Contact/Non-Contact Tachometer - General Tools & Instruments

The General Tools & Instruments PCT900 Contact/Non-Contact Tachometer is a professional-grade instrument engineered for precise rotational speed, surface speed, and linear length measurements. This compact unit offers technicians a versatile solution for verifying performance in diverse automotive and industrial applications, combining both laser optical and contact measurement capabilities. It delivers accurate data essential for diagnostics and preventative maintenance.

Key Features

• Dual Measurement Modes: Provides non-contact optical measurements (6-99,999 RPM) for safe, long-distance readings, and contact measurements (6-25,000 RPM) for direct component verification on engines and motors.
• High-Precision Diagnostics: Achieves reliable results with ±0.01% + 1 digit accuracy up to 6,000 RPM and 0.1 RPM resolution below 1,000 RPM, crucial for critical idle speed checks and alternator performance.
• Versatile Surface Speed & Length: Measures surface speed (ft/min, m/min, yd/min) and linear length (feet, meters, yards), suitable for assessing belts, rollers, and shafts in various settings.
• Integrated Data Memory: Stores up to 40 readings, including maximum, minimum, average, and last measurements, aiding technicians in documenting service work and monitoring trends.
• Safe Laser Targeting: Utilizes a built-in laser with a 3.3 ft (1 m) working distance for safe and accurate RPM measurement on hard-to-reach or moving components without direct contact.

Applications

Designed for professional automotive diagnostics, the PCT900 excels at verifying engine RPM, idle speed, alternator pulley ratios, and driveline speeds on passenger vehicles, light trucks, and fleet equipment. In industrial maintenance, it supports troubleshooting and preventive maintenance for motors, pumps, fans, and conveyors. It is also valuable for HVAC system fan RPM checks and quality assurance processes.

Specifications

• RPM (non-contact): 6–99,999 RPM
• RPM (contact): 6–25,000 RPM
• Surface speed: 2–8202 ft/min (0.6–2500 m/min)
• Max optical distance: 3.3 ft (1 m)
• Display: 5-digit LCD
• Memory: 40 readings
• Power: 1 x 9V battery
• Dimensions: 5.79 x 1.93 x 1.14 in (147 x 49 x 29 mm)
• Weight: ~3.4 oz (95 g) without battery