Chauvin Arnoux C.A 847 Manual De Instrucciones página 9

4.1. PROCEDURE
■ Remove the protective cover from the prods. Then switches the instrument
on; you will notice the "ON" indicator lamp lights up.
Note that the measuring prods may cause injury if not handled with caution.
■ Insert the prods firmly into the material and read the measurement result:
For wood, insert the prods so that the current circulates parallel to the wood
fibres.
If the material moisture level is less than 6%, none of the LEDs light up.
If the percentage is between 6 and 23%, take the reading directly from the
right-hand column opposite the LED which is lit.
If the percentage is over 23%, the top LED will light up, indicating that you
should press on the red button on the front of the instrument. Then read
the percentage (between 24 and 100%) indicated in the left-hand column
opposite the LED which is lit.
Since the measurement result depends on the density and nature of the
material, its value is essentially one of comparison between the dry and moist
condition of this material.
■ To switch the instrument off, simply replace the protective cover.
■ If the "LOW BATT." LED stays continuously lit, this means the battery should
be changed straight away.
4.2. MEASURING PRECAUTIONS
The surface of the material must be dry otherwise the measurement result will
be incorrect. It is in fact the internal percentage of moisture in the material that
we wish to determine.
■ Measurement range: 0 to 100% of moisture in the wood or W.M.E.
■ Display: 20 LEDS on 2 scales: 6 to 23% and 24 to 100%.
■ Intrinsic uncertainty : ± 2 LEDS.
■ Battery status: "LOW BATT." LED lights up when the battery power supply is
not sufficient to take a correct measurement.
■ Power supply: 9 V battery (6LR61 or 6F22 type).
■ Size / weight: 195 x 60.5 x 38 mm / 160 g with battery.
■ Operating environment: 0 to 50 °C, <80% RH.
■ Storage environment: -20 to +60°C, 0 to 80% RH., without the battery.
■ Operating sufficiency: 30 hours.
■ Safety: Cat III 24 Vac/dc as per IEC/EN 61010-2-030 or BS EN 61010-2-030.
■ Electromagnetic compatibility:
Emissions and immunity in an industrial setting compliant with IEC/EN 61326-
1 or BS EN 61326-1.
5. CHARACTERISTICS
4. USE
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