SKF TKTL 31 User manual

Instructions for use
SKF TKTL 31

2 EN
Safety recommendations...........................................................3
EC Declaration of conformity .....................................................4
1. Introduction........................................................................5
2. Quick start..........................................................................5
3. Features .............................................................................5
4. Technical data.....................................................................6
5. Front panel and button description .....................................8
6. Display overview ...............................................................10
7. Menu overview .................................................................11
8. Measurement settings ......................................................12
9. Maintenance .....................................................................13
9.1 Storage & cleaning.................................................................13
9.2 LCD error messages...............................................................13
9.3 Batteries ..................................................................................13
10. Notes ...............................................................................14
11. Emissivity table.................................................................15
12. Spare parts ......................................................................15
Table of contents
Original instructions
EN

3EN
WARNING LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
Max. Output: <1mW Wavelenght: 635-660nm
Complies with 21 CFR Chapter 1, subchapter J
AVOID EXPOSURE LASER RADIATION
IS EMITTED FROM THIS APERTURE
CAUTION
Safety recommendations
• Always read and follow the operating instructions for use.
• Never stare directly into the laser source. Class II laser product.
• Never aim the laser beams into anyone’s eyes.
• Never open the instrument.
• Never use the instrument under rain or very wet conditions
• Not for intrinsically safe area
• All repair work should be taken care of by an SKF repair shop.
• Here is a table of hazardous substance name and concentration
for TKTL 31:
Part
name
Hazardous Substances
Lead Mercury Cadmium Hexavalent
Chromium
Polybrominated
biphenyls
Polybrominated
diphenyl
ethers
(Pb) (Hg) (Cd) (Cr(VI)) (PBB) (PBDE)
Laser
module × • • • • •
The table is prepared in accordance with the provisions of SJ/T11364.
•: Indicates that said hazardous substance contained in all of the
homogeneous materials for this part is below the limit requirement
of GB/T 26572.
×: Indicates that said hazardous substance contained in at least of
the homogeneous materials used for this part is above the limit
requirement of GB/T 26572.
EN

4 EN
EC Declaration of conformity
We, SKF Maintenance Products, Meidoornkade 14, 3992 AE Houten,
The Netherlands herewith declare under our sole responsibility
that the products described in these instructions for use, are in
accordance with the conditions of the following Directive(s):
EMC DIRECTIVE 2014/30/EU
and are in conformity with the following standards:
CE-EMC:
EN 61326-1:2013, EN 61326-2-2:2013
Emission: CISPR 11:2009+A1: 2010, Class B
Immunity: IEC 61000-4-2:2008
IEC 61000-4-3:2010
IEC 61000-4-8:2009
RED-EMC:
RADIO EQUIPMENT DIRECTIVE 2014/53/EU
EN 301489-1 V2.1.1 :2017-02, EN 301489-17 V3.1.1 :2017-02
RED-RF:
EN 300328 V2.1.1 :2016-11
RED-EMF:
EN 62479 :2010, EN 62311 :2008
RED-LVD:
EUROPEAN LOW VOLTAGE DIRECTIVE 2014/35/EU
EN 60950-1 :2006/A11 :2009/A1 :2010/A12 :2011/A2 :2013
Laser standards: 21 CFR, ch 1-J
WEEE: European Directive 2012/19/EU
RoHS: RoHS DIRECTIVE (EU) 2015/863
CE requirements: CE certified
Houten, The Netherlands, March 2020
Mrs. Andrea Gondová
Manager Quality and Compliance

5EN
1. Introduction
The SKF TKTL 31 is a portable, lightweight multi- functional
instrument for safely measuring temperatures at a distance.
Simply aim and pull the trigger and the temperature is shown on
the display. Users can also measure contact temperatures using the
probe supplied.
This feature rich instrument also has the facility to store measured
values such as Maximum, Minimum, Difference, Average, High Alarm,
Low Alarm, Emissivity setting.
2. Quick start
1. Simply aim the thermometer at the measure target with Lens (8)
and press Meas. key (6) to display the surface temperature.
2. The Distance:Spot is 75:1.
The two laser points are the reference for the target spot size.
Please make sure the target area is within the field of view.
3. Features
• LCD black and white display, backlit
• Dual laser targeting
• Type-K thermocouple probe
• Adjustable emissivity
• High accuracy
• Fast response time
• DS ratio of 75:1
As the distance (D) from the object increases, the spot size (S) of the
area measured by TKTL 31 becomes larger.
The relationship between distance and each unit is listed below.
The spot size indicates 90% measured energy.
D:S = 75:1
Distance (D) to Spot (S) ratio
2cm@1,5m 6cm@4,5m
D
S
0.8in@60in 2.4in@180in

6 EN
4. Technical data
Designation TKTL 31
Temperature range
Infrared measurement -60 to 1 600 °C (-76 to 2 912 °F)
Using a probe -64 to 1 400 °C (-83.2 to 2 552 °F)
Probe supplied TMDT 2-30, suitable for use up to
900 °C (1 650 °F)
Probe types suitable K type probes
Full range accuracy
Tamb = 25°C Tobj = 15 to 35 °C, +/- 1.0 °C (1.8 °F)
Tamb = 23 +/- 3°C Tobj = 0 to 1 600 °C, +/-2% of reading
or 2 °C (4 °F) whichever is greater
Tamb = 23 +/- 3°C Tobj = -60 to 0 °C, +/- (2 + 0.05/°) °C
Tamb = 23 +/- 6°C With probe: , +/- 1% of reading or
1 °C (1.8 °F) whichever is greater
Response time 1 sec
Optics Sense emitted, reflected and transmitted
energy.
Distance to spot size 75:1
Spectral response 8-14 µm
Emissivity variable 0.1-1.0
Laser Class 2
Maximum laser power 1 mW
Laser pointers 2 laser dots
Laser wavelength 635 - 660 nm
Display
Display LCD black and white display, backlit
Displayed resolution 0.1 °C/F from -83.2~999.9,
otherwise 1° C/F
Controls
Buttons 4 buttons and 1 trigger.
Function as per instructions for use
User selectable backlit display yes, On/off
User selectable laser pointers
(2x)
yes, On/off
Measurement modes Max, min, average, differential,
probe/IR dual temperature
Alarm modes High and low level alarm level with
warning bleep
Dimensions
Unit 203 × 197 × 47 mm
(8.0 ×7.7 ×1.8 in)
TL1 Carrying case dimensions 530 × 85 × 180 mm (20.9 ×3.4 ×7.0 in)
Weight (including case) 1 300 g (2.87 lb)

7EN
Designation TKTL 31
Batteries
Type 2 × AAA Alkaline type IEC LR03
Operating time Typ.180, min. 140 hours continuous use
without Laser and Backlight
Auto switch off Automatic after 60 seconds after trigger
is released
Probe mode Automatic after 12 minutes
Environment
Operating temperature 0 to 50 °C (32 to 122 °F)
10 to 95% R.H.
Storage temperature -10 to 60 °C (14 to 140 °F)
10 to 95% R.H.

8 EN
5. Front panel and button description
1
2
4
5
3
9
8
10
Item Description
1 Emmissivity key
2 Down key
3LCD
4 Up key
5 Mode key
8 Infrared lens
9 Laser
10 LED

9EN
11
6
7
Item Description
6 Meas. key
7 Battery cover
11 Thermocouple socket

10 EN
6. Display overview
Default screen

11EN
7. Menu overview
• Press Emissivity key (1)
for setting the emissivity
• Press Emissivity key (1),
then press Up key (4) or
Down key (2) to set the
emissivity, then press
Mode key (5) to confirm it.
The emissivity can be
changed from 0.10 (10E)
to 1 (100E).
• Press Mode key (5) for
scrolling more display
function as follows.
Here will show the emissivity
data. (The default emissivity
is 0.95.)
• Press Mode key (5) for the Maximum (MAX), Minimum (MIN),
Difference between MAX and MIN (DIF) and Average (AVG)
modes. During the measurement, the special modes reading will
be displayed beside the mode icon.
• Press Up key (4) or Down key (2) to change the High Alarm (HAL)
or Lo Alarm (LAL), then press Meas. key (6) to confirm it. When
the reading is outside the High Alarm (HAL) or Lo Alarm (LAL)
limit. The High or Low icon will flash and you will hear a beep
sound.
• Connect the thermocouple with Thermocouple socket (11) and
put the probe in/on the target, the thermometer will display the
temperature automatically without pressing any button. To see
the minimum or maximum data during the probe measurement,
please hold down the Up key (4) or Down key (2).
BEWARE:
• Affter measuring high temp, the probe may remain HOT for
a while.
** The thermometer will automatically shut off if left idle for more
than 60 sec, unless in PRB mode. (In PRB mode, it will shut off if
left idle for more than 12 minutes.)

12 EN
8. Measurement settings
• In MAX, MIN, DIF, AVG mode:
Press Up key (4) for LOCK mode ON/OFF.
The lock mode is particularly useful for continuous monitoring of
temperatures for up to 60 minutes.
• Press Down key (3) for ºC or ºF transferred.
• In all modes: First hold on the Meas. key (6)
and press Up key (4) for backlight function ON/OFF,
and press Down key (2) for laser function ON/OFF.
(With flash light to be turned on in the same time as laser)

13EN
9. Maintenance
9.1 Storage & cleaning
It should be stored at room temperature. The sensor lens is the most
delicate part of the thermometer. The lens should be kept clean at all
times, care should be taken when cleaning the lens using only a soft
cloth or cotton swab with water or medical alcohol, allowing the lens
to fully dry before using the thermometer. Do not submerge any part
of the thermometer.
9.2 LCD error messages
The thermometer incorporates visual diagnostic messages as follows:
‘Hi’ or ’Low’ is displayed when the temperature being measured is
outside of the settings of HAL and LAL.
‘Er2’ is displayed when the thermometer is exposed to rapid changes
in the ambient temperature.
‘Er3’ is displayed when the ambient temperature exceeds
0 ºC (32 °F) or +50 ºC (122 °F). The thermometer should be
allowed plenty of time (minimum 30 minutes) to stabilize to the
working/room temperature.
Error 5~9, for all other error messages it is necessary to reset the
thermometer. To reset it, turn the instrument off, remove the battery
and wait for a minimum of one minute, reinsert the battery and turn
on. If the error message remains, please contact SKF for further
assistance.
‘Hi’ or ’Lo’ is displayed when the temperature being measured is
outside of the measurement range.
9.3 Batteries
The thermometer incorporates visual low battery indication as
follows:
• ‘Battery OK’: measurements are possible.
• ‘Battery Low’: battery needs to be replaced,
measurements are still possible.
• ‘Battery Exhausted’: measurements are not possible.
When the ‘Low Battery’ icon indicates the battery is low, the battery
should be replaced immediately with AAA, 1.5V batteries.
Please note: It is important to turn the instrument off before
replacing the battery otherwise the thermometer may malfunction.
Dispose of used battery promptly and keep away from children.
If the device is not to be used for a long time, turn the power off,
remove and store the batteries in a cool, dry place.
NOTE:
• Under an electromagnetic field of 3V/m from 1 to 6GHz the
maximum error is +17.4 °C.

14 EN
10. Notes
How does Infrared work?
Infrared thermometers measure the surface temperature of an
object. The unit’s optics sense emitted, reflected, and transmitted
energy, which is collected and focused onto a detector.
The unit’s electronics translate the information into a temperature
reading, which is displayed on the unit.
The laser is used for aiming purpose only.
• Field of View
Make sure the target is larger than the unit’s spot size.
The smaller the target, the closer you should be.
When accuracy is critical, make sure the target is at least twice as
large as the spot size.
• Distance & Spot Size
As the distance (D) from the object increases, the spot size (S) of the
area measured by the unit becomes larger.
See figure at the beginning of this manual.
• Locating a hot Spot
To find a hot spot aim the thermometer outside the area of interest,
then scan across with an up and down motion until you locate hot
spot.
• Reminders
- Do not use the unit to measure shiny or polished metal
surfaces (stainless steel, aluminum, etc.). See Emissivity.
- The unit can not measure through transparent surfaces such
as glass. It will measure the surface temperature of the glass
instead.
- Steam, dust, smoke, etc., can prevent accurate measurement
by obstructing the unit’s optics.
• Emissivity
Emissivity is a term used to describe the energy-emitting
characteristics of materials.
Most (90% of typical applications) organic materials and painted or
oxidized surfaces have an emissivity of 0.95 (pre-set in the unit).
Inaccurate readings will result from measuring shiny or polished
metal surfaces. To compensate, cover the surface to be measured
with masking tape or black paint. Allow time for the tape to reach the
same temperature as the material underneath it.
Measure the temperature of the tape or painted surface.

15EN
11. Emissivity table
Substance Thermal
emissivity
Substance Thermal
emissivity
Asphalt 0,90 to 0,98 Cloth (black) 0,98
Concrete 0,94 Human skin 0,98
Cement 0,96 Leather 0,75 to 0,80
Sand 0,90 Charcoal
(powder)
0,96
Earth 0,92 to 0,96 Lacquer 0,80 to 0,95
Water 0,92 to 0,96 Lacquer (matt) 0,97
Ice 0,96 to 0,98 Rubber (black) 0,94
Snow 0,83 Plastic 0,85 to 0,95
Glass 0,90 to 0,95 Timber 0,90
Ceramic 0,90 to 0,94 Paper 0,70 to 0,94
Marble 0,94 Chromium
oxides 0,81
Plaster 0,80 to 0,90 Copper oxides 0,78
Mortar 0,89 to 0,91 Iron oxides 0,78 to 0,82
Brick 0,93 to 0,96 Textiles 0,90
12. Spare parts
Designation Description
TMDT 2-30 Contact probe
TDTC 1/X General toolcase without inlay, size X

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MP5495 · 2020/06
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