Fervi F010 User manual

USE AND
MAINTENANCE MANUAL
Sound level meter
Art. F010
ORIGINAL INSTRUCTIONS
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MEASURING
INSTRUMENTS
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FOREWORD
Read this manual before any operation
ORIGINAL INSTRUCTIONS
Before starting any operation it is compulsory to read this instruction manual. The guarantee
of smooth operation and full performance of the instrument is highly dependent on the
application of all the instructions contained in this manual.
Operator Qualification
The workers responsible for using this device must have all the necessary information,
education and receive adequate training regarding safety, including:
a) The conditions of use of the equipment;
b) Foreseeable abnormal situations, pursuant to Article 73 of Legislative Decree
81/08.
We guarantee the instrument complies with the specifications and technical
instructions described in the Manual on the date of its issuance (shown in this page).
On the other hand, the instrument may also be subject to important technical changes
in the future, without the manual being updated.
Therefore, see FERVI for information about modifications that could be implemented.
REV. 2 December 2013
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MEASURING
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CONTENTS
1 TECHNICAL SPECIFICATIONS ................................................................... 4
1.1 Technical support..........................................................................................................4
2 DESCRIPTION OF THE CONTROLS ............................................................. 5
2.1 Output and input plug ...................................................................................................6
3 MEASURING PROCEDURE .......................................................................... 7
3.1 Memory ......................................................................................................................... 7
4 CALIBRATION ........................................................................................... 8
5 BATTERY REPLACEMENT ........................................................................... 8
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MEASURING
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1 TECHNICAL SPECIFICATIONS
Screen LCD, 10 mm (0.4”) in height
Functions SL, LNLeq
Frequency range 31.5 Hz ÷8000 Hz
Measuring range
30 ÷ 130 dB (A)
32÷130 dB (C)
35÷130 dB (LINEAR)
Resolution 0,1 dB
Control characteristics Fast, slow and stop of peak
Setting the noise level 30 - 130 dB
Response time 1 second
Memory Maximum value
Operating temperature 0~40°C
Power supply 4x1.5V AA batteries (um-3)
Size 212 x 69 x 32 mm
Weight 300 g. including batteries
Accessories: Case
Manual
1.1 Technical support
For any problems or concerns, please do not hesitate to contact the dealer who sold the item.
Precautions
Do not disassemble the instrument, inside there are no replaceable parts for normal
users.
Do not expose the instrument to the weather and do not pour liquids on it of any kind
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MEASURING
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2 DESCRIPTION OF THE CONTROLS
Figure 1 - Main parts of the sound level meter
3.1 Probe / microphone
3.2 Fast / slow switch
3.3 Resistance for setting the noise level
3.4 Start switch
3.5 Measurement / setting switch
3.6 Off-scale LED
3.7 Screen
3.8 Calibration
3.9 D.C. output (0~2V)
3.10 Output / input
3.11 Weighting LED
3.12 Function LED
3.13 Weighting / Memory button
3.14 Function selection LED
3.15 Function selection button
3.16 Battery cover
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2.1 Output and input plug
The output / input plug is an OPTIONAL ACCESSORY and has three main functions:
1. By connecting plug 1 to the DC output (Ref. 3-9 Figure 1) it is possible to use plug 3
(red line) as a linear output that can be used to record, print or analyse.
2. By connecting an external filter to plug 2 (black line), it is possible to use plug 3 (red
line) as a linear output that can be used to record, print or analyse.
3. When using electrical signals to test the functioning of the instrument, use plug 2 as an
input, effectively disconnecting the microphone (Ref. 3-1 Figure 1) as soon as plug 1 is
connected to the sound level meter via the output / input connection (Ref. 3-10 Figure
1).
Black line
Output filter
Plug 2
Plug 3
Input filter
or registration
or analyser
(linear output)
Red line
Meter
sound
Plug 1
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MEASURING
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3 MEASURING PROCEDURE
Put the power switch (Ref. 3-4 Figure 1) into the ON position.
Setting the off-scale: position the switch for the measurement / setting (Ref. 3-5
Figure 1) to "SET", change the value on the display as required (up to a maximum of
between 120 dB and 130 dB) by adjusting the resistance (Ref. 3-3 Figure 1).
Always check that the selected function is correct. To select the function, press the
function selection button (Ref. 3-15 Figure 1).
A) When the "SL" LED is lit, noise levels can be measured instantaneously.
B) When the "Leq" LED is lit, it is possible to measure the average level of noise
recorded in a minute.
C) When the "LN" LED is lit, it is possible to transfer the output data for statistical
analysis.
Always check that the weighting selected is correct. To select the weighting, press the
weighting / memory button (Ref. 3-13 Figure 1).
A) When the "A" LED is illuminated, weighting A has been selected.
B) When the "C" LED is illuminated, weighting C has been selected.
C) When the "LIN" LED is illuminated, you have selected the weighting required to
transfer linear measurements externally.
D) When "FILTER" button is illuminated an external filter can be entered.
NOTE: the "A" LED will turn on automatically when the "Leq" or "LN" function has been
selected
Position the "fast / slow" switch in the correct position.
Position the switch to "MEAS" (measurement).
If the "Hold/memory" button is pressed, the "MAX" symbol appears on the display: it is
now possible to read the maximum noise instantaneously.
3.1 Memory
The maximum measured value is automatically stored on your instrument. To view it, turn off
the sound level meter and press the Hold/memory button.
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4 CALIBRATION
Before being delivered, the instrument is calibrated. For future calibration, please contact our
Technical Assistance centre without hesitation.
The sound level calibrator is ND9, while the acoustic generator is ND6, both are
optional accessories.
Position the weighting of the sound level meter to "C" or "LIN", when using the ND6
generator (piston generator) that generates a frequency of 250Hz.
5 BATTERY REPLACEMENT
When the symbol appears on the display indicating a lower voltage than 5V it is
necessary to change the batteries of the sound level meter. To change the batteries, remove
the cover (Ref. 3-16 Figure 1) and take out the batteries. Then insert 4 new 1.5V AA alkaline
batteries and close the cover.
Precautions
Do not dispose of batteries with other waste but disposed of them through appropriate
channels so as not to pollute the environment.
If the instrument is not going to be used for a long period of time, remove the batteries
to prevent them from losing power.
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