Multi–functional digital tachometer

Pinpoint accuracy combined with measurement versatility

Multi–functional digital tachometer TKRT 20
Multi–functional digital tachometer TKRT 20
The Multi–functional digital tachometer TKRT 20 is a user–friendly and accurate digital tachometer utilising laser or contact for measuring rotational and linear speed. Equipped with a laser and contact adaptor, it offers excellent speed measurement versatility in five different modes. Additionally, the large angular range of ± 80° to target facilitates the easy measurement in areas where straight–line access is difficult. The laser optical system allows easy and quick speed measurement at a safe distance from rotating machinery.
  • With this digital tachometer the user can select to measure:
    - rpm, rps, m, ft or yards per minute or second,
    - length or revolution counting, or
    - time interval
  • Wide speed range and the various measurement modes make the TKRT 20 suitable for measuring speed in many applications
  • Large angular range of ± 80° to target facilitates easy measuring in areas where straight–line access is difficult
  • The large inverting LCD display facilitates easy reading even when pointing the unit down into the machinery
  • Compact design; one–hand operated instrument
  • Supplied in carrying case for protection and portability 
  • The digital tachometer TKRT 20 can also be equipped with remote laser sensor, which is optionally available

SKF TKRT 20 (fig 1)
Supplied in carrying case for protection and portability.
Technical data
Inverting vertical 5 digit LCD
Displayed resolution
Fully auto ranging up to 0,001 digit or ±1 digit fixed
Last reading held for 1 minute
Low battery indicator
Auto switch off
After 1 minute

- Optical modes
r/min and rps (also Count and Time interval)
- Contact modes
r/min and rps, metres, yards, feet, per min and per sec
- Count modes
total revs, metres, feet, yards
- Time intervalin seconds between pulses (reciprocal rate)
- Speed capture
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
3 to 99 999 r/min
- Accuracy±0.01% of reading ±1 digit
- Measuring distance50 mm to 2 000 mm (1.9 - 78.7 in.)
- Angle of operation±80˚
- Laser sensor1x built-in class 2 laser
- Remote laser sensorOptional TMRT 1-56
Contact Measurement
- Rotational speed
Max. 50 000 rpm for 10 sec
- Accuracy±1% of reading ±1 digit
- Contact adaptorsIncluded with rpm cone & removable metric wheel assembly
Battery4 x AAA alkaline type IEC LR03
Operation time24 hours continuous use
Additional power sourceN/A
Product dimensions213 x 40 x 39 mm (8.3 x 1.5 x 1.5 in.)
Product weight170 g (0.37 lbs)
Operating temperature0 to 40 °C (32 to 104 °F)
Storage temperature–10 to +50 °C (14 to 122 °F)
Relative humidity10 to 90% RH non-condensing
IP ratingIP 40
Case dimensions   260 x 85 x 180 mm (10.3 x 3.4 x 7.0 in.)
Case contents1x SKF Tachometer TKRT 20
1x set of contact adaptors TMRT 1-57
4x AAA batteries
1x set of reflective tape
1x printed instructions for use
1x calibration certificate
SKF logo