UNI-T UT207, UT208 Operating Manual

Model UT207/208

OPERATING MANUAL

Table of Contents
Title Page

Overview
Unpacking Inspection
Safety Information
Rules For Safe Operation
International Electrical Symbols
The Meter Structure
Functional Buttons
The Effectiveness of Functional Buttons
Display Symbols
Measurement Operation
A. DC/AC Voltage Measurement
B. Measuring Resistance
C. Testing Diodes
D. Testing for Continuity
E. Frequency Measurement
F. Duty Cycle Measurement

4
5
6
7
10
11
12
14
15
18
18
20
22
24
26
28

Model UT207/208: OPERATING MANUAL

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Title Page

30
32
35
37
38
38
39
40
40
41
42
42
43
44
45
45

G. DC Current Measurement
H. AC Current Measurement
I. UT208 only: Temperature Measurement
Sleep Mode
Specifications
A. General Specifications
B. Environmental Requirements
Accuracy Specifications
A. DC Voltage
B. AC Voltage
C. Resistance
D. Diode Test
E. Continuity Test
F. Frequency
G. Duty Cycle
H. DC Current

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Title Page

47
48
49
49
50

I. AC Current
J. Temperature (UT208 only)
Maintenance
A. General Service
B. Replacing the Battery

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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 Safe Operation” carefully before using the Meter.

Digital Clamp Multimeter Model UT207/UT208 (hereafter referred to as “the Meter”)
are 3 5/6 digits with steady operations, fashionable structure and highly reliable
measuring instrument. The Meter uses large scale of integrated circuit with double
integrated A/D converter as its core and has full range overload protection.

The Meter can measure AC/DC Voltage, AC/DC Current, Frequency, Duty Cycle,
Resistance, Diodes, Continuity, Surge Current and etc.

UT208 has an extra temperature feature.

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Item Description Qty

1
2
3

4
5

English Operating Manual
Test Lead
Point Contact Temperature Probe (Only UT208) (This
included point contact temperature probe can only be used

up to 230

. For any measurement is higher than that, the
rod type temperature probe must be used)
Tool box
9V Battery (NEDA1604A or 6LF22)

1 piece
1 pair
1 pair

1 piece
1 piece

Unpacking Inspection

Open the package case and take out the Meter. Check the following items carefully
to see any missing or damaged part:

In the event you find any missing or damage, please contact your dealer immediately .

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Safety Information

This Meter complies with the standards IEC61010-1; IEC61010-2-032: 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
overvoltages than CAT. III.
CAT. III: Distribution level, fixed installation, with smaller transient overvoltages than
CAT. IV

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 to.
International electrical symbols used on the Meter and in this Operating Manual are

explained on page 10.

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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:

Warning

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 that the rated voltage, as marked on the Meter , between
the terminals or between any terminal and grounding. If the value to be
measured is unknown, use the maximum measurement position and reduce
the range step by step until a satisfactory reading is obtained.
When measurement has been completed, disconnect the connection between
the test leads and the circuit under test, remove the testing leads awayl

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from the input terminals of the Meter and turn the Meter power off.
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.
Do not carry out the measurement when the Meter’s back case and battery
compartment are not closed to avoid electric shock.
Do not input higher than 600V between the two Meter’s input terminal to
avoid electric shock and damages to the Meter.
When the Meter working at an effective voltage over 70V in DC or 33V rms
in AC, special care should be taken for there is danger of electric shock.
Use the proper terminals, function, and range for your measurements.
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.
When using the test leads, keep your fingers behind the finger guards.
To avoid electric shock, do not touch the bare wires, connectors, unused
input terminals or the circuit under testing during measurement.
Disconnect circuit power and discharge all high-voltage capacitors before
testing resistance, continuity and diode.

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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.
The Meter is suitable for indoor use.
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.

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International Electrical Symbols

AC (Alternating Current)
DC (Direct Current)
AC or DC
Grounding
Double Insulated
Warning. Refer to the Operating Manual
Deficiency of Built-In Battery
Continuity Test
Diode
Danger of High Voltage
Conforms to Standards of European Union

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Figure 1

The Meter Structure (see figure 1)

Hand Guards: to protect user’s hand
from touching the dangerous area.
Trigger: press the lever to open the
transformer jaws. When the pressure
on the lever is released, the jaws will
close.
Functional Buttons
Input Terminals
LCD Display
Rotary Switch
Transformer Jaw: designed to pick up
the AC and DC current flowing through
the conductor. It could transfer current
to voltage. The tested conductor must
vertically go through the Jaw center.

1.

2.

3.

4.

5.

6.

7.

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Press SELECT button to select the alternate functions including
V

,

, %Hz, A

and (UT208 only).

Starts recording of maximum and minimum values.
Press to step the display through high (MAX) and low (MIN) readings
at any mode.
Press and hold for one second to exit MAX/MIN mode.
Press again to turn the display backlight off, otherwise it will
automatically off after 1 minute.

Functional Buttons

Below table indicated for information about the functional button operations.

Button Operation Performed
SELECT

MAX/MIN

Press HOLD to enter the Hold mode in any mode, the Meter
beeps.
Press HOLD again to exit the Hold mode to return to measurement
mode, the Meter beeps.
Turn the rotary switch or press SELECT button can also exit
Hold mode.

HOLD

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Press HOLD button for 2 seconds when turning on the Meter to
display full icon.

Button Operation Performed

HOLD

When the Meter is at %Hz, V and A

, press Hz to measure

frequency and duty cycle.

Hz

ZERO Press ZERO to zeroing the display before measuring DC current.

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SELECT MAX/MIN

HOLD

Hz

ZERO

N/A

%Hz

66A

1000A

66A

1000A

N/A
N/A

N/A
N/A

N/AN/A

N/A

N/A

N/A

N/A
N/A

N/A

Rotary Switch
Positions

V

Functional Buttons

The Effectiveness of Functional Buttons

oCo

F

Not every functional buttons can be used on every rotary switch positions. Below
table describe which functional buttons can be used on which rotary switch positions

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Figure 2

Display Symbols (see figure 2)

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Number Symbol Meaning

1
2
3
4
5
6

7
8
9
10
11

INRUSH
MIN
MAX
ZERO

Indicator for Surge current
Minimum reading displayed
Maximum reading displayed
Indicator for zeroing
Data hold is active
The Meter is in the auto range mode in which the
Meter automatically selects the range with the best
resolution.
True RMS indicator
Indicator for AC voltage or current
Indicates negative reading
Indicator for DC 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.

H
AUTO

RMS
AC

DC

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Number Symbol Meaning

12
13
14
15

16

17
18

19
20
21

Sleep mode is on
Test of diode
The continuity buzzer is on

: Ohm. The unit of resistance.
k :Kilohm. 1x103 or 1000 ohms
M :Megohm. 1x106 or 1,000,000 ohms
Hz: Hertz. The unit of frequency.
KHz: Kilohertz. 1x103 or 1000 hertz.
MHz: Meghertz. 1x106 or1,000,000 hertz.
Volts. The unit of voltage.
mV: Millivolt. 1x10

-3

or 0.001 volts
Amperes (amps). The unit of current.
The unit of temperature:

: Centigrade temperature

The unit of temperature:

: Fahrenheit temperature

Duty cycle measurement

,K ,M

Hz, kHz, MHz

mV, V

A

%

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A. DC/AC Voltage Measurement (see figure 3)

To avoid harms to you or damages to the Meter from eletric shock, do not
attempt to measure voltages higher than 600V AC/DC, although readings may
be obtained.

Red

Black

Red

Black

Measurement Operation

Figure 3

Warning

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The DC Voltage ranges are: 6.6V, 66V and 600V
The AC Voltage ranges are: 6.6V, 66V and 600V
To measure DC/AC voltages, connect the Meter as follows:

Insert the red test lead into the V Hz terminal and black test lead into the COM
terminal.
Set the rotary switch to V . DC mesaurement mode and auto ranging is a
default. Press SELECT to switch to AC measurement mode.
Press Hz button to measure frequency or duty cycle, but the frequency or duty
cycle readings obtained from this range is only for reference.
Connect the test leads across with the object being measured.
The measured value shows on the display.

1.

2.

3.

4.

Note

When DC/AC voltage measurement has been completed, disconnect the connection
between the testing leads and the circuit under test and remove testing leads
from the input terminals.

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B. Measuring Resistance (see figure 4)

T o avoid damages to the Meter or to the devices
under test, disconnect circuit power and
discharge all the high-voltage capacitors before
measuring resistance.

The resistance ranges are:
660 , 6.6k , 66k , 660k , 6.6M and 66M

To measure resistance, connect the Meter as
follows:

Insert the red test lead into the V Hz terminal
and black test lead into the COM terminal.
Set the rotary switch to . Resistance
measurement is a default or press SELECT
to switch to measurement mode.

1.

2.

Red

Black

Figure 4

Warning

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Connect the test leads across with the object being measured.
The measured value shows on the display.

3.

Note

To obtain a more precise reading, you could remove the objects being tested from
the circuit when measuring.
When resistance measurement has been completed, disconnect the connection
between the testing leads and the circuit under test and remove testing leads
from the input terminals.

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C. Testing Diodes (see figure 5)

To avoid damages to the Meter or to the devices
under test, disconnect circuit power and
discharge all the high-voltage capacitors before
testing diodes.

Use the diode test to check diodes, transistors, and
other semiconductor devices. The diode test sends
a current through the semicondutor junction, then
measure the voltage drop across the junction. A
good silicon junction drops between 0.5V and 0.8V.

To test the diode out of a circuit, connect the Meter
as follows:

Figure 5

Warning

Red

Black

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Insert the red test lead into the V Hz terminal and black test lead into the COM
terminal.
Set the rotary switch to

. Press SELECT to switch to measurement
mode.
For forward voltage drop readings on any semiconductor component, place the
red test lead on the component’s anode and place the black test lead on the
component’s cathode.

1.

2.

3.

Note

To obtain a more precise reading, you could remove the objects being tested from
the circuit when measuring.
When diode testing has been completed, disconnect the connection between the
testing leads and the circuit under test and remove testing leads from the input
terminals.

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D. Testing for Continuity (see figure 6)

To avoid damages to the Meter or to the devices
under test, disconnect circuit power and
discharge all the high-voltage capacitors before
measuring continuity.

To test for continuity, connect the Meter as follows:

Insert the red test lead into the V Hz terminal
and the black test lead into the COM terminal.
Set the rotary switch to and press
SELECT button to select measurement mode.
The buzzer sounds if the resistance of a circuit
under test is less than 30 .
The buzzer may or may not sound if the
resistance of a circuit under test is between 30
to 100 .
The buzzer does not sound if the resistance of

1.

2.

3.

4.

5.

Red Black

Warning

Figure 6

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a circuit under test is higher than 100 .

Note

When continuity testing has been completed, disconnect the connection between
the testing leads and the circuit under test and remove testing leads from the
input terminals.

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E. Frequency Measurement (see figure 7)

To avoid harms to you or damages to the Meter
from eletric shock, do not attempt to measure
voltages higher than 600V AC/DC, although
readings may be obtained.

The frequency ranges are:
660Hz, 6.6kHz, 66kHz, 660kHz, 6.6MHz and 66MHz.

To measure frequency, connect the Meter as follows:

Insert the red test lead into the V Hz terminal
and the black test lead into the COM terminal.
Set the rotary switch to %Hz. Frequency
measurement mode is a default or press SELECT
to switch to Hz measurement mode.
Connect the test leads across with the object

1.

2.

3.

Red

Black

Figure 7

Warning

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Note

When frequency 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.

being measured.
The measured value shows on the display.

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F. Duty Cycle Measurement (see figure 8)

To avoid harms to you or damages to the Meter
from eletric shock, do not attempt to measure
voltages higher than 600V AC/DC, although
readings may be obtained.

The duty cycle range is: 0.1%~99.9%.
To measure duty cycle, connect the Meter as follows:

Insert the red test lead into the V Hz terminal
and the black test lead into the COM terminal.
Set the rotary switch to %Hz. Press SELECT to
switch to % measurement mode.
Connect the test leads across with the object
being measured.
The measured value shows on the display.

1.

2.

3.

Red

Black

Warning

Figure 8

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Note

When duty cycle 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.

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G. DC Current Measurement (see figure 9)

The measurement ranges of current are: 66A
and 1000A .

To measure current, do the following:

Set the rotary switch to 66A or 1000A .
Hold the Meter tight, don’t release. The Hall

components are very senstive not only to the
magnet but also to heat and machines reaction
force. Any shock will cause the changing in
reading in the short time.
Press the lever to open the transformer jaw.
Center the conductor within the transformer jaw,
then release the Meter slowly until the trasnformer
jaw is completely closed, Make sure the
conductor to be tested is placed at the center of
the transformer jaw, otherwise it will casue
deviation. The Meter can only measure one

1.

2.

3.

4.

Figure 9

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Note

If the Meter does not display 00.00 when it is at 66A range, press ZERO to
zeroing. After zeroing, it allows 10 digits bouncing reading.
When the Meter is at 1000A , it displays 0 and it is not allowed to press ZERO
to zeroing.
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.

conductor at a time, to meausre more than one condutor at a time will cause deviation.

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H. AC Current Measurement (see figure 10)

The measurement ranges of current are: 66.00A
and 1000A .
To measure AC current, do the following:

Set the rotary switch to 66A or 1000A .
Hold the Meter tight, don’t release. The Hall

components are very senstive not only to the
magnet but also to heat and machines reaction
force. Any shock will cause the changing in
reading in the short time.
Press the lever to open the transformer jaw.
Center the conductor within the transformer jaw,
then release the Meter slowly until the trasnformer
jaw is completely closed, Make sure the
conductor to be tested is placed at the center of
the

1.

2.

3.

4.

Figure 10

Warning

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transformer jaw, otherwise it will casue deviation. The Meter can only measure
one conductor at a time, to meausre more than one condutor at a time will cause
deviation.

When the measuring current >1A, press

Hz button to step through AC current,
frequency and duty cycle measurement mode. But the frequency or duty cycle
readings obtained from this range is only for reference.
Press SELECT to carry out surge current measurement.

5.

6.
To measure surge current Measurement, do the following:

Set the rotary switch to 1000A .
Press SELECT when the Meter displays the minimum readings. The Meter then
displays “-----’’ means it is ready to carry out surge current measurement.
Turn on the electrical equipments at that time to measure the moment start up
current.
Press and hold SELECT for one second to exit surge current measurement mode.

When the Meter is at surge current measurement, it is locked to the highest
measurement range.

1.

2.

3.

4.

5.

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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.

Note

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I. UT208 only: Temperature Measurement (see figure 11)

The temperature measurement range: -40 ~1000
and -40 ~1832 .

To measure temperature measurement, connect the
Meter as follows:

Insert the red temperature probe into the V Hz
terminal and the black temperature probe into
the COM terminal.

Set the rotary switch to

. Press SELECT to

switch between

and measurement mode.
Place the temperature probe to the object being
measured.
The measured value shows on the display.

1.

2.

3.

Figure 11

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When the Meter is at range, it beeps to remind user to insert temperature
probe.
The Meter automatically displays the room temperature when the temperature
probe is inserted but without any input.
The included point contact temperature probe can only be used up to 230 .
For any measurement is higher than that, the rod type temperature probe must
be used.
When the temperature measurement has been completed, disconnect the
connection between the temperature probe and the object under test, and remove
the temperature probe away from the input terminals of the Meter.

Note

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Sleep Mode

To preserve battery life, the Meter automatically turns off if you do not turn the rotary
switch or press any button for around 15 minutes.

The Meter beeps 3 times in one minute before entering Sleep Mode and long beep
one time just before entering Sleep Mode.

The Meter can be activated by turning the rotary switch or pressing the button based
on ‘‘The Effectiveness of Functional Buttons’’ on page 14

If the Meter is activated by pressing button, the Meter will keep the measurement
value before entering Sleep Mode.

Press MAX/MIN, LIGHT or

Hz to turn on the Meter can disable the Sleep Mode

feature.

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Specifications

A. General Specifications:

Maximum Voltage between any Terminals and grounding: Refer to different range
input protection voltage.
Display: 3 5/6 digits LCD display, Maximum display 6666.
Polarity: Auto
Overloading: Display OL or –OL.
Battery Deficiency: Display .
Sampling: 3 times per second.
Measurement Deviation: The conductor being meaured is not placed in the center
of the jaw during AC/DC current measurement, it will cause extra 1% deviation
based on the stated accuracy.
Drop Test: 1 meter drop test passed.
Max. Jaw Size: 55mm diameter.
Projected Max. Current conductor size: 45mm diameter.
Electro-Magnetic: When carrying out measurement near the electro-magnetic, it
may cause unstable or wrong reading.
Power: 1 x 9V battery (6LF22 1604A)

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Battery Life: typically 150 hours (alkaline battery)
Dimensions: 285.3mm x 105mm x 44.5mm
Weight: Approximate 533g (battery included)

B. Environmental Requirements

The Meter is suitable for indoor use.
Altitude: Operating: 2000m
Storage: 10000m
Safety/ Compliances: IEC61010-1; IEC61010-2-032. CAT.II 600V, CAT.III 300V
over voltage and double insulation standard, pollution degree 2.
Temperature and humidity:
Operating:

0

~30 ( 80%R.H)

30

~40 ( 75%R.H)

40

~50 ( 45%R.H)

Storage:

-20

~+60 ( 80%R.H)

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Accurate Specifications

Accuracy: (a% reading + b digits), guarantee for 1 year.
Operating temperature: 23

5

Relative humidity: 80%R.H
Temperature coefficient: 0.1x(specified accuracy)/1

A. DC Voltage

Range

6.600V

66.00V

600.0V

Resolution
1mV
10mV
100mV

Accuracy

(0.8%+1)

Overload protection

600V DC/AC

Remark: Input Impedance: 10MΩ

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B. AC Voltage

Range

6.600V

66.00V

600.0V

Resolution
1mV
10mV
100mV

Accuracy

(1.2%+5)

Overload protection

600V DC/AC

Remarks:

Input Impedance: 10M
Frequency Response: 40Hz~400Hz
Change to AC:
Combine AC and True RMS response method. Input sine wave to adjust. Non
sine wave must follow the below data to adjust:

Peak factor: 1.4~2.0, add 1.0% on the stated accuracy
Peak factor: 2.0~2.5, add 2.5% on the stated accuracy
Peak factor: 2.5~3.0, add 4.0% on the stated accuracy.

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C. Resistance

Range

660.0Ω

6.600kΩ

66.00kΩ

660.0kΩ

6.600MΩ

66.00MΩ

Resolution

0.1Ω
1Ω
10Ω
100Ω
1kΩ
10kΩ

Accuracy

(1.2%+2)

(1%+2)

(1.2%+2)
(1.5%+2)

Overload protection

250VAC

D. Diode Test

Range Resolution

1mV

Accuracy

0.5V~0.8V (Open
circuit voltage
approx. 3.0V)

Overload protection

250VAC

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E. Continuity Test

Range Resolution

0.1

Accuracy
Around 30Ω,the
buzzer beeps.
(Open circuit voltage
approx. –1.2V)

Overload protection

250VAC

Remark:

The buzzer may or may not beeps when the resistance of a circuit under test is
between 30Ω~100Ω.
The buzzer does not beep when the resistance of a circuit under test is > 100Ω

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F. Frequency

Range

660.0Hz

6.600kHz

66.00kHz

660.0kHz

6.600MHz

66.00MHz

Resolution

0.1Hz

0.001kHz

0.01kHz

0.1kHz

0.001MHz

0.01MHz

Accuracy

(0.1%+3)

Overload protection

250VAC

Remarks:
Input Sensitivity (a) as follows:
When a 10Hz: the Meter does not response
When 10Hz < a 100kHz: 300mV rms
When a >100kHz: 600mV rms

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G. Duty Cycle

Range

0.1%~99.9%

Resolution

0.1%

Accuracy
For reference only

Overload protection
250VAC

H. DC Current

Range

66.00A
1000A

Resolution

0.01A
1A

Accuracy

(2%+40)
(2%+8)

Overload protection
250VAC

The operating temperature must be 0 ~ 40 when measuring current.

Warning

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Remarks:

If the reading is positive, the current direction is from bottom to up. See figure
10, the front case face up while the bottom case face down. Hold the Meter tight,
do not release. The Hall components are very sensitive not only to the magnet
but also to heat and machines reaction force. Any shock will cause the changing
in reading in the short time. Follow the below procedure to measure current will
be more precise:

1. Turn off the current of tested conductor.

2. Hold the Meter tight and press the lever to open the transformer jaw. Center
the conductor within the transformer jaws, then release the Meter slowly until
the transformer jaw is completely closed. Make sure the conductor to be tested
is placed at the center of the transformer jaw, otherwise it will cause +1.0%
deviation based on the stated accuracy.

3. Press ZERO button to display zero.

4. Turn on the current of tested conductor reading the stable value of clamp
meter.

5. The obtained reading will be more precise.

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I. AC Current

Range

66.00A
1000A

Resolution

0.01A
1A

Accuracy

(2%+40)
(2%+8)

Overload protection

250VAC

Frequency
Response
50Hz ~ 60Hz

The operating temperature must be 0 ~40 when measuring current.

Remarks:

It may have unstable or wrong sensed readings, it will not affect measurement
result.
Hold the Meter tight, do now release. The Hall components are very sensitive
not only to the magnet but also to heat and machines reaction force. Any shock
will cause the changing in reading in the short time.
Change to AC:
Combine AC and True RMS response method. Input sine wave to adjust.

Warning

Model UT207/208: OPERATING MANUAL

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Non sine wave must follow the below data to adjust:
Peak factor: 1.4~2.0, add 1.0% on the stated accuracy.
Peak factor: 2.0~2.5, add 2.5% on the stated accuracy
Peak factor: 2.5~3.0, add 4.0% on the stated accuracy.

J. Temperature (UT208 only)

Range
40

~1000

-40 ~1832

Resolution
1

1

Overload protection

250VAC

Accuracy

-40 ~0 : (3%+4)
0 ~400 : (1%+3)
400 ~1000 :

(2%+10)

-40

~32 : (3%+8)

32

~752 : (1%+6)

752

~1832 :

(2%+18)

Model UT207/208: OPERATING MANUAL

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This section provides basic maintenance information including battery replacement
instruction.

Do not attempt to repair or service your Meter unless you are qualified to do
so and have the relevant calibration, performance test, and service information.

To avoid electrical shock or damage to the Meter, do not get water inside the
case.

A. General Service

Periodically wipe the case with a damp cloth and mild detergent. Do not use
abrasives or solvents.
To clean the terminals with cotton bar with detergent, as dirt or moisture in the
terminals can affect readings.
Turn the Meter power off when it is not in use.
Take out the battery when it is not using for a long time.
Do not use or store the Meter in a place of humidity , high temperature, explosive,
inflammable and strong magnetic field.

MAINTENANCE

Warning

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B. Replacing the Battery (see figure 12)

Figure 12

T o avoid false readings, which could lead
to possible electric shock or personal
injury , replace the battery as soon as the
battery indicator “ ” appears.

Make sure the transformer jaw and the
tets leads are disconected from the circuit
being tested before opening the case
bottom.

Warning

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To replace the battery:

1. Turn the Meter off and remove all the connections from the input terminals

2. Turn the Meter’s front case down.

3. Remove the screw from the battery compartment, and separate the battery
compartment from the case bottom.

4. Take out the old battery and replace with a new 9V battery (6LF22, 1604A).

5. Rejoin the case bottom and the battery compartment, and reinstall the screw.

Model UT207/208: OPERATING MANUAL

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* END *

This operating manual is subject to change without notice.

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Copyright 2007 Uni-Trend Group Limited.

All rights reserved.
Manufacturer:

Uni-Trend Technology (Dongguan) Limited
Dong Fang Da Dao
Bei Shan Dong Fang Industrial Development District
Hu Men Town, Dongguan City Guang Dong Province
China
Postal Code: 523 925

Headquarters:
Uni-Trend Group Limited
Rm901, 9/F, Nanyang Plaza
57 Hung To Road Kwun Tong Kowloon, Hong Kong
Tel: [phone]
Fax: [phone]
Email: [e-mail]
http://www.uni-trend.com

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