measurement by the Four Wire type one pair of coated clip EN-4

Precise Impedance measurement EN-5

Battery Replacement EN-6

Replacement of fuse EN-6

Limited Warranty EN-6

Contact information EN-7

Milliohm Meter/ English

EN-2 2016-9-10 / V001

Feature:

Very low impedance measurement by Four Wire type one pair coated clip.

There is a fuse (0.5A/250V) to protect the input circuit.

Applicable measurement of Resistance, Motor coil, Transformer, Printed Circuit

Board.

Accurate measurement of conductor, light electricity and welding point.

Wide measurement range, 0.1 mΩto 20kΩin 6 positions.

D –H Switch: Lockup readings for LCD display.

General:

Display:

3-1/2 digits, LCD display with max. reading of

1999 with decimal point and measurement

unit.

Overload indication:

“OL” indication.

Zero Adjust:

External zero adjust knob.

Low battery indication:

Replace battery as LCD display “ ”.

Reading speed:

2.5 times per second.

Operating attitude:

Max. 2000 meters above level.

Operating ambience:

In-door use, under environmental pollution

grades two

Operating temperature and

R.H. value:

5°C to 40°C, 80%RH or lower.

Storage temperature and R.H.

value:

-10°C to 60°C, 70%RH or lower.

Power supply:

1.5V × 6 NEDA 15F IEC R6Alkaline battery.

AC adapter (not included):

An optional accessory with the specification

required as followings:

AC input voltage: 100V AC to 240V AC 0.3A

with input frequency of 60 HZ or 50HZ.

DC output voltage: 9V DC.

DC output current: 0.5A DC.

Socket: pin ground casing positive with

external diameter 3.5mm and internal

diameter 2.0mm.

Dimension and weight:

160 x 100 x 52mm. approximate 500g.

Accessories:

Carrying case, one set of testing clips and

instruction manual.

Fuse specification:

0.5A/250V, 5Ø x 20mm. FAST MIN

INTERRUPTS RATINGS 1500A.

Milliohm Meter/ English

2016-9-10 / V001 EN-3

Instrument description:

1. RX socket:

For testing clips input.

2. LCD display:

Indication of measured value and unit.

3. ZERO ADJ. Knob:

For zero adjustment.

4. Power switch and Range

selector switch:

Selection in functional range of the meter.

5. D-H:

Lock up the LCD reading.

6. DC Power socket:

For AC adapter (optional accessory)

FIG (1)

Notice in prior to the testing:

Don not connect the testing input terminals LO, RX, RX, HI) to any input voltage

directly, this is to prevent any possible damage to the internal circuits of the meter.

Milliohm Meter/ English

EN-4 2016-9-10 / V001

Electrical Specification:

(23°C±5°C, 80% RH or lower)

Accuracy: ±(0.3% reading + 4 digit)

Range

Accuracy

Resolution

Testing current

Open Voltage

200 mΩ

0.1mΩ

100mA

Approx. 4.8VDC

2Ω

1mΩ

10mA

20Ω

±(0.3%+ 4dgt)

10mΩ

10mA

200Ω

0.1Ω

1mA

2kΩ

1Ω

1mA

20kΩ

10Ω

100uA

Measurement by the Four Wire type one pair of

coated clip:

To guarantee a higher precise measurement of this digital Ohmmeter, an accurate

wide range impedance testing equipment, and to eliminate any improper influence of

measurement, especially in effect of the impedance of testing leads, the following

procedures should be followed.

FIG (2)

1. Please refer to the table shown above, a testing current is passed in individual

testing range (from HI end to the LO end).

2. The specific electric current flows through any unknown resistance RX.

3. The Voltage VX can be measured on RX1, RX2 terminals, VX = RX x IS

therefore RX = VX / IS

4. The unknown resistance value can be given on LCD display from VX voltage

value to be measured.

5. To obtain accurate impedance measured without any resistance value

impedance between terminals RX1 and RX2.

Milliohm Meter/ English

2016-9-10 / V001 EN-5

Precise Impedance measurement:

1. Insert an RED testing lead into “HI” socket and another RED testing lead into

the adjacent “RX” socket; insert a BLACK testing lead into “LO” socket and

another BLACK testing lead into the adjacent “RX” socket.

2. Select the function switch to 200 mΩposition.

3. Short circuit the two testing clips, adjust “ZERO ADJUST KNOB” to a ”000”

reading value on the LCD.

4. Whenever a selected range of 200 mΩ, 2Ω, 20Ω, 200Ωto be measured the

readjustment of “ZERO ADJST” shall be deeply necessary.

5. To measure an unknown resistor RX then by following the two point type of

measurement per shown in figure 3.

FIG (3)

6. Measure the resistance on PCB by using the two-point type of measurement

per shown in figure

FIG (4)

7. The measured value is shown on LCD

Milliohm Meter/ English

EN-6 2016-9-10 / V001

Battery Replacement:

The meter is powered by 1.5V battery x 6pcs.

Use the following procedure to replace the battery:

1. Replace battery immediately when LCD displays “”.

2. Turn the function switch to the "OFF" position.

3. Use a screwdriver to unfasten the screws on the battery cover and remove the

cover.

4. Take out the old batteries and replace with new batteries, taking care to note

the correct polarity.

5. Re-install the battery cover and tighten the holding screws.

Replacement of fuse:

For a safety protection of the electrical circuit please replace new fuse

complying the specification 0.5A/250V, 5Ø x 20mm. FAST MIN INTERRUPT

RATINGS 1500A.

1. Select the function range switch to “OFF” position.

2. To unscrew the bottom case by using a screwdriver.

3. Pull out the burned fuse and replace a new one.

4. Close the bottom case and tighten screw.

Limited Warranty:

This meter is warranted to the original purchaser against defects in material and

workmanship for 3 years from the date of purchase. During this warranty period,

RS Components will, at its option, replace or repair the defective unit, subject to

verification of the defect or malfunction. This warranty does not cover fuses,

disposable batteries, or damage from abuse, neglect, accident, unauthorized

repair, alteration, contamination, or abnormal conditions of operation or handling.

Any implied warranties arising out of the sale of this product, including but not

limited to implied warranties of merchantability and fitness for a particular purpose,

are limited to the above. RS Components shall not be liable for loss of use of the

instrument or other incidental or consequential damages, expenses, or economic

loss, or for any claim or claims for such damage, expense or economic loss. Some

states or countries laws vary, so the above limitations or exclusions may not apply

to you. For full terms and conditions, refer to the RS website.

Milliohm Meter/ English

2016-9-10 / V001 EN-7

Contact information:

Africa

RS Components SA

P.O. Box 12182,

Vorna Valley, 1686

20 Indianapolis Street,

Kyalami Business Park,

Kyalami, Midrand

South Africa

www.rs-components.com

Asia

RS Components Pte Ltd.

31 Tech Park Crescent

Singapore 638040

www.rs-components.com

China

RS Components Ltd.

Suite 23 A-C

East Sea Business Centre

Phase 2

No. 618 Yan'an Eastern

Road

Shanghai, 200001

China

www.rs-components.com

Europe

RS Components Ltd.

PO Box 99, Corby,

Northants.

NN17 9RS

United Kingdom

www.rs-components.com

Japan

RS Components Ltd.

West Tower (12th Floor),

Yokohama Business Park,

134 Godocho, Hodogaya,

Yokohama, Kanagawa

240-0005

Japan

www.rs-components.com

U.S.A

Allied Electronics

7151 Jack Newell Blvd. S.

Fort Worth,

Texas 76118

U.S.A.

www.alliedelec.com

South America

RS Componentes Limitada

Av. Pdte. Eduardo Frei M.

6001-71

Centro Empresas El Cortijo

Conchali, Santiago, Chile

www.rs-components.com

Manuel et Instructions

ILOM-508A

Miliohmètre

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