Fluke T100/120/140
Users Manual
Carrying out Measurements
Preparation and Safety
Measures
For any test (measurement) the safety re- ferences have to be respected. Prior to any usage, a functional test has to be car- ried out.
Function test / Self test:
•Test the voltage tester on a known source.
•Connect the probes. A sound must be heard
and the Rx/Ω LED (7) must be lit. If the LED does not light up, the batteries need to be re- placed.
The voltage display of the instruments also functions when using discharged or no batteries > 20 V (LCD).
The voltage testers may no longer be used if one or several functions fails or if no functional reliability can be detected.
Remove discharged batteries from the de- vice to prevent any leaks.
The instruments are equipped with an internal load enabling the tripping of an RCD protection device of 10mA or 30mA.
For voltage tests (L towards PE) in sys- tems with RCD devices, the RCD may be triggered. To avoid RCD tripping first test between L and N (approx. 5s). Immediate- ly afterwards testing L towards PE can be carried out without RCD tripping (not T140
VDE)
Voltage Test
Safety measures have to be met
• Connect both test probes with UUT.
From a voltage of < 12V the voltage tester switches on automatically.
The voltage is indicated by LED (4) and for models FLUKE T120 and T140 also with a digital LCD (9).
For AC voltages the ”+” and
For DC voltage, the polarity of the voltage displayed refers to the instrument test probe (+).
Due to technical reasons the instrument cannot effectuate an automatic
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