REED R7140 Combination Contact / Laser Photo Tachometer


Dual function tachometer features the ability to measure RPM with non-contact (visible light) and contact (ft/min / m/min) measurements quickly and accurately.

REED R7140 Offers

This tachometer features both the ability to measure RPM (revolutions per minute) in rotational equipment and surface speed m/min (meter per minute) / ft/min (feet per minute) with included contact adapters. The R7140 uses visible light for non-contact measurements to read up to 12" (300mm) from any target. The R7140 features a durable ABS plastic housing to assure years of maintenance free performance.


  • Dual function unit with both contact and non-contact capabilities
  • Provides fast and accurate RPM measurements of rotating objects and surface speed measurements m/min (meter per min) and ft/min (feet per min)
  • Internal memory holds last reading for 5 mins and recalls min/max and last value
  • LCD Display reverses depending on measurement mode

REED R7140 Specifications

RPM Range (Contact) 0.5 to 19,999 

RPM Range (Photo) 5 to 99,999

Surface Speed Range 0.05 to 1,999.9 m/min

0.2 to 6,560 ft/min

Resolution Photo: 0.1 RPM (≤999.9) / 1 RPM (>1000)

Contact: 0.1 RPM (≤999.9) / 1 RPM (>1000)

Surface: 0.1 m/min (≤99.99) / 0.1 ft/min (≤99.99) / 1 ft/min (>1000)

Basic Accuracy ±(0.05% + 1 dgt.)

General Specifications

Visible Indicator Yes (Light)

Target Distance 1.0ft (300mm) (Photo)

Response Time <1 sec

Sampling Time Photo: 1 sec (over 60 RPM)

Contact: 1 sec (over 6 RPM)

Display Size/Type 5 Digit LCD Display

Auto shut-off Yes

Internal Memory Max, Min and Last

Low Battery Indicator Yes

Power Supply 4 x AA Batteries

Product Certifications CE

Operating Temperature 32 to 122°F (0 to 50°C)

Storage Temperature -4 to 140°F (-20 to 60°C)

Operating Humidity 10-90%

Dimensions 8.5 x 2.6 x 1.5" (215 x 65 x 38 mm)

Weight 10.6oz (300g)

What's included with the REED R7140

  • Photo / Contact Tachometer
  • Reflective Tape
  • Large and Small Cone Tip Adapters
  • Funnel Adapter
  • Wheel Adapter
  • Batteries
  • Hard Carrying Case

Ideal Applications for the REED R7140

  • Identify issues with rotational equipment such as: Conveyors, Turbines, Compressors, Fans and Blowers
  • Automated Assembly and Production Lines