Product Information
Digital circuit tester. Multi-function digital voltmeter & circuit tester.
Handy tool which enables you to test for voltages present up to 240 Volts, enables you to test for a line break and to ensure that appliances are earthed.
You must always hold the handle when using this tool, never touch the uninsulated probe of the unit.
How it works
AC Measurement (Testing a power socket)
Place the metal probe of the unit into the right hand aperture of the socket as you face it, making sure that it is in contact with the metal contact inside the socket. Hold the handle of the unit so that your finger is in contact with the "Direct Test" contact of the handgrip. If the supply is "Live" the digital display will indicate the value of the voltage present. If no reading is obtained, ensure that the probe is making connection with the contact inside the socket and re-test. Before inspecting any electrical appliance or fittings suspected of having a fault, isolate the circuit on which you suspect the fault to be present by removing the fuse in the mains' fusebox, or by switching off the appropriate circuit breaker.
Testing for a Line Break
If you are experiencing a power failure to an appliance which is connected to a supply that is known to be functioning, there may be a break in the cable from the plug to the appliance. First check that the plug fuse is in working order by replacing it with a new one of the correct current rating. If this proves unsuccessful, hold the digital tester so that your finger touches the "Inductance Break-Point Test" contact then run the digital tester probe along the outside of insulated cable, starting at the socket (supply) end. A symbol will be shown on the digital tester display. The symbol will disappear as the tester probe moves to the other side of a break in the cable. The appliance should then be disconnected from the supply (un-plugged) and the necessary repair carried out.
Earth Line Indication
An appliance requires an earth connection unless it has been designed with double insulation. To check for a satisfactory earth connection the appliance must first be plugged into the supply.
Touch the tester probe on a metal area on the appliance or fitting whilst holding the tester lightly, ensuring that you do not touch either of the contacts of the tester handle. If the appliance is earthed satisfactorily there should be little or no indication in the display. A fault in the earthing will produce a symbol and probably a low voltage indication in the display.
N.B. Most power sockets have apertures protected to avoid insertion of a conductor. In this event it will be necessary to depress the earth protector using an insulated tool to enable the insertion of the tester. Switched sockets must be in the "ON" position to provide a reading. The highest in the series of numbers displayed will indicate the voltage present illustrated as follows
WARNING - ELECTRICITY CAN KILL - IF IN ANY DOUBT CONSULT A QUALIFIED ELECTRICIAN.
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