OPERATION AND
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MAINTENANCE MANUAL
Contact type digital tachometer
Art. C069
ORIGINAL INSTRUCTIONS
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 tool 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.
Page 2 of 7
REV. 2 December 2013
MEASURING
INSTRUMENTS
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CONTENTS
1 TECHNICAL SPECIFICATIONS ...................................................................4
1.1 Technical support..........................................................................................................4
2 DESCRIPTION OF THE INSTRUMENT .........................................................5
3 MEASURING PROCEDURE.......................................................................... 6
3.1 Measuring the number of revolutions ...........................................................................6
3.2 Measuring peripheral speed ..........................................................................................6
3.3 Measuring peripheral length .........................................................................................6
4 MEMORISED DATA DISPLAY KEY .............................................................. 7
5 REMOVAL AND REPLACEMENT OF BATTERIES ...........................................7
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MEASURING
INSTRUMENTS
Peripheral
Peripheral
0.01m/min.
(from 0.05 to 999.99
Selection of measuring
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1 TECHNICAL SPECIFICATIONS
Accurate measurement of speed at high resolution.
The backlit screen means that the instrument can be operated in any lighting
conditions. Digital screen that offers an error-free reading.
Wide measuring range and high resolution.
Computerised miniaturised circuit to provide a fast and high-precision measurement.
The last value, the maximum value and the minimum value will be automatically stored
and can be displayed by pressing the "F" key.
The instrument can be connected to a 6V DC power supply if used for a long time.
Low battery indicator:
The various terminals can be disconnected at any time.
The new terminal for controlling the peripheral speed can measure the length of wires,
cables and ropes.
The shape has been carefully designed for easily handling.
Screen: 5 digits, height 18mm (0.7"), LCD
Tachometer from 0.5 to 9,999 rpm
Measuring range:
Resolution:
Accuracy: ± 0.05% +1 digit
Sampling time 0.8 seconds over 60 RPM
range
Power supply 4 x 1.5 AA
Temperature of use 0 - 40°C
Memory Last value. Maximum value / Minimum value.
Size 210 x 74 x 37 mm
speed
Length from 0.5 to 9,999 m
Tachometer 0.1 rpm (from 2.5 to 999.9 rpm)
speed
Length 0.2 m
from 0.5 to 9,999 m/minute
1 rpm (over 1000 rpm)
m/min.)
0.1m/min. (over 100m/min.)
Automatic
Weight 300 gr (0.67 lb)
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
Page 4 of 7
MEASURING
INSTRUMENTS
I
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2 DESCRIPTION OF THE INSTRUMENT
Figure 1 - Main parts of the tachometer
A
B
C Shaft
D Measuring button
E Function selection button
F Stored data display button
G Screen
H Battery compartment
I Socket for 6 V DC power supply
Terminal for measuring peripheral speed
Terminal for measuring revolutions per minute rpm
Page 5 of 7
MEASURING
INSTRUMENTS
fervi.com
3 MEASURING PROCEDURE
3.1 Measuring the number of revolutions
Move the function switch to position "RPM".
Install the terminal for measuring r/min, RPM
Press the measuring button and lightly press the detection pin (B) against the central
hole of the rotating shaft, making sure to keep it properly aligned. Release the
measuring button when the reading has stabilised (approximately 2 seconds).
3.2 Measuring peripheral speed
Move the function switch to the position "M/MIN".
Install the (wheel) terminal for measuring peripheral speed.
Press the measuring button and rest the peripheral speed measuring wheel on the
external point to be measured. Release the measuring button when the reading has
stabilised.
3.3 Measuring peripheral length
Move the function switch to position "m" and install the appropriate terminal and
proceed as in Section 4.2, part C).
Note: when performing measurements of speed and length by contact and the external part
of the terminal by contact touches the object, the measurement is real.
Page 6 of 7
MEASURING
INSTRUMENTS
fervi.com
4 MEMORISED DATA DISPLAY KEY
Immediate reading of the last stored value and the maximum and
minimum values by pressing the "F" key.
"UP" indicates the maximum value and "dn" indicates the minimum
value; "LA" indicates the last value read.
5 REMOVAL AND REPLACEMENT OF BATTERIES
If the instrument is not going to be used for a long period of time, it is
advisable to remove the batteries.
When the batteries are low, the battery symbol appears on the display
1. Slide the cover off the back of the device and remove the batteries.
2. Install new batteries (4X1, 5V AA/uM-3) correctly and close the lid
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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