IDEAL INDUSTRIES 61-340 Manuale utente

IDEAL INDUSTRIES, INC.

TECHNICAL MANUAL

MODEL: 61-340

MODEL: 61-342

Multimeter Service Information

The Service Information provides the following information:

• Precautions and safety information

• Specifications

• Basic maintenance (cleaning, replacing the battery and fuses)

• Performance test procedures

• Calibration and calibration adjustment procedures

Form Number: TM61340-2

Revision: 2. Date: November 2007

Form Number 2TM61340-2 Rev November 2007

TABLE OF CONTENTS Page

Introduction 1

Precautions and Safety Information 1

Symbols 1

Safety 2

Specifications 3

General Specifications 3

Measurement Characteristics 4

Voltage Specifications 4

Current Specifications 4/5

Resistance, Diode, Continuity, Capacitance Specifications 6

Frequency, Temperature Specifications 7

Auto Power Off, Data Hold/Backlight, SELECT, RANGE, REL, Hz/DUTY, MAX/MIN 7/8

Physical and Environment Characteristics 9

Certifications and Compliances 9

Required Equipment 10

Basic Maintenance 11

Opening the Meter Case 11

Replacing the Battery 11

Replacing Fuses 12

Fuse Replacement 12

Cleaning 12

Performance Tests 13

Testing the Display 13

Testing the Voltage Function 14/15

Testing the DC Current Functions 15/16

Testing the AC Current Functions 16/17

Testing the Resistance Function 18

Testing the Capacitance, Diode, Continuity Functions 18/19

Testing the Frequency Function 20

Testing the DUTY CYCLE Function 20

Testing the Temperature Function 21

Calibration 22

Calibration Adjustment, DCV, ACV DCA and Temperature Functions 22/23

Page 1

Introduction

Warning

To avoid shock or injury, do not perform the verification tests or calibration procedures described in

the manual unless you are qualified to do so.

The information provided in this document is for the use of qualified personnel only.

Caution

The 61-340 serials contain parts that can be damaged by static discharge.

Follow the standard practices for handling static sensitive devices.

For additional information about IDEAL INDUSTRIES, INC. and its products, and services, visit IDEAL

INDUSTRIES, INC. web site at:

www.idealindustries.com

Precautions and Safety Information

Use the meter only as described in the Service Manual. If you do not do so, the protection provided by the

meter may be impaired. Read the “Safety Information” page before servicing this product.

In this manual, a Warning identifies conditions and actions that pose hazard (s) to the user; a Caution

identifies conditions and actions that may damage the meter or the test instruments.

The Symbols

The symbols used on the meter and in this manual are explained in Table A.

Table A. The Symbols

Risk of electric shock

See instruction card (Caution information)

DC measurement

Equipment protected by double or reinforced

insulation

Low Battery indicator

Earth

AC measurement

Conforms to EU directives

Form Number 2TM61340-2 Rev November 2007

Page 2

SAFETY

Review the following safety precautions to avoid injury and prevent damage to this product or any

products connected to it. To avoid potential hazards, use the product only as specified.

For operating instructions, see the 61-340 / 61-342 Digital Multimeter Instruction Manual.

CAUTION: These statements identify conditions or practices that could result in damage to the

equipment or other property.

WARNING: These statements identify conditions or practices that could result in personal injury or

loss of life.

Use proper Fuse. To avoid fire hazard, use only the fuse type and rating specified for this product.

Do not operate without covers. To avoid personal injury, do not apply any voltage or current to the

product without covers in place.

Do Not Exceed the maximum rated input limits, as marked on the meter.

Electric overload. Never apply a voltage to a connector on the product that is outside the range

specified for that connector.

Avoid electric shock. To avoid injury or loss of life, do not connect or disconnect probes or test leads

while they are connected to a voltage source.

Do not operate in wet/damp conditions. To avoid electric shock, do not operate this product in wet or

damp conditions.

Use great care when you are required to make measurements on live circuits that exceed 50V.

Form Number 2TM61340-2 Rev November 2007

Page 3

SPECIFICATIONS

All specifications are warranted unless noted typical and apply to the 61-340 & 61-342

Stated accuracies are at 23°C±5°C at less than 75% relative humidity and without the battery indicator

displayed.

General specifications

Characteristics Description

Display count 3 3/4 digit liquid crystal display, max count 4000

Numeric update rate 2.5 times / sec

Polarity display Automatic

Over range display “OL” is displayed

Low battery indicator is indicated

Automatic power-off time Automatic power off ≈10minutes

Power source 9.0V battery: types- NEDA 1604, JIS006P, IEC6F22

for both 61-340 and 61-342

*Maximum input voltage 1000Vrms CAT III between V and COM

*Maximum floating voltage

1000Vrms CAT III between any terminal and earth ground

Maximum input current 400mA between µA /mA and COM

Overload protection mA connector 500mA (250V) fast blow fuse.

Overload protection 10A connector 10A (250V) fast blow fuse.

V connector V, V, Ω, , , , Hz

µA /mA connector µA, mA, Temp

Temperature Coefficient 0.1×(Spec. Accuracy) per °C, <18°C or >28°C

Battery Life Alkaline 9V, ≈200 hours for 61-340

Alkaline 9V, ≈150 hours for 61-342

Form Number 2TM61340-2 Rev November 2007

Page 4

Measurement Characteristics

Accuracy is ±(% reading + number of digits) at 23°C ± 5°C, less than 75% R.H.

(1) DC Volts(for 61-340 / 61-342)

Range Resolution Accuracy Over voltage

protection

400.0mV 0.1mV ±(0.8% reading + 3 digits)

4.000V 1mV

40.00V 10mV

400.0V 100mV

±(0.8% reading + 1 digits)

1000V 1V ±(1.0% reading + 3 digits)

1000VDC or 750VAC

Input Impedance: 10MΩ

(2) AC Volts (61-340/61-342)

Range Resolution Accuracy Over voltage

protection

400.0mV 0.1mV ±(1.2%+8)

4.000V 1mV

40.00V 10mV

400.0V 100mV

1.0% + 5

750V 1V ±(1.2%+5)

1000VDC or 750VAC

Input Impedance: 10MΩ

AC Conversion Type: 61-340: Average sensing rms indication calibrated to the sine wave input.

61-342: AC conversion is True RMS responding, calibrated to a sinusoidal

waveform

Crest Factor: C.F. = Peak/RMS

For non-sinusoidal waveform, C.F. > 2 add ±1% to accuracy,

Frequency response: 40～400Hz

(3a) DC micro-amp and milli-amps (for 61-340 / 61-342)

Range Resolution Accuracy Input Protection

400.0µA 0.1μA

4000µA 1μA ±(0.8% reading + 2 digits)*

40.00mA 10μA

400.0mA 0.1mA

±(0.8% reading + 3 digits)*

500mA, 250V Fast

Blow Fuse

Overload Protection: mA Input: 500mA, 250V Fast Blow fuse. (61-340 / 61-342)

Form Number 2TM61340-2 Rev November 2007

Page 5

(3b) DC Current (61-340 / 61-342)

Range Resolution Accuracy Input Protection

4.000A 0.001A

10.00A* 0.01A

±(1.5% reading + 5 digits) 10A, 250V Fast Blow

Fuse

Overload Protection: A Input: 10A, 250V Fast Blow fuse. (61-340 / 61-342)

*Caution: Do not make high current measurements on the 10A scale for longer that 15 seconds. This should be

followed by a 15 minute cool down period. Exceeding 15 seconds may cause damage to the meter and/or the test

leads.

(4a) AC micro-amp and milli-amps Current (61-340 / 61-342)

Range Resolution Accuracy Input Protection

400.0µA 0.1μA

4000µA 1μA

±(1.5% reading + 5 digits) *1

40Hz

~400Hz

40.00mA 10μA

400.0mA 0.1mA

±(2.0% reading + 5 digits) *1

40Hz

~400Hz

500mA, 250V Fast

Blow Fuse

Overload Protection: μA / mA Input: 500mA,250V Fast Blow fuse. (61-340 / 61-342)

(4b) AC Current (61-340 / 61-342)

Range Resolution Accuracy Input Protection

4.000A 0.001mA

10.00A* 0.01mA

±(2.5% reading + 5 digits) *1

40Hz ~400Hz

10A, 250V Fast Blow

Fuse.

Overload Protection: A Input: 10A (250V) fast blow fuse.

AC Conversion Type: AC conversions are True RMS responding, calibrated to the sine wave input.

*1The specified accuracy is for sine wave at full scale and non-sine wave at half scale with crest factor

up to 2.

*Caution: Do not make high current measurements on the 10A scale for longer that 15 seconds. This should be

followed by a 15 minute cool down period. Exceeding 15 seconds may cause damage to the meter and/or the test

leads.

Page 6

(5) Resistance (for 61-340 / 61-342)

Range Resolution Accuracy Over voltage

protection

400.0Ω*10.1Ω±(1.2% reading + 5 digits)

4.000KΩ1Ω

40.00KΩ10Ω

400.0KΩ100Ω

±(1.0% reading + 2 digits)

4.000MΩ1KΩ±(1.2% reading + 2 digits)

40.00MΩ*210KΩ±(2.0% reading + 5 digits)

600Vrms

Open circuit Voltage: 0.44V approx.

*1< 5 digit of reading rolling.

*2< 2% of reading rolling.

(6) Diode Check and Continuity (for 61-340 / 61-342)

Range Resolution Accuracy Max. Test

Current

Max. Open

Circuit Voltage

1mV Not specified *<1mA, approx. 2.5V, approx.

Overload Protection: Not specified

Continuity: Built-in buzzer sounds when resistance is less than approximately 120 Ωwith a response

time of approximately 100 msec.

(7) Capacitance (for 61-340 / 61-342)

Range Resolution Accuracy Over voltage

Protection

40.00nF 10pF

REL：±(3% reading + 10 digits)

400.0nF 100pF

4.000μF 1nF

40.00μF 10nF

±(3% reading + 5 digits)

400.0μF 100nF

4000μF *110μF ±(20% reading + 5 digits) *2

*1In this range the reading maybe rolling within specification.

*2Specify reading < half full scale of range.

Note:The meter selects the proper range automatically. Each measurement takes about one

second per range, Readings >40.00μF will take ≈8 seconds or greater

Form Number 2TM61340-2 Rev November 2007

Page 7

(8) Frequency (for 61-340 / 61-342)

Range Resolution Sensitivity Accuracy Overload

protection

10.00Hz 0.01Hz

100.0Hz 0.1Hz

1.000KHz 1Hz

10.00KHz 10Hz

100.0KHz 100Hz

1.000MHz 10KHz

0.7V rms *

4.000MHz 10KHz 3.0V rms

Frequency:

(± 0.1% + 3 digit) 600V rms

(9) Temperature: Type K thermocouple (for 61-340 / 61-342)

Range Resolution Accuracy Overload

protection

-50 to 750 ºC1ºC ±3.0% ± 3 ºC

-58 to1382 ºF1ºF ±3.0% ± 5 ºF Not Specified

(10) Auto Power Off (APO)

If the meter idles for more than ≈10 minutes, the meter automatically turns the power off.

(11) Data Hold/Backlight

Press this button less than 2 seconds the meter enter data hold mode and “ HOLD ” symbol appear

on LCD, and the momentary value while pressing the button display on LCD. Press it again to exit this mode

and “ HOLD ” symbol disappear on display. As data hold function, this button do not effect on diode

and continuity test function. The secondary function of this button is backlight enable and disable. If you

press it more than 2 seconds, the backlight will be turn on and press it more than 2 seconds again will make

the backlight off.

(12) SELECT

There are several functions at one rotary switch position, press SELECT button to select

function you want, It allowable to select AC or DC voltage, AC or DC current, Resistance ,Diode , Audible

continuity or capacitance, ℃or ℉temperature measurement.

(13) RANGE

When power on, meter at auto range mode, press RANGE button you can select measurement range

you want. Range is run up with times of pressing RANGE button until its max, then return the min range.

Press RANGE button more than 2 seconds , the meter return to auto range. This button do not effect on

frequency, duty cycle, capacitance, diode & continuity test and temperature measurement.

Form Number 2TM61340-2 Rev November 2007

Page 8

(14) REL

Press this button the meter enter relative measuring state and “Δ” symbol appear on LCD.

The result of the relative measurement is the difference between measuring value and

reference value. The reference value is produced same as momentary reading value when

pressing this button, press it again to exit this state and “Δ” symbol disappear on display, and

this button do not effect on frequency, diode and continuity test function. Press this button less

than 2 seconds the meter enter relative measuring state and “Δ” symbol appear on LCD.

(15) Hz/DUTY

When you make frequency, AC voltage or AC current measurement, press this button to switch Hz or

duty cycle test mode.

(16) MAX/MIN

Press MAX/MIN button the meter enter Maximum value / Minimum value record mode and “ MAX ” / ”

MIN ” symbol appear on LCD, the LCD will display the maximum value or minimum value science pressing

the button always. Press MAX/MIN more than 2 seconds button again to exit this mode and “ MAX ” / ” MIN ”

symbol disappear on display. This button do not effect on diode and continuity test function, capacitance

measurement, frequency measurement.

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