About Benetech GM8905 Digital Tachometer
The Benetech GM8905 is a professional digital tachometer using advanced non-contact laser technology for precise rotational speed measurement across Pakistan. Trusted by maintenance engineers, quality control professionals, and industrial technicians in Karachi, Lahore, and Islamabad, this instrument delivers accurate RPM readings for diverse rotating machinery applications.
Speed measurement is essential for motor performance verification, preventive maintenance, quality control, and troubleshooting. The GM8905 measures rotational speed from 2.5 to 99,999 RPM with 0.1 RPM resolution for low-speed applications, featuring a CLASS 2 5mW laser pointer for safe, non-contact measurement.
Why Choose the Benetech GM8905 for RPM Measurement?
The GM8905 offers 2.5-99,999 RPM wide measurement range for versatile applications, 0.1 RPM resolution for precise low-speed measurement, non-contact laser technology for safe remote measurement, CLASS 2 5mW laser pointer with 50-500mm working distance, 5-digit large screen LCD with backlight for clear readings, max/min/avg/latest value hold for comprehensive data, auto power-off after 60 seconds to conserve battery, and included reflective tape for easy setup.
Key Specifications
- Measurement Range: 2.5 - 99,999 RPM
- Resolution: 0.1 RPM (2.5-999.9 RPM), 1 RPM (1000-99,999 RPM)
- Basic Precision: ±(0.1%n+5d) RPM (2.5-999.9 RPM), ±(1%n+5d) RPM (1000-99,999 RPM)
- Laser Power: CLASS 2, 5mW
- Measurement Distance: 50 - 500 mm (2 - 20 inches)
- Sampling Ratio: Once per second
- Time Base: Quartz crystal
- Display: 5-digit large screen LCD with backlight (18mm digit height)
- Functions: Max/Min/Avg/Latest value hold, auto power-off, low battery indication
- Power Supply: 2 × AAA 1.5V batteries
- Operating Environment: 0-50°C, 10-90% RH
- Storage Environment: -10-80°C, 10-75% RH
- Dimensions: 127 × 55.7 × 29.9 mm
- Weight: 106g
- Included Accessories: 3 bars of silver reflective tape (200mm × 12mm)
Key Benefits for Pakistani Users
- Motor Maintenance: Measure RPM of industrial motors in Karachi's manufacturing facilities for preventive maintenance and performance verification.
- Fan & Blower Testing: Check rotational speed of fans and blowers in Islamabad's commercial buildings for HVAC system optimization.
- Automotive Industry: Test engine RPM, alternator speed, and other rotating components in Lahore's automotive workshops.
- Textile Machinery: Monitor spindle and roller speeds in textile mills for quality control.
- Printing Presses: Verify roller and cylinder speeds for consistent print quality.
- CNC Machinery: Check spindle RPM for precision machining operations.
- Aircraft & Marine: Test engine and propeller speeds in aviation and marine applications.
How to Use the GM8905 Tachometer
- Attach a piece of reflective tape to the rotating object
- Point the laser at the reflective tape from 50-500mm distance
- Press the measurement button to read RPM
- Use data hold to freeze readings
- Recall max/min/avg values for analysis
- Auto power-off after 60 seconds conserves battery
Applications of GM8905 in Pakistan
The GM8905 is essential for:
- Industrial Motors: RPM testing for preventive maintenance and troubleshooting
- Fans & Blowers: Speed verification for HVAC system optimization
- Washing Machines: Motor speed testing for appliance repair
- Textile Machinery: Spindle and roller speed monitoring for quality control
- Automotive: Engine RPM, alternator, and fan speed testing
- Aircraft: Propeller and engine speed verification
- Ships: Marine engine and propeller RPM measurement
- Printing Presses: Roller and cylinder speed verification
- CNC Machinery: Spindle RPM checking for precision machining
- Conveyor Belts: Linear velocity measurement for production lines
Authorized Benetech Distributor in Pakistan
Instrument Technology Link is an authorized distributor of Benetech test instruments in Pakistan. With offices in Karachi, Lahore, and Islamabad, we provide genuine products, calibration support, and after-sales technical service. We deliver nationwide to all major cities including Faisalabad, Rawalpindi, Multan, Peshawar, Quetta, and Hyderabad.
Whether you need a tachometer for motor maintenance, fan testing, automotive diagnostics, or industrial machinery verification, the Benetech GM8905 offers professional features with non-contact laser technology and 2.5-99,999 RPM range. Contact us for current pricing and availability in Pakistan.
