UNI-T UT601 Operating Manual

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Model UT601: OPERATING MANUAL

Table of Contents
Title Page

Overview
Unpacking Inspection
Safety Information
Rules For Safe Operation
International Electrical Symbols
The Meter Structure
Functional Buttons
Display Symbols
Measurement Operation
A. Measuring Resistance
B. Capacitance Measurement
C. Diode and Continuity Test
D. Transistor hFE Measurement
General Specifications
Accuracy Specifications
A. Resistance Test
B. Capacitance Test
C. Continuity & Diodes
D. Transistor
Maintenance
A. General Service
B. Replacing the Battery
C. Replacing the Fuse

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Model UT601: OPERATING MANUAL

To avoid electric shock or personal injury, read the
“Safety Information” and “Rules for Safety Operation”
carefully before using the Meter.

Warning

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Model UT601: OPERATING MANUAL

Overview

This Operating Manual covers information on safety and
cautions. Please read the relevant information carefully
and observe all the Warnings and Notes strictly.

Digital Capacitance Meter Model UT601 (hereafter referred
to as “the Meter”) is a 3 1/2 digits with steady operations,
fashionable design and highly reliable hand-held measuring
instrument. The Meter can also measure resistance,
transistor, diode and continuity buzzer.

The Meter has a broad capacitance measurement range
and precise accuracy. It can be used in measuring the
circuit designed capacitance of cable, switch and PCB
layout.

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Model UT601: OPERATING MANUAL

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

English Operating Manual
Test Clip
9V Battery (NEDA1604, 6F22 or 006P)
(installed)

1 piece
1 pair
1 piece

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

Safety Information

This Meter complies with the standards EMC EN61326.

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 8.

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Model UT601: OPERATING MANUAL

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 clips for damaged insulation or
exposed metal. Check the test clips for continuity.
Replace damaged test clips with identical model
number or electrical specifications before using the
Meter.
Do not apply voltage to the Meter.
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 apply more than 30Vrms between the
terminals and the grounding to avoid electric shock
and damage to the Meter.
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.
Disconnect circuit power and discharge all high­voltage capacitors before testing resistance,
continuity, capacitance or diodes.
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.
Remove test clips from the Meter and turn the Meter
power off before opening the Meter case.

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Rules For Safe Operation

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Model UT601: OPERATING MANUAL

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 power off when it is not in use and
take out the battery when not using for a long time.
Please 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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Model UT601: OPERATING MANUAL

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Model UT601: OPERATING MANUAL

International Electrical Symbols

Grounding
Double Insulated
Deficiency of Built-In Battery.
Continuity Test.
Diode.
Capacitance Test
Fuse.
Warning. Refer to the Operating Manual.
Conforms to Standards of European Union.

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Model UT601: OPERATING MANUAL

The Meter Structure (see figure 1)

Functional Buttons

1. LCD Display

2. Capacitance Zero Adjustment Switch

3. Transistor Jack

4. Resistance, Diode and Continuity Buzzer Input Terminal

5. Capacitance Input Terminal

6. Small Value Capacitance Jack

7. Rotary Switch .

8. Power Button

(figure 1)

Below table indicated for information about the functional
button operations.

Button Description

Press the Power down to turn the Meter on. Press
the Power again to turn the Meter power off.

Power

1

2

3

6

7

8

5

4

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Model UT601: OPERATING MANUAL

Display Symbols (see figure 2)

(figure 2)

Data hold is active.
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.
Transistor Test
Test of diode.
The continuity buzzer is on.
Farad. The unit of capacitance
pF: Picofarad. 1x10

-12

or 0.000000000001
farads.
nF: Nanofarad. 1x10

-9

or 0.000000001 farads.

µF: Microfarad.1x10

-6

or 0.000001 farads.

mF: Millifarad. 1x10-3 or 0.001 farads.

: Ohm. The unit of resistance

k

: kilohm. 1x103 or 1000 ohms

M

: Megaohm. 1x106 or 1,000,000 ohms
H: Henry. The unit of Inductance.
mH: Millihenry. 1x10-3 or 0.001 henry.

No.

Symbol

Meaning

1
2

3
4
5
6

7

8

pF, nF,
F, mF

, k ,

M

H, mH

mF

µF
nF

pF
mH
ΩH

kΩMΩ

3
1

2
5
4

6
8
7

Make sure the Low Battery Display is not on,
otherwise false readings may be provided.
Pay extra attention to the symbol, before carrying
measurement, which is located besides the input
terminals of the Meter.

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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.

Warning

The resistance ranges are 20 , 200 , 2k , 20k , 200k ,
2M , 20M , 200M and 2000M .

To measure resistance, please connect the Meter as
follows:

Insert the red test clip into the terminal and
the black test clip into COM terminal.
Set the rotary switch to range.
Connect the test clips across with the object being
measured.
The measured value shows on the display.

1.

2.

3.

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Model UT601: OPERATING MANUAL

Measurement Operation

A. Measuring Resistance (see figure 3)

(figure 3)

When measuring at 20Ω and 200Ω range, the test clips
can add 0.1 to 0.3Ω error to resistance. To obtain precise
readings in these low-resistance measurement, that is
the range 20Ω and 200Ω, short circuit the input terminals
beforehand and record the reading obtained (called this
reading as X). (X) is the additional resistance from the
test clips.
Then use the equation:
measured resistance value (Y) – (X) = precision readings
of resistance.
The Meter displays “1” when there is no input, for
example, open circuit situation.
For high resistance measurement (>1MΩ), it is normal
taking several seconds to obtain a stable reading.
When resistance measurement has been completed,
disconnect the connection between the testing clips and
the circuit under test and remove the testing clips away
from the input terminals of the Meter.

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Model UT601: OPERATING MANUAL

Note

To avoid damage to the Meter or to the equipment
under test, disconnect circuit power and discharge
all high-voltage capacitors before measuring
capacitance. Use the DC Voltage function to confirm
that the capacitor is discharged.

Warning

The Meter’s capacitance ranges are:200pF, 2nF, 20nF,
200nF, 2µF, 20µF, 200µF, 2mF and 20mF.

To measure capacitance, connect the Meter as follows:

Set the rotary switch to F measurement mode. If the
value of capacitor to be measured is unknown, use the
minimum measurement position 200pF and increase
the range step by step until a satisfactory reading is
obtained and the overloading icon “1” is disappeared.
Insert the red test clip into the CAP + terminal and black
test clip into the CAP – terminal. For small value
capacitor measurement, insert the capacitor into the

Small Value Capacitance Jack.

Use the red test clip to clip the capacitor’s positive and
the black test clip to clip the capacitor’s negative when
the capacitor has polarity.

1.

2.

3.

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Model UT601: OPERATING MANUAL

B. Capacitance Measurement (see figure 4)

(figure 4)

Do not short the test clips to avoid the consumption of
battery.
To minimize the effect of capacitance stored in the test
clips, the test clips should be as short as possible and
use the Small Value Capacitance Jack when measuring
small value of capacitance.
When capacitance measurement has been completed,
disconnect the connection between the testing clips and
the circuit under test and remove the testing clips away
from the input terminals of the Meter.

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When measuring small value capacitor, that is 200pF,
2nF and 20nF, first open circuit the test clips or the

Small Value Capacitance Jack, then turn the
Capacitance Zero Adjustment Switch to adjust zero.

The measured value shows on the display.

4.

5.

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Model UT601: OPERATING MANUAL

Note

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 diodes and
continuity.

Testing Diodes

Warning

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

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

Insert the red test clip into the terminal and
the black test clip into the COM terminal.
Set the rotary switch to .
For forward voltage drop readings on any semiconductor
component, place the red test clip on the component’s
anode and place the black test clip on the component’s
cathode.
The display shows the diode forward voltage drop’s
nearest value.

1.

2.

3.

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Model UT601: OPERATING MANUAL

C. Diode and Continuity Test (see figure 5)

(figure 5)

red

In a circuit, a good diode should still produce a forward
voltage drop reading of 0.5V to 0.8V; however, the
reverse voltage drop reading can vary depending on the
resistance of other pathways between the probe tips.
Connect the test clips to the proper terminals as said
above to avoid error display. The LCD will display “1”
indicating open-circuit for wrong connection. The unit of
diode is Volt (V), displaying the positive-connection
voltage-drop value.
When diode measurement has been completed,
disconnect the connection between the testing clips and
the circuit under test and remove the testing clips away
from the input terminals of the Meter.

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To test for continuity, connect the Meter as below:

Insert the red test clip into the terminal and
the black test clip into the COM terminal.
Set the rotary switch to .
Connect the test clips across with the object being
measured.
The beeper comes on continuously when the test
resistance <120 .
The Meter displays the value of the test resistance.

The LCD displays “1” indicating the circuit being tested
is open.
When continuity test has been completed, disconnect
the connection between the testing clips and the circuit
under test and remove the testing clips away from the
input terminals of the Meter.

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Model UT601: OPERATING MANUAL

Note

Testing for Continuity

1.

2.

3.

4.

5.

Note

To measure transistor, set up the Meter as follows:

Check that the transistor is PNP or NPN type.
Insert the transistor to be measured to the corresponding
Transistor Jack.
The Meter displays the tested transistor’s nearest value.

When transistor measurement has been completed,
disconnect the connection between the testing clips and
the circuit under test and remove the testing clips away
from the input terminals of the Meter.

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Model UT601: OPERATING MANUAL

D. Transistor hFE Measurement (see figure 6)

(figure 6)

1.

2.

3.

Note

NPN

PNP

hFE

Fused Protection for capacitance Input Terminal: 0.315A,
250V, fast type fuse, 5x20 mm.
Maximum Display: Display: 1999.
Measurement Speed: Updates 2-3 times /second.
Polarity: Auto. (Display “-“ when negative)
Overloading: Display “1”
Range: Manual Ranging
Capacitance range zero adjustment:
The range around 20pF
Temperature:

Operating: 0oC~40oC (32oF ~104oF).
Storage: -10oC~50oC (14oF ~122oF).

Relative Humidity:

75% @ 0oC - 30oC;
50% @ 31oC - 40oC.

Altitude:

Operating: 2000 m.

Storage: 10000 m.
Battery Type:
One piece of 9V NEDA1604 or 6F22 or 006P.
Battery Deficiency: Display
Dimensions (HxWxL): 172 x 83 x 38 mm.
Weight: Approximate 310g (battery included).
Safety/Compliances: EMC EN61326.
Certification: , UL & CUL pending.

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Model UT601: OPERATING MANUAL

General Specifications

Accuracy: (a% reading + b digits), guarantee for 1 year.
Operating temperature: 23oC 5oC.
Relative humidity: <75%.
Temperature coefficient: 0.1 x (specified accuracy) / 1oC.

When measuring 20Ω and 200Ω range, the test clips
can add 0.1 to 0.3Ω error to resistance. To obtain precise
readings in these low-resistance measurement, that is
the range 20Ω and 200Ω, short circuit the input terminals
beforehand and record the reading obtained (called this
reading as X). (X) is the additional resistance from the
test lead.
Then use the equation:
measured resistance value (Y) – (X) = precision readings
of resistance

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Model UT601: OPERATING MANUAL

Accuracy Specifications

A. Resistance Test

Range Resolution Accuracy

Overload

Protection

20Ω

200Ω

2kΩ

20kΩ

200kΩ

2MΩ

20MΩ

200MΩ

2000MΩ

0.01Ω

0.1Ω

0.001kΩ

0.01kΩ

0.1kΩ

0.001MΩ

0.01MΩ

0.1MΩ
1MΩ

(1%+5)

(0.8%+3)

(0.8%+1)

(1%+2)
[5%(rdg-10)+10]
Reference only

250V rms

Remarks:

Overload Protection

0.315A, 250V, fast type fuse, 5x20 mm
If the Meter can not adjust to zero, you could use the
tested values minus the open circuit value to get the
correct measurement value.
Measure of Capacitance: 1F=103mF = 106µF = 109nF
= 1012pF

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Diode:
Open Circuit Voltage around 2.8V.
Continuity
Around < 120 , beeper comes on continuously.

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Model UT601: OPERATING MANUAL

B. Capacitance Test

Range Resolution Accuracy

Testing

Frequency

200.0pF

2.000nF

20.00nF

200.0nF

2.000µF

20.00µF

200.0µF

2.000mF

20.00mF

0.1pF

0.001nF

0.01nF

0.1nF

0.001µF

0.01µF

0.1µF

0.001mF

0.01mF

(0.5%+10)

(2%+2)

800Hz

80Hz

8Hz

Remarks:

C. Continuity & Diodes

Range Resolution

Overload
Protection

Function

Diode

Continuity

1mV

1

250V rms

Remarks:

The display value is the tested transistor’s nearest value
(0~1000β).

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Model UT601: OPERATING MANUAL

D. Transistor

Range Resolution

Overload
Protection

hFE

Vce 2.8V
I bo

10µA

250V rms

Remarks:

Testing

Condition

1

β

This section provides basic maintenance information
including battery and fuse 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.

Warning

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 and take
out the battery when not using for a long time.
Do not store the Meter in a place of humidity, high
temperature and strong magnetic field.

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Model UT601: OPERATING MANUAL

Maintenance

A. General Service

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

Warning

Turn the Meter power off and remove all connections
from the terminals.
Remove the screw from the battery compartment, and
separate the battery compartment from the case bottom.
Remove the battery from the battery compartment.
Replace the battery with a new 9V battery (NEDA1604,
6F22 or 006P)
Rejoin the case bottom and battery compartment, and
reinstall the screw.

1.

2.

3.

4.

5.

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Model UT601: OPERATING MANUAL

B. Replacing the Battery (see figure 7)

(figure 7)

To replace the battery:

To avoid electrical shock or arc blast, or personal
injury or damage to the Meter, use specified fuses
ONLY in accordance with the following procedure.

Warning

To replace the Meter’s fuse:

Turn the Meter power off and remove all connections
from the terminals.
Remove the screw from the battery compartment, and
separate the battery compartment from the case bottom.
Remove the screws from the case bottom, and separate
the case top from the case bottom.
Remove the fuse by gently prying one end loose, then
take out the fuse from its bracket.
Install ONLY replacement fuses with the identical type
and specification as follows and make sure the fuse is
fixed firmly in the bracket.
Fuse 1: 0.315A, 250V, fast type fuse, 5x20 mm.
Rejoin the battery compartment and the case top, and
reinstall the screw.
Rejoin the case bottom and case top, and reinstall the
screws.

1.

2.

3.

4.

5.

6.

7.

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Model UT601: OPERATING MANUAL

C. Replacing the Fuse (see figure 8)

(figure 8)

SCREW

** END **

Replacement of the fuses is seldom required. Burning of
a fuse always results from improper operation.

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Model UT601: OPERATING MANUAL

Copyright 2005 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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Model UT601: OPERATING MANUAL