Precautions For Use - Chauvin Arnoux C.A 1725 Manual De Comienzo Rapido

Meanings of the symbols used on the device
WARNING, DANGER!
Refer to the user manual whenever you see this symbol.
This marking certifies compliance with the European "Low Voltage" and "Electromagnetic
Compatibility" directives (73/23/CEE and 89/336/CEE).
In the European Union, this product is subject to sorting for the recycling of electrical and
electronic equipment in accordance with WEEE directive 2002/96/EC.
You have just purchased a C.A 1725 / C.A 1727 Tachomater, thank you for your confidence.
For best results from your instrument :
•
Read these quick start manual carefully.
•
Observe the precautions for use.

PRECAUTIONS FOR USE

For measurements without mechanical contact :
Before using the tachometer, check that the front sighting window is perfectly clean.
The minimum detection distance is 1cm; but take care to avoid the immediate vicinity of any moving part,
which might be dangerous for the operator and for the device.
For measurements with mechanical contact :
Keep your hands as far as possible from the moving part.
Do not press too hard, since this might brake the moving part and result in an erroneous measurement.
For measurements on shaft ends, position the device as close as possible to the axis of the shaft.
For measurements using an external input :
The use of the external connector requires observance of the rules concerning the interconnection of
counting devices and industrial interference.
Use shielded wires connected to an earth that is not exposed to the switching transients of power
systems.
The received interference must not exceed the amplitude of the hysteresis fixed in the device (250mV).
The external input is limited to a common mode of not more than 50 volts.
ATTENTION :
The external sensor connector uses the same earth as the USB digital output
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