Unit UT61A Manuel utilisateur
Table of Contents
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15
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21
24
26
29
31
33
Title Page
Overview
Unpacking Inspection
Safety Information
Rules For Safe Operation
International Electrical Symbols
The Meter Structure
Rotary Switch
Functional Buttons
Display Symbols
Measurement Operation
A.DC/AC Voltage Measurement
B.DC/AC Current Measurement
C.Measuring Resistance
D.Testing for Continuity
E.Testing Diodes
F.Capacitance Measurement
G.Frequency Measurement
H.Temperature Measurement
Model UT61A/61B/61C/61D/61E: OPERATING MANUAL
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35
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42
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46
49
52
55
Title Page
I.Transistor hFE Measurement
J.EF Function
Operation of Hold Mode
RANGE Button
MAX MIN Button
PEAK Button
Data Outputting
The Use of Relative Value Mode
The BLUE Button
Turning on the Display Backlight
Sleep Mode
General Specifications
Accuracy Specifications
A.DC Voltage
B.AC Voltage
C.DC Current
D.AC Current
E.Resistance
Model UT61A/61B/61C/61D/61E: OPERATING MANUAL
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Title Page
57
59
60
60
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62
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63
65
67
F.Capacitance
G.Frequency
H.Diode Test
I.Continuity Test
J.Temperature
K.Transistor hFE
Maintenance
A.General Service
B.Replacing the Battery
C.Replacing the Fuses
USB and RS232C Serial Port
Model UT61A/61B/61C/61D/61E: OPERATING MANUAL
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This Operating Manual covers information on safety and cautions. Please read the
relevant information carefully and observe all the Warnings and Notes strictly.
Warning
Model UT61A/61B/61C/61D/61E: OPERATING MANUAL
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Except where noted, the descriptions and instructions in this Operating Manual apply
to all Model UT61A/UT61B/UT61C/UT61D/UT61E.
Unpacking Inspection
Open the package case and take out the Meter. Check the following items carefully
to see any missing or damaged part:
Description
Operating Manual
Test Lead
Point Contact K type Temperature Probe (UT61B and UT61C only)
UT61 Multi-Purpose Socket
9V Battery (NEDA1604, 6F22 or 0006P) (installed inside the Meter)
RS232C Interface Cable(except UT61A)
USB Interface Cable (Optional at extra cost) (except UT61A)
Installation Guide & Computer Interface Software (CD-ROM) (Come
along with the RS232C or USB Interface Cable) (except UT61A)
Item
1
2
3
4
5
6
7
8
Qty
1 piece
1 pair
1 piece
1 piece
1 piece
1 piece
1 piece
1 piece
Model UT61A/61B/61C/61D/61E: OPERATING MANUAL
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In the event you find any missing or damage, please contact your dealer immediately.
Safety Information
This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage
category (CAT. III 1000V, CAT. IV 600V) and double insulation.
CAT III: Distribution level, fixed installation, with smaller transient overvoltages than
CAT. IV.
CAT IV: Primary supply level, overhead lines, cable systems etc.
Use the Meter only as specified in this operating manual, otherwise the protection
provided by the Meter may be impaired.
In this manual, a Warning identifies conditions and actions that pose hazards to the
user, or may damage the Meter or the equipment under test.
A Note identifies the information that user should pay attention on.
International electrical symbols used on the Meter and in this Operating Manual are
explained on page9.
Model UT61A/61B/61C/61D/61E: OPERATING MANUAL
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Rules For Safe Operation
Warning
To avoid possible electric shock or personal injury, and to avoid possible
damage to the Meter or to the equipment under test, adhere to the following
rules:
l Before using the Meter inspect the case. Do not use the Meter if it is
damaged or the case (or part of the case) is removed. Look for cracks or
missing plastic. Pay attention to the insulation around the connectors.
l Inspect the test leads for damaged insulation or exposed metal. Check
the test leads for continuity. Replace damaged test leads with identical
model number or electrical specifications before using the Meter.
l Do not apply more than the rated voltage, as marked on the Meter, between
the terminals or between any terminal and grounding.
l The rotary switch should be placed in the right position and no any
changeover of range shall be made during measurement is conducted to
prevent damage of the Meter.
l When the Meter working at an effective voltage over 60V in DC or 30V
rms in AC, special care should be taken for there is danger of electric
shock.
Model UT61A/61B/61C/61D/61E: OPERATING MANUAL
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l Do not use or store the Meter in an environment of high temperature,
humidity, explosive, inflammable and strong magnetic field. The performance
of the Meter may deteriorate after dampened.
l When using the test leads, keep your fingers behind the finger guards.
l Disconnect circuit power and discharge all high-voltage capacitors before
testing resistance, continuity and diodes.
l Before measuring current, check the Meterís fuses and turn off the current
to be tested before connecting the Meter to the circuit. After connecting
the circuit reliably, turn the current to be tested on.
l Replace the battery as soon as the battery indicator appears. With a
low battery, the Meter might produce false readings that can lead to electric
shock and personal injury.
l When servicing the Meter, use only the same model number or identical
electrical specifications replacement parts.
l The internal circuit of the Meter shall not be altered at will to avoid damage
of the Meter and any accident.
l Soft cloth and mild detergent should be used to clean the surface of the
Meter when servicing. No abrasive and solvent should be used to prevent
the surface of the Meter from corrosion, damage and accident.
l The Meter is suitable for indoor use.
Model UT61A/61B/61C/61D/61E: OPERATING MANUAL
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l Turn the Meter off when it is not in use and take out the battery when not
using for a long time.
l Constantly check the battery as it may leak when it has been using for
some time, replace the battery as soon as leaking appears. A leaking
battery will damage the Meter.
International Electrical Symbols
AC or DC
Double Insulated
Warning. Refer to the Operating
Manual
Grounding
Deficiency of Built-In Battery
Conforms to Standards of
European Union
Model UT61A/61B/61C/61D/61E: OPERATING MANUAL
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The Meter Structure (see figure 1)
LCD Display
Functional Buttons
Blue button
Rotary Switch
Input Terminal:
figure 1
1
2
3
4
5
Model UT61A/61B/61C/61D/61E: OPERATING MANUAL
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