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UNITED KINGDOM •
Customer Service
e-mail: customerservice@clasohlson.co.uk
Returns Address
Clas Ohlson Ltd, The Archway, 7-9 West Street, Reading, Berkshire, RG1 1TT
Ver
. 20201126
UNI-T Voltage Tester
Art.no 36-8124 Model UT22B-EU
Please read the entire instruction manual before using the product and then
save it for future reference. We reserve the right for any errors in text or images
and any necessary changes made to technical data. If you have any questions
concerning technical problems please contact our Customer Services.
Safety
First read the entire instruction manual and make sure that you have understood
all the information regarding safety and maintenance in order to be able to
use the voltage tester in a safe way.
Warning:
• To avoid electric shocks, pay special attention when the measured voltage
exceeds the safe working voltage threshold (36 V).
• Do not measure voltages over 400 V. The Hazardous Voltage indicator
will turn on when the measured voltage exceeds 50 V and flash when
the voltage exceeds the potentially lethal voltage threshold of 400 V.
• The voltage tester should not be connected to a voltage source for more
than 5 seconds at a time.
• The function of the voltage tester should be checked on a known voltage
source before measuring is commenced.
• Only grip the test probes by the handles. Never touch the electrodes (tips)
of the text probes.
• The voltage tester must only be used on circuits within the specified
measuring range (400 V).
• Do not use the voltage tester if it is in any way damaged or malfunctioning.
• Do not use the voltage tester in a wet or humid environment. Accurate
readings can only be guaranteed within the temperature and humidity
ranges specified in the
Specifications
section below.
• Safety can no longer be guaranteed if the voltage tester does not display
reliable readings.
• When using the voltage tester, only touch the gripping surfaces of the test
probes, never touch the metal tips.
Symbols
Product description
The UT22B-EU is an automatic voltage tester capable of
testing AC/DC voltages from 12 V to 400 V. It is designed
to be suitable for use by professional electricians and
homeowners alike. Typical applications of the voltage
tester include testing the voltage of a car battery
(direct current) and testing the voltage of a wall socket
(alternating current).
1. Negative test electrode (−)
2. Positive test electrode (+)
3. High and hazardous voltage indicator (> 50 V)
4. Voltage level indicators
5. AC/DC voltage indicators
If the positive indicator comes on, the positive test probe (+) is connected to
the positive terminal of the object under test.
If the negative indicator comes on, the negative test probe (−) is connected to
the negative terminal of the object under test.
Note:
If the voltage under test is less than 10 V, the tester may not detect it.
Care and maintenance
• In the event of abnormal operation or malfunction, stop using the voltage
tester immediately and contact your retailer.
• Repairs must only be carried out by a qualified electrician.
• Clean the voltage tester by wiping it with a clean, dry cloth.
• Store the voltage tester in a dry and clean place out of children’s reach.
• Make sure that the voltage tester is dry before using it.
Responsible disposal
This symbol indicates that the product should not be disposed
of with general household waste. This applies throughout
the entire EU. In order to prevent any harm to the environment
or health hazards caused by incorrect waste disposal,
the product must be handed in for recycling so that the material
can be disposed of in a responsible manner. When recycling
your product, take it to your local collection facility or contact
the place of purchase. They will ensure that the product is disposed of in
an environmentally sound manner.
Specifications
Measuring range
12−400 V AC/DC
Frequency range AC
0−60 Hz
Polarity detection
Automatic
Standard compliance
EN 61326-1:2013, EN 61326-2-2:2013,
EN 61243-3:2014
Measurement category
CAT III 400 V
Impedance (internal resistance)
17kΩ@ELV a.c (<50 V AC = 17kΩ)
Recovery time
<5 s
Overvoltage protection
> 400 V AC/DC
IP rating
IP54
Indication steps
± 12, 24, 50, 120, 230, 400 V AC/DC
Polarity indicators
DC positive: (+) Plus sign lit,
DC negative: (−) Minus sign lit,
AC: (+/−) Both the AC and DC voltage
indicators lit
Operating temperature / humidity
−15 to 45 °C, RH < 85 %
Storage temperature
−20 to 60 °C
Dimensions
265 x 42 x 27 mm
Weight
136 g
Warning
, potential hazard. Follow the instructions in this instruction
manual.
The voltage tester should not be disposed of in your bin as
household waste. The voltage tester should be regarded as
waste electrical and electronic equipment and taken to your local
household waste recycling centre for disposal in accordance with
local regulations.
If you are unsure how to proceed, contact your local council.
The voltage tester complies with European Union standards.
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2
3
4
5
Instructions for use
The function of the voltage tester should be checked on a known voltage
source before measuring is commenced.
• To test the DC voltage measurement function: use a battery with a known
voltage, such as a car battery.
• To test the AC voltage measurement function: use a known voltage, such
as a 230 V wall socket.
Note:
Do not use the voltage tester if it is not functioning properly.
Measuring AC voltage
Touch the tips of the test probes against the object under test.
For AC voltages over 12 V both the positive (plus sign) and negative (minus
sign) indicators will light. The AC/DC voltage indicators come on in stages
depending on the magnitude of the voltage.
Measuring DC voltage
Touch the tips of the test probes against the object under test.
For DC voltage over 12 V either the positive or negative indicator will turn on
depending on the polarity. The AC/DC voltage indicators come on in stages
depending on the magnitude of the voltage.
Features
• Measures alternating current and direct current from
12 V to 400 V.
• Automatic identification of AC/DC voltage
• Automatic identification of DC voltage polarity
• Hazardous voltage indicator
• Complies with the following standards:
RoHS, CE, and
CAT III 400 V
• Has an ingress protection rating of IP54. Harmful amounts
of dust and water can not enter the voltage tester and
cause insulation faults.
