Elma Instruments Elma 1500B, Руководство пользователя

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4.0 Carrying out
Measurements
4.1 Preparation and
Safety Measures
For any test (measurement) the safety
references have to be respected as men-
tioned in point 2.0. Prior to any usage, a
functional test has to be carried out.
Test leads and test probes may only be
touched at handle surfaces provided.
Absolutely avoid the direct contact of the
test probes.
Function test / Self test:
• Test the voltage tester on a known
source.
• Connect test probes. An acoustic sound
must be audible and the LED Rx/
Ω (7)
must be illuminated.
The voltage display of the instruments
Elma 1500B also functions when using
discharged or no batteries.
The voltage testers may no longer be
used if one or several functions fails or if
no functional reliability can be detected.
4.2 Voltage Test
Safety measures a mentioned in para-
graph 2.0 have to be met.
• Connect both test probes with UUT.
• As from a voltage of > 12V the voltage
tester switches on automatically.
The voltage is displayed via LEDs(3).
For DC voltages the ”+” and ”-” LEDs (6)
are illuminated and an aditional signal
sound is audible.
The instruments are equipped with an
LED row comprising: 12V, 24V, 50V, 120V,
230V, 400V, 690V.
For DC voltage, the polarity of the voltage
displayed refers to the instrument test
probe (+).