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Voltcraft VC870 Manual

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% (4-20mA) Loop current measuring for current signals of 4 - 20 mA in percent
°C Degrees Celsius
°F Degrees Fahrenheit
Ω Ohm (unit of electric impedance)
kΩ Kilo Ohm (exp.3)
MΩ Mega Ohm (exp.6)
nF Nanofarad (unit of electric capacity, exp.-9, symbol )
µF Microfarad (exp.-6)
mF Millifarad (exp.-3)
Symbol for the capacity measuring range
WARNING! Warning symbol for voltages >30 V AC and >42 V DC, Low imp function and wrongly
connected measuring lines
Cosinus-Phi (electric effective factor)
Symbol for data transfer (active RS232 interfaces)
Bar graph (only for V, A, Ω )
Symbol for the integrated fuses
Measuring
Do not exceed the maximum permitted input values. Do not touch any circuits or
parts of circuits if there could be voltages higher than 25 V ACrms or 35 V DC pre-
sent within them. Danger to life!
Before measuring, check the connected measuring lines for damage such as, for
example, cuts, cracks or squeezing. Defective measuring cables must no longer be
used. Danger to life!
During measuring, do not grip beyond the tangible grip range markings present on
the test prods.
Measuring is only permitted when the battery and fuse compartment is closed. When
the compartment is open, all measuring jacks are mechanically secured against ins-
ertion.
You may only connect the two measuring lines to the measuring device that are
required for measuring operation. Remove all measuring lines not required from the
device for safety reasons.
Measurements in electrical circuits >50 V/AC and >75 V/DC must only be carried out
by specialists and technically instructed personnel who are familiar with the relevant
regulations and the ensuing risks.
As soon as “OL” (overload) appears on the display, you have exceeded the measuring range.
… 42 …


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