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Order model: TKRT 31

Maker: SKF


Laser and contact tachometer with wide measurement capability

The TKRT 31 is an advanced, multi-functional digital tachometer. The large colour screen provides easy reading. Via the easy-button-control the user can quickly scroll through the menu and start operating.  The TKRT  uses laser or contact measurement to determine rotational speed, linear speed and distances. The device enables easy, quick measurement at a safe distance from rotational machinery. It has a wide speed range and a number of measurement modes. The TKRT 31 is supplied with a full set of contact adaptors.

  • User can measure a variety of functions, including rpm, Hz, m, feet/inches per minute or second, and length – all on a time interval
  • Compact device has large colour-backlit TFT display for maximum reading clarity. A full set of contact adaptors is included
  • Convenient to use: operated using one hand and works with either rechargeable or standard batteries.
  • Aimed at users in maintenance jobs, the device brings preventive maintenance to inspection of rotating equipment or machines
  • Large angular range enables easy measurement in areas where straight-line access is difficult
  • Laser sensor allows fast and easy measurement at a safe distance from rotating machinery. It has several measurement modes and a wide speed range, making it suitable for many applications
DesignationTKRT 31
GeneralMemoryYes, 5 slots
Low battery indicatorYes
Auto switch offYes
DisplayMulti-line backlight TFT
Display updateContinuous
ControlsDirect selector switches
Housing materialABS (plastics)
MeasurementOptical modesrpm and Hz
Contact modesrpm and Hz, meters, feet, inch, per min and per sec
Count modesDistance mode
Speed capture featureMaximum, Minimum or Average rate
Linear speedmeters, feet, inch, per min and per sec
Optical measurementRotational speed range1 to 99 999 r/min
Accuracy±0.01% of reading ±1 digit
Measuring distance25 to 1 200 mm (1 to 47 in)
Angle of operation±30°
Laser sensorBuilt-in class 2 laser
Contact measurementRotational speed rangeMax. 20 000 rpm for 36 000 sec
Accuracy±0.1% of reading ±1 digit (>120 rpm or “high accuracy”)
“low speed accuracy” at < 120 rpm
Contact adaptorsIncluded with removable cones and wheels
Battery and powerPower source2 x AA batteries, rechargeable can be used
Run time ca.20% Display brightness, 50% Laser-On, 50% Bluetooth-On: 8:00 h
100% Display brightness, 50% Laser-On, 50% Bluetooth-On: 3:30 h
Size and weightProduct dimensions295 × 70 × 38 mm (11.6 × 2.8 × 1.5 in)
Case dimensions260 × 85 × 180 mm (10.2 × 3.3 × 7.1 in)
Unit weight270g (0.6 lb)
Total weight (incl. case)850g (1.9 lb)
Operating requirementsOperating temperature0 to 40 °C (32 to 104 °F)
Storage temperature–20 to 45 °C (–4 to 113 °F)
Type of protection for indication onlyIP 40
Case contents1 × Tachometer TKRT 31
1 × Extension shaft
2 × Conical tips
2 × Wheels
2 × AA batteries
1 × Set of reflective tape
1 × Instructions for use

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