Sealey TA050 User manual

DIGITAL TACHOMETER
(CONTACT / NON-CONTACT)
INSTRUCTIONS FOR MODEL: TA050
Thank you for purchasing a Sealey product. Manufactured to a high standard this product will, if used according to these instructions
and properly maintained, give you years of trouble free performance.
TA050 - 2 - 051107
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS AND CAUTIONS.
USE THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE
DAMAGE AND/OR PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. PLEASE KEEP INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY INSTRUCTIONS
2. INTRODUCTION
1.1. GENERAL SAFETY
!WARNING! Ensure that Health & Safety, local authority and
general workshop practice regulations are adhered to when using
this equipment.
!WARNING! DO NOT aim the laser beam at your or another person’s
or animal’s eye and beware of reflections from mirrors or other shiny
surfaces.
"Familiarise yourself with the applications, limitations, and potential
hazards of the tachometer.
"Keep the tachometer clean and in good condition.
"Protect the tachometer from electro-magnetic fields, static
electricity and high temperatures.
"Remain vigilant when using the tachometer on, or near, a running
engine where there are rotational parts such as belts, pulleys and
fans.
"Maintain correct balance and footing. Ensure the floor is not
slippery and wear non-slip shoes.
"Remove ill fitting clothing. Remove ties, watches, rings, and other
loose jewellery, and contain and/ or tie back long hair.
#DO NOT wear gloves near rotational parts.
#DO NOT get the tachometer wet or use in damp or wet locations
or areas where there is condensation.
#DO NOT use the tachometer for any purpose other than for which
it is designed.
#DO NOT allow untrained persons (particularly children) to operate
the tachometer.
#DO NOT operate the tachometer when you are tired or under the
influence of alcohol, drugs or intoxicating medication.
SPECIFICATION
Rotational Speed - Contact. . . . . . . . . . . . . . . . . . . . . . 2 - 20,000rpm
Rotational Speed - Non-contact . . . . . . . . . . . . . . . . . . 2 - 99,999rpm
Total Revolutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 99,999
Sampling Time . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5s @ > 120rpm
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±(0.05% + 1 digit)
Surface Speed. . . . . . . . . . . . . . . . . . . . . . . . . . m/m, in/m, ft/m, yd/m
Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . m, in, ft, yd
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hz
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PP9
External Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6VDC
Laser Output . . . . . . . . . . . . <1mW, Wavelength 630-670nm Class ll
Professional quality laser instrument for fast and accurate
measurement of rotational speed with or without contact. Will also
measure total revolutions, frequency, surface speed and distance.
Ten selectable data set memories each with maximum, minimum,
and average or single value reading as appropriate. Supplied with
reflective tape, for non contact measurement, and three heads for
contact measurement. Powered by 9V battery (supplied) and has
jack socket for 6V DC supply.
fig. 1
1.2 LASER SAFETY
The TA050 utilises a Class II laser that emits low levels of
visible radiation (i.e. wavelengths between 400 and 700
nanometres) which are safe for the skin but not inherently safe
for the eyes. The Class II emission limit is set at the maximum
level for which eye protection is normally afforded by natural
aversion responses to bright light. Accidental eye exposure is
therefore normally safe, although the natural aversion response
can be overridden by deliberately staring into the beam, and can
also be influenced by the use of alcohol or drugs.
!WARNING! Do not look or stare into the laser beam
as permanent eye damage could result.
$$DO NOT direct the laser beam at any person’s (or
animal’s) eyes as eye damage could result.
#DO NOT operate the tachometer when you are tired or under
the influence of alcohol, drugs or intoxicating medication.
Be aware that reflections of the laser beam from mirrors or other
shiny surfaces can be as hazardous as direct eye exposure.
3.1 BATTERY
The battery cover is on the back of the unit. Remove the
screw at the base of the battery cover and lift off the cover.
Connect the supplied PP9 battery and place it into the
compartment. Replace the cover and secure it with the screw.
3.2 MEASUREMENT SELECTION
There are two measurement groups to choose from as
shown below:
3.2.1 GROUP ONE
RPM Non-contact revolutions per minute
rpm Contact revolutions per minute
HZ Contact frequency
M/M Contact meters per minute
I/M Contact inches per minute
F/M Contact feet per minute
Y/M Contact yards per minute
3.2.2 GROUP TWO
REV Revolutions
M Length in meters
In Length in inches
FT Length in feet
Yd Length in yards
3.2.3 Press the MEAS button once to turn the unit on. To switch
from one measurement group to the other hold down the
3. OPERATION

Declaration of Conformity We, the sole importer into the UK, declare
that the product listed here is in conformity with the following standards and directives.
The construction file for this product is held by the Manufacturer and
may be inspected, by a national authority, upon request to Jack Sealey Ltd.
For Jack Sealey Ltd. Sole importer into the UK of Sealey Professional Tools.
24th August 2004
DIGITAL TACHOMETER
Model: TA050
EN 60825-1 Laser safety
2002/95/EC RoHS Directive
2002/96/EC WEEE Directive
93/68/EEC CE Marking Directive
Signed by
Tim Thompson
4. DECLARATION OF CONFORMITY
TA050 - 2 - 051107
MODE button for three seconds. The display will alternate
between RPM (Group one) and REV (Group two). Release
the button when the display shows the group you require.
Press the MODE button repeatedly to cycle through the
options in each group (as shown overleaf) until you reach the
required measurement.
3.3 NON-CONTACT MEASUREMENT
3.3.1 In order to do a non-contact measurement the rotating object
must have a segment of reflective, self adhesive tape
attached to it. The tape should be attached as close to the
outer edge of the object as possible. Cut a 1/2” square from
the tape provided and apply to the object.
3.3.2 To obtain an accurate reading the non-reflective area must
always be greater than the reflective area.
3.3.3 If the whole object, such as a shaft, is normally reflective it
must be covered in black tape or painted black before the
reflective tape is applied.
3.3.4 When measuring very low rpm it may be necessary to apply
several reflective marks equally around the circumference of
the object. When a reading is taken it should then be divided
by the number of reflective marks in order to get a true reading.
3.3.5 TO TAKE A READING. Hold the unit about 6” (15cm) from the
rotating object. Press and hold the MEAS button and direct the
red spot of the laser beam onto the rotating object in the area
where the self adhesive tape was applied. After about 4
seconds the scanning symbol will be shown at the top of the
display (See fig.4) and a reading will appear in accordance with
the units of measurement previously selected. To store the
value(s) press the MEM button once whilst the MEAS button is
still held down. For more information refer to 3.5 DATA STORAGE
and 3.6 DATA RECALL.
3.4 CONTACT MEASUREMENT
3.4.1 Screw the contact adaptor into the front aperture of the
tachometer as shown in fig.3-A.
3.4.2 Choose one of the contact drivers shown in fig.3-B and push
it onto the adaptor shaft ensuring that the slots in the driver
pass over the drive pin in the end of the adaptor shaft.
fig. 4
fig. 6
fig. 7 fig. 8
fig. 3
fig. 5
the moving object. After about 4 seconds the scanning symbol
will be shown at the top of the display (See fig.4) and a reading
will appear in accordance with the units of measurement
previously selected. To store the value(s) press the MEM button
once whilst the MEAS button is still held down.
3.5 DATA STORAGE
3.5.1 To store the value(s) shown on display press the MEM button once
whilst the MEAS button is still held down.
3.5.2 The reading will be stored in one of ten data set locations.
One data set consists of a MAX data figure, a MIN data
figure, and an AVERAGE data figure. Only measurements
that can vary (such as RPM) will record as a set. Non variable
measurements such as REV will only record as a single
figure. See fig.5.
3.5.3 Once data set ‘0’ has been used the system will automatically
advance to the next available memory location. When all ten
locations are full (0 to 9), new sets of data will begin to
overwrite the original readings.
3.6 DATA RECALL
3.6.1 Press the MEAS button once to turn the unit on. Press the
MEM button once to display the current memory location in the
bottom right hand corner of the display.
3.6.2 If no data has been recorded for this location, another press
of the button will advance the display to the next memory
location.
3.6.3 When a memory location that contains data is selected the
reading will show in the centre of the display and the
appropriate unit of measurement will be shown at the top of
the display.
3.6.4 If maximum, minimum and average figures have been
recorded for a variable unit of measurement such as RPM,
the first measurement will be displayed with the word MAX
appearing at the bottom of the display. Press the MEM button
again to see the MIN measurement and press the button
again to see the AVG measurement. See figs. 6, 7 & 8. The
next press of the MEM button will advance the display to the
next memory location.
3.6.5 If no buttons are pressed for 15 seconds the unit will
automatically switch off.
fig. 2
3.4.3 Before using the tachometer in a contact situation do a risk
assessment in the area you will be working in to ensure that
you will not inadvertently come into contact with any other
moving parts whilst taking the reading you require.
3.4.4 TO TAKE A READING, press and hold down the MEAS button
and bring the rubber part of the driver gently into contact with
01284 757500
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Sealey Group,
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NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: No liability is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
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