Unit UT205A User manual

Table of Contents
3
4
5
6
9
10
11
14
17
17
19
20
21
23
25
27
Title Page
Overview
Unpacking Inspection
Safety Information
Rules For Safe Operation
International Electrical Symbols
The Meter Structure
Functional Buttons
Display Symbols
Measurement Operation
A. AC Current Measurement
B. DC Voltage Measurement
C. AC Voltage Measurement
D. Measuring Resistance
E. Testing for Diodes and Continuity
F. Frequency and Duty Cycle (%) Measurement
(Duty Cycle: UT205A only)
G. Temperature Measurement (Model UT206A only)
Model UT205A/206A: OPERATING MANUAL
1

28
29
30
30
30
31
33
33
33
34
34
35
36
36
36
37
37
38
Title Page
Operation of Hold Mode
The Use of Relative Value Mode(Model UT206A only)
The SELECT Button
Turning on the Display Backlight
Sleep Mode
General Specifications
Accuracy Specifications
A. AC Current
B. DC Voltage
C. AC Voltage
D. Resistance
E. Diode and Continuity Test
F. Frequency
G. Duty Cycle (Model UT205A only)
H. Temperature (Model UT206A only)
Maintenance
A. General Service
B. Replacing the Battery
Model UT205A/206A: OPERATING MANUAL
2

Overview
This Operating Manual covers information on safety and cautions. Please read the
relevant information carefully and observe all the Warnings and Notes strictly.
Warning
To avoid electric shock or personal injury, read the “Safety Information” and
“Rules for Safety Operation” carefully before using the Meter.
The Model UT205A and UT206A (hereafter referred to as “the Meter”) are a low
consumption AC clamp meter with stabilize functions, safety operations, and reliable
performance.
In addition to theAC current feature, it can also measureAC/DC voltages, resistance,
diode, continuity, frequency and temperature.
Except where noted, the descriptions and instructions in this Operating Manual apply
to both the Model UT205A/UT206A.
Model UT205A/206A: OPERATING MANUAL
3

Unpacking Inspection
Open the package case and take out the Meter. Check the following items carefully
to see any missing or damaged part:
Item Description Qty
1
2
3
4
5
In the event you find any missing or damage, please contact your dealer immediately.
Operating Manual
Test Lead
Model UT206A: Point Contact Temperature Probe
9V Battery (NEDA1604, 6F22 or 0006P) (installed inside the Meter)
Vinyl Bag
1 piece
1 pair
1 piece
1 piece
1 piece
Model UT205A/206A: OPERATING MANUAL
4

Safety Information
This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage
category (CAT. II 600V / CAT III 300V) and double insulation.
CAT II: Local level, appliance, PORTABLE EQUIPMENT etc., with smaller transient
voltage overvoltages than CAT. III
CAT. III: Distribution level, fixed installation, with smaller transient overvoltages than
CAT. IV.
Under the influence of Radiated, Radio-Frequency Electromagnetic Field phenomenon,
the captioned model may malfunction and can self-recover after the test.
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 page 9.
Model UT205A/206A: OPERATING MANUAL
5

Rules For Safe Operation
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:
Check for the lever is in good condition when measuring AC current.
Must center the wire (conductor) within the transformer jaw.
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.
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.
Do not apply more than the rated voltage, as marked on the Meter, between the
terminals or between any terminal and grounding.
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.
When the Meter working at an effective voltage over 60V in DC or 42V rms in
AC, special care should be taken for there is danger of electric shock.
Warning
Model UT205A/206A: OPERATING MANUAL
6

Use the proper terminals, function, and range for your measurements.
When using the test leads, keep your fingers behind the finger guards.
Disconnect circuit power and discharge all high-voltage capacitors before testing
To avoid harms to you or damages to the Meter from electric shock, please do
not attempt to apply higher than 600V between the terminals and grounding.
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.
When servicing the Meter, use only the same model number or identical electrical
specifications replacement parts.
The internal circuit of the Meter shall not be altered at will to avoid damage of
the Meter and any accident.
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.
Turn the Meter off when it is not in use and take out the battery when not using
for a long time.
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.
Model UT205A/206A: OPERATING MANUAL
7

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
Model UT205A/206A: OPERATING MANUAL
8

International Electrical Symbols
AC (Alternating Current)
DC (Direct Current)
AC or DC
Grounding
Double Insulated
Fuse
Deficiency of Built-In Battery
Continuity Test
Diode
Conforms to Standards of European Union
Warning. Refer to the Operating Manual
High Voltage Terminal
Model UT205A/206A: OPERATING MANUAL
9

The Meter Structure (see figure 1)
(figure 1)
1.
2.
3.
4.
5.
6.
Transformer Jaws designed to pick up theAC current
flowing through the conductor.
Rotary Switch.
LCD Display.
Function Buttons
Input Terminals
Trigger. Press the lever to open the transformer
jaws. When the pressure on the lever is released,
the jaws will close.
1
2
3
4
5
6
Model UT205A/206A: OPERATING MANUAL
10

Below table indicated for information about the functional button operations.
Functional Buttons
Operation PerformedButton
Turn the display backlight on and off.
In order to avoid the hazard arising from mistaken
readings in insufficient light or poor vision, please
use Display Backlight function.
Hz% (UT205A only) 1. At ACV or DCV range
Press the button to step through ACV or DCV,
frequency and duty cycle measurement.
The Meters enters the manual ranging
measurement mode after pressing the button
at the ACV or DCV measurement range. Turn
the rotary switch or switch off the Meter to
return to auto ranging measurement mode.
Model UT205A/206A: OPERATING MANUAL
11

Operation PerformedButton
The Meter is at the DCV – 400mV range or ACV
-4V range after returning from the Hz% cycle
measurement mode.
2. At Hz range
Press the button to step through frequency and
duty cycle measurement mode.
REL (UT206A only) Press REL to enter and exit the REL mode in any
measuring mode except in frequency and duty cycle,
the Meter beeps.
UT206A: Switches between AC voltage and DC
Voltage measurement, and continuity and diode
measurement; the Meter beeps.
UT205A: Switches between continuity and diode
measurement; the Meter beeps.
SELECT
Hz% (UT205A only)
Model UT205A/206A: OPERATING MANUAL
12

Operation PerformedButton
HOLD Press HOLD to enter and exit the Hold mode in any
mode, the Meter beeps.
When it is under sleep mode, press to activate
the Meter at the effective measurement range,
e.g. continuity buzzer. Auto power off feature will
be disabled until switch off and turn on the Meter
again.
SELECT
Model UT205A/206A: OPERATING MANUAL
13

Display Symbols (see figure 2)
(figure 2)
Model UT205A/206A: OPERATING MANUAL
14

Number Meaning
1
2
3
4
5
AC
Symbol
%
Data hold is active.
Indicator for AC Voltage.
The battery is low.
Warning: To avoid false readings, which could lead to
possible electric shock or personal injury, replace the
battery as soon as the battery indicator appears.
Percent: Used for duty cycle measurements.
AIndicator for AC current
Hertz. The unit of frequency.
Kilohertz. 1x 103or 1000 hertz.
Megahertz. 1x106or 1,000,000 hertz.
Hz, kHz, MHz
Ohm. The unit of resistance.
kilohm. 1 x 103or 1000 ohms.
Megaohm. 1x106 or 1,000,000 ohms.
, k , M
6
7
Model UT205A/206A: OPERATING MANUAL
15

Number Meaning
8
9
10
11
12
Symbol
V, mV
The continuity buzzer is on.
Test of diode
Centigrade. The unit of temperature.
The relative value mode is on to display the stored
value minus the present
Volts. The unit of voltage.
Millivolt. 1 x 10-3or 0.001 volts.
Model UT205A/206A: OPERATING MANUAL
16
oC

Measurement Operation
(figure 3)
A. AC Current Measurement (See figure 3)
Warning
The measurement value obtained is wrong if testing two or more current
conductors at the same time.
Make sure the Sleep Mode is not on if you found there
is no display on the LCD after turning on the Meter.
Make sure the Low Battery Display is not on;
otherwise false readings may be provided.
Pay extra attention to the symbol which is located
besides the input terminals of the Meter before carrying
out measeurement.
Make sure you are in the proper measurement range
before carrying out measurement.
Model UT205A/206A: OPERATING MANUAL
17

1. Set the rotary switch to the current measurement mode.
2. Check the lever is in good condition.
3. Press the lever to open the transformer jaws.
4. Center the conductor within the transformer jaw.
The measured value shows on the display, it is a effective value of sine wave
(mean value response).
Note
When current measurement has been completed, disconnect the connection
between the conductor under test and the jaw, and remove the conductor away
from the transformer jaw of the Meter.
To measure current, do the following:
Model UT205A/206A: OPERATING MANUAL
18

B. DC Voltage Measurement (See figure 4)
(figure 4)
Warning
To avoid harms to you or damages to the Meter
from electric shock, please do not attempt to
measure voltages higher than 600V although
readings may be obtained.
To measure DC voltage, connect the Meter as follows:
1. Insert the red test lead into the Vterminal and the
black test lead into the COM terminal.
2. Set the rotary switch to DC voltage measurement
mode.
Red Black
3. Connect the test leads across with the object being
measured.
The measured value shows on the display.
Model UT205A/206A: OPERATING MANUAL
19

In each range, the Meter has an input impedance of 10M . This loading effect
can cause measurement errors in high impedance circuits. If the circuit impedance
is less than or equal to 10k , the error is negligible (0.1% or less).
When DC voltage measurement has been completed, disconnect the connection
between the testing leads and the circuit under test, and remove the testing leads
away from the input terminals of the Meter.
Note
AC Voltage measurement is an auto ranging measurement mode.
Follow the same procedure as the DC Voltage Measurement mode. When you
using UT206A to carry out the measurement, use SELECT button to switch
between ACV and DCV.
Note:
C. AC Voltage Measurement (See figure 4)
Model UT205A/206A: OPERATING MANUAL
20
Other manuals for UT205A
1
This manual suits for next models
1
Table of contents
Other Unit Multimeter manuals