UNI-T UT209 Operating Manual

Model UT209

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. DC Current Measurement

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Title Page

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G. AC Current 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. DC Current
H. AC Current
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 UT209 (hereafter referred to as “the Meter”) are 3
3/4 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, Resistance,
Diodes, Continuity and etc.

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Item Description Qty

1
2
3
4

English Operating Manual
Test Lead
Tool Box
9V Battery (NEDA1604A or 6LF22)

1 piece
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: 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 9.

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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.
When measurement has been completed, disconnect the connection between
the test leads and the circuit under test, remove the testing leads away
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

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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.
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.

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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

, and

Button Operation Performed
SELECT

PMAX/PMIN

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.

HOLD

Functional Buttons

Below table indicated for information about the functional button operations.

Press and hold for 2 seconds to enter that function internal
calibration.
Press the button once to start recording of maximum peak value.
Press the button again to start recording of minimum peak value.
Press and hold for one second to exit PMAX/PMIN mode.

Press once to turn the display backlight on.
It will automatically off after around 15 seconds.

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Button Operation Performed

HOLD

Hz

ZERO

Press ZERO to display the present value as stored value and
display zero. After that, all the measurement result displayed
will automatically subtract the stored value.
Press ZERO again to display the stored value.
Press and hold ZERO to exit and back to normal operation.

Turn the rotary switch or press SELECT button can also exit
Hold mode.
Press HOLD button for 2 seconds when turning on the Meter to
display full icon.

When the Meter is at V , A and A

, press the button to
measure frequency. But the frequency readings obtained from
these ranges are only for reference,

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SELECT MAX/MIN

HOLD

Hz

ZERO

%Hz

44A

1000A

40A

1000A

N/A

N/A

N/A

N/A

N/A
N/A

N/A

Rotary Switch
Positions

V

Functional Buttons

N/A
N/A

The Effectiveness of Functional Buttons

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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