Extech RPM250W Laser Tachometer
The Extech RPM250W Laser Tachometer gives fast and safe RPM checks on rotating equipment without contact. Users can measure motors, fans, rotors, and other moving parts from a distance. This helps reduce risk during routine checks while still giving clear and stable readings.
Built for daily work, the Extech RPM250W Laser Tachometer measures from 10 to 99,999 RPM with 0.04% basic accuracy. A bright backlit LCD makes values easy to read in low light areas. In addition, the meter stores readings with the data hold function for quick review during testing.
Wireless Monitoring and Reporting
Bluetooth support allows the Extech RPM250W Laser Tachometer to connect with the free ExView app on iOS and Android devices. Users can monitor live trends and set high or low alarms directly from the app. The software also supports CSV export and PDF reports with photos for clear job records.
Field teams can use the ExView platform to view data from several compatible meters at the same time. This improves workflow during inspections and planned maintenance work. As a result, users can manage more readings from one mobile device with less manual recording.
Designed for Reliable Daily Use
A guided laser target distance from 50 to 500 mm helps users align the Extech RPM250W Laser Tachometer with moving equipment quickly. The unit also supports transmission distances above 10 m up to 90 m line of sight. This gives more flexibility when testing hard to reach systems.
Compact dimensions and low weight make the Extech RPM250W Laser Tachometer easy to carry between jobs. The meter runs on three AAA batteries and supports a one second sampling rate above 120 RPM. Combined with Bluetooth reporting and non-contact testing, it offers a simple solution for maintenance and inspection work.
Key Features
- Non-contact laser tachometer for rotating equipment
- Measures from 10 RPM to 99,999 RPM
- 0.04% basic accuracy for RPM measurements
- Counter function supports up to 99,999 counts
- Bluetooth connection for the ExView app
- Supports live trending and data recording
- Programmable high and low audible alarms
- CSV export support through the mobile app
- PDF reports can include site photos
- Bright 9999 count backlit LCD display
- Laser guided target distance from 50 to 500 mm
- Tripod mount with standard 1/4″-20 screw fitting
- Sampling rate of one second above 120 RPM
- Works with up to eight compatible 250W Series meters
Technical Specifications
| Manufacturer | Extech |
| Manufacturer part code | RPM250W |
| Product type | Laser tachometer |
| Measurement method | Non-contact laser measurement |
| RPM range | 10 to 99,999 RPM |
| RPM max resolution | 0.1 RPM up to 9,999.9 RPM and 1 RPM above 10,000 RPM |
| RPM basic accuracy | ±0.04% |
| Count range | 0 to 99,999 counts |
| Count max resolution | 1 count |
| Count basic accuracy | ±2 digits |
| Sampling rate | 1 second above 120 RPM |
| Sensor type | Photodiode and laser tube |
| Display type | 5 digit 9999 count backlit LCD |
| Connectivity | Bluetooth with ExView app support |
| App compatibility | iOS 13.0 and higher and Android 9.0 and higher |
| Target distance | 50 to 500 mm |
| Transmission distance | More than 10 m up to 90 m line of sight |
| Measuring angle | ±30° from perpendicular |
| Power supply | 3 x AAA 1.5 V batteries included |
| Operating conditions | 0 to 40°C at ≤80% RH |
| Dimensions | 120 x 53 x 28 mm |
| Weight | 81.6 g |
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What’s Included
- Extech RPM250W Laser Tachometer
- 3 x AAA batteries