10 EN
2. Technical data
Designation
TKRT 21
General
Low battery indicator
Yes
Auto switch off
Yes
Measurement
Optical modes
rpm and Hz
Contact modes
rpm and Hz, meters, feet, inch, per min and per sec
Speed capture feature
Maximum, minimum or average rate
Linear Speed
Meters, feet, inch, per min and per sec
Optical Measurement
Rotational speed range
1 to 99999 r/min
Accuracy
±0.01% of reading ±1 digit
Measuring distance
25 mm to 1200 mm
(1 in - 47 in)
Angle of operation
±30°
Laser sensor
built-in class 2 laser
Contact Measurement
Rotational speed range
Max. 20000 rpm for 36000 sec
Accuracy
±0.1% of reading ±1 digit
(>120 rpm)
Contact adaptors
Included with removable cones & wheel 6”
Power source
2 x AA batteries, rechargeable ones can be used
Run time ca.
12 h
Display
LCD
Display update
Continuous
Controls
Direct selector switches
Housing material
ABS (plastics)
Product dimensions
295 × 70 × 38 mm
(11.6 × 2.8 × 1.5 in)
Case dimensions
260 × 85 × 180 mm
(10.2 × 3.3 × 7.1 in)
Unit weight
270 g
(0.6 lb)
Total weight (incl. case)
850 g
(1.9 lb)
Operating temperature
0 to 40 °C
(32 to 104 °F
)
Storage temperature
–20 to +45 °C
(–4 to +113 °F)
Type of protection for
indication only
IP 40