Key features

• 6-digit backlight display reads the data clearly
• Signal detection reminder avoids invalid detection actions
• Maximum/minimum/average value and final readings
• Setting/Turning off the automatic power-off function
• Small size and easy to hold
• Easy switching of the contact and non-contact measurement modes
• Different speed measuring heads and rotational speeds adapt to different measurement occasions
• 1-year warranty

Product overview: Fluke 931 Contact and Non-Contact Dual-Purpose Tachometers
The Fluke 931 tachometer is a handheld tachometer, which integrates the contact and non-contact speed measurement functions and can accurately measure the revolutions per minute (RPM) or surface speed and distance. Fluke 930 is equivalent to a Fluke 931 with minimum configuration. With only the non-contact measuring function provided, it's more affordable and offers consistent quality.
Applications:

• Heavy manufacturing environments, e.g. automotive, textile, pulp and paper, metalwork
• Water purification plants
• Machining and chemical manufacturing plants
• HVAC compressors for industrial systems

Specifications: Fluke 931 Contact and Non-Contact Dual-Purpose Tachometers

Rotation speed measurement

• Range:- Optical (non-contact) measurement: 1 to 99999 revolutions/minute
• Contact :- measurement: 1 to 19999 revolutions/minute (Fluke 931 only)
• Precision :- ±0.02%RD+1
• Sensing distance :- (optical) 500 mm

Specifications

• Battery type:- (2) 1.5V LR6 (alkaline) AA battery
• Battery life :- About 40 hours
• Operating temperature:-  0°C to 50°C
• Storage temperature:- -20°C to 70°C
• Weight :- 250 g
• Dimensions :- 175 × 60 × 28 mm
• Warranty period:-  1 year