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Clas Ohlson Ltd, The Archway, 7-9 West Street, Reading, Berkshire, RG1 1TT
UNI-T 18C Voltage Tester
Art.no 36-8125 Model UT18C
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:
• 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 tips of
the test probes.
• The voltage tester must only be used on circuits within the specified
measuring range (690 V).
• The voltage tester should not be connected to a voltage source for
more than 30 seconds at a time.
• 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 UT18C is an advanced voltage tester capable of testing AC and
DC voltages from 12 V to 690 V. The voltage tester is capable of RCD
testing, phase sequence testing and continuity testing. It is designed to
be suitable for use by professional electricians and homeowners alike.
Features
• Measures alternating current and direct current from 12 V to 690 V
• Phase sequence test
• RCD test
• Continuity test
• Overvoltage protection for voltages over 690 V AC/DC
• Has an ingress protection rating of IP65. Dust-tight and water-resistant
Instructions for use
Measuring DC voltage
Touch the tips of the test probes against the object under test.
For voltages over 12 V the voltage tester starts automatically.
If the plus sign lights up, the positive test probe (+) is connected to
the positive terminal of the object under test.
If the minus sign lights up, the negative test probe (−) is connected to
the negative terminal of the object under test.
The voltage level is indicated by LEDs: ± 12, 24, 36, 50, 120, 400, and 690.
Measuring AC voltage
Touch the tips of the test probes against the object under test.
Warning
, potential hazard. Follow the instructions in this
instruction manual.
Continuity (closed circuit test)
RCD test button
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.
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1. Voltage indicators (LED)
2. Test probe electrode (L1)
3. Electrode cap
4. Test probe electrode (L2)
5. High voltage indicators
6. Torch
7. AC voltage indicator
8. Continuity indicator
9. RCD test indicator
10. Phase sequence test indicator
11. Polarity indicator
12. LCD display
13. Battery cover
14. HOLD function
15. Torch/Buzzer on/off
16. RCD test button
17. Voltage measurement
18. Silent mode
19. HOLD function
20. Battery low, replace at earliest
convenience to prevent erroneous
readings and the risk of dangerous
consequences
21. AC voltage measurement
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22. DC voltage measurement
23. Frequency measurement
24. Voltage levels (LED)
25. High voltage
26. Continuity (closed circuit test)
27. RCD test
28. Phase sequence test
For voltages over 12 V the voltage tester starts automatically.
When the tested circuit has alternating current (AC), the AC voltage
indicator lights up.
The voltage level is indicated by LEDs: ± 12, 24, 36, 50, 120, and 400.
Note:
If the voltage under test is less than 5 V, the tester may not detect it.
Ver
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