RS Components IDM 66RT User manual

Instruction Manual
IDM 66RT
Digital Multimeter
EN


1
 Safety Information
Understand and follow operating instructions carefully.
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 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 function.
˙ 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 < 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
expose this product to rain or moisture.
Warning
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Safety sheet
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 Read First

2
Symbols as marked on the meter and
Instruction card
Risk of electric shock
See instruction card
DC measurement
Equipment protected by double or reinforced
insulation
Battery
Fuse
Earth
2 AC measurement
Conforms to EU directives
Do not discard this product or throw away
Caution
˙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/ / ;/position.
˙Do not expose Meter to extremes in temperature or
high humidity.
˙Never set the meter in 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.
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.

3
Front Panel Illustration
1. Voltsense Light
2. LCD display : 6000 counts
3. Push-buttons.
4. Rotary switch for turn the Power On / Off and
select the function.
5. Input Terminal for ,Hz,V,Ω,°C functions.
6. Common (Ground reference) Input Terminal.
7. Input Terminal A function .

4
Measuring AC / DC Voltage / Frequency
Dial the switch and press the Function button to select
the measuring function.
Making Basic Measurements
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.

5
Measuring Capacitance
Dial the switch to select the measuring function.
Measuring AC/DC Current
Disconnect
Dial the switch and press the Function button to
select the measuring function.

6
Measuring Continuity / Diode / Resistance
Red Black
Red Black
Red Black
Dial the switch and press the Function button to select
the measuring function.

7
Sensor K Type
Measuring Temperature °C / °F
Dial the switch and press the Function button to select
the measuring function. (°C / °F)
Set the default temperature units

8
Using The Function
Function Button
Press Function Button >2 Sec to Auto Sense Mode
PressPress
Press the Function button to change the function on
the same switch position.
Auto Sense Auto Auto
Switch
Position
Auto Sense
Auto Sense
Auto
Auto
Function
Auto
Auto

9
Range Button
Press Range Button >2 Sec to Auto Mode
Press Press
Press
Peak Hold
Press
Button > 2 sec
Leave the peak hold mode
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.

10
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).
VoltSense
Dial the switch to select the measuring function.
Caution
The number of dashes displaying on the display
indicates the electric field in density.
If no indication, voltage could still be present.

11
Auto Power Off
Wake-up the meter by dialing the switch or pressing
any button.
Disable Auto Power Off
Dial the switch to off position ,then keep the Function
button down and turn the meter on.

12
Testing LCD Monitor
Dial the switch to off position ,then keep the HOLD
button down and turn the meter on.
Fuse Replacement
Fuse type : 11A/1000V –20KA (10x38mm)

13
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
Caution
Remove test leads from Meter before opening the
battery cover or Meter case.

14
Specifications
General Specifications
Maximum voltage applied to any terminal :
1000 Vac rms or 1000 Vdc.
Display : 6000 counts.
Polarity Indication :
Automatic, positive implied, negative indicated.
Overrange Indication : "OL" or "-OL"
Batteries Life : 150hours ALKALINE Battery
Low Batteries Indication :
Voltage drops below operating voltage, will flash.
Power Requirement : AAA Size Batteryx2
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)
Measure : Samples 3 times per second .
Altitude : 6561.7 ft (2000m)
Safety : Complies with EN61010-1 / IEC61010-1,
CAT III 600V, CAT II 1000V, EN61010-2-030,
EN61326-1
CAT Application field
ⅠThe circuits not connected to mains.
ⅡThe circuits directly connected to Low-voltage
installation.
ⅢThe building installation.
ⅣThe source of the Low-voltage installation.
Weight : 320g (including battery)
Dimensions (W x H x D) : 74mm x156mm x 44mm
Pollution degree : 2
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.

15
Electrical Specifications
Accuracy is given as ±(% of reading + counts of
least significant digit) at 23°C ± 5°C, with relative
humidity Less than 80% R.H. Accuracy is specified
for a period of one year after calibration.
1. Temperature coefficient
0.15 x (Specified accuracy) / °C , < 18°C , > 28°C
2. AC Function
ACV and ACA specifications are ac coupled, true
R.M.S. The crest factor may be up to 3.0 as 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.
There is a little rolling less than 10 digits in Auto AC &
DC Test Mode when measuring AC signal.
3. DC Voltage
Range Resolution Accuracy
60.00mV 0.01mV ±(0.5% + 10 dgt)
600.0mV 0.1mV
±(0.5% + 2 dgt)
6.000V 0.001V
60.00V 0.01V
600.0V 0.1V
1000V 1V
Input Impedance : 3.5MΩ (600.0mV Range)
12MΩ (Others)
Overload Protection : 1000V for V, 600V for mV.

16
4. AC Voltage
Range Resolution Accuracy (Sine Wave)
60.00mV 0.01mV ±(1.2% + 5 dgt)
600.0mV 0.1mV
6.000V 0.001V
±(1% + 5 dgt)
60.00V 0.01V
600.0V 0.1V
1000V 1V
LCD displays 0 counts when the reading < 20 counts
(60.00mV range only)
LCD displays 0 counts when the reading < 10 counts
(other ranges)
Input Impedance : 3.5MΩ (600.0mV Range)
12MΩ // less than 100pF (Others)
Frequency Response : 45 ~ 500Hz (Sine Wave)
Overload Protection : 1000V for V, 600V for mV.
5. DC Current
Range Resolution Accuracy
6.000A 0.001A ±(1% + 2 dgt)
10.00A 0.01A
Maximum measurement time : 5 minutes at 10A
with at least 20 minutes rest time.
Overload Protection : AC/DC 11A
6. AC Current
Range Resolution Accuracy (Sine Wave)
6.000A 0.001A ±(1.5% + 5 dgt)
10.00A 0.01A
LCD displays 0 counts when the reading < 20 counts
(6.000A range)

17
LCD displays 0 counts when the reading < 10 counts
(10.00A range)
Frequency Response: 45 ~ 500Hz (Sine Wave)
Maximum measurement time: 5 minutes at 10A with
at least 20 minutes rest time.
Overload Protection: AC/DC 11A
7. Resistance
Range Resolution Accuracy
600.0Ω0.1Ω±(0.8% + 5 dgt)
6.000kΩ0.001kΩ±(0.8% + 2 dgt)
60.00kΩ0.01kΩ±(0.8% + 2 dgt)
600.0kΩ0.1kΩ±(0.8% + 2 dgt)
6.000MΩ0.001MΩ±(0.8% + 2 dgt)
40.00MΩ* 0.01MΩ±(2% + 3 dgt)
* There is a little rolling less then ±50 digits when
measuring > 10.00 MΩ.
Open Circuit Voltage :
Approx. 1.0V @ 600.0Ω ~ 600.0kΩ range.
Approx. 1.7V @ other ranges.
Overload Protection: AC/DC 600V
8. Continuity
Range Resolution Accuracy
600.0Ω0.1Ω±(0.8% + 5 dgt)
Open Circuit Voltage : Approx. 1.0V
Max. Short Current : Approx. 250uA
Continuity : Built-in buzzer sounds when measured
resistance is less than 30Ω and sounds off when
measured resistance is more than 200Ω, Between
30Ω to 200Ω the buzzer maybe sound or off either.

18
Continuity Indicator : 2kHz Tone Buzzer
Overload Protection : AC/DC 600V
9. Diode
Range Resolution Accuracy
1.500V 0.001V ±(1% + 3 dgt)
Open Circuit Voltage : Approx. 1.8V
Max. Short Current : Approx. 400μA
Overload Protection : AC/DC 600V
10. Capacitance
Range Resolution Accuracy
10.00nF 0.01nF ±(1.9% + 8 dgt)
100.0nF 0.1nF ±(1.9% + 8 dgt)
1000nF 1nF ±(1.9% + 8 dgt)
10.00µF 0.01µF ±(1.9% + 8 dgt)
100.0µF 0.1µF ±(1.9% + 8 dgt)
1000µF 1µF ±(1.9% + 8 dgt)
10.00mF 0.01mF ±(1.9% + 8 dgt)
Response Time :
Approx. 7 sec. when measuring 10.00mF
Approx. 1 sec. when measuring 100uF
Overload Protection : AC/DC 600V

19
11. Temperature
Range Resolution Accuracy
-40.0 °C ~ 400.0 °C 0.1 °C ±(1% + 10 dgt)
-40.0 °F ~ 752.0 °F 0.1 °F ±(1% + 18 dgt)
Do not include accuracy of the thermocouple probe.
Accuracy specification assumes surrounding
temperature stable to ±1 °C. For surrounding
temperature changes of ±3 °C, rated accuracy applies
after 2 hours.
Overload Protection : AC/DC 600V.
12. Frequency
Range Resolution Accuracy
6000Hz 1Hz ±(0.1% + 2 dgt)
60.00kHz 0.01kHz ±(0.1% + 2 dgt)
100.0kHz 0.1kHz ±(0.1% + 2 dgt)
Min. Sensitivity (Sine Wave, RMS Value) : 8V
Min. Frequency : 1Hz
Overload Protection : AC/DC 1000V
13. Peak Hold
Specified accuracy ± 200 digits.
Response Time of DC signal : 50ms
Response Time of AC signal : 250μs
14. VoltSense
Voltage Range : 80V ~ 1000V (At the top of the meter)