Digital Tachometer Hour Meter, 0 to 20000 RPM

The digital tachometer hour meter enables precise RPM monitoring and cumulative hour tracking. Featuring LCD backlight, IP65 protection, and AC/DC external power support for reliable operation in various environments. As a professional engine hour meter, it is ideal for gasoline engine users, machinery maintenance personnel, and industrial equipment managers. Buy the ATO RPM hour meter now.

Specification

Features

1. Real-time RPM Display: This digital tachometer hour meter shows current RPM on the LCD during engine operation and records peak RPM, making it easy to monitor running conditions.
2. Low-Power Design: Built with a long-lasting internal battery plus external power connection capability, this digital hour meter ensures stable long-term operation with a lifespan up to 20 years.
3. Precision and Reliability: This tachometer hour meter uses high-quality electronic components, fully automated SMT assembly, and optimized circuit design for consistent, accurate performance.
4. Automatic Data Storage: Equipped with high-quality CMOS EEPROM memory, this digital hour meter automatically saves timing data and user settings, ensuring data accuracy and integrity.
5. Wide Compatibility: This hour meter suitable for most gasoline engines, supporting adjustment across 4 ignition modes.

Timing Function

• Timing Operation Mode: When gasoline engine ignition signal is detected, the upper display zone flashes TOT and shows the current total timing.
• Timing Categories: Total timing and single timing.
• Total Timing Range: 0-99999.9 hours, non-resettable.
• Single Timing Range: 0-9999.9 hours, resettable.

Tachometer Function

• When detecting gasoline engine ignition signals, displays current RPM in the lower display zone.
• 4 stroke cycle options: 1P1R, 2P1R, 1P2R, 3P1R.
• Maximum RPM measurement: 20000, 15000, 20000, 10000 RPM.
• Maximum RPM Recording: When the signal stops, the highest RPM is displayed in the lower half of the display for 13 seconds.

Dimension (Unit: mm)

Installation

Note: The mounting plate requires corresponding mounting holes. If none are present, drill holes at the appropriate locations on the mounting plate.

1. Place the product into the mounting slot.

2. Secure the timer with two screws.

3. Refer to the image below: wrap the sensor wire around the engine spark plug at least 5 times and secure it with a zip tie.

Note: Improper wrapping of the sensor wire may affect the accuracy of test data.

Applications

Designed for gasoline engines, this RPM hour meter is compatible with most models on the market, delivering precise RPM monitoring and runtime tracking.

Tips: Working Principle of an Hour Meter for Gasoline Engine

rpm hour meter for gasoline engine operates by detecting the ignition signal generated when the engine is running. Each ignition pulse is converted into an electrical signal, allowing the meter to determine whether the engine is operating. When the ignition signal is present, the hour meter begins accumulating operating time and, in RPM-enabled models, calculates engine speed based on pulse frequency. The accumulated operating time is continuously recorded and stored in internal memory, ensuring accurate long-term tracking even during power interruptions. This working principle allows hour meters to provide reliable data for maintenance scheduling, service intervals, and overall engine lifespan management.