Tachometers

A tachometer, or revolution counter, measures the rotation speed of an object within a machine. The value is typically displayed in revolutions per minute (RPM) via analogue dial or digital display. Tachometers are used to measure speed of rotation and some can measure linear speed and distance too.

How does it measure?
Contact tachometers take measurement using physical contact, for example a funnel, wheel or tip. These instruments gather the data for the tachometer. Non-contact tachometers often use a laser or optical disc to measure and are ideal for mobile applications.

Tachometers are used in:
Machinery
Automotive
Trains
Laser instruments
Laboratories
Marine engineering
Medicine (blood flow)

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Description Price Best Accuracy Calibrated Category Battery Life Battery Type Display Type Dimensions Weight Height Length Maximum Operating Temperature Maximum Speed Minimum Operating Temperature Minimum Speed
RS Stock No. 668-0854
Mfr. Part No.TACH20
BrandAmprobe
£335.00
Each
Units
±0.02% + 1 Digit - Contact, Non Contact - AA LCD 60 x 28 x 175mm 250g 175mm 60mm +50°C 9999 rpm, 99999 rpm 0°C 1rpm
RS Stock No. 205-520
Mfr. Part No.CT6
BrandCompact
£272.62
Each
Units
±0.05 % - Optical - AAA LED - - - - - 99999rpm - 3rpm
RS Stock No. 205-665
Mfr. Part No.CT6
BrandCompact
£328.62
Each
Units
±0.05 % RSCAL Optical - AAA LED - - - - - 99999rpm - 3rpm
RS Stock No. 330-3582
Mfr. Part No.A2103/LSR
BrandCompact
£270.73
Each
Units
±0.05 % - Laser - AAA LCD - - - - - 99999rpm - 3rpm
RS Stock No. 468-6030
Mfr. Part No.A2108
BrandCompact
£263.04
Each
Units
±0.5 % - Contact, Optical - AAA LED - - - - - 60000rpm - 100rpm
RS Stock No. 468-6175
Mfr. Part No.A2108
BrandCompact
£319.04
Each
Units
±0.5 % RSCAL Contact, Optical - AAA LED - - - - - 60000rpm - 100rpm
RS Stock No. 124-8481
Mfr. Part No.TKRT20
BrandSKF
£388.59
Each
Units
±0.01 (Optical Measurement) %, ±1 (Contact Measurement) % - Contact, Optical 24 h AAA LCD 40 x 39 x 213mm 170g 213mm 40mm +40°C 50000 (Contact Measurement) rpm, 99999 (Optical Measurement) rpm 0°C 3 (Optical Measurement)rpm
RS Stock No. 468-6024
Mfr. Part No.A2108/LSR/232
BrandCompact
£301.72
Each
Units
±0.1 % - Laser - AAA LED - - - - - 60000rpm - 100rpm
RS Stock No. 468-6169
Mfr. Part No.A2108/LSR/232
BrandCompact
£357.72
Each
Units
±0.1 % RSCAL Laser - AAA LED - - - - - 60000rpm - 100rpm
RS Stock No. 327-6272
Mfr. Part No.0563 0465
BrandTesto
£164.29
Each
Units
- - Optical 40 h AA LCD 5.7 x 2.3 x 8in - 8in 5.7in +122°F 99999rpm +32°F 1rpm
RS Stock No. 705-9579
Mfr. Part No.P01174830
£414.97
Each
Units
±6 Counts - Contact, Non Contact 260 5-Minute Tests (Optical Sensor), 600 5-Minute Tests (External Sensor) - LCD 72 x 47 x 216mm 250g 216mm 72mm +55°C 100000rpm 0°C 6rpm
RS Stock No. 705-9576
Mfr. Part No.P01174810
£305.20
Each
Units
±6 Counts - Non Contact 260 5-Minute Tests (Optical Sensor), 600 5-Minute Tests (External Sensor) - LCD 72 x 47 x 216mm 250g 216mm 72mm +55°C 100000rpm 0°C 6rpm
RS Stock No. 330-3576
Mfr. Part No.A2103
BrandCompact
£261.88
Each
Units
±0.05 % - Optical - AAA LCD - - - - - 99999rpm - 3rpm
RS Stock No. 419-5916
Mfr. Part No.A2103
BrandCompact
£317.88
Each
Units
±0.05 % RSCAL Optical - AAA LCD - - - - - 99999rpm - 3rpm
RS Stock No. 933-017
BrandTektronix
£52.50
Each
Units
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Related Products
An electronic 5-digit LCD contact tachometer which also ...
Description:
An electronic 5-digit LCD contact tachometer which also functions as a speed indicator (selectable). Direct reading rpm Surface speed ft/min. or m/min Memory - recall of last reading, max., min Requires 4 x AA alkaline cells (RS Stock No. 591-225). Single-memory Version.
The TKRT 20 tachometer from SKF is user-friendly ...
Description:
The TKRT 20 tachometer from SKF is user-friendly and provides accurate measurement of rotational and linear speeds. Its versatility is due to its range of contact adapters and laser, and works in five different modes. The tachometer has a large inverting LCD display which allows for easy reading even when ...
The Testo 465 series optical tachometer has a ...
Description:
The Testo 465 series optical tachometer has a maximum speed of 99999rpm and can measure rpm easily without contact using only one hand. The measuring instrument is thus suitable for measurements on rotating parts such as ventilators and shafts. Simply attach a reflective marker (optional) to the measurement object, point ...
Tachometer for use in difficult access environments or ...
Description:
Tachometer for use in difficult access environments or where small instrument size is important. Class 2 laser (670nm) for improved target performance Operating range, up to 2metres Improved optical angle to reflective target ±80°Display reads vertical and inverted (switchable)Autoranging OR range selectable Measure rpm and Linear distance Metric OR imperial ...