Iso-Tech IDM 103N, IDM 105N, IDM 106N Instruction Manual

Instruction Manual
IDM 103N/105N/106N

Digital Multimeter



EN FR IT

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ISO-TECH IDM 103N/105N/106N

DIGITAL MULTIMETER

INSTRUCTION MANUAL

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Safety Alert Symbol : 

READ and UNDERSTAND all

safety alert symbols :  in
this manual.
Failure to read and understand
safety instructions can result in
INJURY or DEATH

Warning

. . . . . . . . . .

. . . . . . . . . .

. . . . . . . . . .

. . . . . . . .

Caution

. . . . . . . . .

. . . . . . . . . .

. . . . . . . . . .

. . . . . . . .

. . . . . . . . .

Limited Warranty

This meter is warranted to the original purchaser against de­fects in material and workmanship for 3 year 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 current RS
Catalogue.

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Title Page

Safety …………………………………………………………….

”



Warning” and “Caution” Alert Symbol Statements ……
Warning and Cautions ………………………………………….
Symbols as Marked on The Meter ……………………………
Symbols and Terms in The Manual …………………………..

Safety Compliance And Certification ………………………

Safety Compliance ………………………………………………
Safety Certification ………………………………………………

Introduction ……………………………………………………..

Unpacking and Inspection ……………………………… …… ..
Environmental Conditions ………………………………………
The Meter Description …………………………………………..

Making Basic Measurements ………………………………..

Preparation and Caution Before Measurement ………………
Measuring AC/DC Voltage and Frequency …………………..
Measuring Resistance ………………………………………….
Testing for Diode and Continuity ………………………………
Measuring DC/AC mA and AC / DC A Current and Frequency .
Measuring Hz / PRM ……………………………………………
Measuring Capacitance ………………………………………..
Measuring Temperature …………………………… …… …… ..

Features ………… ………………………………………… …….

Features Description ……………………………………………
Features Available vs Functions ……………………………….

Using The Features ……………………………………………

Manual Ranging and Auto Ranging …………………………..
Min Max Recording Mode ………………………………………
REL △ ……………………………………………………………
Display Hold ……………………………………………………..
Backlight ………………………………………………………….
Auto Power Off (Battery Saver) ………………………………..
Disable Auto Power Off …………………………………………

Maintenance …………………………………………………….

Cleaning and Storage …………………………………………..
Fuse Replacement ………………………………………………
Battery Replacement …………………………………… …… …

Trouble Shooting ………………………………………………

Basic Trouble Shooting …………………………………………
Testing the Fuse and Test Leads ……………………………..

Specification ……………………………………………………

General Specification …………………………………………..
Electrical Specification ………………………………………….
Terms in the Specification ……………………………………..

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Safety

"Warning" and "Caution" Alert Symbol Statement :

" Caution" Alert Symbol

A " Caution" Statement: identifies
conditions and actions that could
DAMAGE the Meter or the equip­ment under test.

 Warnings

" Warnings" and " Cautions" :

․ When using test leads or probes, keep your fingers be­ hind the finger guards.

․ Remove test lead from Meter before opening the battery
door or Meter case.

" Warning" Alert Symbol

A "Warning" Statement identifies
hazardous conditions and actions
that could cause BODILY HARM or
DEATH.

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․ Use the Meter only as specified in this manual or the
protection by the Meter might be impaired.

․ Always use proper terminals, switch position, and
range for measurements.

․ Never attempt a voltage measurement with the test
lead inserted into the A input terminal.

․ Verify the Meter’s operation by measuring a known
voltage. If in doubt, have the Meter serviced.

․ Do not apply more than the rated voltage, as marked
on Meter, between terminals or between any terminal
and earth ground.

․ Do not attempt a current measurement when the open
voltage is above the fuse protection rating. Suspected
open circuit voltage can be checked with voltage fun­ ction.

․ Only replace the blown fuse with the proper rating as
specified in this manual.

․ Use caution with voltages above 30 Vac rms, 42 Vac
peak , or 60 Vdc. These voltages pose a shock hazard.

․ To avoid false readings that can lead to electric shock
and injury, replace battery as soon as low battery indi­ cator  appears.

․ Disconnect circuit power and discharge all high-voltage
capacitors before testing resistance, continuity, diodes,
or capacitance.

․ Do not use Meter around explosive gas or vapor
․ To reduce the risk of fire or electric shock do not ex-

pose this product to rain or moisture.

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 Cautions

․ Disconnect the test leads from the test points before

changing the position of the function rotary switch.
․ Never connect a source of voltage with the function rotary

switch in Ω/

</ mA //Hz position.

․ Do not expose Meter to extremes in temperature or high
humidity.

․ Never set the meter in  mA function to measure the
voltage of a power supply circuit in equipment that could
result in damage the meter and the equipment under test.

Symbols as Marked on The Meter :

 : AC (Alternating Current)
 : DC (Direct Current)

 : Caution, Risk of Electric shock. To alert you to the

presence of a potentially hazardous voltage.

 : Caution, Risk of Danger. Refer to Warnings and

 Cautions in the manual.

 : Double Insulation protection against electric shock.
: Conforms to European Union directives.

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Symbols and Terms in The Manual

Symbols :

 : Caution, Risk of Danger.
 Warning : To identifies hazardous conditions and actions

that could cause BODILY HARM or DEATH

 Caution : To identifies conditions and actions that could

DAMAGE the meter or equipment under test.

 : Fuse.

Terms :

CAT Level : Over Voltage Category Level, indicates measure­ment can be performed at which measuring circuit level. The
different level measuring circuit has different high transient
stresses voltage.

PER IEC 1010 OVERVOLT AGE INSTALLATION C ATEGORY

OVERVOLTAGE CATEGORY Ⅰ

Equipment of OVERVOLTAGE CATEGORY Ⅰ is equipment
for connection to circuits in which measures are taken to limit
the transient overvoltage to an appropriate low level. Note­examples include protected electronic circuits.

OVERVOLTAGE CATEGORY Ⅱ

Equipment of OVERVOLTAGE CATEGORY Ⅱ is energy
consuming equipment to be supplied from this fixed installation.

OVERVOLTAGE CATEGORY Ⅲ
Equipment of OVERVOLTAGE CATEGORY Ⅲ is equipment
in fixed installations. Note-Examples include switches in this
fixed installation and some equipment for industrial use with
permanent connection to the fixed installation.

OVERVOLTAGE CATEGORY Ⅳ

Equipment of OVERVOLTAGE CATRGORY Ⅳ is for use at
the origin of the installations Note-Examples include electricity
meters and primary over-current protection equipment.

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PER IEC1010 Pollution degree
POLLUTION

Addition of foreign matter, solid, liquid or gaseous (ionized
gases), that may produce a reduction of dielectric strength or
surface resistivity.

POLLUTION degree

For the purpose of evaluating spacing of this product, the
following degrees of POLLUTION in the microenvironment
are defined.

POLLUTION DEGREE 1

No POLLUTION or only dry, non-conductive POLLUTION
occurs. The POLLUTION has no influence.

POLLUTION DEGREE 2

Normally POLLUTION only non-conductive POLLUTION
occurs. Occasionally, however, a temporary conductivity
caused by condensation must be expected.

POLLUTION DEGREE 3

Conductive POLLUTION occurs, or dry, non-conductive
POLLUTION occurs which becomes conductive due to con­densation, which is expected.

NOTE : In such conditions equipment is normally protected
against exposure to direct sunlight, precipitation, and
full wind pressure, but neither temperature nor

humidity is controlled.

Safety Compliance And Certification

Safety compliance

The Meter conform to CENELEC LVD (Low-Voltage rective)
73/23/EEC and EMC (Electromagnetic Compatibility
directive) 89/336/EEC

The Meter meet the requirements to IEC 61010-1 (2001) ,
EN 61010-1 (2001), UL 3111-1 (Jan.1994)
CSA C22.2 NO.1010-1-92 +A2: Feb. 1997

Safety Certification : 

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Introduction

Unpacking and Inspection

Upon removing your new Digital Multimeter from its packing,
you should have the following items.

1. Digital Multimeter.

2. Test lead set (one black, on red)

3. User Manual.

4. Protective holster.

Environmental Conditions

This product is safe at least under the following conditions:

1. Indoor Use.

2. Altitude up to 2000 Meter.

3. Operating Temperature and Relative Humidity :
Non-condensing ≦10°C ,11°C ~ 30°C (≦80% R.H)

31°C ~ 40°C (≦75% R.H), 41°C ~ 50°C (≦45% R.H),

4. Storage Temperature and Relative Humidity : -20°C ~ 60°C
(0 ~ 80% R.H) when battery removed from Meter.

5. Pollution degree 2

6. Installation category :
The standard 100 series models meet the requirements for
double insulation to IEC 61010-(2001), EN61010 (2001),
UL3111-1(6.1994), CSA C22.2 NO.1010-1-92 to terminals:

V/Ω : Cat. Ⅱ 1000V, Cat. Ⅲ 600V
mA /A : Cat. Ⅱ 600V, Cat. Ⅲ 300V

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Power On/Off

COMMON Input

C

Input

mA InputA

Features

Functions &

Display

The Meter Description

Front Panel Illustration

1. 4000 counts LCD display.

2. Push-buttons for features.

3. Rotary switch to turn the Power On or Off and to select a
function.

4. Input Terminal for A current function

5. Input Terminal for all functions EXCEPT current (A)
functions

6. Common (Ground reference) Input Terminal for all functions.

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Making Basic Measurements

Preparation and Caution Before Measurement

 : Observe the rules of
 Warnings and  Cautions

.

When connecting the test leads to the DUT (Device Under

Test) connect the common (COM) test lead before connect-
ing the live lead ; w hen removing the test leads removing the
test live lead before removing the common test lead.

The figures on the following pages show how to make basic
measurements.

TEST EQUIPMENT RISK ASSESSMENT (UK RECOMMEN­DATION)

Users of this equipment and/or their employers are reminded
that Health and Safety Legislation require them to carry out
valid risk assessments of all electrical work so as to identify
potential sources of electrical danger and risk of electrical
injury such as from inadvertent short circuits. Where the
assessments show that the risk is significant then the use of
fused test leads constructed in accordance with the HSE
guidance note GS38 "Electrical Test Equipment for use by
Electricians" should be used.