Fluke 931 Contact and Non-Contact Dual-Purpose Tachometer Overview of FLUKE 931 Tachometer The FLUKE 931 Tachometer is a professional dual-purpose instrument designed for accurate rotational speed measurement in industrial and maintenance environments. Supporting both contact and non-contact measurement modes, this tachometer allows technicians to safely and efficiently measure RPM on motors, fans, conveyors, and rotating machinery. With reliable accuracy and ergonomic handheld design, the FLUKE 931 Tachometer is ideal for preventive maintenance, troubleshooting, and performance verification. Applications: Heavy manufacturing environments (automotive, textile, pulp and paper, metalwork) Water purification plants Machining and chemical manufacturing plants HVAC compressors for industrial systems Key Features: Dual-purpose design: Supports both contact and non-contact speed measurements Accurately measures RPM, surface speed, and distance Non-contact optical measurement range up to 99999 RPM Contact measurement range up to 19999 RPM (Fluke 931 only) Optical sensing distance up to 500 mm Compact and lightweight design for handheld operation Durable construction for industrial environments Specifications: Measurement Specifications: Parameter Details Non-Contact Measurement 1 to 99999 revolutions/minute Contact Measurement (Fluke 931 only) 1 to 19999 revolutions/minute Precision ±0.02%RD+1 Sensing Distance (Optical) 500 mm General Specifications: Feature Details Battery Type (2) 1.5V LR6 (alkaline) AA batteries Battery Life Approximately 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 Information: 1-Year Warranty Origin: Made in Germany
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