SKF TKRT 20 User manual

Instructions for use
Mode d’emploi
Bedienungsanleitung
Instrucciones de uso
Manuale d’istruzioni
Instruções de uso
使用说明书
Инструкция по эксплуатации
SKF TKRT 20

English 2
Français 13
Deutsch 24
Español 35
Italiano 46
Português 57
中文 68
Русский 79

2SKF TKRT 20
Table of contents
EC Declaration of conformity ................................................................. 3
Safety recommendations ....................................................................... 4
1. Technical data ................................................................................ 5
2. Features and operation ................................................................... 6
3. Default setting - rpm mode, non autoranging ................................. 8
3.1 Programming - measurement mode selection ...................................8
3.2 Optical revolutions speed measurement - rpm or rps .......................8
3.3 Contact revolution speed measurement - rpm or rps .......................9
3.4 Linear contact speeds measurement - metres, yds, feet etc. ...........9
3.5 Autorange selection - speed modes only .............................................9
3.6 Average speed monitoring mode - av. .................................................9
3.7 Operation of Maximum & Minimum modes
Speed Capture functions - mx, mn. .................................................. 10
3.8 Count measurement mode - cnt ........................................................ 10
3.9 Total Linear Length measurements - mt, ft, yd ............................. 10
3.10 Time interval measurement - int ....................................................... 11
3.11 Display orientation - Inverting function - All modes ....................... 11
3.12 Remote Input ......................................................................................... 11
3.13 Battery replacement ............................................................................. 11
4. Maintenance ................................................................................. 12
5. Spare parts and accessories .......................................................... 12
Original instructions

3
SKF TKRT 20
EC Declaration of conformity
We,
SKF Maintenance Products
Kelvinbaan 16
3439 MT Nieuwegein
The Netherlands
herewith declare that the following product:
SKF Tachometer
TKRT 20
is designed and manufactured in accordance with
EMC DIRECTIVE 2004/108/EC as outlined in the harmonized norm for
Emission EN 61000-6-3:2007
Immunity EN 61000-6-1:2007
The laser is classified in accordance with the
EN 60825-1:2005
EUROPEAN ROHS DIRECTIVE 2011/65/EU
Nieuwegein, The Netherlands,
September 2013
Sébastien David
Manager Product Development and Quality

4SKF TKRT 20
Safety recommendations
• Always read and follow the operating instructions for use.
• Never stare directly into the laser source.
• Never aim the laser beam into anyone eyes.
• Never open the instrument and attempt to adjust the output of
the laser.
• All repair work should be taken care of by an SKF repair shop.
WARNING
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
P ≤ 1mW l = 635nm

5
SKF TKRT 20
1. General features
The SKF laser tachometer set TKRT 20 features a large vertical LCD display
that gives excellent visibility in most applications.
It has an “Inverting display feature” which maintains the display in the correct
plane for the user, for example when pointing the unit down into machinery.
This inverting display feature offers greater operational flexibility in almost
any application where access is difficult. Laser optics provide enhanced
optical performance compared to standard non-contact tachometers.
It is supplied with a contact adaptor for rpm and linear speed contact
applications. Other features include Maximum and Minimum speed Capture
and Average speed modes.
Battery low
Auto range
On target
Program
ON up
ON down

6SKF TKRT 20
2. Technical data
General
Display Inverting LCD Vertical 5 digit display
Displayed resolution Fully Auto ranging up to 0,001 digit or ±1 digit fixed
Memory Last reading held for 1 minute
Low battery indicator Yes
Auto Switch Off
After 1 minute
Measurement
Optical modes rpm and rps (also Count and Time interval)
Contact modes rpm and rps, metres, yards, feet, per min and
per sec
Count modes total revs, metres, feet, yards
Time interval in seconds between pulses (reciprocal rate)
Speed capture feature Maximum, Minimum or Average rate
Sampling time 0,8 seconds or time between pulses
0,1 seconds auto-selection in Max or Min
capture mode
Linear Speed 0,3 to 1 500 metres/min (4 500 ft/min) or
equivalent in seconds
Optical Measurement
Rotational speed range 3 to 99 999 r/min
Accuracy ±0,01% of reading ±1 digit
Measuring distance 50 mm to 2 000 mm (1.9 in.- 78.7 in.)
Angle of operation ±80°
Laser sensor 1 ™ built-in class 2 laser
Remote laser sensor Optional TMRT 1-56
Contact Measurement
Rotational speed range Max. 50 000 rpm for 10 sec
Accuracy ±1% of reading ±1 digit
Contact adaptors Included with rpm cone & removable metric
wheel assembly

7
SKF TKRT 20
Battery and Power
Battery 4 ™ AAA alkaline type IEC LR03
Operation time 24 hours continuous use
Additional charging
capability N/A
Size and Weight
Product Dimensions 213 ™ 40 ™ 39 mm (8.3 ™ 1.5 ™ 1.5 in.)
Product Weight 170 g (0.37 lb)
Total weight
(incl. case)
765 g
(1.7 lb)
Operating Requirements
Operating temperature 0 to 40 °C (32 to 104°F)
Storage temperature –10 to +50 °C (14 to 122°F)
Relative Humidity 10 to 90% RH non-condensing
IP rating IP 40
Case contents
1 ™ SKF Tachometer TKRT 20
1 ™ set of contact adaptors TMRT 1-57
4 ™ AAA batteries
1 ™ set of reflective tape
1 ™ printed Instructions for Use
1 ™ Calibration certificate

8SKF TKRT 20
3. Default setting - rpm mode, non autoranging
3.1 Programming - measurement mode selection
All measurement modes are chosen by this method and once confirmed,
selected mode remains in permanent memory until re-programmed by the user.
• To change mode hold programme button on and press up measure
button and then release both buttons, the display will now illuminate all
icons, and the current range will flash.
• To select new measurement mode press either up or down button to
scan through the modes, when the required mode icons flash release
measure button & press programme button once to confirm settings.
For non-speed modes the unit is now programmed and ready for use.
• To select mx, mn, av. modes continue to scroll through each one, if
the mode is not required, stop scan when all three icons illuminate
continuously, then press programme button once.
The instrument is now ready to use.
Note:
Selected parameters will be retained until reprogrammed.
3.2 Optical revolutions speed measurement - rpm or rps
See section 3.1
• Attach small reflective target to machine shaft
(typically 6 mm x 25 mm).
• Start machine and point the tachometer towards the target.
• Press and hold either of the ON up/down buttons to suit application
and hold continuously.
• Aim light beam onto target, ensure “on-target” sign is lit or flashing
steadily.
• Read off rpm, releasing button will hold last reading.
• Last rpm reading will be held in display for 1 minute.
• Press the On button to zero reading or take another measurement.
• Releasing the ON switch will hold the reading automatically for
1 minute, automatic switch off.

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SKF TKRT 20
3.3 Contact revolution speed measurement - rpm or rps
See section 3.1
• Fit contact adapter into the tachometer and ensure a good click
fit connection.
• Start machine and make clean contact with the recess in shaft end
(wheel can be removed).
•
Contact the shaft end via the rubber cone, ensure a steady firm pressure is
applied and that the instrument is in line accurately with the machine shaft.
• Press and hold either up or down measure button as required & read speed.
• Releasing the ON switch will hold the reading automatically for
1 minute, automatic switch off.
3.4 Linear contact speeds measurement - metres, yds, feet etc.
See section 3.1
• Fit contact adaptor as above.
• Keeping the on button pressed, now place the contact wheel on the
moving surface and read the linear rate, ensure wheel is vertical to the
moving surface.
• Releasing the on button will then hold the last reading in the display
for 1 min.
• The instrument retains selected measurement mode for further linear
measurements after switch off until programmed to a different mode.
3.5 Autorange selection - speed modes only
• While taking a measurement using either up or down measure button,
the user can toggle between auto and non-auto mode by pressing the
programme button, in the auto mode, the A icon will illuminate.
3.6 Average speed monitoring mode - av.
See section 3.1
• Average speed mode - this mode provides a rolling average of the last
8 measured values.
• Press and hold the On/off button at the forward arrow position and hold
continuously
• Aim light beam onto target, ensure “on-target” sign is on at bottom of
display screen.
• Take rpm reading.

10 SKF TKRT 20
3.7 Operation of Maximum & Minimum modes
Speed Capture functions - mx, mn.
See section 3.1
• Having selected the required mode, i.e. Maximum or Minimum, (mx,mn).
• You are now ready to Capture a reading “On Demand” but continuing to
operate normally.
• When a capture test is ready to commence, while the Measure button is
held On, press Programme button once, at this point the instrument will
switch into high speed Timebase mode,
(0,1 Seconds) and will Capture the highest or lowest reading after
pressing the Programme button.
Releasing the On button will hold the reading and cancel the Capture
mode until another Capture measurement is required, when 3.7 should
be repeated.
3.8 Count measurement mode - cnt
See section 3.1
• Select the count mode (cnt).
• For counting revolution optically, point the light beam at the target and
the instrument will measure all revolutions (revs) until button is released,
the display will hold Count for 1 minute.
• By contact method, fit contact adaptor, press speed cone onto the end of
the shaft, the Instrument will count revolutionds.
3.9 Total Linear Length measurements - mt, ft, yd
See section 3.1
• Select any linear unit of measurement, press contact wheel onto moving
surface and commence Count by pressing & holding Measure button On,
Count will increment until button is released.
• The displayed value can be scanned through the equivalent values of
Metres, Feet, Yards, Count by pressing the Programming button, the
instrument automatically calculates the appropriate reading.
Note:
Measurement Units will be stored in originally programmed
parameter e.g. metres.

11
SKF TKRT 20
3.10 Time interval measurement - int
See section 3.1
• Select int mode.
• This mode allows measurement of Time between pulses from
optical system (or contactor).
• Optically the instrument will measure the time in seconds between
pulses, useful for cycle timing of reciprocating machinery.
• (Time in seconds per revolution), which equals reciprocal speed.
• Very slow speeds can be measured in this mode below 3 rpm.
3.11 Display orientation - Inverting function - All modes
• The instrument can be used through 180° rotation
(e.g. with the light beam pointing downward into a machine),
the display inverts so that normal reading can take place.
• The UP Button selects normal mode for optical and contact measurements.
• The Down button selects the display inversion mode and the whole
display including relevant icons will reverse through 180 degrees
allowing access to difficult applications.
3.12 Remote Input
• The TKRT 20 can be connected to a remote laser sensor, designation
TMRT 1-56. Plug the remote input into the jack socket located at the
rear end of the instrument. The TKRT 20 will now operate as normal but
the sensing will be via the remote laser.
• The remote sensor may be hand held or mounted on a bracket,
designation TMRT 1-60, enabling permanent mounting.
Note:
The internal optical system is automatically disabled in this mode.
3.13 Battery replacement
• Power requirements: 4 x AAA alkaline cells.

12 SKF TKRT 20
4. Maintenance
Important:
Repair or servicing should only be carried out by SKF.
1. The TKRT 20 is not intended to be exposed to dusty conditions.
2. If excessive wear/corrosion has taken place to the plating on
the housing and another colour begins to show through,
the unit must be returned to SKF for attention.
3. The TKRT 20 should not be subjected to mechanical or thermal stress,
nor should it be subjected to any aggressive substances.
Note:
This instrument has been designed such that it will not give rise to
injury or other harm due to contact, nor will it produce excessive heat,
infrared, electromagnetic or ionising radiation, nor does it have any
non-electrical dangers.
5. Spare parts and accessories
Designation Description
TMRT 1-56 Laser remote sensor
TMRT 1-57 Contact adapter
TMRT 1-57K Tyre and RPM cone set
TMRT 1-59 Reflective tape
TMRT 1-60 Bracket for laser remote sensor
TDTC 1/A General toolcase without inlay, size A

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SKF TKRT 20
Table des matières
Déclaration de conformité UE .............................................................. 14
Recommandations de sécurité ............................................................. 15
1. Caractéristiques générales ............................................................ 16
2. Caractéristiques techniques .......................................................... 17
3. Configuration par défaut: mode tr/min,
auto-réglage désactivé ................................................................. 19
3.1 Programmation - sélection du mode de mesure .............................. 19
3.2
Mesure optique des vitesses de rotation - en tr/min ou tr/s. ............19
3.3 Mesure par contact des vitesses de rotation - en tr/min
ou tr/s. .....................................................................................................20
3.4 Mesure par contact de vitesses linéaires - en mètres,
yds, pieds etc..........................................................................................20
3.5 Sélection de la fonction modes auto-réglage - vitesse
uniquement ............................................................................................ 20
3.6 Mode Contrôle de la vitesse moyenne - av. .......................................21
3.7 Utilisation des modes de capture des vitesses
Maximum et Minimum - mx, mn. .......................................................21
3.8 Mode Compteur - cnt ............................................................................21
3.9 Mesures de longueurs totales - mt, ft, yd .......................................... 21
3.10 Mesure d’intervalles de temps - int ..................................................... 22
3.11 Orientation de l’affichage - Fonction affichage
inversible - Ensemble des modes ........................................................ 22
3.12 Entrée pour capteur à distance ...........................................................22
3.13 Remplacement des piles ......................................................................22
4. Maintenance ................................................................................. 23
5. Pièces de rechange et accessoires ................................................. 23
Traduction extraite du mode d’emploi d’origine

14 SKF TKRT 20
Déclaration de conformité UE
Nous,
SKF Maintenance Products
Kelvinbaan 16
3439 MT Nieuwegein
Pays-Bas
déclarons que le produit suivant:
Tachymètre SKF
TKRT 20
a été conçu et fabriqué conformément à la
EMC DIRECTIVE 2004/108/EC, telle qu’elle est décrite dans la
norme harmonisée pour
EN 61000-6-3:2007 sur les émissions
EN 61000-6-1:2007 sur l’immunité.
Le laser est homologué CE et sa classification est conforme aux normes :
EN 60825-1:2005 (class II power < 1mw)
EUROPEAN ROHS DIRECTIVE 2011/65/EU
Nieuwegein, Pays-Bas,
Le 1 septembre 2013
Sébastien David
Responsable Développement de Produits et Responsable Qualité

15
SKF TKRT 20
Recommandations de sécurité
• Lisez attentivement ces consignes et veillez à toujours les respecter
lors de l’utilisation.
• Ne fixez jamais directement la source laser.
• Ne dirigez jamais le rayon laser vers les yeux d’une tierce personne.
• Ne tentez jamais d’ouvrir l’instrument ni de régler la puissance
du laser.
• Toute réparation doit être effectuée dans un atelier de réparation SKF.
W 
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
P ≤ 1mW l = 635nm

16 SKF TKRT 20
1. Caractéristiques générales
Le tachymètre laser et par contact SKF TKRT 20 est équipé d’un grand afficheur
vertical à cristaux liquides qui offre une lisibilité optimale dans la plupart des
applications. Il dispose d’une « fonction affichage inversé » qui consiste à afficher
le résultat dans un plan adapté à l’orientation de l’instrument, par exemple lorsque
celui-ci est incliné vers le bas à l’intérieur d’une machine.
Cette fonction d’affichage inversé confère à l’instrument une grande souplesse
d’utilisation dans la plupart des applications difficiles d’accès. Le système laser offre
des performances optiques supérieures aux tachymètres sans contact standard.
Le TKRT 20 est fourni avec un adaptateur destiné à la mesure par contact des
vitesses de rotation et vitesses linéaires. D’autres fonctions sont également
disponibles comme les modes de mesure de la vitesse maximum, minimum
et moyenne.
Battery low /
Piles déchargées
Auto range / Ajustement plage
automatique
On target / Témoin de visée
Program / Programme
ON up /
Marche mode normal
ON down /
Marche mode inversé

17
SKF TKRT 20
2. Caractéristiques techniques
Généralités
Écran Affichage vertical inversible 5 chiffres à cristaux
liquides
Plage de résolution Auto-réglage jusqu’à 0,001 chiffre ou ±1 chiffre
Mémoire Rappel de la dernière valeur pendant 1 minute
Témoin de piles
déchargées Oui
Arrêt automatique
Après 1 minute
Mesure
Modes optiques tr/min et tr/s (comptage et temps d’intervalle)
Modes de contact tr/min et tr/s, mètres, pieds, yards, par min et
par sec
Modes de comptage nombre total de tours, mètres, pieds, yards
Mesure de la durée en secondes de l’intervalle entre les impulsions
(mouvement alternatif)
Fonction capture de
vitesse vitesse maximum, minimum ou moyenne
Temps de balayage 0,8 secondes ou temps entre les impulsions
0,1 seconde en réglage automatique dans le
mode capture Max ou Min
Plage de vitesse linéaire 0,3 à 1 500 mètres/min ou l’équivalent en secondes
Mesure optique
Plage de vitesse de
rotation 3 à 99 999 tr/min
Précision ±0,01% de la valeur affichée ±1 chiffre
Distance de mesure 50 mm à 2 000 mm
Angle d’utilisation ±80º
Capteur laser 1 laser integré de classe 2
Capteur laser à distance En option réf. TMRT 1-56

18 SKF TKRT 20
Mesure avec adaptateur de contact
Plage de vitesse de
rotation Max. 50 000 tr/min pendant 10s
Précision ±1% de la valeur affichée ±1 chiffre
Adapteur de contact Ensemble complet avec pointe tr/min et roue
métrique démontable inclus.
Alimentation
Type de piles 4 piles alkalines type AAA IEC LR03
Temps de fonctionnement 24 heures d’utilisation en continue
Chargeur additionnel
Capacité de chargement N/A
Dimension et poids
Dimension de la mallette 213 ™ 40 ™ 39 mm
Poids total 170 g
Poids total
(mallette incl.) 765 g
Conditions de fonctionnement
Température de
fonctionnement 0 to 40°C
Température de stockage –10 to +50°C
Humidité relative HR de 10 à 90% sans condensation
Indice de protection (IP) IP 40
Mallette SKF
Contenu
de la mallette 1 ™ Tachymètre SKF TKRT 20 1 ™ ensemble d’adaptateurs de contact
TMRT 1-57
4 ™ piles AAA
1 ™ kit ruban réfléchissant
1 ™ manuel d’utilisation
1 ™ certificat de calibration