RS PRO IDM 98IV User manual

IDM 98IV & 99IV / EN
1
Warning
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Safety sheet
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Read First
Safety Information
Understand and follow operating instructions carefully.
Use the meter only as specified in this manual; otherwise,
the protection provided by the meter may be impaired.
 WARNING
Identifies hazardous conditions and actions that could cause
BODILY HARM or DEATH
CAUTION
Identifies conditions and actions that could DAMAGE the meter
or equipment under test
 WARNING
˙When using test leads or probes, keep your fingers behind
the finger guards.
˙Remove test lead from Meter before opening the battery
door or Meter case.
˙Use the Meter only as specified in this manual or the protec-
tion by the Meter might be impaired.
˙ Always use proper terminals, switch position, and range for
measurements.
˙ 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.
˙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 indicator.
˙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 expose this
product to rain or moisture.
˙ Wear suitable personal protective equipment when working
around or near hazardous live conductors which could be
accessible.
Warning Safety sheet

IDM 98IV & 99IV / EN
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Risk of electric shock
See instruction manual
DC measurement
Equipment protected by double or reinforced insulation
Battery
 Fuse
Earth
AC measurement
Conforms to EU directives
Do not discard this product or throw away.
CAUTION
˙Disconnect the test leads from the test points before chang-
ing the position of the function rotary switch.
˙Do not expose Meter to extremes in temperature or high
humidity.
˙ Never set the meter in Ω, $,%, ,mA, A 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 and Instruction
manual
Unsafe Voltage
To alert you to the presence of a potentially hazardous voltage,
when the Tester detects a voltage ≧30 V or a voltage overload
(OL) in V, mV .The ”“ symbol is displayed.
Maintenance
Do not attempt to repair this Meter. It contains no user
serviceable parts. Repair or servicing should only be performed
by qualified personnel.
Cleaning
Periodically wipe the case with a dry cloth and detergent.
Do not use abrasives or solvents.

IDM 98IV & 99IV / EN
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Introduction
The Meter Description
Front Panel Illustration
1. LCD display : 6000 counts
2. Push-buttons.
3. Rotary switch for turn the Power On / Off and select the
function.
4. Input Terminal for A.
5. Input Terminal for V,Ω, %, functions.
6. Common Input Terminal.
7. Input Terminal for mA.
7.mA input
6.Common input
5.V, , , input
4.A input
3.Rotary switch
2.Buttons
1.Display

IDM 98IV & 99IV / EN
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Feature
• 6000 count digital display.
• 62 segment bar graph .
• Extra Large scale display and white backlit
• True RMS
• 0.08% basic DCV accuracy
• Automatic AC/DC Voltage detect with low impedance
(Auto-V LoZ)
• VoltSeek (Non-Contact Voltage detect)
• Smart Data Hold
• Peak Hold (1ms) (for 99IV only)
• Min/ Max function
• AC+DC function
• Frequency Counter on AC mode
• Capacitance Measurement
• Temperature ( for 99IV only)
• Low battery indicator with segments
• Auto Power Off (20 minutes)
• Shock proof from 4 feet drops
• CAT.IV 600V/CAT. Ⅲ1000V Safety standard
Unpacking and Inspection
Upon removing the meter from its packing, you should have
the following items.
1. IDM 98IVor IDM 99IV Digital Multimeter.
2. Test leads. set (one black, one red)
3. Temperature Probe (for 99IV only)
4. User Manual
5. Protective Holster
6. Battery (installed)

IDM 98IV & 99IV / EN
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Making Basic Measurements
Preparation and Caution Before Measurement
: Observe the rules of Warnings and Cautions
The figures on the following pages show how to make basic
measurements.
Caution
When connecting the test leads to the DUT (Device Under Test)
connect the common test leads before connecting the live test
leads ; when removing the test leads, remove the live test leads
before removing the common test leads.
Measuring AC / DC Voltage and Frequency
Rotate the switch and press the Function button to select the
measuring function.
See “Using the Function Button”

IDM 98IV & 99IV / EN
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Measuring AC/DC Current
Rotate the switch and press the Function button to select the
measuring function.
See “Using the Function Button”
Measuring AC/DC Current Frequency
Disconnect
AC Disconnect
Rotate the switch and press the Function button to select the
measuring function.
See “Using the Function Button”

IDM 98IV & 99IV / EN
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Measuring Resistance/Capacitance
Resistance Capacitance
Resistance
Capacitance
Rotate the switch and press the Function button to select the
measuring function.
See “Using the Function Button”
Measuring Continuity / Diode
Rotate the switch and press the Function button to select the
measuring function.
See “Using the Function Button”

IDM 98IV & 99IV / EN
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Measuring Temperature °C / °F (for 99IV only)
Rotate the switch and press the Function button to select the
measuring function. (°C / °F)
See “Using the Function Button”

IDM 98IV & 99IV / EN
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Using The Function Buttons
Function Button
Switch
Position Function
Press
AC
Press button > 2sec to Auto Range Mode.
Press the Function button to change the function on the same
switch position.
RANGE Button

IDM 98IV & 99IV / EN
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MIN/MAX
The MAX/MIN mode records the min. and max. input values.
When the input goes below the recorded min. value or above
the recorded max. value, the meter records the new value .
Press “HOLD” button to pause the recording.
Peak HOLD (for 99IV only)
Min. Reading
Max. Reading
Press
2 sec.
Present Reading
Press
button over 2 sec.
then exit this function
In the Peak “HOLD” function ,the meter records the peak min.
value and the peak max. value when the inputs goes below the
recorded peak min. value or above the recorded peak max.
value ,the meter records the new value . Press “HOLD” button to
pause the recording.
Min. Reading
Max. Reading
Present Reading
Press
button over 2 sec.
to exit this function

IDM 98IV & 99IV / EN
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Smart HOLD
The meter will beep continuously and the display will flash if the
measured signal is larger than the display reading by 50 counts.
(However ,it can not detect across the AC and DC Voltage /
Current).
VoltSeek
Press the “VoltSeek” button to activate the VoltSeek function.
Caution
The number of dashes displaying on the display indicates the
electric field in tensity.
If no indication, voltage could still be present.

IDM 98IV & 99IV / EN
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Backlight
Press the Backlight button to turn the backlight on/off.
Auto Power Off
2
1
Reactivate the meter by rotating the switch or by pressing any
button.
Auto Power Off Disable
After idle 20 min.
Rotate the switch to the “OFF” position, Press and hold down
the Function button and turn the meter on.

IDM 98IV & 99IV / EN
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Testing the LCD Display
Rotate the switch to the “OFF” position, Press and hold down
the "SmartHOLD" button and turn the meter on.
Default Temperature Units (for 99IV only)
2
1
2
1
2
1
Rotate the switch to the “OFF” position, Press and hold down
the "RANGE" button and turn the meter on.

IDM 98IV & 99IV / EN
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Battery and Fuse Replacement
Caution
The following safety information must be observed to ensure
maximum personal safety during the operation of this instru-
ment.
1. To avoid electric shock, disconnect the test leads before
replacing the instrument fuses or batteries.
2. When replacing the instrument batteries, do not mix batteries
of different types or old and new batteries.
3. Check the battery polarity carefully when inserting the
batteries.
4. Do not short-circuit used batteries, disassemble them, or
throw them in a fire. Doing so may cause the batteries to
explode.
5. Dispose of the used batteries in accordance with local
regulations.
Fuse Replacement
Fuse 440mA (1000V)
Battery Cover
Fuse 11A (1000V)
Rear Case
Caution
Use only fuses with the following fuse rating:
440mA,1000V IR 10KA Fast acting fuse (size 35 x 10mm)
DMM-B-44/100 –10,000A, 1000 VAC, unity power factor
and 10,000A, 1000 VDC with time constant of 2.2ms
11A, 1000V IR 20KA Fast acting fuse (size 38 x 10mm)
DMM-B-11A –20,000A, 1000 VAC, power factor ≦0.2;
20,000A, 1000 VDC, time constant ≧10ms.
(size 38 x 10mm)

IDM 98IV & 99IV / EN
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Low Battery and Battery Replacement
Replace the battery as soon as the low battery indicator
appears, to avoid false reading.
Refer to the following figure to replace the batteries.
9V Battery
Battery Cover
Screw
Caution
Remove test leads from Meter before opening the battery
cover or Meter case.

IDM 98IV & 99IV / EN
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Specifications
General Specifications
Maximum voltage applied to any terminal :
1000 Vac rms or 1000 Vdc. rms
Display : 6000 counts.
Polarity Indication :
Automatic, positive implied, negative indicated.
Overrange Indication : OL
Batteries Life : 200hours ALKALINE Battery (No Backlight)
Low Batteries Indication :
Voltage drops below operating voltage, will flash.
Power Requirement : 1xPP3 9V battery
Auto Power Off : 20 minutes.
Operating Temperature : -10 ~10°C
10°C ~ 30°C (≦80% RH),
30°C ~ 40°C (≦75% RH),
40°C ~ 50°C (≦45%RH)
Storage Temperature :
-20°C to 60°C , 0 to 80% R.H. (batteries not fitted)
Temperature Coefficient :
0.15 x (Spec.Accy) / °C, < 18°C or > 28°C .
Measure : Samples 3 times per second .
Altitude : 6561.7 ft (2000m)
Safety : Complies with EN61010-1, UL61010-1,IEC 61010-1,
CAT.IV. 600V, CAT.Ⅲ. 1000V
Measurement
Category Application
I
Measurements on circuits not directly connected
to mains. Examples include: Measurements on
battery powered equipment and specially protected
(internal) mains-derived circuits.
II
Measurements on circuits directly connected to the
low voltage installation. Examples include:
Household appliances, portable tools and similar
equipment.
III
Measurements performed in the building
installation. Examples include measurements on
distribution boards, junction boxes, socket-outlets
and wiring and cables in the fixed installation.
IV
Measurements performed at the source of the low-
voltage installation. Examples include measure-
ments on primary overcurrent protection devices
and electricity Instruments

IDM 98IV & 99IV / EN
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Weight : 460g (including battery)
Dimensions (W x H x D) : 94mm x190mm x 48mm with holster.
Accessories : Battery (installed), Test leads and user manual.
(The probe assembly provided with the product are for use with
this product)
Pollution degree : 2
EMC : EN 61326-1
Shock vibration : Sinusoidal vibration per MIL-PRF- 28800F
(5 ~ 55 Hz, 3g max.)
Drop Protection : 4 feet drop to hardwood on concrete floor.
Indoor use only.
Electrical Specifications
Accuracy is ±(% reading + number of digits) at 23°C ± 5°C
< 80%RH.
AC Function
ACV and ACA specifications are ac coupled, true R.M.S.
The crest factor may be up to 3.0 at 4000 counts.
For non-sinusoidal waveforms, Additional Accuracy by
Crest Factor (C.F.) : Add 3.0% for C.F. 1.0 ~ 2.0.
Add 5.0% for C.F. 2.0 ~ 2.5.
Add 7.0% for C.F. 2.5 ~ 3.0.
(1) DC mV Voltage
Range Resolution For 98IV
Accuracy
For 99IV
Accuracy
60.00mVDC 0.01mV ± (0.1% + 5d) ± (0.08% + 5d)
600.0mVDC 0.1mV ± (0.1% + 2d) ± (0.08% + 2d)
Input Impedance : 10MΩ
Overload Protection : AC/DC1000V
(2) AC Voltage
Range Resolution For 98IV
Accuracy
For 99IV
Accuracy
Frequency
Response
600.0mVAC 0.1mV ± (1.5% + 10d) ± (1.2% + 10d) 45 ~ 500Hz
6.000VAC 0.001V ± (1.0% + 5d) ± (0.8% + 5d)
60.00VAC 0.01V ± (1.0% + 5d) ± (0.8% + 5d)
45 ~ 1KHz
600.0VAC 0.1V ± (1.0% + 5d) ± (0.8% + 5d)
1000VAC 1V ± (1.0% + 5d) ± (0.8% + 5d)

IDM 98IV & 99IV / EN
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(3) DC Voltage
Range Resolution For 98IV
Accuracy
For 99IV
Accuracy
6.000VDC 0.001V
± (0.09% + 2d) ± (0.08% + 2d)
60.00VDC 0.01V
600.0VDC 0.1V
1000VDC 1V
Input Impedance : 10MΩ
Overload Protection : AC/DC 1000V
(4) Auto-V
Range Resolution For 98IV
Accuracy
For 99IV
Accuracy
60.00mADC 0.01mA ± (1.0% + 3d) ± (0.8% + 3d)
600.0mADC 0.1mA ± (1.0% + 3d) ± (0.8% + 3d)
60.00mAAC 0.01mA ± (1.5% + 3d) ± (1.2% + 3d)
600.0mAAC 0.1mA ± (1.5% + 3d) ± (1.2% + 3d)
AC 600.0mV ranges are specified from 1 % of range to 100 %
of range.
Input Impedance: 10MΩ // less than 100pF
Overload Protection: AC/DC 1000V
Range Resolution For 98IV
Accuracy
For 99IV
Accuracy
600.0VAC/DC 0.1V
± (1.0% + 3d) ± (0.8% + 3d)
1000VAC/DC 1V
Input Impedance: Approx. 3kΩ.
AC Frequency Response: 45~1kHz(Sine Wave)
Overload Protection: AC/DC 1000V
(5) mA Current
Maximum measurement time: 10 minutes at 600mA with at
least 20 minutes rest time.
AC Frequency Response : 45 ~ 1kHz (Sine Wave)
Overload Protection: AC/DC 440mA

IDM 98IV & 99IV / EN
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(6) A Current
Range Resolution Accuracy
600.0Ω 0.1Ω ± (0.8% + 5d)
6.000KΩ 0.001KΩ
± (0.8% + 2d)
60.00KΩ 0.01KΩ
600.0KΩ 0.1KΩ
6.000MΩ 0.001MΩ
40.00MΩ* 0.01MΩ ± (1.5% + 5d)
Range Resolution Accuracy
600.0Ω 0.1Ω ± (0.8% + 5d)
Range Resolution For 98IV
Accuracy
For 99IV
Accuracy
6.000ADC 0.001A ± (1.0% + 3d) ± (0.8% + 3d)
10.00ADC 0.01A ± (1.0% + 3d) ± (0.8% + 3d)
6.000AAC 0.001A ± (1.5% + 3d) ± (1.2% + 3d)
10.00AAC 0.01A ± (1.5% + 3d) ± (1.2% + 3d)
Maximum measurement Current : 20A
Maximum measurement time :
>5A for max.3 minutes with at least 20 minutes rest time.
>10A for max.30 seconds with at least 10 minutes rest time.
AC Frequency Response : 45 ~ 1kHz (Sine Wave)
Overload Protection : AC/DC 11A
(7) Peak Hold (For 99Ⅳonly) :
Specified accuracy ± 150 digits for < 6000 counts.
Specified accuracy ± 250 digits for >= 6000 counts
(8) Resistance
* There is a little rolling less than ±50 digits when measuring >
10.00 MΩ.
Overload Protection : AC/DC 1000V
(9) Continuity
Continuity : Built-in buzzer sounds when the measured
resistance is less than 20Ω and stops when the measured
resistance is more than 200Ω, Between 20Ω to 200Ω the
buzzer may or may not sound.
Continuity Indicator : 2KHz Tone Buzzer
Response Time of Buzzer : < 500μsec.
Overload Protection : AC/DC 1000V

IDM 98IV & 99IV / EN
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(10) Diode Test
Range Resolution Accuracy
1.500V 1mV ± (1.5% + 2d)
Open Circuit Voltage : Approx. 1.8V
Overload Protection : AC/DC 1000V.
(11) Capacitance
Range Resolution Accuracy
1.000μF0.001μF± (1.2% + 5d)
10.00μF0.01μF
± (1.2% + 2d)
100.0μF0.1μF
1.000mF 0.001mF
10.00mF 0.01mF
Range Resolution Accuracy*
-40.0°C ~ 400°C 0.1°C ± (1.0% + 20d)
-40.0°F ~ 752°F 0.1°F ± (1.0% + 36d)
Overload Protection : AC/DC 1000V.
(12) Frequency Counter
Range Resolution Accuracy
100.00 Hz 0.01 Hz
± (0.1% + 2d)
1000.0 Hz 0.1 Hz
10.000 KHz 0.001 KHz
100.00 KHz 0.01 KHz
Minimum Sensitivity : > 6V (for ACV 1Hz ~ 10kHz)
> 12V (for ACV 10kHz ~ 50kHz)
unspecified (for 50KHz ~100KHz)
> 6.mA (for ACmA)
> 0.6A (for ACA)
Minimum Frequency : 1Hz
Overload Protection : AC/DC 1000V or 11A
(13) Temperature (For 99IV only)
Does not include accuracy of the thermocouple probe.
Accuracy specification assumes surrounding temperature
stable to ±1°C. For surrounding temperature changes of
±2°C,rated accuracy applies after 2 hours.
Overload Protection: AC/DC 1000V